Experiment were conducted to study the crop coefficient (Kc) and water use Efficiency (WUE) of soyb
moreExperiment were conducted to study the crop coefficient (Kc) and water use Efficiency (WUE) of soybean as affected by soil moisture stress and fertility levels at Malir Experimental Farm, Sindh Agriculture University. Tnadojam, Pakistan on silt loam soil. The results revealed that crop efficient (Kc) increased with an increase in the crop age. The Kc was higher proportionate to higher moisture availability. The peak Kc was at 105-125 days after sowing, corresponding with early stage to complete fill stage of soybean crop. Water use efficiency at 5 bar tensions signified the plants under stress and were more efficient in utilizing water for the production of grain. The higher fertility was exhibited through appropriate fertilizer levels which in-turn increased the water use efficiency and compensated water deficiency. Thus, it is recommended that crop coefficient and fertility levels should be identified for obtaining maximum water use efficiency and yield targets.
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