Prof. in Pomology (Fruit Tree Growing) at University of Thessaly, Gaiopolis - 41500 Larissa, GREECE Phone: +302410684283 & +302410684284 Address: Univ. of Thessaly, Gaiopolis, 41500Larissa, Dep. of Agricultural Agrotechnology, "Horticultural & Soil Resources Laboratory, HORTLAB"
The paper describes the morphology of two species of powdery mildew of Cydonia oblonga caused by ... more The paper describes the morphology of two species of powdery mildew of Cydonia oblonga caused by Podosphaera clandestina and Setoerysiphe kashmeriensis reported for the first time in cydonia orchards in Greece.
ABSTRACT Series of experiments were conducted in order to examine the effect of neem and commerci... more ABSTRACT Series of experiments were conducted in order to examine the effect of neem and commercial organic fertilizer (Geo) on soil organic matter, chemical properties and microbial flora. Five grams of neem tissues or 5 g of Geo were added into soil samples (50 g each) with low content in organic matter. After an incubation period (15 weeks), soil organic matter content, concentration of N, P, K, Cu, Zn and Mn, and number of bacterial colonies were counted. The integration of neem and Geo in soil added equivalent content of organic matter. Geo increased soil electrical conductivity, and the content of available forms of N-NO3, P, Zn and Mn in soil samples. On the contrary, neem increased soil pH and the content of available forms of N-NH4, K and Cu. However, both neem and Geo increased the content of organic-P. In addition, soil treated with neem had lower number of bacterial colonies compared to control and Geo.
International Journal Of Recycling of Organic Waste in Agriculture, 2013
Background The profitable use of the large amounts of olive oil mill wastes produced in Greece, a... more Background The profitable use of the large amounts of olive oil mill wastes produced in Greece, as source of soil organic matter, might be probably beneficial to soil microorganism activity. Results A high rate of organic matter biodegradation was observed in soil samples amended with the liquid form of olive mill wastewater, whereas the vice versa results were obtained with the solid form. When the soil was amended with a mixture of both olive mill waste forms, liquid (L) and solid (S), the organic matter of the solid waste (S) showed a well-improved biodegradation; the available forms of P, K, Zn, Mn, and Cu were increased, especially in treatments where the olive mill wastewater, liquid form, was threefold in comparison to the solid form. Moreover, the soil amended with the solid (S) form of olive mill waste reduced bacterial growth significantly, and both waste forms act negative impacts to soil-borne fungi belonging to the genus Rhizopus. Conclusions The results of this work de...
Camellias are widely cultivated in gardens and grown in nurseries for plant and flower production... more Camellias are widely cultivated in gardens and grown in nurseries for plant and flower production in northwestern Spain. Camellia japonica L. is most frequently grown, but many other camellia species and hybrids are also produced. In spring 1998, plants of Camellia sp. from a garden were observed to be affected by a root fungal pathogen, that formed a white mycelium that covered most of the roots, while aboveground plant parts showed a general decline. Infected roots were macerated and discolored. Fragments of the infected roots were surface-sterilized and placed in petri dishes containing potato dextrose agar and incubated at 24°C in the dark. The fungus formed a white mycelium that turned black in 1 week, developing pyriform swellings characteristic of Rosellinia necatrix Prill (1). To confirm pathogenicity, inoculum of the isolate was produced on wheat (Triticum aestivum L.) seeds autoclaved in glass vessels for 30 min at 120°C. Wheat seed cultures were started from disks of R. n...
The study involved 16 red-wine brands produced from more than one grape cultivars originated from... more The study involved 16 red-wine brands produced from more than one grape cultivars originated from different regions of Greece. The total phenol contents ranged from 1360 to 3970 ppm gallic acid equivalents, and their anthocyans varied from 10 to 428 μM malvidin-3-glucoside equivalents. The antiradical activity, assessed through inhibiting the free stable radical DPPH varied from 2.96 to 14.80 μmol DPPH/ml and the antioxidant capacity determined by the FRAP assay ranged from 9.95 to 26.75 μmols FRAP/ml wine. The antioxidant and antiradical activity of the wines tested depended strongly on the total phenolic content. This work showed that Greek red wine is important antioxidant source, a valuable tool for local nutraceutical industries which will make them great competitors in the global market.
