- Land Management Group, School of Veterinary and Life Sciences, Murdoch University, Perth, WA-6150
and Soil Science Division, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh-1701 - +61470318320 (AU) and +8801815029112 (BD)
- Determining C sequestration in Bangladesh soils, Environmental Science, Agriculture, Soil Science, Carbon Sequestration, Soil carbon sequestration, and 59 moresoil carbon study in Nepal, Cropping Systems, Climate Change Adaptation, Climate Change and coastal zones, Soil Salinity, System of Rice Intensification, Zero Tillage, GHG Emission, Soil phosphorus, Tillage and soil organic carbon, GHG Reduction Through SRI -Rice, Conventional tillage, Phosphorus Dynamics, Transplanted Rice Vs SRI ....Study on GHG Emission, Tillage and crop residue management, total P, organic P, inorganic P, Olsen’s P, P fraction, Life Cycle Assessment, Crop Science, Agronomy, Nitrogen, Climate Change, Plant Stress Responses, Crop Nutrition, Participatory GIS, Agricultural Productivity, Sustainable agriculture, Greenhouse gas emissions reduction policies, Conservation Agriculture (CA), Appllication of Remote Sensing in Agriculture and Environmental Management, Carbon Dioxide, Soil Chemistry, Environmental Accounting, Climate change policy, Vegetables, Urban Parks, Weed Science, Fertilizer, Nitrate Contamination, Nitrogen Cycle, Climate Change Mitigation, Kyoto Protocol, Soil Fertility, Urban Green Open Spaces, Flood Mitigation, Water use efficiency, Plant Roots, Soil Fertility and Soil Nutrient Management, Drought and Water Stress, Organic Farming, Aquatic Microbial Ecology, Fairtrade, Soil Ecology and Biology, Climate Change Adaptation And Mitigation Strategies, Aquatic ecology (Environmental Studies), and Environmental Sciencesedit
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In intensive crop production systems, sustainable agricultural development strives to find the balance between productivity and environmental impact. To reduce the N fertilizer-associated environmental risks of intensive cropping, sound... more
In intensive crop production systems, sustainable agricultural development strives to find the balance between productivity and environmental impact. To reduce the N fertilizer-associated environmental risks of intensive cropping, sound agronomic and environmentally acceptable management practices are urgently needed. To attain high yields, improve soil health, and ensure economic return and N usage efficiency in conservation-based intensive agriculture, N management must be optimized, which has not yet been studied systematically in the mustard-boro rice-aman rice cropping pattern. During 2016/17, 2017/18, and 2018/19 cropping seasons in Bangladesh, cropping system experiments were conducted to investigate the interactive effects of tillage practices and nitrogen fertilizer rates on soil characteristics, crop productivity, and profitability under conservation agriculture (CA) systems. The trial featured two tillage systems: (i) conventional tillage (CT) and (ii) strip-tillage (ST)....
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Background: Scarcity of improved cultivars with wide adaptability and stability in tuber yield is one of the most important reasons for poor yield of potato in Bangladesh. The stable cultivars which perform well over a wide range of... more
Background: Scarcity of improved cultivars with wide adaptability and stability in tuber yield is one of the most important reasons for poor yield of potato in Bangladesh. The stable cultivars which perform well over a wide range of environments become very important for farmers and processors because they require reliable production and quality. The current study was aimed to evaluate 10 potato genotypes (eight BARI released cultivars and two advanced clones) grown in six regions to find high yielding and stable performing genotypes. Methods: Ten potato genotypes were evaluated at six locations of Bangladesh during season 2017-2018 following a randomized complete block design with three replications. The potato genotypes were sown on 15th November 2017. Fertilizer doses, irrigation, plant protection, weeding, earthing up and other agronomic practices were applied according to Tuber Crops Research Center (TCRC), Bangladesh Agricultural Research Institute (BARI) recommendation. Plant...
