A Field experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka with a view to f... more A Field experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka with a view to find out the influence of irrigation and weed management method on the growth and yield of soybean (Glycine max L. Merrill) cv. BARI Soybean 6. The experiment was carried out with four irrigation treatments viz., no irrigation (control), one time at 20 DAS (days after sowing), two times at 20 and 40 DAS, three times at 20, 40, and 60 DAS, and four weed management methods i.e., no weeding (control), one time hand weeding at 20 DAS, two times hand weeding at 20 and 40 DAS, and chemical control by Whip Super® (Fenoxaprop-p-ethyl) @75g ha-1 at 20 DAS. Results showed that different types of weeds were found to infest experimental fields, among them Echinochloa colona, Lindernia procumbens and Cynodon dactylon had the highest relative density. It was also observed that L. procumbens created dominancy throughout the crop growth period. Three times irrigation resulted with the highest seed yield (1628 kg ha-1) on the other hand two times hand weeding showed up the highest seed yield (1556 kg ha-1). Combination effects showed the highest seed yield (1917 kg ha-1) from the three times irrigation and two times hand weeding which is statistical similar with the combination of three times irrigation and Whip Super® application (1790 kg ha-1). This was also observed that herbicide Whip Super® showed better performance to control grass weeds but failed to control Lindernia procumbens. Therefore, considering weed control methods, application of herbicide Whip Super® to be the way for successful weed management in soybean.
Effect of nitrogen (N) and sulphur (S) on yield and yield components of rapeseed (BARI Sarisha-14... more Effect of nitrogen (N) and sulphur (S) on yield and yield components of rapeseed (BARI Sarisha-14) was studied at Shere-Bangla Agricultural University Farm, Dhaka, Bangladesh during two consecutive Rabi seasons of 2014-15 and 2015-16. The experiment was laid out in split-plot design with three replications, consisted four levels of nitrogen viz., 0 (control), 60, 120, 180 kg ha-1 ; and four levels of sulphur i.e., 0 (control), 15, 30, 45 kg ha-1. Levels of N and S showed significant effect on yield and yield contributing characters of BARI Sarisha-14. Results showed that application of 120 kg N ha-1 with 45 kg S ha-1 gave the maximum yield. Results also revealed that the highest plant height, number of branches plant-1 , number of siliquae plant-1 , siliqua length, number of seeds siliqua-1 , 1000-seed weight, seed yield, stover yield, biological yield and harvest index were obtained from the combination of 120 kg N with 45 kg S ha-1 .
Integrated use of organic and inorganic fertilizers can improve crop productivity and sustain soi... more Integrated use of organic and inorganic fertilizers can improve crop productivity and sustain soil health and fertility. To gain insights into the response of green manure and chemical fertilizer, the present study was conducted to evaluate the growth, yield and proximate composition of aromatic rice varieties in Aman season at the research farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from July to December 2014. The experiment was set up in split-plot design with three aromatic rice varieties in main plots and six fertilizer levels in subplots. ‘Raniselute’ variety produced the highest plant height, dry matter weight hill-1, straw yield (7.81 t ha-1), biological yield (9.05 t ha-1), ash (1.59%), and fat content (2.81%). ‘BRRI dhan34’ gave the maximum number of effective tillers hill-1 (12.74), panicle length (27.93 cm), number of filled grains panicle-1 (192.5), 1,000-grain weight (17.22 g), grain yield (2.26 t ha-1), harvest index (29.99%), and carbohydrate content (77.63%). Application of 80% recommended doses of NPKSZn + green manure 3.5 t ha-1 showed better performance for getting the maximum growth, yield components and yield compared to other treatments. Recommended doses of NPKSZn showed the highest carbohydrate content (77.63%) and lowest moisture (8.75%) and ash content (1.29%). The maximum fat content (3.07%) and minimum carbohydrate content (76.53%) was obtained from 60% recommended doses of NPKSZn + green manure 7 t ha-1. Application of 20 and 40% recommended doses of NPKSZn + green manure 14 and 10.5 t ha-1 produced the highest moisture content (10.43%) and lowest protein content (8.26%) in rice grain. Green manure 17.5 t ha-1 produced the highest ash (1.79%), protein content (9.06%) and lowest fat content (2.51%).
Variation in the biochemical attributes of the seeds from five genotypes (CB-8, SR-08, BC-0125, B... more Variation in the biochemical attributes of the seeds from five genotypes (CB-8, SR-08, BC-0125, BC-0236 and BC-0252) of cotton (Gossypium hirsutum L.) was appraised. Seeds were packed in polythene and cloth bag and stored over 14 months to determine the changes in biochemical composition under ambient condition. Results revealed that total soluble sugar, total soluble protein and oil content of cotton seeds decreased and total free amino acid increased with the increase of storage period. However, decreasing rate of total soluble sugar, total soluble protein and oil content and increasing rate of total free amino acid was slower in polythene bag and faster in cloth bag throughout the storing period. Among the genotypes, BC-0252 showed slower degradation of biochemical composition of stored seeds than that of seeds of other genotypes.
The study was conducted at the Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, ... more The study was conducted at the Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur from September 2008 to January 2009 to determine seed hardening effects on germination, vigour and seedling growth of jute seed. Jute seeds of two popular varieties namely CVL-1 under Corchorus capsularis L. and O-9897 under Corchorus olitorius L. were used in the study. Jute seeds were hydrated and dehydrated for 2, 4, 6 and 8 hours to induce seed hardening. Different physiological seed qualitative parameters of harden seeds were compared with unharden control seeds. Large sized seeds, highest germination and seedling root length, dry weight, vigour index and minimum mean germination time was obtained from control treatment. On the contrary, small sized seeds, lowest germination and seedling root length, dry weight, vigour index were recorded from the seeds of the 8 hours hydration. Maximum water absorption rate, electrical conductivity, mean germination time and minimum seedling shoot length were found from 8 hours hydrated seeds. The lowest water absorption rate, electrical conductivity was observed from 2 hours hydrated seeds. In case of two species, Corchorus capsularis showed better performance than Corchorus olitorius. Seedling vigour index was found to be positively correlated with viability and seedling dry weight. Similarly, seed size was found to be positively correlated with viability percentage, seedling dry weight and seedling vigour index. Leachate conductivity showed negative relationship with viability percent, seedling dry weight, seedling vigour index and seed size.
