Impact of Different Soil Moisture Depletion, Nitrogen and Biofertilizer Application Levels on Yield-Water Productivity of Wheat and Sunflower at North Delta.

Abstract

Two field trials were carried out at the experimental farm, Sakha Agricultural Research Station, Kafr El-Sheikh governorate during the two growing seasons 2014/ 2015 to investigate the effect of soil moisture depletion, nitrogen and biofertilizer application levels on yield water productivity of wheat and sunflower. The experiments were designed as split split plot with three replicates. The main plots were occupied by soil moisture depletion, while sub plots were devoted to nitrogen rates and sub sub plots were biofertilizer treatments. The main results can be summarized as follows: -Water applied and water consumptive use by wheat and sunflower were recorded highest values under irrigation I 1 .The highest values of water stored in the root zone, were recorded by irrigation I 1 while water application efficiency was achieved under I 2 either by wheat or sunflower crops. Water productivity and the amount of applied water were recorded highest values under irrigation I 2 and N 3 . The net income was recorded the highest value with I2 under N3 and b3. While the economical efficiency was recorded the highest value (2.81) by I2 with N3 for wheat. On the other hand, Net income for sunflower seed and economical efficiency were recorded the highest value 5368 LFed. -1 and (2.25) by under irrigation at 50% depletion of available soil moisture (I2) with 50kg Nfed. -1 and b3. It could be concluded that application of biotol + phosphorene +75 kgNFed. -1 for wheat. While addition of biotol+ phosphorene +50 kgNFed. -1 for sunflower under irrigation at 50% depletion of available soil moisture could be economically used for production of wheat and sunflower as well as under water shortage without adverse effect on wheat and sunflower productivity Copy Right, IJAR, 2016,. All rights reserved.