Effect of oxygation with respect to dripper depths on yield and water use efficiencies of soybean and pumpkin in vertisols

The purpose of the current study was to compare the role of oxygation on shallow vs deep delivery of subsurface drip irrigation on the root distribution, yield, water use efficiency and physiological response of vegetable soybean and pumpkin. The knowledge of rooting pattern is essential to irrigation and fertilizer management and consequently to achieving greater yield and quality. The objective of the study was to compare the effect of oxygation with respect to drip tape depth on soybean (at 5, 15, 25, and 35 cm) and pumpkin (at 5 and 15 cm) under controlled and field situation respectively. Plant response to drip depth with respect to oxygation, was studied in a temperature controlled environment (with vegetable soybean) and on a field scale cotnmercial level (pumpkin).