In the field trials conducted for three years, at the National Pulses Research Centre, Vamban, significant effect of phosphorus and sulphur application was observed in black gram.. Phosphorus 60 kg/ha and 40 kg/ha increased the growth, yield attributes and yield. There was 13.9% yield increase in sulphur @ 40 kg/ha than control. A positive interaction existed between phosphorus and sulphur application. Among all the treatments, ProSo was superior and it was on par with PaSan. The economic analysis also revealed a higher cost-benefit ratio in PanSan treatinent.
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