Effect of in situ water management and intercropping systems on yield of rainfed cotton.

摘要

A field experiment was conducted to study the effect of in situ rain water conservation in cotton-based intercropping system on deep black soil. It was observed that the seed cotton yield of sole cotton was significantly superior over different intercropping systems. All the intercropping systems recorded significantly higher seed cotton equivalent yield over sole cotton. Among intercropping systems cotton+greengram was significantly superior over cotton+soybean and cotton+blackgram. Opening of furrow after every row recorded higher seed cotton yield and seed cotton equivalent yield over flat bed land layout and it was at par with opening of furrow after alternate row. Among intercropping systems cotton+greengram and among land layouts opening of furrow after every row recorded significantly highest gross monetary return over other treatments. Opening of furrow after every row or at alternate row induced in situ soil moisture conservation after the harvest of intercrop, thereby creating soil moisture availability in the later growth stages of cotton. This ultimately resulted in higher seed cotton yield.