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Wetland rice (Oryza sativa L.) production contributes 55% of agricultural greenhouse gas emissions globally. Any new technology with the potential to reduce the greenhouse gas emissions from wetland rice could therefore make a significant... more
Wetland rice (Oryza sativa L.) production contributes 55% of agricultural greenhouse gas emissions globally. Any new technology with the potential to reduce the greenhouse gas emissions from wetland rice could therefore make a significant contribution to total global warming mitigation by agriculture.
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Wetland rice (Oryza sativa L.) production contributes 55% of agricultural greenhouse gas emissions globally. Any new technology with the potential to reduce the greenhouse gas emissions from wetland rice could therefore make a significant... more
Wetland rice (Oryza sativa L.) production contributes 55% of agricultural greenhouse gas emissions globally. Any new technology with the potential to reduce the greenhouse gas emissions from wetland rice could therefore make a significant contribution to total global warming mitigation by agriculture.
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With the increase of global population, the demand for food crops, oil, fiber and other by-product yielding crops is increasing. In contrast to this increasing demand, abiotic stresses hinder the productivity of plants. Abiotic stresses... more
With the increase of global population, the demand for food crops, oil, fiber and other by-product yielding crops is increasing. In contrast to this increasing demand, abiotic stresses hinder the productivity of plants. Abiotic stresses sometimes reduce more than half of the crop yields. To attain global food security, understanding of plant responses to abiotic stresses is crucial because this is the prerequisite for developing approaches/tools for improving plant stress tolerance. Trace elements are nutrients required in small quantities to facilitate a range of physiological functions. These elements stimulate growth but are not essential. Some are essential only for certain plant species or required under a given condition. Trace elements not only improve plant physiological processes and growth but play roles in improving plant stress tolerance. However, the actual physiological functions of trace elements in conferring abiotic stress tolerance are still under study. This chapter focuses on the roles of trace elements emphasizing especially the recent advances on the actions of biological trace elements in plant abiotic stress tolerance.
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Very little is known about the changes that occur in soil organic carbon (SOC) and total nitrogen (TN) under an intensive rice-based cropping system following the change to minimal tillage and increased crop residue retention in the... more
Very little is known about the changes that occur in soil organic carbon (SOC) and total nitrogen (TN) under an intensive rice-based cropping system following the change to minimal tillage and increased crop residue retention in the Gangetic Plains of South Asia. The field experiment was conducted for 3 years at Rajbari, Bangladesh to examine the impact of tillage practices and crop residue retention on carbon (C) and nitrogen (N) cycling. The experiment comprised four tillage practices—conventional tillage (CT), zero tillage (ZT), strip-tillage (ST), and bed planting (BP) in combination with two residue retention levels—increased residue (R50%) and low residue (R20%—the current practice). The TN, SOC, and mineral N (NH4+-N and NO3−-N) were measured in the soil at different crop growth stages. After 3 years, ZT, ST, and BP sequestered 12, 11, and 6% more SOC, and 18, 13, and 10% more TN, respectively than the conventional crop establishment practice at 0–5 cm soil depth. The accumul...
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Zero tillage increases stratification of immobile nutrients such as P. However, it is unclear whether near-surface stratification of soil P eases or hampers P uptake by maize (Zea mays L.) which needs an optimum P supply at/before... more
Zero tillage increases stratification of immobile nutrients such as P. However, it is unclear whether near-surface stratification of soil P eases or hampers P uptake by maize (Zea mays L.) which needs an optimum P supply at/before six–leaf–stage to achieve potential grain yield. The aim of the three-year study was to determine whether P stratification, under zero tillage, impaired yield of maize and which P placement methods could improve P uptake on an Aeric Albaquept soil subgroup. Phosphorus fertilizer was placed by: (a) broadcasting before final tillage and sowing of seeds; (b) surface banding beside the row; and (c) deep banding beside the row (both the band placements were done at three–four leaf stage) Phosphorus treatments were repeated for 3 years along with three tillage practices viz.: (a) zero tillage (ZT); (b) conventional tillage (12 cm; CT); and (c) deep tillage (25 cm; DT). In the third year, all the tillage practices gave similar yield of Bangladesh Agricultural Res...