Parthenium hysterophorus L. and Chromolaena odorata L. are well known for their allelopathic pote... more Parthenium hysterophorus L. and Chromolaena odorata L. are well known for their allelopathic potentiality. These two weeds are invasive types and can be a new threat to Bangladesh agriculture. Inhibition on seed germination was reported earlier by these two weeds. On the other hand PRH (Fruit vinegar) extracted from fruits, which is organic, proved to have beneficial effects on certain crops. This study was undertaken to find out the effect of P. hysterophorus, C. odorata and PRH on the seed germination and seedling growth of maize (Zea mays L.), soybean (Glycine max L.) and cotton (Gossypium hirsutum L.) under laboratory conditions. The study revealed the significant inhibition of seed germination by these invasive weeds due to their allelopathic potential. However, PRH increased germination percentage of cotton seeds among the test crops while maize and soybean had no significant effect. Significant reduction of plumule length of maize, cotton and soybean seedlings were observed due to allelopathic effect of C. odorata. Among the test crops maize radicle length was more inhibited by aqueous leaf extract of C. odorata. Maize suffered most by the allelopathic effect of C. odorata among the test crops. The results of the study could be important in planning successful weed management strategy and increasing production of the test crops.
Five cotton genotypes viz., CB-08, SR-08, BC-0125, BC-0236 and BC-0252 were used to determine the... more Five cotton genotypes viz., CB-08, SR-08, BC-0125, BC-0236 and BC-0252 were used to determine the effects of seeds of different storage containers on growth, yield and quality of cotton genotypes. The experiment was conducted between July, 2010 to February, 2011 at Cotton Research, Training and Seed Multiplication Farm, Sreepur, Gazipur, Bangladesh. Significant variations related to genotypes and seed sources were observed for stand establishment, branch development, phenology, yield components, yield and fiber quality attributes of cotton. Yield and quality of cotton were significantly higher when crop was grown from seeds stored in polythene bag as compared to cloth bag. Interaction of genotypes and seed sources indicated that highest sympodial branches/plant (19.11), days to 50% flowering and boll splitting (72.00 and 156.33, respectively), number of bolls/plant (20.33), boll weight (4.60 g), seed cotton and lint yield (2305.30 and 832.49 kg/ha, respectively), ginning out turn (36.04%) and lint index (6.28 g) were recorded for genotype BC-0125 grown from seed stored in polythene bag. Regarding fiber quality, the genotype SR-08 grown from seeds stored in polythene bag had the highest staple length (3.15 cm) and fiber strength (86.65 P.S.I). Therefore, effective breeding program with these two genotypes may lead to development of new genotype that will give higher yield consistent with higher fiber quality.
Seeds of five cotton genotypes viz., CB-8, BC-0236, SR-08, BC-0125 and BC-0252 were assessed to o... more Seeds of five cotton genotypes viz., CB-8, BC-0236, SR-08, BC-0125 and BC-0252 were assessed to observe the effect of packing materials on physiological quality of cotton seed stored under ambient condition. The packaging materials were hermetically sealed polythene bag (thickness 8 μ) and cloth bag. Physiological quality of cotton seeds was assessed in the laboratory of Seed Science and Technology Unit of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh during May, 2009 to July, 2010. Results revealed that better physiological quality of cotton seeds was achieved by storing in hermetically sealed polythene bag instead of cloth bag. Moisture content of cotton seed increased rapidly in cloth bag upto 4 months. Afterwards, it decreased up to 10 months and then again increased slightly depending upon relative humidity of ambient condition. Contrary, moisture in seed of polythene bag remained more or less stable throughout the storage period. Excellent germinability (>80%) was observed in seeds of polythene bag as compare to cloth bag even after 14 months of storage. Considering genotypes, significant genotypic variation was found in all physiological traits of stored cotton seed. The genotype BC-0252 maintained the highest storability as it showed highest germination (83%) and vigour index (3167) with the lowest (6.47%) loss of seed weight at the end of storage. The genotype BC-0252 therefore, could be useful in future breeding program for cotton improvement consistent with better seed quality.
Quality seed is essential to increase cotton production in Bangladesh. For this, 43 cotton genoty... more Quality seed is essential to increase cotton production in Bangladesh. For this, 43 cotton genotypes were evaluated to identify better inherent physiological seed quality. The experiment was set up at the Seed Science and Technology Unit Laboratory of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh in May, 2009. The results showed great variation exists in seed index, seed germination percentage, electrical conductivity and seedling vigour of studied cotton genotypes. Frequency distribution suggested the majority number of the genotypes had higher values of germination percentage and seedling vigour. Electrical conductivity (EC) test of seed leachate provides the status of seed quality. The highest EC of seed leachate found in 2 genotypes BC-0434 and BC-0432 ensuing of weak membrane while the lowest EC of seed leachate was recorded in genotype BC-0125. Cluster analysis grouped the genotypes into five distinct groups which categorized into (i) low, (ii) medium low, (iii) medium, (iν) medium high and (ν) high vigour. The genotypes BC-051, BC-0197, BC-0432, BC-0438 and BC-0252 in cluster V showed the highest germination percentage (96.20%) with the highest seedling vigour index (5064). Therefore, these genotypes could be used for genetic improvement of cotton considering higher yield with better seed quality.
Salinity affects almost every aspect of the physiology and biochemistry of plants due to both osm... more Salinity affects almost every aspect of the physiology and biochemistry of plants due to both osmotic stress and ionic toxicity. We studied the variation of ion uptake in tomato cv. BARI Tomato-5 under different levels of salinity (0, 2, 4, 6 and 8 dS/m) and their mitigation by different concentration of Ca2+ (0, 5, 10 mM). The results showed that salt stress significantly affects the stomatal conductance of tomato. Salt treatment markedly increased the uptake of Na+ and decreased both K+ and Ca2+ uptake in the leaves of tomato. The uptake of Na+ decreased and uptake of Ca2+ and K+ increased in tomato when salt stressed plants were treated with Ca2+. Our results revealed that Ca supplementation can effectively reduce the saltinduced ionic toxicity in tomato plants. Exogenous application of Ca2+ significantly mitigates the adverse effects of salt induced ionic toxicity.
