Ecology, Environment and Conservation Paper

Vol. 22, April Suppl. Issue 2016; Page No.(459-466)

EFFECT OF INTEGRATED WEED MANAGEMENT ON YIELD AND NUTRIENT UPTAKE BY CLUSTERBEAN (CYAMOPSIS TETRAGONOLOBA (L.) TAUB) AND PEARLMILLET (PENNISETUM GLAUCUM) INTERCROPPING SYSTEM IN ARID AND SEMI ARID AREAS OF MADHYA PRADESH, INDIA

Manisha Shyam*and G. S. Rawat

Abstract

A field experiment was conducted during rainy (kharif) season of 2013 and 2014 to study the effect of weed management practices on clusterbean [Cyamopsis tetragonoloba (L.)] + pearlmillet (Pennisetum glaucum) based intercropping system under arid and semi arid conditions on a sandy loam soil at college of Agriculture, RVSKVV,Gwalior (M.P.). All parameters were significantly influenced by intercropping systems. The land equivalent ratio, total NPK uptake and yield of pearlmillet increased by legumes effect in intercropping system as compared to sole stand of pearlmillet. However, intercropped stand of clusterbean recorded its lower productivity (2853 kg ha-1) when compared to its sole stand (5145 kg ha-1), but intercropping system recorded statistically similar to clusterbean equivalent yield as compared to sole stand. Significantly improvement on total NPK uptake by crops and yield under weed management practices with the application of pendimethalin 1.5 kg ha-1 as pre emergence + one hand weeding at 25 DAS, followed by two hand weeding at 25 and 45 DAS over the weedy check in arid and semi arid conditions.

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