Journal of FARM SCIENCES, Vol 28, No 4 (2015)

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Residual effects of maize hybrids, plant population and fertility levels on performance of chickpea in maize - chickpea cropping sequence

R. Mohan Kumar, S.M. Hiremath

Abstract


A two years field study was conducted during rabi season of 2014 and 2015 at Agricultural Research Station, Mudhol to evaluate the residual effects of preceding maize hybrids, plant population and fertility levels on succeeding chickpea in maize-chickpea cropping sequence. Data on available soil nitrogen, phosphorous and potassium status after maize harvest revealed that, a clear-cut nutrient gradients were formed due to different treatments imposed to the preceding maize. Hence, varied response of chickpea was observed in the succeeding season. Among the maize hybrids, plots where maize hybrid Arjun cultivated during preceding season recorded significantly higher grain (8.50 q ha-1) and haulm  (16.19 q ha-1) yields compared to NK-6240 and Super 900-M resulted in significantly higher net returns (` 26,388/ha) and BCR (3.49). Between the plant populations of preceding maize, maize cultivated at lower plant density recorded significantly higher grain (7.90 q ha-1), haulm (15.34 q ha-1) yield, net returns (` 23,928/ha) and BCR (3.13). Among the fertility levels of preceding maize, significantly higher grain (9.34 q ha-1) yield, haulm (16.63 q ha-1) yield, net returns (` 29,757 ha-1) and BCR (3.86) was recorded when preceding maize crop was fertilized with N(300)P2O5(130)K2O(130) kg ha-1

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