In greenhouse cucumber plants which were growing in soil with increased salinity (EC 0.66 dS/m), ... more In greenhouse cucumber plants which were growing in soil with increased salinity (EC 0.66 dS/m), the omission of basic fertilization was tasted. During cultivation period the fertigation programme was organized according to soil salinity level, plant’s growth and leaf tissue analysis. Soil salinity declined through cultivation period while plant’s yield did not affected by fertilization process. Plant’s need for nutrients was partially covered by soil salts and the amount of applied fertilizers was limited. However, significant increase in soil salinity was observed after soil solarisation.
The book Processing Agricultural Products describes the main chemical and functional properties o... more The book Processing Agricultural Products describes the main chemical and functional properties of agricultural product components. It describes the processing techniques of a number of agricultural products, such as wine, tsipouro, sugar and olive oil. This book is valuable reference for undergraduate studens of horticultural science and also for technologists in wine and olive oil industry. (GREEK , 189 Pages).
In Soilless tomato cultivation, with coir substrate, the variability of electrical conductivity a... more In Soilless tomato cultivation, with coir substrate, the variability of electrical conductivity and pH of the used nutrient solution, during the influx and efflux (open system), was studied, in the greenhouse (TEI of Larissa). During fertigation, the electrical conductivity (EC) of the inflow of the solution fluctuated from 1.80 to 2.37 dS.m-1 and pH from 5.5 to 6.8, while for the runoff solution the electrical conductivity fluctuated from 2.0 to 3.33 dS.m-1 and pH from 5.5 to 6.9. With regard to the substrate of coir, the electrical conductivity throughout the duration of the crop ranged from 0.3 to 1.13 dS.m-1 (water extract of 1part of coir: 5 parts of H2O) and pH from 5.87 to 6.83. According to the study, the coir is a good choice as substrate, for tomato soilless cultivation, with satisfactory return.
Some of the most essential factors, that must be met to achieve optimal production of the industr... more Some of the most essential factors, that must be met to achieve optimal production of the industrial tomato and ensure exceptional product quality, are the adequacy of water and nutrients and sunshine. The present study explores the relations between fertilization and production of the outdoor industrial tomato. The experimental data show a positive correlation of fertilization with some of the quantitative and qualitative characteristics examined. The results can be utilized to the optimum use of the fertilization treatment of the crop with minimal effect on the soil and aqueous environment.
In the present research chemical analysis was made in 18 Greek wines, red and white wines, select... more In the present research chemical analysis was made in 18 Greek wines, red and white wines, selected from different regions of Greece. The results showed that for all wines the total phenols (presented as Gallic acid equivalents or catechin) varies from 215 up to 3800 ppm. Antiradical activity for the red wines it was found higher with a mean value 4,64 μM, while the antiradical activity for the white wines it was found lower with a mean value 0,42 μM. The effective concentration (EC50), concerning the phenols has a high value for all types of wines. Phenolic antioxidant index was higher for the red wines with values 153 up to 596 and lower for the white wines with values 14 up to 30. We concluded that phenolic antioxidant index it can be used as indicator of antioxidants force of wines.
In the present research chemical analysis was made in 18 Greek wines, red and white wines, select... more In the present research chemical analysis was made in 18 Greek wines, red and white wines, selected from different regions of Greece. The results showed that for all wines the total phenols (presented as Gallic acid equivalents or catechin) varies from 215 up to 3800 ppm. Antiradical activity for the red wines it was found higher with a mean value 4,64 µM, while the antiradical activity for the white wines it was found lower with a mean value 0,42 µM. The effective concentration (EC50), concerning the phenols has a high value for all types of wines. Phenolic antioxidant index was higher for the red wines with values 153 up to 596 and lower for the white wines with values 14 up to 30. We concluded that phenolic antioxidant index it can be used as indicator of antioxidants force of wines.
