reza bahramloo; seyed mohsen seyedan
Abstract
Trend of population growth and restricted resources highlights the necessity and importance of enhancing productivity of these resources. Increasing the quantity of agricultural products will be possible by increasing the area or yield of crops. In increasing the area of land, there would be limitations ...
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Trend of population growth and restricted resources highlights the necessity and importance of enhancing productivity of these resources. Increasing the quantity of agricultural products will be possible by increasing the area or yield of crops. In increasing the area of land, there would be limitations in water and other resources. The only way to increase the quantity of agricultural products is increasing the yield in the existing area, which is possible by promoting the inputs impacts. The aim of this study was to measure and compare the productivity of production factors in potato fields under sprinkler and furrow irrigationsystems in Kabodarahang plane. This project was performed using the stratified sampling with a questionnaire and interviewing 95 farmers. The collected data were analyzed in Cobb-Douglas production function. The results showed that in sprinkler irrigation system, the average productivity of seed and phosphate fertilizer were 10.9, 169 kg yield/kg input, respectively, and for water 6.5 kg/m3. These parameters for surface irrigation system were 9.8, 158.6 kg yield/kg input and 3 kg/m3. According to the results, in this area, the productivity of all production factors, specially water, are higher in sprinkler irrigation system. To enhance the productivity of production factors and optimal use of resources, especially water resources, it is recommended to use sprinkler irrigation in potato production.
Ali Ghadami Firouzabadi; m ch; seyed mohsen seyedan
Abstract
Optimal uses of water resources due to climate change and the recent drought conditions seem to be necessary. One of the most important and effective strategies is using the modern irrigation systems. Therefore, this experiment was conducted in Hamedan Agriculture and Natural Resources Research ...
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Optimal uses of water resources due to climate change and the recent drought conditions seem to be necessary. One of the most important and effective strategies is using the modern irrigation systems. Therefore, this experiment was conducted in Hamedan Agriculture and Natural Resources Research Center in a split plot arrangement based on a completely randomized block design with three replications. Main plots were irrigation systems (Sprinkler, Tape, and Furrow) and sub plots included wheat genotypes (Alvand, Toos, and two lines C-81-4 and CD-5009). In spite of different amounts of water used in the studied irrigation systems, results showed that grain yield of the evaluated genotypes did not have significant differences in different irrigation systems, although the difference between grain yield in the tape and the furrow irrigation system was around 1000 kg/ha. Also, differences among the evaluated genotypes were not significant. Water productivity in the tape, sprinkler, and furrow irrigation (regardless of effective rainfall), was 1.6, 1.1 and 0.69 kg per unit of water consumption, respectively. Water productivity in tape irrigation increased about 132% and 45 percent compared to furrow and sprinkler irrigation. Economic evaluation, however, showed that sprinkler and tape irrigation systems had economic justification for all of the evaluated genotypes in comparison with furrow irrigation. Besides, sprinkler irrigation had economic preferences in comparison to tape irrigation.
a gh; h d; m kh; m s
Abstract
Limited water and energy resources in the world and the increasing demand for water and energy due to population growth and the development of human societies necessitate investigation of the water and energy consumption in irrigation systems. This study aimed to evaluate the water and energy consumption, ...
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Limited water and energy resources in the world and the increasing demand for water and energy due to population growth and the development of human societies necessitate investigation of the water and energy consumption in irrigation systems. This study aimed to evaluate the water and energy consumption, losses, and efficiency of diesel pumping stations and was conducted in Hamadan Province farms during the period 2009 to 2011. Nebraska Pumping Plant Performance Criteria was applied to compare the performance of irrigation pumping stations. The results showed that the total efficiency varied from 7.2% to 24.3 percent. The average of total efficiency and wasted energy of a diesel pump was calculated at about 14.7 percent and 4.84 liters per hour, respectively. The results showed that in many farms where sprinkler systems were used, the water applied was lower than crop water requirement. Average water use efficiency in alfalfa fields in the furrow and sprinkler systems was 1.7 and 2.7 kg/m3, respectively. The factors influencing decrease in energy efficiency were worn-out pump or motor, inappropriate implementation foundation for the pump engine, and inappropriate selection of engine for the pump.