T WO field experiments were carried out at Sakha Agricultural Research Station, Kafr El-Sheikh Governorate during the two growing seasons 2015/2016 and 2016 to investigate the effect of irrigation regimes and soil amendments on some soil properties, some water relations and yields of wheat and maize. The experiments were conducted in strip block design with three replicates. The most important findings can be summarized as follows: Irrigation at 40% depletion of available soil moisture received the highest amount of irrigation requirements, consumed water and stored water. The highest values of irrigation application efficiency and water consumptive use efficiency were recorded with irrigation treatment at 55% depletion of available soil moisture (I 2) during two growing seasons. Water productivity (WP) and productivity of irrigation water (PIW), were recorded highest values under (I 2) for maize crop. While the highest values of WP and PIW for wheat and maize were achieved from the interaction between irrigation treatment (I 2) and soil amendments. The electric conductivity, sodium adsorption ratio, exchangeable sodium percentage were clearly improved and reducing of soil bulk density and increasing soil basic infiltration rate with application of soil amendments. Irrigation treatments and soil amendments have highly significant effect on increasing of yield of wheat and maize. Economic evaluation recorded the highest values of total income, net income, economic efficiency and net income from water unit with application of compost at rate of 5 ton fed-1 under I 2 for wheat and maize crops.
The objective of evaluating surface irrigation systems is to identify management practices and system configurations that can be feasibly and effectively implemented to improve the irrigation efficiency.Two field experiments were conducted at Sakha Agricultural Research Station, Kafr Elshiekh Governorate during two successive summer seasons (2006 and 2007) to study the evaluation of surge, alternative and continuous flow in furrow irrigation with cotton crop. A randomized complete block design with four replicates was used and the irrigation treatments were as follows; surge flow with cycle ratio 0.5 (5 min. on and 5 min. off or 10 min. on and 10 min. off), surge flow with cycle ratio 0.66 (10 min. on and 5 min. off or 20 min. on and 10 min. off), surge flow with cycle ratio 0.75 (15 min. on and 5 min. off or 30 min. on and 10 min. off), alternative furrow irrigation and continuous flow.The results indicated that the performance of the system during the evaluation was acceptable in case of surge flow at 0.75 cycle ratio with 30 min. on and 10 min. off in the two growing seasons. In case of continuous flow, the performance of the system was poor since about 48 percent of all water applied was lost from the field as runoff or deep percolation.
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