In this work, spatial plant density and fertilization level effect were studied on plant height, ... more In this work, spatial plant density and fertilization level effect were studied on plant height, dry drogue yield, essential oil production, total phenolics content and antioxidant activity of M. piperita leaf. Plant density increased crop height and expand arithmetically suckers production. Fertilized crops with spatial density of 4 plants /m2 demonstrated greatest average plant height while crops with plant density of 2 plants/ m2 maximized their sucker production independently of their fertilization scheme. In terms of dry drogue yield and leaf essential oil content comparison between the two seasonal harvests (early June and September), the first harvest revealed higher delivery quantities for both substance categories than second one. Analytically estimated concentration of total phenolics of the Mentha piperita leaf ranged of from 27.37 to 58.43 mg g-1 and the antiradical activity ranged from 18.01 to 38.73 μmols DPPH• g-1 dry weight. The correlation between total phenolics an...
In greenhouse cultivation with spinach and endive, the effectiveness of implementation of mixture... more In greenhouse cultivation with spinach and endive, the effectiveness of implementation of mixture of solid and water soluble olive oil mill waste, in replacement of mineral base dressing, was tested. The mixture of olive mill waste used, was constituted in the ratio of (1solid:3 water soluble); the used mixture correspond to 21 tons of water soluble waste and 7 tons of solid waste per hectare, or 17.34 kg of N, 22.63 kg of P2O5 and 98.7 kg of K2O per hectare; though, the needs of the plants, were satisfied with complementary mineral addition as top dressing, via irrigation. The soil electrical conductivity during the cultivation was maintained at relatively low levels, with values ranging from 0.25 to 0.64 dSm-1 (water extract, 1 soil: 5H2O). The study showed that the incorporation of that mixture to soil, is an efficient amendment for greenhouse soil with vegetable crops; at the end of the growing period, soil salinity was maintained at low levels, no increase of heavy metals was o...
In this work, the cultivation of hydroponic tomato in stone wool substrate in two greenhouses of ... more In this work, the cultivation of hydroponic tomato in stone wool substrate in two greenhouses of TEI Thessaly is evaluated. One greenhouse is of conventional type (open system) and the second one is a closed system type using shallow geothermic with heat pumps. The thickness and the height of plants, the number of leaves and inflorescences, the total water consumption and the production were recorded. In conventional greenhouse, the growth and the thickness of plants were lower as compared with the geothermal greenhouse, throughout the duration of the growing season. Also, the number of inflorescences was less in conventional greenhouse as compared with the geothermal one, throughout the duration of the growing season. The water consumption in the geothermal was 1680 m3/ha, while in the conventional greenhouse was 5000 m3/ha. Finally, the crop production in the geothermal greenhouse was of better quality and reached 286 t/ha, while in the conventional greenhouse was 199 t/ha.
European plum culture is changing because of the need to increase production efficiency, fruit qu... more European plum culture is changing because of the need to increase production efficiency, fruit quality and deal with the Sharka disease. Depending on the biological material (cultivars and rootstocks), specificity and use of fruit, various cultural systems can be used to enhance productivity, fruit quality and economic returns. Several cultural systems have been tried comparatively: the classical system (trees planted at 6 by 5 m, 333 trees/ha); the intensive system with two densities (trees planted at 5 by 4 m (500 trees/ha) and 4 by 2 m (1250 trees/ha)), and two containerized systems (trees planted in 90-L containers buried in the soil and not buried in the soil and spaced at a density of 1665 trees/ha. The plum cultivars studied were: ‘Andreea’, ‘Minerva’, ‘Tuleu gras’ and ‘Stanley’. Into the 10th leaf the trunk cross sectional area (TCSA) varied from 17.1 cm2 in the case of trees in unburied containers to 250.0 cm2 in the classical system. Plum yields (3 year average) varied fro...
