Establishment technique, seed rate and fertilizer application to summer blackgram (Phaseolus mungo) in rice (Oryza sativa) fallows

Establishment technique, seed rate and fertilizer application to summer blackgram (Phaseolus mungo) in rice (Oryza sativa) fallows

1998

A:PS

A field experiment was conducted on clay loam soil during summer 1993 and 1994 in the Krishna-Godavari Delta, India to assess the establishment, sowing rate and fertilizer requirements of black gram (Phaseolus mungo [Vigna mungo]) cv. LBG 611 in rice (Oryza sativa) fallows. Broadcasting dry black gram seed immediately after withdrawal of water (1 week before rice harvesting) was found conducive for rapid penetration of hypocotyl into the soil which gave better stand establishment, deep root growth, yield components, seed and haulm yields. The lower sowing rate (45 kg/ha) recorded more fruiting branches, pods/plant an seeds/pod and enhanced seed yield by 11.5% more than higher sowing rate (70 kg/ha). Addition of N and P fertilizers irrespective of application date had a marked influence on tap root growth and augmented the seed yield by 46.4% over no fertilizers. Application of N and P just before rice harvesting recorded 7.8 higher black gram seed yield than when it was applied at rice flowering.

v.43(3):411-413, INDIAN JOURNAL OF AGRONOMY

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