YIELD AND ECONOMICS OF JUTE (CORCHORUS-OLITORIUS) POTATO (SOLANUM-TUBEROSUM) GREENGRAM (PHASEOLUS-RADIATUS) CROPPING SYSTEM IN UPLAND

An experiment was conducted with rainy-season (kharif) jute (Corchorus olitorius L.) winter season (rabi) potato (Solanum tuberosum L.) and summer season mungbean (Phaseoius, radiatus L.) during 1989-90 and 199 0-91. Of the 2 jute cultivars. 'JRO 7835' ('Basudev') showed better pe rformance than 'JRO 524' ('Nabin') in respect of height. basal girth a nd fibre yield in kharif. In rabi fertilizer doses (150, 100 and 100; 75, 50 and 50 kg/ha of N, P2O5 and K2O) and irrigation levels (adequat e and half of the adequate level) resulted in a significant effect oil potato regarding consumptive use and tuber yield. The residual effect of fertilizers and irrigation, applied to potato resulted in some inf luence on mungbean. The highest net return was bought about with 150. 100 and 100 kg/ha or N, P2O5, and K2O and adequate supply of irrigatio n water.