The paper describes the morphology of two species of powdery mildew of Cydonia oblonga caused by ... more The paper describes the morphology of two species of powdery mildew of Cydonia oblonga caused by Podosphaera clandestina and Setoerysiphe kashmeriensis reported for the first time in cydonia orchards in Greece.
ABSTRACT Series of experiments were conducted in order to examine the effect of neem and commerci... more ABSTRACT Series of experiments were conducted in order to examine the effect of neem and commercial organic fertilizer (Geo) on soil organic matter, chemical properties and microbial flora. Five grams of neem tissues or 5 g of Geo were added into soil samples (50 g each) with low content in organic matter. After an incubation period (15 weeks), soil organic matter content, concentration of N, P, K, Cu, Zn and Mn, and number of bacterial colonies were counted. The integration of neem and Geo in soil added equivalent content of organic matter. Geo increased soil electrical conductivity, and the content of available forms of N-NO3, P, Zn and Mn in soil samples. On the contrary, neem increased soil pH and the content of available forms of N-NH4, K and Cu. However, both neem and Geo increased the content of organic-P. In addition, soil treated with neem had lower number of bacterial colonies compared to control and Geo.
International Journal Of Recycling of Organic Waste in Agriculture, 2013
Background The profitable use of the large amounts of olive oil mill wastes produced in Greece, a... more Background The profitable use of the large amounts of olive oil mill wastes produced in Greece, as source of soil organic matter, might be probably beneficial to soil microorganism activity. Results A high rate of organic matter biodegradation was observed in soil samples amended with the liquid form of olive mill wastewater, whereas the vice versa results were obtained with the solid form. When the soil was amended with a mixture of both olive mill waste forms, liquid (L) and solid (S), the organic matter of the solid waste (S) showed a well-improved biodegradation; the available forms of P, K, Zn, Mn, and Cu were increased, especially in treatments where the olive mill wastewater, liquid form, was threefold in comparison to the solid form. Moreover, the soil amended with the solid (S) form of olive mill waste reduced bacterial growth significantly, and both waste forms act negative impacts to soil-borne fungi belonging to the genus Rhizopus. Conclusions The results of this work de...
Camellias are widely cultivated in gardens and grown in nurseries for plant and flower production... more Camellias are widely cultivated in gardens and grown in nurseries for plant and flower production in northwestern Spain. Camellia japonica L. is most frequently grown, but many other camellia species and hybrids are also produced. In spring 1998, plants of Camellia sp. from a garden were observed to be affected by a root fungal pathogen, that formed a white mycelium that covered most of the roots, while aboveground plant parts showed a general decline. Infected roots were macerated and discolored. Fragments of the infected roots were surface-sterilized and placed in petri dishes containing potato dextrose agar and incubated at 24°C in the dark. The fungus formed a white mycelium that turned black in 1 week, developing pyriform swellings characteristic of Rosellinia necatrix Prill (1). To confirm pathogenicity, inoculum of the isolate was produced on wheat (Triticum aestivum L.) seeds autoclaved in glass vessels for 30 min at 120°C. Wheat seed cultures were started from disks of R. n...
The study involved 16 red-wine brands produced from more than one grape cultivars originated from... more The study involved 16 red-wine brands produced from more than one grape cultivars originated from different regions of Greece. The total phenol contents ranged from 1360 to 3970 ppm gallic acid equivalents, and their anthocyans varied from 10 to 428 μM malvidin-3-glucoside equivalents. The antiradical activity, assessed through inhibiting the free stable radical DPPH varied from 2.96 to 14.80 μmol DPPH/ml and the antioxidant capacity determined by the FRAP assay ranged from 9.95 to 26.75 μmols FRAP/ml wine. The antioxidant and antiradical activity of the wines tested depended strongly on the total phenolic content. This work showed that Greek red wine is important antioxidant source, a valuable tool for local nutraceutical industries which will make them great competitors in the global market.