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Conservation agriculture (CA) with appropriate nutrient management can help increase crop production, improve soil health and bring economic return. An experiment was conducted at farmer’s field of Rajbari district under Low Ganges River... more
Conservation agriculture (CA) with appropriate nutrient management can help increase crop production, improve soil health and bring economic return. An experiment was conducted at farmer’s field of Rajbari district under Low Ganges River Floodplain (AEZ-12) during 2017-2018 to evaluate the effects of tillage and nutrient management on the system productivity and profitability in the jute - T. Aman rice- onion cropping system. Strip tillage (ST) for jute, non-puddling for T. Aman rice and one pass minimum tillage (MT) for onion was contrasted with conventional crop establishment practice (CT). Four different nutrient management practices were NM1: farmer’s practice (FP), NM2: soil test based (STB) fertilizer, NM3:25% extra of STB and NM4: organic amendments (20 % nutrients from cowdung). The experiment was laid out in a split-plot design with three replications by assigning tillage practices in main plots and nutrient management in sub-plots. The yield attributes of jute, T. Aman ric...
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SUMMARYConservation agriculture (CA) is inadequately developed for rice-based cropping systems widely practiced in Bangladesh. The current drawback is the implementation of CA for all crops including rice (Oryza sativaL., ecotype... more
SUMMARYConservation agriculture (CA) is inadequately developed for rice-based cropping systems widely practiced in Bangladesh. The current drawback is the implementation of CA for all crops including rice (Oryza sativaL., ecotype ‘transplanted aman’ [T. aman]) to increase rice–wheat (Triticum aestivumL.) rotation productivity. It is important to identify the best combination of tillage types and cropping systems to achieve a high yield of component crops and improve soil health. Three tillage practices, assigned to main experimental plots [namely, zero tillage (ZT), conventional tillage using a rotary tiller (CT) and deep tillage using a chisel plough (DT)] and three different cropping systems, assigned to sub-plots [namely, WFT: wheat–fallow–T. aman, WMT: wheat–mungbean (Vigna radiataL. Wilczek)–T. aman and WDT: wheat–dhaincha (Sesbania rostrata)–T. aman], were tested. After 4 years, ZT under WDT and WMT significantly increased soil organic matter (SOM) at 0–150 mm depth, and these...
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Research Interests: Environmental Engineering, Environmental Science, Cleaner Production, Agriculture, Soil carbon sequestration, and 15 moreFertilizer Management, GHG Emissions, Production economics, Greenhouse gas emissions reduction policies, Greenhouses Gases and Agriculture, Manufacturing Engineering, Greenhouse Gas Emissions, Greenhouse Gas, Greenhouse gas emissions from agriculture, Interdisciplinary Engineering, Greenhouse Gas Emission Reductions, Puddling, Rice based cropping system in IGP, GWP mitigation, and Crop Residue
Average cropping intensity is 191% in Bangladesh but cropping patterns are mainly rice-based (BBS, 2012). Depletion of soil organic matter as well as other plant nutrients is one of the most serious threats to the sustainability of... more
Average cropping intensity is 191% in Bangladesh but cropping patterns are mainly rice-based (BBS, 2012). Depletion of soil organic matter as well as other plant nutrients is one of the most serious threats to the sustainability of agriculture in Bangladesh (Rijpma and Jahiruddin, 2004). Hence, conservation agriculture (CA) practices such as minimal soil disturbance, crop residue retention with suitable crop rotations could be a good option for Bangladesh. However, the effects of CA practices in intensive rice-based rotations on soil properties along with crop yields have not been adequately assessed in Bangladesh. The present study was undertaken to determine the effects of minimum tillage practices and crop residue retention on soil properties and crop yields under a rice-based cropping system.
