Abstract
Field experiment was carried out at tractors and farm machinery testing &research station, Alex. Governorate, Egypt, during the summer season of 2017, to evaluate the effect of three levels of water requirements and two sources of nitrogen fertilization on the vegetation growth and yield of maize (zea maize L.) and some soil properties. The experiment included nine treatments which were arranged in a split plot based on RCBD design,and replicated three times. Main plotsconsisted of100% of water requirements for maize plant [100%WR], 80% of water requirements [80%WR] and 60% of water requirements [60%WR], while three fertilization types: Organic manure [OM] contains 120 unit’s organic nitrogen [ON], Mineral nitrogen fertilizer [MnF] contains 120 unit’s mineral nitrogen [MnN], Mixture of [OM] & [MnF] with proportion (1:1) contains 120 unit’s nitrogen [XOMn], as well as control were arranged in sub plots. Recommended fertilization was applied according to Agriculture ministry system. Measured parameters were number of rows in one ear, number of grains in each row, weight of 100- kernel (g), grain yield and stover yield (Ton/Fed). Statistical analysis of the experimental data indicated that, the treatment [80%WR]+ [XOMn] was the greatest significant of T-N, Av-N, EC,T-P, Kb and Av-W in comparing with all treatments. Addition [XOMn] and (80%WR) resulted inhigh significant values of number of rows in one ear, number of grains in each row, weight of 100- grain (g), grain yield and stover yield (kg/fed).
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