In greenhouse cucumber plants which were growing in soil with increased salinity (EC 0.66 dS/m), ... more In greenhouse cucumber plants which were growing in soil with increased salinity (EC 0.66 dS/m), the omission of basic fertilization was tasted. During cultivation period the fertigation programme was organized according to soil salinity level, plant’s growth and leaf tissue analysis. Soil salinity declined through cultivation period while plant’s yield did not affected by fertilization process. Plant’s need for nutrients was partially covered by soil salts and the amount of applied fertilizers was limited. However, significant increase in soil salinity was observed after soil solarisation.
The book Processing Agricultural Products describes the main chemical and functional properties o... more The book Processing Agricultural Products describes the main chemical and functional properties of agricultural product components. It describes the processing techniques of a number of agricultural products, such as wine, tsipouro, sugar and olive oil. This book is valuable reference for undergraduate studens of horticultural science and also for technologists in wine and olive oil industry. (GREEK , 189 Pages).
In Soilless tomato cultivation, with coir substrate, the variability of electrical conductivity a... more In Soilless tomato cultivation, with coir substrate, the variability of electrical conductivity and pH of the used nutrient solution, during the influx and efflux (open system), was studied, in the greenhouse (TEI of Larissa). During fertigation, the electrical conductivity (EC) of the inflow of the solution fluctuated from 1.80 to 2.37 dS.m-1 and pH from 5.5 to 6.8, while for the runoff solution the electrical conductivity fluctuated from 2.0 to 3.33 dS.m-1 and pH from 5.5 to 6.9. With regard to the substrate of coir, the electrical conductivity throughout the duration of the crop ranged from 0.3 to 1.13 dS.m-1 (water extract of 1part of coir: 5 parts of H2O) and pH from 5.87 to 6.83. According to the study, the coir is a good choice as substrate, for tomato soilless cultivation, with satisfactory return.
Some of the most essential factors, that must be met to achieve optimal production of the industr... more Some of the most essential factors, that must be met to achieve optimal production of the industrial tomato and ensure exceptional product quality, are the adequacy of water and nutrients and sunshine. The present study explores the relations between fertilization and production of the outdoor industrial tomato. The experimental data show a positive correlation of fertilization with some of the quantitative and qualitative characteristics examined. The results can be utilized to the optimum use of the fertilization treatment of the crop with minimal effect on the soil and aqueous environment.
In the present research chemical analysis was made in 18 Greek wines, red and white wines, select... more In the present research chemical analysis was made in 18 Greek wines, red and white wines, selected from different regions of Greece. The results showed that for all wines the total phenols (presented as Gallic acid equivalents or catechin) varies from 215 up to 3800 ppm. Antiradical activity for the red wines it was found higher with a mean value 4,64 μM, while the antiradical activity for the white wines it was found lower with a mean value 0,42 μM. The effective concentration (EC50), concerning the phenols has a high value for all types of wines. Phenolic antioxidant index was higher for the red wines with values 153 up to 596 and lower for the white wines with values 14 up to 30. We concluded that phenolic antioxidant index it can be used as indicator of antioxidants force of wines.
In the present research chemical analysis was made in 18 Greek wines, red and white wines, select... more In the present research chemical analysis was made in 18 Greek wines, red and white wines, selected from different regions of Greece. The results showed that for all wines the total phenols (presented as Gallic acid equivalents or catechin) varies from 215 up to 3800 ppm. Antiradical activity for the red wines it was found higher with a mean value 4,64 µM, while the antiradical activity for the white wines it was found lower with a mean value 0,42 µM. The effective concentration (EC50), concerning the phenols has a high value for all types of wines. Phenolic antioxidant index was higher for the red wines with values 153 up to 596 and lower for the white wines with values 14 up to 30. We concluded that phenolic antioxidant index it can be used as indicator of antioxidants force of wines.