Soybean is one of the most important legumes in the world. Sowing date and weeds are considered a... more Soybean is one of the most important legumes in the world. Sowing date and weeds are considered as the major determinants of soybean yield. In order to study the influence of sowing date and weed control methods on the yield attributes of soybean cv. BARI Soybean-6, a field experiment was conducted during December, 2012 to June, 2013 at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. The different sowing dates (18 th December, 2 nd January, 17 th January and 1 st February) and weeding methods (no weeding, two hand weeding, hand hoe weeding and chemical control by Whip Super 9 EC (Fenoxaprop-P-ethyl: C 18 H 16 C l NO 5)) showed significant effect on number of plants m-2 , number of pods/plant, pod length, number of seeds/pod, 1000-seed weight, stover yield, biological yield and harvest index of soybean. Results revealed that sowing on 2 January gave the highest number of pods/plant, seeds/pod , 1000-seed weight, stover and biological yield (31.50, 1.93, 117.70 g, 2.74 and 4.91 t/ha , respectively). The weeds were effectively controlled by two hand weeding (20 and 40 DAS) which produced the maximum number of pods/plant, pod length, seeds/pod, stover and biological yield (32.75, 3.17 cm, 1.91, 2.74 t/ha and 4.97 t/ha, respectively) which were statistically similar (30.92, 2.98 cm, 1.85, 2.63 t/ha and 4.82 t/ha, respectively) with herbicide application. Interaction effect showed that highest number of pods/plant, seeds/pod, 1000-seed weight, stover and biological yield (37.67, 2.00, 125.80 g, 3.10 and 5.60 t/ha, respectively) were obtained from 2 January sowing when the crop was weeded by hand at 20 and 40 DAS.
A total of forty potato varieties grown in Bangladesh were evaluated for biochemical differences ... more A total of forty potato varieties grown in Bangladesh were evaluated for biochemical differences in their composition. The dry matter, starch, reducing sugar, non-reducing sugar and total sugar contents of different potato varieties studied in this experiment were ranged from 13.56 to 24.60%, 6.80 to 18.93%, 0.02 to 0.61%, 0.09 to 0.53% and 0.27 to 0.78%, respectively. The highest protein content was found in ‘Ailsa’ (3.87%) followed by ‘Caruso’ (3.77%) with no significant difference whereas minimum value was observed in varieties ‘Espirit’ (0.79%) which was statistically at par with ‘Saikat’ (0.81%), ‘Sagitta’ (0.85%), ‘Biella’ (0.85%) and ‘Jam Alu’ (0.87%). ‘Tomensa’ and ‘Sagitta’ recorded the highest ash content (1.53%) and ‘Connect’ showed the least ash content (0.76%) followed by ‘Saikat’ (0.82%). Among the varieties, ‘Lady Rosetta’, ‘Ailsa’, ‘Caruso’, ‘Forza’, ‘Amanda’, ‘Ludmila’, and ‘Tomensa’, had dry matter and starch content more than 20% and 17%, respectively and reducing sugar content less than 0.20%. Seven potato varieties out of forty performed best in respect of their different bio-chemical properties and hence recommended for processing industry in Bangladesh.
A field trial was carried out to observe the performance of fine rice cv. BRRI dhan50 under diffe... more A field trial was carried out to observe the performance of fine rice cv. BRRI dhan50 under different planting density and weed management strategies. Experiment field was infested by18 weed species and Cyperus michelianus (36.73%) at 30 DAT, Cyperus esculentus (25.13%) and Alternanthera sessilis (21.54%) at 60 DAT, Fimbristylis miliaceae (19.50%) at 90 DAT were dominant. Application of Sunrice 150WG showed highest weed control efficiency 80.94 and 61.52% at (30 and 60 DAT). Two seedlings/hill (P 1) showed highest weed control efficiency 58.92% at 30 DAT and 4 seedlings/hill (P 2) 39.18% at 60 DAT. Both planting density and weed management techniques significantly influenced the growth, yield and yield contributing parameters of BRRI dhan50. The result showed that 2 seedlings/hill (P 1) planting density performed maximum grain yield (5.70 t/ha), straw yield (7.81 t/ha) and harvest index (42.06%) and among the weed management methods, post-emergence herbicide Sunrice 150WG managed weeds very successfully which showed highest grain yield (5.36 t/ha), straw yield (7.42 t/ha) and harvest index (41.63%). The interaction effect of planting density and weed management methods showed that 2 seedlings/hill paired with Sunrice 150WG showed the highest grain yield (6.81 t/ha), straw yield (8.69 t/ha) and harvest index (43.96%).
Introduction: Effect of potassium (K) and mulch materials on grading of different types of tuber ... more Introduction: Effect of potassium (K) and mulch materials on grading of different types of tuber were investigated at the Agronomy research field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from November 2013 to March 2014. Methods: The experiment comprised of four different doses of K viz., 0 kg K ha-1 , 100 kg K ha-1 , 125 kg K ha-1 , 150 kg K ha-1 and four different types of mulch materials viz., soil mulch, rice straw, water hyacinth and saw dust. The experiment was laid out in a split-plot design with 3 replications. Statistical analysis done by using MSTAT-C program and mean differences among the treatments were compared by Least Significant Difference (LSD) at 5% level of significance. Results: Maximum large sized tubers were produced by 150 kg K ha-1 with rice straw mulch. Application of 125 kg K ha-1 with rice straw produced maximum seed potato and tuber for French fry. Without K and soil mulch produced highest tuber for chips (% by t ha-1). Conclusions: Application of 125 kg K ha-1 with rice straw mulch seems to be more suitable for getting higher seed potato (% by number and % by weight) and French fry for BARI (Bangladesh Agricultural Research Institute) TPS-I.
Plant growth substances are well-known to improve the source-sink connection and encourage the tr... more Plant growth substances are well-known to improve the source-sink connection and encourage the translocation of photo-assimilates thereby helping in effective flower formation, fruit and seed development and ultimately increase the yield of crops. A pot experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during November, 2013 to March, 2014 in a Randomized Complete Block Design (RCBD) based on five replications with a view to find out the influence of different plant growth regulators and their stages of application on the growth and yield of soybean cv. BARI Soybean-6. Application of plant growth regulators at different stages of plant showed significant effect on plant height, number of branches/plant , chlorophyll content (SPAD value), average length of internode, dry weight/plant and seed yield of soybean. Results showed that application of GA3 at vegetative stage produced the tallest plant (61.16 cm) and longest average length of internode (8.79 cm) and spray at flower initiation stage provided maximum SPAD value (50.38). Kinetin at vegetative stage gave the highest dry weight (23.68 g/plant) of soybean. Results also revealed that salicylic acid applied at flower and pod initiation stage gave the highest number of branches/plant (11.00) and seed yield (6.38 g/plant), compared to other growth regulators. So salicylic acid acts an important role for increasing soybean yield, when it was applied at flower and pod initiation stage.