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Rice-based intensive cropping systems require high input levels making them less profitable and vulnerable to the reduced availability of labor and water in Asia. With continuous conventional puddled rice transplanting, the situation is... more
Rice-based intensive cropping systems require high input levels making them less profitable and vulnerable to the reduced availability of labor and water in Asia. With continuous conventional puddled rice transplanting, the situation is exacerbated by damaged soil structure, declining underground water and decreasing land and water productivity. To minimize these negative effects a range of new crop establishment practices have been developed (zero tillage, dry direct seeding, wet direct seeding, water seeding, strip planting, bed planting, non-puddled transplanting of rice, mechanical transplanting of rice crop and combinations thereof) with varying effects on soil health, crop productivity, resource saving and global warming mitigation potential. Some of these allow Conservation Agriculture (CA) to be practiced in the rice-based mono-, double- and triple cropping systems. Innovations in machinery especially for smallholder farms have supported the adoption of the new establishment...
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We review the recent development of Conservation Agriculture (CA) for rice-based smallholder farms in the Eastern Gangetic Plain (EGP) and the underpinning research on agronomy, weed control, soil properties and greenhouse gas emissions... more
We review the recent development of Conservation Agriculture (CA) for rice-based smallholder farms in the Eastern Gangetic Plain (EGP) and the underpinning research on agronomy, weed control, soil properties and greenhouse gas emissions being tested to accelerate its adoption in Bangladesh. The studies are based mostly on minimum soil disturbance planting in strip planting (SP) mode, using the Versatile Multi-crop Planter (VMP), powered by a two-wheel tractor (2WT). One-pass SP with the VMP decreased fuel costs for crop establishment by up to 85% and labour requirements by up to 50%. We developed strip-based non-puddled rice (Oryza sativa) transplanting (NPT) in minimally-disturbed soil and found that rice grain yield increased (by up to 12%) in longer-term practice of CA. On farms, 75% of NPT crops increased gross margin. For non-rice crops, relative yield increases ranged from 28% for lentil (Lens culinaris) to 6% for wheat (Triticum aestivum) on farms that adopted CA planting. Eq...
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The efforts of modern civilization to create an environment to meet human aspirations have successfully resulted in constant improvements of our lifestyle, but it has increased risks to human and ecological health. This situation has... more
The efforts of modern civilization to create an environment to meet human aspirations have successfully resulted in constant improvements of our lifestyle, but it has increased risks to human and ecological health. This situation has motivated many scientists throughout the world to analyze the environmental factors that can affect our health or ecology and to calculate the levels of risk. In Bangladesh development activities and utilization of the river pose a great threat to the health of the existing natural environmental system, particularly for the important river Buriganga of the capital city, Dhaka, due to the pollution of the river water. A study was carried out to observe the ecological health hazards of the Buriganga river and their risk to human health. Several random samples of water were collected from different spots on the river from September to December 2006. The samples were analyzed to determine water quality and associated environmental health risks. The study re...
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Globally, soil degradation is an important issue for sustainable crop production. Soil quality indicators are the soil attributes that address the ecological functions of soil. Therefore, indicator-based soil quality assessment has been... more
Globally, soil degradation is an important issue for sustainable crop production. Soil quality indicators are the soil attributes that address the ecological functions of soil. Therefore, indicator-based soil quality assessment has been emphasized for quantifying the relative soil quality changes in different nutrient management systems. Soil quality underthe rice (Oryza sativa L.) and wheat (Triticum aestivam L.) cropping system was assessed using a modified “Soil Management Assessment Framework (SMAF)” model. Soil’s physical, chemical, nutritional, and biological indices were analyzed for different nutrient management strategies, viz., inorganic fertilizer (NPK), NPK + 7.5 Mg ha−1 farmyard manure (NPKF), NPK + 10.0 Mg ha−1 paddy straw (NPKP) and NPK + 8.0 Mg ha−1 Sesbania sesban L. green manure (NPKG). Nutrient management strategies significantly influenced soil quality indices. NPKF showed the highest SMAF score for soil physical quality index followed by NPKP > NPKG > NPK ...
