Madras Agricultural Journal
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P MANAGEMENT IN RICE-RICE-GREENGRAM CROPPING SYSTEM

Abstract

The productivity and economics of rice-rice-greengram cropping system under different P management practices were studied. The optimal P management schedules for the highest total productivity and profit were green manuring combined with superphosphate application in the first crop rice and long stubble (25 cm) incorporation with superphosphate application in the second crop of rice, short stubble (10 cm) incorporation with superphosphate application in the second crop or short stubble incorporation with rock-phosphate application in the second crop.

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