Sowing date and weed management play a significant role in determining soybean growth, developmen... more Sowing date and weed management play a significant role in determining soybean growth, development and seed yield. Results showed that different sowing date and weed control methods had significant effect on relative weed density, weed biomass, weed control efficiency, plant height, dry weight plant-1 and seed yield of soybean. Among the infested weed species in the experimental field the dominant weeds were Lindernia procumbens (44.78%), Echinochloa colonum (26.39%) and Cynodon dactylon (16.30%). The results also revealed that early sowing (2 January) brought about the highest seed yield (2.17 t ha-1) and sowing delay (1 February) resulted in the lowest yield (1.64 t ha-1). Two times hand weeding (20 and 40 DAS) controlled the weeds most effectively and led to highest seed yield (2.23 t ha-1) which was statistically similar (2.19 t ha-1) with herbicide application. Combination effect showed that the highest seed yield (2.50 t ha-1) was obtained from 2 January sowing when the crop was weeded by hand at 20 and 40 DAS.
Plant growth regulators play important roles in plant growth and development, but little is known... more Plant growth regulators play important roles in plant growth and development, but little is known about the roles of plant growth regulators in yield components and seed qualities of soybean. In this study, salicylic acid, gibberellic acid (GA3), kinetin and distilled water (control) were sprayed to soybean (BARI Soybean-6) at the vegetative stage, flower initiation stage, pod initiation stage, flower + pod initiation stage in the pot experiment under field condition during November, 2013 to March, 2014. Treatments were arranged in a Randomized Complete Block Design (RCBD) with five replications. The different plant growth regulators and their time of application showed significant effect on number of pods plant-1 , pod length, number of seeds pod-1 , 100-seed weight, stover yield, biological yield, harvest index, seed grading (% by weight), protein and moisture content in seed of soybean. Salicylic acid gave the highest number of seeds pod-1 , harvest index, small size seed, protein and moisture content in seed (1.60, 39.06%, 19.47%, 44.56% and 12.91%, respectively).
In order to study the combined effect of vermicompost and chemical fertilizers on the nutrient co... more In order to study the combined effect of vermicompost and chemical fertilizers on the nutrient content in grain, straw and post harvest soil of boro rice cv. BRRI dhan29, a field experiment was conducted in December, 2013 to June, 2014 at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. Sixteen combinations of 4 vermicompost level @ 0, 1, 2, 4 t/ha and 4 NPKS levels i.e. 0-0-0-0, 50-8-33-6, 100-16-66-12, 1 150-24-99-18 kg/ha , respectively were applied in a Randomized Complete Block Design (RCBD) with three replications. Results showed that the highest dose of vermicompost and chemical fertilizer increased the concentration of P, K and S by rice grain and straw significantly at the harvesting stage. Combined application of vermicompost and chemical fertilizer failed to increase the total N content of post-harvest soil. Combination of vermicompost and chemical fertilizers also increased the organic matter, P, K and S status of post harvest soil significantly.
This study was conducted to investigate the changes in wheat grain quality that may occur during ... more This study was conducted to investigate the changes in wheat grain quality that may occur during storage in different types of containers commonly used in Bangladesh i.e., tin container, earthen pots and plastic pots. Seeds of three different wheat varieties viz., BARI Gom 21 (Shatabdi), BARI Gom 25 and BARI Gom 26 were stored in these containers during April to November, 2013, at existing environmental conditions of Department of Agronomy Laboratory, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. The result revealed that tin container showed an increase in germination percentage, shoot and root length, seedlings dry weight with decrease in 1000-seed weight, moisture percentage, days to germination and electrical conductivity of seeds during storage. Lowest quality performance was observed from earthen pot. BARI Gom 26 performed best quality in retaining highest germination percentage, shoot and root length, seedling dry weight with lowest electrical conductivity and days to germination. In case of interaction effect, the highest germination percentage, seedling shoot length, root length and dry weight was obtained from BARI Gom 26 stored in tin container and the lowest result was found from earthen pot with BARI Gom-26.
A Field experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka with a view to f... more A Field experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka with a view to find out the influence of irrigation and weed management method on the growth and yield of soybean (Glycine max L. Merrill) cv. BARI Soybean 6. The experiment was carried out with four irrigation treatments viz., no irrigation (control), one time at 20 DAS (days after sowing), two times at 20 and 40 DAS, three times at 20, 40, and 60 DAS, and four weed management methods i.e., no weeding (control), one time hand weeding at 20 DAS, two times hand weeding at 20 and 40 DAS, and chemical control by Whip Super® (Fenoxaprop-p-ethyl) @75g ha-1 at 20 DAS. Results showed that different types of weeds were found to infest experimental fields, among them Echinochloa colona, Lindernia procumbens and Cynodon dactylon had the highest relative density. It was also observed that L. procumbens created dominancy throughout the crop growth period. Three times irrigation resulted with the highest seed yield (1628 kg ha-1) on the other hand two times hand weeding showed up the highest seed yield (1556 kg ha-1). Combination effects showed the highest seed yield (1917 kg ha-1) from the three times irrigation and two times hand weeding which is statistical similar with the combination of three times irrigation and Whip Super® application (1790 kg ha-1). This was also observed that herbicide Whip Super® showed better performance to control grass weeds but failed to control Lindernia procumbens. Therefore, considering weed control methods, application of herbicide Whip Super® to be the way for successful weed management in soybean.
Effect of nitrogen (N) and sulphur (S) on yield and yield components of rapeseed (BARI Sarisha-14... more Effect of nitrogen (N) and sulphur (S) on yield and yield components of rapeseed (BARI Sarisha-14) was studied at Shere-Bangla Agricultural University Farm, Dhaka, Bangladesh during two consecutive Rabi seasons of 2014-15 and 2015-16. The experiment was laid out in split-plot design with three replications, consisted four levels of nitrogen viz., 0 (control), 60, 120, 180 kg ha-1 ; and four levels of sulphur i.e., 0 (control), 15, 30, 45 kg ha-1. Levels of N and S showed significant effect on yield and yield contributing characters of BARI Sarisha-14. Results showed that application of 120 kg N ha-1 with 45 kg S ha-1 gave the maximum yield. Results also revealed that the highest plant height, number of branches plant-1 , number of siliquae plant-1 , siliqua length, number of seeds siliqua-1 , 1000-seed weight, seed yield, stover yield, biological yield and harvest index were obtained from the combination of 120 kg N with 45 kg S ha-1 .