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A study was conducted to assess the effects of organic amendments on soil aggregates, carbon (C) sequestration, and energy use efficiency (EUE) during five consecutive Boro and Transplanted Aman rice seasons in Bangladesh during... more
A study was conducted to assess the effects of organic amendments on soil aggregates, carbon (C) sequestration, and energy use efficiency (EUE) during five consecutive Boro and Transplanted Aman rice seasons in Bangladesh during 2018–2020. Five treatments (viz., control (only inorganic fertilizers), cow dung (CD), vermicompost (VC), rice straw (RS), and poultry manure (PM)) were used. The organic materials were applied at 2 t C ha−1 season−1 to all the plots, except in the control treatment. Inorganic fertilizers were applied in all treatments in both seasons following integrated nutrient management (INM). The data reveal that PM was found to be more efficient at increasing the water-stable soil aggregates (WSA), followed by the RS, CD, and VC. The WSA in smaller-sized soil aggregates were found to be higher than those in larger-sized soil aggregates. VC was found to be the most effective in terms of C sequestration (29%), followed by PM (26%), CD (22%), and RS (20%). The highest EU...
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Minimum soil disturbance and increased crop residue retention practices are promising options to enhance soil organic matter, nutrient concentration and crop yield. However, the potentials of the practices in improving soil properties,... more
Minimum soil disturbance and increased crop residue retention practices are promising options to enhance soil organic matter, nutrient concentration and crop yield. However, the potentials of the practices in improving soil properties, increasing crop yield and in ensuring economic return have not been tested in the monsoon rice (Oryza sativa L.)-lentil (Lens culinaris L.)/wheat (Triticum aestivum L.)-jute (Corchorus culinaris L.) cropping systems on seasonally flooded lowlands of the Eastern Gangetic Plain of South Asia. A field trial for consecutive three years was conducted in the Gangetic Plains of Bangladesh to evaluate the effects of zero tillage (ZT), strip-tillage (ST), bed planting (BP) and conventional tillage (CT) with two residue retention levels (RL—a low level similar to current farmers’ practice and RH—increased retention) on soil properties, yield and economic return. Between rice and jute crops, lentil was grown for the 1st and 2nd years and wheat for the 3rd year d...
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The surface band P placement method with ZT, CT and DT gave significantly higher yield than broadcast and deep band placements. The minimum tillage practices under broadcast and deep band placement methods showed the highest available and... more
The surface band P placement method with ZT, CT and DT gave significantly higher yield than broadcast and deep band placements. The minimum tillage practices under broadcast and deep band placement methods showed the highest available and total P content in soil after harvesting of maize. Phosphorus was stratified in the topsoil with zero tillage along with broadcasting and surface band applications but the CT and DT practices under broadcast and deep band placements resulted in the almost similar distribution of P with soil depth up to 24 cm.
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Antifreeze proteins (AFPs) are class of proteins that protect organisms from the damage caused by freezing through their ability to inhibit ice growth and effectively lower the temperature at which water freezes. In this study, a total of... more
Antifreeze proteins (AFPs) are class of proteins that protect organisms from the damage caused by freezing through their ability to inhibit ice growth and effectively lower the temperature at which water freezes. In this study, a total of 25 antifreeze proteins were selected from four different sources (plant, bacteria and fungus) where they represent distinct physicochemical and structural features. Several Physico-chemical properties such as grand average hydropathy (GRAVY), aliphatic index (AI), extinction coefficient (EC), isolelectric point (pI), and instability index (II) were computed. S-S bridges and secondary structures were analyzed using CYS_REC and SOPMA programs respectively. The three dimensional structure of Antifreeze proteins is predicted by using three homology modelling server Geno3D, Swiss-model and CPHmodels. These models were evaluated with PROCHECK, What If, and ProSA programs. Model visualization and analysis was done with Pymol. These structures will provide...
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An experiment was conducted in Hill Agricultural Research Station (HARS), Khagrachari during 2011-2012 to estimate the soil loss and changes in soil properties under indigenous cultivation methods of ginger, turmeric, aroid, and jhum rice... more
An experiment was conducted in Hill Agricultural Research Station (HARS), Khagrachari during 2011-2012 to estimate the soil loss and changes in soil properties under indigenous cultivation methods of ginger, turmeric, aroid, and jhum rice in hill slopes. The use of indigenous cultivation methods for growing different crops has created negative impact on soil productivity in hill slope. Among the four crops, the annually highest soil loss (22.68 t/ha) occurred by ginger cultivation which was statistically similar with turmeric (16.52 t/ha) followed by aroid (12.02 t/ha) and lowest soil loss (7.92 t/ha) occurred by jhum rice cultivation. There were no significant changes in soil physical properties like soil texture, bulk density, soil moisture content, field capacity. Organic matter and all the nutrients were higher in eroded soil than the post-harvested soil. A considerable amount of organic matter along with macro and micronutrients has been depleted through traditional method of c...
