The study investigated the response of Amaranth to irrigation depth and irrigation interval as well as poultry waste incorporation. A replicated 4 ×3 × 3 factorial arrangement with treatments consisting of p...The study investigated the response of Amaranth to irrigation depth and irrigation interval as well as poultry waste incorporation. A replicated 4 ×3 × 3 factorial arrangement with treatments consisting of percent organic matter incorporation （0%, 2%, 4% and 6% by weight）, irrigation interval （1, 3 and 5 days） and irrigation depth （4, 6 and 8 mm） was used for the experiment which was conducted in pots in a green house. The result of the experiment showed that percent organic matter incorporation, irrigation interval, and irrigation depth significantly （P 〈 0.05） affected the dry matter yield of the vegetable. However, only the percent organic matter incorporation and irrigation interval were significant （P 〈 0.05） in their effects on the plant height. The highest plant height of 12.03 cm occurred when 2% organic matter was incorporated into the soil while the lowest plant height of 9.04 cm occurred with 6% organic matter incorporation. The maximum plant yield （47.44 kg/ha） occurred when 2% poultry litter was incorporated into the soil while the lowest plant yield （31.57 kg/ha） occurred with the control experiment. Irrigation interval of three days as well as irrigation depth of 6 mm resulted in the highest plant height and maximum dry matter yield of the vegetable. From the result of the experiment, the factor combination of 2% organic matter incorporation with 6 mm irrigation depth applied at three days irrigation interval resulted in the highest plant height of 16.7 cm above ground surface and maximum yield of 67.8 kg/ha.展开更多
Species of Paulownia are fast-growing trees that are planted in many countries in green spaces and agroforestry systems. We studied the influence of irrigation on the diameter growth of 2-year-old Paulownia tomentosa ...Species of Paulownia are fast-growing trees that are planted in many countries in green spaces and agroforestry systems. We studied the influence of irrigation on the diameter growth of 2-year-old Paulownia tomentosa saplings planted in 3 m 9 3 m grids at Nazlou Campus of Urmia University, Iran. Completely randomized experimental design was used with four irrigation amount, viz.10, 15, 20 and 25 L, and three irrigation intervals, viz. 3-and 6-days, in 8 replications. During the growth season, we measured collar diameters of all saplings at the end of each month. Diameter growth declined with reduced irrigation amount and increased irrigation interval. The lowest average diameter growth（9 mm） was recorded for 10 L water at 6-day intervals and maximum average diameter growth（28.7 mm） was recorded for 25 L volume at 3-day intervals. The latter treatment resulted in significantly greater diameter growth than any other treatment（except20 L at 3-day intervals）. More than 80 % of diameter growth was achieved in the first 3 months. Therefore, it is essential to irrigate with 25 L of water at 3-day intervals during the first three growth months to achieve maximum diameter growth for 2-year-old P. tomentosa saplings.展开更多
Intercropping has benefited the global agricultural sector in several ways.It is a critical farming practice for long-term productivity,agro-ecological improvement,land management and land use.It is a well-known metho...Intercropping has benefited the global agricultural sector in several ways.It is a critical farming practice for long-term productivity,agro-ecological improvement,land management and land use.It is a well-known method to increase soil health and crop productivity.Mixtures of cereals and legumes are used extensively for forage production.Mix between maize(Zea mays)and soya bean(Glycine max L.)was used to investigate intercropping effect on moisture and temperature of soil related to yield of maize.The experiment was carried out with randomized complete block design with four replications.The results showed that intercropping systems had non-significant effect on yield of maize.But it affected soil conditions especially between plant;and reduced soil temperature rang about 0.3-8℃ affected by treatment of soya bean sowing methods(W2)for both seasons.The percentage of soil moisture content was increased about 1%-18%in treatment W2.It was because of increase of percentage of canopy cover fraction by soya bean covered,the conditions area of maize was adapted to give chance for increased irrigation intervals of maize without making stress.展开更多
文摘The study investigated the response of Amaranth to irrigation depth and irrigation interval as well as poultry waste incorporation. A replicated 4 ×3 × 3 factorial arrangement with treatments consisting of percent organic matter incorporation （0%, 2%, 4% and 6% by weight）, irrigation interval （1, 3 and 5 days） and irrigation depth （4, 6 and 8 mm） was used for the experiment which was conducted in pots in a green house. The result of the experiment showed that percent organic matter incorporation, irrigation interval, and irrigation depth significantly （P 〈 0.05） affected the dry matter yield of the vegetable. However, only the percent organic matter incorporation and irrigation interval were significant （P 〈 0.05） in their effects on the plant height. The highest plant height of 12.03 cm occurred when 2% organic matter was incorporated into the soil while the lowest plant height of 9.04 cm occurred with 6% organic matter incorporation. The maximum plant yield （47.44 kg/ha） occurred when 2% poultry litter was incorporated into the soil while the lowest plant yield （31.57 kg/ha） occurred with the control experiment. Irrigation interval of three days as well as irrigation depth of 6 mm resulted in the highest plant height and maximum dry matter yield of the vegetable. From the result of the experiment, the factor combination of 2% organic matter incorporation with 6 mm irrigation depth applied at three days irrigation interval resulted in the highest plant height of 16.7 cm above ground surface and maximum yield of 67.8 kg/ha.
文摘Species of Paulownia are fast-growing trees that are planted in many countries in green spaces and agroforestry systems. We studied the influence of irrigation on the diameter growth of 2-year-old Paulownia tomentosa saplings planted in 3 m 9 3 m grids at Nazlou Campus of Urmia University, Iran. Completely randomized experimental design was used with four irrigation amount, viz.10, 15, 20 and 25 L, and three irrigation intervals, viz. 3-and 6-days, in 8 replications. During the growth season, we measured collar diameters of all saplings at the end of each month. Diameter growth declined with reduced irrigation amount and increased irrigation interval. The lowest average diameter growth（9 mm） was recorded for 10 L water at 6-day intervals and maximum average diameter growth（28.7 mm） was recorded for 25 L volume at 3-day intervals. The latter treatment resulted in significantly greater diameter growth than any other treatment（except20 L at 3-day intervals）. More than 80 % of diameter growth was achieved in the first 3 months. Therefore, it is essential to irrigate with 25 L of water at 3-day intervals during the first three growth months to achieve maximum diameter growth for 2-year-old P. tomentosa saplings.
文摘Intercropping has benefited the global agricultural sector in several ways.It is a critical farming practice for long-term productivity,agro-ecological improvement,land management and land use.It is a well-known method to increase soil health and crop productivity.Mixtures of cereals and legumes are used extensively for forage production.Mix between maize(Zea mays)and soya bean(Glycine max L.)was used to investigate intercropping effect on moisture and temperature of soil related to yield of maize.The experiment was carried out with randomized complete block design with four replications.The results showed that intercropping systems had non-significant effect on yield of maize.But it affected soil conditions especially between plant;and reduced soil temperature rang about 0.3-8℃ affected by treatment of soya bean sowing methods(W2)for both seasons.The percentage of soil moisture content was increased about 1%-18%in treatment W2.It was because of increase of percentage of canopy cover fraction by soya bean covered,the conditions area of maize was adapted to give chance for increased irrigation intervals of maize without making stress.