Integrated use of organic and inorganic fertilizers can improve crop productivity and sustain soi... more Integrated use of organic and inorganic fertilizers can improve crop productivity and sustain soil health and fertility. To gain insights into the response of green manure and chemical fertilizer, the present study was conducted to evaluate the growth, yield and proximate composition of aromatic rice varieties in Aman season at the research farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from July to December 2014. The experiment was set up in split-plot design with three aromatic rice varieties in main plots and six fertilizer levels in subplots. ‘Raniselute’ variety produced the highest plant height, dry matter weight hill-1, straw yield (7.81 t ha-1), biological yield (9.05 t ha-1), ash (1.59%), and fat content (2.81%). ‘BRRI dhan34’ gave the maximum number of effective tillers hill-1 (12.74), panicle length (27.93 cm), number of filled grains panicle-1 (192.5), 1,000-grain weight (17.22 g), grain yield (2.26 t ha-1), harvest index (29.99%), and carbohydrate content (77.63%). Application of 80% recommended doses of NPKSZn + green manure 3.5 t ha-1 showed better performance for getting the maximum growth, yield components and yield compared to other treatments. Recommended doses of NPKSZn showed the highest carbohydrate content (77.63%) and lowest moisture (8.75%) and ash content (1.29%). The maximum fat content (3.07%) and minimum carbohydrate content (76.53%) was obtained from 60% recommended doses of NPKSZn + green manure 7 t ha-1. Application of 20 and 40% recommended doses of NPKSZn + green manure 14 and 10.5 t ha-1 produced the highest moisture content (10.43%) and lowest protein content (8.26%) in rice grain. Green manure 17.5 t ha-1 produced the highest ash (1.79%), protein content (9.06%) and lowest fat content (2.51%).
Variation in the biochemical attributes of the seeds from five genotypes (CB-8, SR-08, BC-0125, B... more Variation in the biochemical attributes of the seeds from five genotypes (CB-8, SR-08, BC-0125, BC-0236 and BC-0252) of cotton (Gossypium hirsutum L.) was appraised. Seeds were packed in polythene and cloth bag and stored over 14 months to determine the changes in biochemical composition under ambient condition. Results revealed that total soluble sugar, total soluble protein and oil content of cotton seeds decreased and total free amino acid increased with the increase of storage period. However, decreasing rate of total soluble sugar, total soluble protein and oil content and increasing rate of total free amino acid was slower in polythene bag and faster in cloth bag throughout the storing period. Among the genotypes, BC-0252 showed slower degradation of biochemical composition of stored seeds than that of seeds of other genotypes.
The study was conducted at the Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, ... more The study was conducted at the Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur from September 2008 to January 2009 to determine seed hardening effects on germination, vigour and seedling growth of jute seed. Jute seeds of two popular varieties namely CVL-1 under Corchorus capsularis L. and O-9897 under Corchorus olitorius L. were used in the study. Jute seeds were hydrated and dehydrated for 2, 4, 6 and 8 hours to induce seed hardening. Different physiological seed qualitative parameters of harden seeds were compared with unharden control seeds. Large sized seeds, highest germination and seedling root length, dry weight, vigour index and minimum mean germination time was obtained from control treatment. On the contrary, small sized seeds, lowest germination and seedling root length, dry weight, vigour index were recorded from the seeds of the 8 hours hydration. Maximum water absorption rate, electrical conductivity, mean germination time and minimum seedling shoot length were found from 8 hours hydrated seeds. The lowest water absorption rate, electrical conductivity was observed from 2 hours hydrated seeds. In case of two species, Corchorus capsularis showed better performance than Corchorus olitorius. Seedling vigour index was found to be positively correlated with viability and seedling dry weight. Similarly, seed size was found to be positively correlated with viability percentage, seedling dry weight and seedling vigour index. Leachate conductivity showed negative relationship with viability percent, seedling dry weight, seedling vigour index and seed size.
Parthenium hysterophorus L. and Chromolaena odorata L. are well known for their allelopathic pote... more Parthenium hysterophorus L. and Chromolaena odorata L. are well known for their allelopathic potentiality. These two weeds are invasive types and can be a new threat to Bangladesh agriculture. Inhibition on seed germination was reported earlier by these two weeds. On the other hand PRH (Fruit vinegar) extracted from fruits, which is organic, proved to have beneficial effects on certain crops. This study was undertaken to find out the effect of P. hysterophorus, C. odorata and PRH on the seed germination and seedling growth of maize (Zea mays L.), soybean (Glycine max L.) and cotton (Gossypium hirsutum L.) under laboratory conditions. The study revealed the significant inhibition of seed germination by these invasive weeds due to their allelopathic potential. However, PRH increased germination percentage of cotton seeds among the test crops while maize and soybean had no significant effect. Significant reduction of plumule length of maize, cotton and soybean seedlings were observed due to allelopathic effect of C. odorata. Among the test crops maize radicle length was more inhibited by aqueous leaf extract of C. odorata. Maize suffered most by the allelopathic effect of C. odorata among the test crops. The results of the study could be important in planning successful weed management strategy and increasing production of the test crops.
Five cotton genotypes viz., CB-08, SR-08, BC-0125, BC-0236 and BC-0252 were used to determine the... more Five cotton genotypes viz., CB-08, SR-08, BC-0125, BC-0236 and BC-0252 were used to determine the effects of seeds of different storage containers on growth, yield and quality of cotton genotypes. The experiment was conducted between July, 2010 to February, 2011 at Cotton Research, Training and Seed Multiplication Farm, Sreepur, Gazipur, Bangladesh. Significant variations related to genotypes and seed sources were observed for stand establishment, branch development, phenology, yield components, yield and fiber quality attributes of cotton. Yield and quality of cotton were significantly higher when crop was grown from seeds stored in polythene bag as compared to cloth bag. Interaction of genotypes and seed sources indicated that highest sympodial branches/plant (19.11), days to 50% flowering and boll splitting (72.00 and 156.33, respectively), number of bolls/plant (20.33), boll weight (4.60 g), seed cotton and lint yield (2305.30 and 832.49 kg/ha, respectively), ginning out turn (36.04%) and lint index (6.28 g) were recorded for genotype BC-0125 grown from seed stored in polythene bag. Regarding fiber quality, the genotype SR-08 grown from seeds stored in polythene bag had the highest staple length (3.15 cm) and fiber strength (86.65 P.S.I). Therefore, effective breeding program with these two genotypes may lead to development of new genotype that will give higher yield consistent with higher fiber quality.