In this work, spatial plant density and fertilization level effect were studied on plant height, ... more In this work, spatial plant density and fertilization level effect were studied on plant height, dry drogue yield, essential oil production, total phenolics content and antioxidant activity of M. piperita leaf. Plant density increased crop height and expand arithmetically suckers production. Fertilized crops with spatial density of 4 plants /m2 demonstrated greatest average plant height while crops with plant density of 2 plants/ m2 maximized their sucker production independently of their fertilization scheme. In terms of dry drogue yield and leaf essential oil content comparison between the two seasonal harvests (early June and September), the first harvest revealed higher delivery quantities for both substance categories than second one. Analytically estimated concentration of total phenolics of the Mentha piperita leaf ranged of from 27.37 to 58.43 mg g-1 and the antiradical activity ranged from 18.01 to 38.73 μmols DPPH• g-1 dry weight. The correlation between total phenolics an...
In greenhouse cultivation with spinach and endive, the effectiveness of implementation of mixture... more In greenhouse cultivation with spinach and endive, the effectiveness of implementation of mixture of solid and water soluble olive oil mill waste, in replacement of mineral base dressing, was tested. The mixture of olive mill waste used, was constituted in the ratio of (1solid:3 water soluble); the used mixture correspond to 21 tons of water soluble waste and 7 tons of solid waste per hectare, or 17.34 kg of N, 22.63 kg of P2O5 and 98.7 kg of K2O per hectare; though, the needs of the plants, were satisfied with complementary mineral addition as top dressing, via irrigation. The soil electrical conductivity during the cultivation was maintained at relatively low levels, with values ranging from 0.25 to 0.64 dSm-1 (water extract, 1 soil: 5H2O). The study showed that the incorporation of that mixture to soil, is an efficient amendment for greenhouse soil with vegetable crops; at the end of the growing period, soil salinity was maintained at low levels, no increase of heavy metals was o...
In this work, the cultivation of hydroponic tomato in stone wool substrate in two greenhouses of ... more In this work, the cultivation of hydroponic tomato in stone wool substrate in two greenhouses of TEI Thessaly is evaluated. One greenhouse is of conventional type (open system) and the second one is a closed system type using shallow geothermic with heat pumps. The thickness and the height of plants, the number of leaves and inflorescences, the total water consumption and the production were recorded. In conventional greenhouse, the growth and the thickness of plants were lower as compared with the geothermal greenhouse, throughout the duration of the growing season. Also, the number of inflorescences was less in conventional greenhouse as compared with the geothermal one, throughout the duration of the growing season. The water consumption in the geothermal was 1680 m3/ha, while in the conventional greenhouse was 5000 m3/ha. Finally, the crop production in the geothermal greenhouse was of better quality and reached 286 t/ha, while in the conventional greenhouse was 199 t/ha.
European plum culture is changing because of the need to increase production efficiency, fruit qu... more European plum culture is changing because of the need to increase production efficiency, fruit quality and deal with the Sharka disease. Depending on the biological material (cultivars and rootstocks), specificity and use of fruit, various cultural systems can be used to enhance productivity, fruit quality and economic returns. Several cultural systems have been tried comparatively: the classical system (trees planted at 6 by 5 m, 333 trees/ha); the intensive system with two densities (trees planted at 5 by 4 m (500 trees/ha) and 4 by 2 m (1250 trees/ha)), and two containerized systems (trees planted in 90-L containers buried in the soil and not buried in the soil and spaced at a density of 1665 trees/ha. The plum cultivars studied were: ‘Andreea’, ‘Minerva’, ‘Tuleu gras’ and ‘Stanley’. Into the 10th leaf the trunk cross sectional area (TCSA) varied from 17.1 cm2 in the case of trees in unburied containers to 250.0 cm2 in the classical system. Plum yields (3 year average) varied fro...
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