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This study was conducted to know cropping cycles required to improve OM status in soil and to investigate the effects of medium-term tillage practices on soil properties and crop yields in Grey Terrace soil of Bangladesh under... more
This study was conducted to know cropping cycles required to improve OM status in soil and to investigate the effects of medium-term tillage practices on soil properties and crop yields in Grey Terrace soil of Bangladesh under wheat-mungbean-T. aman cropping system. Four different tillage practices, namely, zero tillage (ZT), minimum tillage (MT), conventional tillage (CT), and deep tillage (DT), were studied in a randomized complete block (RCB) design with four replications. Tillage practices showed positive effects on soil properties and crop yields. After four cropping cycles, the highest OM accumulation, the maximum root mass density (0-15 cm soil depth), and the improved physical and chemical properties were recorded in the conservational tillage practices. Bulk and particle densities were decreased due to tillage practices, having the highest reduction of these properties and the highest increase of porosity and field capacity in zero tillage. The highest total N, P, K, and S ...
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With an objective to evaluate the impact of existing extracurricular activities at undergraduate medical and dental education in Bangladesh this descriptive study was designed and collected information conveniently from 515 students and... more
With an objective to evaluate the impact of existing extracurricular activities at undergraduate medical and dental education in Bangladesh this descriptive study was designed and collected information conveniently from 515 students and 155 teachers from randomly selected medical and dental colleges of the country. The respondents (100%) supported more than one extracurricular activity for the medical and dental students. More than 65% were in favor of games, sports and cultural functions. Some students clubs are also popular among the respondents but only 10.8% respondents supported student politics. The respondents who were against student politics viewed that it hamper educational activities and disciplines in their institutes. About half the respondents (48.8%) were unsatisfied with the present academic activities in their medical colleges. Respondents advised to develop infrastructures, accommodation facilities, teaching aids, libraries, administrative supervisory in the instit...
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A comparative study regarding prevalence and antimicrobial susceptibility of Vibrio species in the black tiger shrimp (Penaeus monodon Fabricius) culture environment as well as market samples were analyzed. Total Vibrio counts were... more
A comparative study regarding prevalence and antimicrobial susceptibility of Vibrio species in the black tiger shrimp (Penaeus monodon Fabricius) culture environment as well as market samples were analyzed. Total Vibrio counts were found to range up to 2.5 × 103 cfu/gm and 60 cfu/gm in shrimp and Gher water samples, respectively. Results revealed that the total vibrio count were found to be higher in samples taking from the market shops in Dhaka city than Gher shrimp samples and the live shrimps were not contaminated with Vibrio species but dead shrimps were found contaminated, which were collected from shrimp Gher. In the antimicrobial susceptibility test, highest 28.57% resistance among total Vibrio isolates was observed to penicillin and cephalexin. Among the seven isolates of Vibrio species from Gher water sample one isolate displayed multi-drug resistance (MDR). The main reason of antibiotic resistance could be the indiscriminate application of antibiotics in shrimp far...
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Abstract: The shrimp sector is the second largest export earner for Bangladesh, which is a major contributor in the national economy of Bangladesh. It also provides millions of employment. Every year a huge amount of shrimps are rejected... more
Abstract: The shrimp sector is the second largest export earner for Bangladesh, which is a major contributor in the national economy of Bangladesh. It also provides millions of employment. Every year a huge amount of shrimps are rejected to export due to its pathogenic bacterial contamination. A comparative study regarding prevalence and antimicrobial susceptibility of pathogenic bacteria in the black tiger shrimp (Penaeus monodon Fabricius) were analyzed in terms of coliform, fecal coliform, Salmonella- ...