Seeds of five cotton genotypes viz., CB-8, BC-0236, SR-08, BC-0125 and BC-0252 were assessed to o... more Seeds of five cotton genotypes viz., CB-8, BC-0236, SR-08, BC-0125 and BC-0252 were assessed to observe the effect of packing materials on physiological quality of cotton seed stored under ambient condition. The packaging materials were hermetically sealed polythene bag (thickness 8 μ) and cloth bag. Physiological quality of cotton seeds was assessed in the laboratory of Seed Science and Technology Unit of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh during May, 2009 to July, 2010. Results revealed that better physiological quality of cotton seeds was achieved by storing in hermetically sealed polythene bag instead of cloth bag. Moisture content of cotton seed increased rapidly in cloth bag upto 4 months. Afterwards, it decreased up to 10 months and then again increased slightly depending upon relative humidity of ambient condition. Contrary, moisture in seed of polythene bag remained more or less stable throughout the storage period. Excellent germinability (>80%) was observed in seeds of polythene bag as compare to cloth bag even after 14 months of storage. Considering genotypes, significant genotypic variation was found in all physiological traits of stored cotton seed. The genotype BC-0252 maintained the highest storability as it showed highest germination (83%) and vigour index (3167) with the lowest (6.47%) loss of seed weight at the end of storage. The genotype BC-0252 therefore, could be useful in future breeding program for cotton improvement consistent with better seed quality.
Quality seed is essential to increase cotton production in Bangladesh. For this, 43 cotton genoty... more Quality seed is essential to increase cotton production in Bangladesh. For this, 43 cotton genotypes were evaluated to identify better inherent physiological seed quality. The experiment was set up at the Seed Science and Technology Unit Laboratory of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh in May, 2009. The results showed great variation exists in seed index, seed germination percentage, electrical conductivity and seedling vigour of studied cotton genotypes. Frequency distribution suggested the majority number of the genotypes had higher values of germination percentage and seedling vigour. Electrical conductivity (EC) test of seed leachate provides the status of seed quality. The highest EC of seed leachate found in 2 genotypes BC-0434 and BC-0432 ensuing of weak membrane while the lowest EC of seed leachate was recorded in genotype BC-0125. Cluster analysis grouped the genotypes into five distinct groups which categorized into (i) low, (ii) medium low, (iii) medium, (iν) medium high and (ν) high vigour. The genotypes BC-051, BC-0197, BC-0432, BC-0438 and BC-0252 in cluster V showed the highest germination percentage (96.20%) with the highest seedling vigour index (5064). Therefore, these genotypes could be used for genetic improvement of cotton considering higher yield with better seed quality.
Salinity affects almost every aspect of the physiology and biochemistry of plants due to both osm... more Salinity affects almost every aspect of the physiology and biochemistry of plants due to both osmotic stress and ionic toxicity. We studied the variation of ion uptake in tomato cv. BARI Tomato-5 under different levels of salinity (0, 2, 4, 6 and 8 dS/m) and their mitigation by different concentration of Ca2+ (0, 5, 10 mM). The results showed that salt stress significantly affects the stomatal conductance of tomato. Salt treatment markedly increased the uptake of Na+ and decreased both K+ and Ca2+ uptake in the leaves of tomato. The uptake of Na+ decreased and uptake of Ca2+ and K+ increased in tomato when salt stressed plants were treated with Ca2+. Our results revealed that Ca supplementation can effectively reduce the saltinduced ionic toxicity in tomato plants. Exogenous application of Ca2+ significantly mitigates the adverse effects of salt induced ionic toxicity.
Soybean is one of the most important legumes in the world. Sowing date and weeds are considered a... more Soybean is one of the most important legumes in the world. Sowing date and weeds are considered as the major determinants of soybean yield. In order to study the influence of sowing date and weed control methods on the yield attributes of soybean cv. BARI Soybean-6, a field experiment was conducted during December, 2012 to June, 2013 at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. The different sowing dates (18 th December, 2 nd January, 17 th January and 1 st February) and weeding methods (no weeding, two hand weeding, hand hoe weeding and chemical control by Whip Super 9 EC (Fenoxaprop-P-ethyl: C 18 H 16 C l NO 5)) showed significant effect on number of plants m-2 , number of pods/plant, pod length, number of seeds/pod, 1000-seed weight, stover yield, biological yield and harvest index of soybean. Results revealed that sowing on 2 January gave the highest number of pods/plant, seeds/pod , 1000-seed weight, stover and biological yield (31.50, 1.93, 117.70 g, 2.74 and 4.91 t/ha , respectively). The weeds were effectively controlled by two hand weeding (20 and 40 DAS) which produced the maximum number of pods/plant, pod length, seeds/pod, stover and biological yield (32.75, 3.17 cm, 1.91, 2.74 t/ha and 4.97 t/ha, respectively) which were statistically similar (30.92, 2.98 cm, 1.85, 2.63 t/ha and 4.82 t/ha, respectively) with herbicide application. Interaction effect showed that highest number of pods/plant, seeds/pod, 1000-seed weight, stover and biological yield (37.67, 2.00, 125.80 g, 3.10 and 5.60 t/ha, respectively) were obtained from 2 January sowing when the crop was weeded by hand at 20 and 40 DAS.
A total of forty potato varieties grown in Bangladesh were evaluated for biochemical differences ... more A total of forty potato varieties grown in Bangladesh were evaluated for biochemical differences in their composition. The dry matter, starch, reducing sugar, non-reducing sugar and total sugar contents of different potato varieties studied in this experiment were ranged from 13.56 to 24.60%, 6.80 to 18.93%, 0.02 to 0.61%, 0.09 to 0.53% and 0.27 to 0.78%, respectively. The highest protein content was found in ‘Ailsa’ (3.87%) followed by ‘Caruso’ (3.77%) with no significant difference whereas minimum value was observed in varieties ‘Espirit’ (0.79%) which was statistically at par with ‘Saikat’ (0.81%), ‘Sagitta’ (0.85%), ‘Biella’ (0.85%) and ‘Jam Alu’ (0.87%). ‘Tomensa’ and ‘Sagitta’ recorded the highest ash content (1.53%) and ‘Connect’ showed the least ash content (0.76%) followed by ‘Saikat’ (0.82%). Among the varieties, ‘Lady Rosetta’, ‘Ailsa’, ‘Caruso’, ‘Forza’, ‘Amanda’, ‘Ludmila’, and ‘Tomensa’, had dry matter and starch content more than 20% and 17%, respectively and reducing sugar content less than 0.20%. Seven potato varieties out of forty performed best in respect of their different bio-chemical properties and hence recommended for processing industry in Bangladesh.
