Intercropping and weed management effects on weed dynamics, productivity and economics of pigeonpea

A field experiment was conducted to study the weed dynamics, productivity and economics of pigeonpea [Cajanus cajan (L.) Millsp.] under intercropping and weed management practices under rainfed. Among intercropping systems, greengram and blackgram were planted in paired row (2:2) system at 30/90 cm row spacing in main plots and six weed management treatments include pre-emergence herbicides (pendimethalin and oxiflourfen), post-emergence herbicide (imazethapyr) and their combinations in sub plots. Both the intercropping systems (pigeonpea + greengram or pigeonpea + blackgram) recorded higher Crop Equivalent Yield (CEY) (1.23 to 1.36 t/ha), Land Equivalent Ratio (LER) (1.6) and B: C ratio (2.5 - 2.7) than sole pigeonpea. Among herbicide treatments significantly higher weed controlling efficiency was recorded in pendimethalin + imazethapyr and oxyflourfen + imazethapyr (90.6 - 91.5%) as compared to pendimethalin or oxiflourfen or imazethapyr (72.1 - 84.6%).