Abdou, S., Emam, S. (2016). RESPONSE OF WHEAT GROWN ON OLD - CULTIVATED SOIL TO LIQUID AMMONIA FERTILIZATION AND WATER MANAGEMENT VIA DIFFERENT LEVELS OF SOIL MOISTURE DEPLETION. Menoufia Journal of Soil Science, 1(1), 77-91. doi: 10.21608/mjss.2016.176577
S.M.M. Abdou; S. M. Emam. "RESPONSE OF WHEAT GROWN ON OLD - CULTIVATED SOIL TO LIQUID AMMONIA FERTILIZATION AND WATER MANAGEMENT VIA DIFFERENT LEVELS OF SOIL MOISTURE DEPLETION". Menoufia Journal of Soil Science, 1, 1, 2016, 77-91. doi: 10.21608/mjss.2016.176577
Abdou, S., Emam, S. (2016). 'RESPONSE OF WHEAT GROWN ON OLD - CULTIVATED SOIL TO LIQUID AMMONIA FERTILIZATION AND WATER MANAGEMENT VIA DIFFERENT LEVELS OF SOIL MOISTURE DEPLETION', Menoufia Journal of Soil Science, 1(1), pp. 77-91. doi: 10.21608/mjss.2016.176577
Abdou, S., Emam, S. RESPONSE OF WHEAT GROWN ON OLD - CULTIVATED SOIL TO LIQUID AMMONIA FERTILIZATION AND WATER MANAGEMENT VIA DIFFERENT LEVELS OF SOIL MOISTURE DEPLETION. Menoufia Journal of Soil Science, 2016; 1(1): 77-91. doi: 10.21608/mjss.2016.176577
RESPONSE OF WHEAT GROWN ON OLD - CULTIVATED SOIL TO LIQUID AMMONIA FERTILIZATION AND WATER MANAGEMENT VIA DIFFERENT LEVELS OF SOIL MOISTURE DEPLETION
1Soil, Water and Environment Research Institute, A.R.C., Giza, Egypt
2Agronomy Dept., Faculty of Agriculture, Fayoum University, Egypt.
Abstract
Field experiment was carried out at FayoumAgric. Res. Station, Tameia, Fayoum Governorate, Egypt. during 2013/14 and 2014/2015 winter seasons to study the effect of 80 and 100 kg N fed-1 (as liquid ammonia, 82.4 % N) and irrigating at 40, 60 and 80% of total available soil moisture were depleted (ASMD) on yield, yield components and some crop - water relations of wheat (Giza 168). A split plot design with four replications was applied, where N rates were assigned to main plots, whereas irrigation regimes were arranged in the split plots. The obtained results exhibited that: *Wheat grain and straw yields as well as yield components i.e. plant height, spike number m-2 and 1000-grain weigh were significantly affected by N fertilizer rates, irrigation regimes and their interaction in 1st and 2nd seasons. Applying 100 kg N fed-1 and/or irrigating at 40% ASMD regime exhibited the highest values of the abovementioned parameters. * Applying 100 kg N fed-1 and/or irrigating at 40% ASMD regime exhibited higher water use (Cu) values, whereas, 80 kg N fed-1 and/or irrigating at 80% ASMD regime resulted in the lowest values at 1st and 2nd seasons.The values of daily ETC was increased with increasing N rate, and the same trend was observed with irrigating at 40% ASMD regime and such findings were recorded in the two seasons of study. Reducing N rate from 100 to 80 kg Nfed-1 decreased the KC values during the entire growing seasons, and increasing the SMD from 40 to be 60 or 80% exhibited similar trends 1st and 2nd seasons. * Values of WUE, as a function of N fertilization rates and irrigation regimes, were 1.25 and 1.22 kg grain m-3 water consumed at 1st and 2nd seasons, respectively. Applying 100 kg N fed-1 resulted in higher WUE values which comprised 1.26 and 1.23 kg grains m-3 water consumed at 1st and 2nd seasons, respectively. Irrigating wheat crop at 40% ASMD regime resulted in the highest WUE values, which reached to 1.28 and 1.25 kg grains m-3 water consumed at 1st and 2nd seasons, respectively. The interaction data reveal that the highest WUE values (1.29 and 1.26 kg grains m-3 water consumed) were occurred with 100 kg Nfed-1 rate as interacted with 40 % ASMD regime in 1st and 2nd seasons, respectively,