A field trial was carried out to observe the performance of fine rice cv. BRRI dhan50 under diffe... more A field trial was carried out to observe the performance of fine rice cv. BRRI dhan50 under different planting density and weed management strategies. Experiment field was infested by18 weed species and Cyperus michelianus (36.73%) at 30 DAT, Cyperus esculentus (25.13%) and Alternanthera sessilis (21.54%) at 60 DAT, Fimbristylis miliaceae (19.50%) at 90 DAT were dominant. Application of Sunrice 150WG showed highest weed control efficiency 80.94 and 61.52% at (30 and 60 DAT). Two seedlings/hill (P 1) showed highest weed control efficiency 58.92% at 30 DAT and 4 seedlings/hill (P 2) 39.18% at 60 DAT. Both planting density and weed management techniques significantly influenced the growth, yield and yield contributing parameters of BRRI dhan50. The result showed that 2 seedlings/hill (P 1) planting density performed maximum grain yield (5.70 t/ha), straw yield (7.81 t/ha) and harvest index (42.06%) and among the weed management methods, post-emergence herbicide Sunrice 150WG managed weeds very successfully which showed highest grain yield (5.36 t/ha), straw yield (7.42 t/ha) and harvest index (41.63%). The interaction effect of planting density and weed management methods showed that 2 seedlings/hill paired with Sunrice 150WG showed the highest grain yield (6.81 t/ha), straw yield (8.69 t/ha) and harvest index (43.96%).
Introduction: Effect of potassium (K) and mulch materials on grading of different types of tuber ... more Introduction: Effect of potassium (K) and mulch materials on grading of different types of tuber were investigated at the Agronomy research field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from November 2013 to March 2014. Methods: The experiment comprised of four different doses of K viz., 0 kg K ha-1 , 100 kg K ha-1 , 125 kg K ha-1 , 150 kg K ha-1 and four different types of mulch materials viz., soil mulch, rice straw, water hyacinth and saw dust. The experiment was laid out in a split-plot design with 3 replications. Statistical analysis done by using MSTAT-C program and mean differences among the treatments were compared by Least Significant Difference (LSD) at 5% level of significance. Results: Maximum large sized tubers were produced by 150 kg K ha-1 with rice straw mulch. Application of 125 kg K ha-1 with rice straw produced maximum seed potato and tuber for French fry. Without K and soil mulch produced highest tuber for chips (% by t ha-1). Conclusions: Application of 125 kg K ha-1 with rice straw mulch seems to be more suitable for getting higher seed potato (% by number and % by weight) and French fry for BARI (Bangladesh Agricultural Research Institute) TPS-I.
Plant growth substances are well-known to improve the source-sink connection and encourage the tr... more Plant growth substances are well-known to improve the source-sink connection and encourage the translocation of photo-assimilates thereby helping in effective flower formation, fruit and seed development and ultimately increase the yield of crops. A pot experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during November, 2013 to March, 2014 in a Randomized Complete Block Design (RCBD) based on five replications with a view to find out the influence of different plant growth regulators and their stages of application on the growth and yield of soybean cv. BARI Soybean-6. Application of plant growth regulators at different stages of plant showed significant effect on plant height, number of branches/plant , chlorophyll content (SPAD value), average length of internode, dry weight/plant and seed yield of soybean. Results showed that application of GA3 at vegetative stage produced the tallest plant (61.16 cm) and longest average length of internode (8.79 cm) and spray at flower initiation stage provided maximum SPAD value (50.38). Kinetin at vegetative stage gave the highest dry weight (23.68 g/plant) of soybean. Results also revealed that salicylic acid applied at flower and pod initiation stage gave the highest number of branches/plant (11.00) and seed yield (6.38 g/plant), compared to other growth regulators. So salicylic acid acts an important role for increasing soybean yield, when it was applied at flower and pod initiation stage.
Sowing date and weed management play a significant role in determining soybean growth, developmen... more Sowing date and weed management play a significant role in determining soybean growth, development and seed yield. Results showed that different sowing date and weed control methods had significant effect on relative weed density, weed biomass, weed control efficiency, plant height, dry weight plant-1 and seed yield of soybean. Among the infested weed species in the experimental field the dominant weeds were Lindernia procumbens (44.78%), Echinochloa colonum (26.39%) and Cynodon dactylon (16.30%). The results also revealed that early sowing (2 January) brought about the highest seed yield (2.17 t ha-1) and sowing delay (1 February) resulted in the lowest yield (1.64 t ha-1). Two times hand weeding (20 and 40 DAS) controlled the weeds most effectively and led to highest seed yield (2.23 t ha-1) which was statistically similar (2.19 t ha-1) with herbicide application. Combination effect showed that the highest seed yield (2.50 t ha-1) was obtained from 2 January sowing when the crop was weeded by hand at 20 and 40 DAS.
Plant growth regulators play important roles in plant growth and development, but little is known... more Plant growth regulators play important roles in plant growth and development, but little is known about the roles of plant growth regulators in yield components and seed qualities of soybean. In this study, salicylic acid, gibberellic acid (GA3), kinetin and distilled water (control) were sprayed to soybean (BARI Soybean-6) at the vegetative stage, flower initiation stage, pod initiation stage, flower + pod initiation stage in the pot experiment under field condition during November, 2013 to March, 2014. Treatments were arranged in a Randomized Complete Block Design (RCBD) with five replications. The different plant growth regulators and their time of application showed significant effect on number of pods plant-1 , pod length, number of seeds pod-1 , 100-seed weight, stover yield, biological yield, harvest index, seed grading (% by weight), protein and moisture content in seed of soybean. Salicylic acid gave the highest number of seeds pod-1 , harvest index, small size seed, protein and moisture content in seed (1.60, 39.06%, 19.47%, 44.56% and 12.91%, respectively).
In order to study the combined effect of vermicompost and chemical fertilizers on the nutrient co... more In order to study the combined effect of vermicompost and chemical fertilizers on the nutrient content in grain, straw and post harvest soil of boro rice cv. BRRI dhan29, a field experiment was conducted in December, 2013 to June, 2014 at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. Sixteen combinations of 4 vermicompost level @ 0, 1, 2, 4 t/ha and 4 NPKS levels i.e. 0-0-0-0, 50-8-33-6, 100-16-66-12, 1 150-24-99-18 kg/ha , respectively were applied in a Randomized Complete Block Design (RCBD) with three replications. Results showed that the highest dose of vermicompost and chemical fertilizer increased the concentration of P, K and S by rice grain and straw significantly at the harvesting stage. Combined application of vermicompost and chemical fertilizer failed to increase the total N content of post-harvest soil. Combination of vermicompost and chemical fertilizers also increased the organic matter, P, K and S status of post harvest soil significantly.
