Ecology, Environment and Conservation Paper

Vol 25, Issue 1 2019; Page No.(352-355)

IMPACT OF LAND CONFIGURATION, POST-MONSOON IRRIGATION AND PHOSPHORUS ON PERFORMANCE OF SOLE AND INTERCROPPED PIGEONPEA (CAJANUS CAJAN)

S. Krishnaprabu

Abstract

A field experiment was conducted during the rainy season 2016 at Experimental Farm, Annamalai University to find out the effect of land configuration, post-monsoon irrigation and phosphorus fertilization on performance of pigeonpea [Cajanus cajan (L.) Millsp.] grown sole and intercropped with urdbean [Vigna mungo (L.) Hepper]. The broad-bed and furrow planting and post-monsoon irrigation at 0.4 IW: CPE ratio improved the yield attributes (pods/plant and seeds/pod) of pigeonpea over flat planting and unirrigated pigeonpea, leading to similar increase in grain yield of pigeonpea by 10%. An intercropping of pigeonpea with urdbean had no effect on pigeonpea yield, but the additional urdbean yield in intercropping resulted in markedly higher total productivity in terms of pigeonpea-equivalent yield. The grain yield of pigeonpea increased up to 40 kg P2O5/ha only. However, total productivity in terms of pigeonpea-equivalent yield increased with increasing rates of P up to 80 kg P2O5/ha.

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