This study was conducted to investigate the changes in wheat grain quality that may occur during ... more This study was conducted to investigate the changes in wheat grain quality that may occur during storage in different types of containers commonly used in Bangladesh i.e., tin container, earthen pots and plastic pots. Seeds of three different wheat varieties viz., BARI Gom 21 (Shatabdi), BARI Gom 25 and BARI Gom 26 were stored in these containers during April to November, 2013, at existing environmental conditions of Department of Agronomy Laboratory, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. The result revealed that tin container showed an increase in germination percentage, shoot and root length, seedlings dry weight with decrease in 1000-seed weight, moisture percentage, days to germination and electrical conductivity of seeds during storage. Lowest quality performance was observed from earthen pot. BARI Gom 26 performed best quality in retaining highest germination percentage, shoot and root length, seedling dry weight with lowest electrical conductivity and days to germination. In case of interaction effect, the highest germination percentage, seedling shoot length, root length and dry weight was obtained from BARI Gom 26 stored in tin container and the lowest result was found from earthen pot with BARI Gom-26.
Bangladesh is frequently cited as one of the most vulnerable countries to climate change. A study... more Bangladesh is frequently cited as one of the most vulnerable countries to climate change. A study was undertaken to study the effects of climate change on rice (Oryza sativa L.) production in Bangladesh. The book was prepared by accommodating the findings from different researchers. Different vulnerable regions of climate change were included in the study and effects of different climatic parameters on rice yield were studied. Climatic factors such as temperature, rainfall, atmospheric CO2, solar radiation are closely link with rice production. Climate directly influences the physiological processes of rice plant’s growth, development and grain formation. Indirectly, climate influences the incidence of crop pests, diseases and hence, and grain yields.
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doses of NPKSZn + green manure 7 t ha-1. Application of 20 and 40% recommended doses of NPKSZn + green manure 14 and 10.5 t ha-1 produced the highest moisture content (10.43%) and lowest protein content (8.26%) in rice grain. Green manure 17.5 t ha-1 produced the highest ash (1.79%), protein content (9.06%) and lowest fat content (2.51%).
index (6.28 g) were recorded for genotype BC-0125 grown from seed stored in polythene bag. Regarding
fiber quality, the genotype SR-08 grown from seeds stored in polythene bag had the highest staple length (3.15 cm) and fiber strength (86.65 P.S.I). Therefore, effective breeding program with these two genotypes
may lead to development of new genotype that will give higher yield consistent with higher fiber quality.
respectively. The highest protein content was found in ‘Ailsa’ (3.87%) followed by ‘Caruso’ (3.77%) with no significant difference whereas minimum value was observed in varieties ‘Espirit’ (0.79%) which was statistically at par with ‘Saikat’ (0.81%), ‘Sagitta’ (0.85%), ‘Biella’ (0.85%) and ‘Jam Alu’ (0.87%). ‘Tomensa’ and ‘Sagitta’ recorded the highest ash content (1.53%) and ‘Connect’ showed the least ash content (0.76%) followed by ‘Saikat’ (0.82%). Among the varieties, ‘Lady Rosetta’, ‘Ailsa’, ‘Caruso’, ‘Forza’, ‘Amanda’, ‘Ludmila’, and ‘Tomensa’, had dry matter and starch content more than 20% and 17%, respectively and reducing sugar content less than 0.20%. Seven potato varieties out of forty performed best in respect of their different bio-chemical properties and hence recommended for processing industry in Bangladesh.
Department of Agronomy Laboratory, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. The result revealed that tin container showed an increase in germination percentage, shoot and root length, seedlings dry weight with decrease in 1000-seed weight, moisture percentage, days to germination and electrical conductivity of seeds during storage. Lowest quality performance was observed from earthen pot. BARI Gom 26 performed best quality in retaining highest germination percentage, shoot and root length, seedling dry weight with lowest electrical conductivity and days to germination. In case of interaction effect, the highest germination percentage, seedling shoot length, root length and dry weight was obtained from BARI Gom 26 stored in tin container and the lowest result was found from earthen pot with BARI Gom-26.
doses of NPKSZn + green manure 7 t ha-1. Application of 20 and 40% recommended doses of NPKSZn + green manure 14 and 10.5 t ha-1 produced the highest moisture content (10.43%) and lowest protein content (8.26%) in rice grain. Green manure 17.5 t ha-1 produced the highest ash (1.79%), protein content (9.06%) and lowest fat content (2.51%).
index (6.28 g) were recorded for genotype BC-0125 grown from seed stored in polythene bag. Regarding
fiber quality, the genotype SR-08 grown from seeds stored in polythene bag had the highest staple length (3.15 cm) and fiber strength (86.65 P.S.I). Therefore, effective breeding program with these two genotypes
may lead to development of new genotype that will give higher yield consistent with higher fiber quality.
respectively. The highest protein content was found in ‘Ailsa’ (3.87%) followed by ‘Caruso’ (3.77%) with no significant difference whereas minimum value was observed in varieties ‘Espirit’ (0.79%) which was statistically at par with ‘Saikat’ (0.81%), ‘Sagitta’ (0.85%), ‘Biella’ (0.85%) and ‘Jam Alu’ (0.87%). ‘Tomensa’ and ‘Sagitta’ recorded the highest ash content (1.53%) and ‘Connect’ showed the least ash content (0.76%) followed by ‘Saikat’ (0.82%). Among the varieties, ‘Lady Rosetta’, ‘Ailsa’, ‘Caruso’, ‘Forza’, ‘Amanda’, ‘Ludmila’, and ‘Tomensa’, had dry matter and starch content more than 20% and 17%, respectively and reducing sugar content less than 0.20%. Seven potato varieties out of forty performed best in respect of their different bio-chemical properties and hence recommended for processing industry in Bangladesh.
Department of Agronomy Laboratory, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. The result revealed that tin container showed an increase in germination percentage, shoot and root length, seedlings dry weight with decrease in 1000-seed weight, moisture percentage, days to germination and electrical conductivity of seeds during storage. Lowest quality performance was observed from earthen pot. BARI Gom 26 performed best quality in retaining highest germination percentage, shoot and root length, seedling dry weight with lowest electrical conductivity and days to germination. In case of interaction effect, the highest germination percentage, seedling shoot length, root length and dry weight was obtained from BARI Gom 26 stored in tin container and the lowest result was found from earthen pot with BARI Gom-26.
growth, development and grain formation. Indirectly, climate influences the incidence of crop pests, diseases and hence, and grain yields.