A field experiment was conducted during kharif season 2013 to estimate the correlations and path coefficients for ten quantitative characters among 72 cowpea germplasm. Seed yield per plant had positive significant correlation with days to 50% flowering, plant height, primary branches per plant, pods per plant, pod length, seeds per pod and 100-seed weight at both genotypic and phenotypic levels. Path coefficient analysis revealed that primary branches per plant and 100-seed weight had high direct positive effect on seed yield per plant at both genotypic and phenotypic levels. Pod length, days to maturity, 100 seed weight and pod wall proportion had high positive direct effects on seed yield per plant at only genotypic level. Correlation and path analysis indicated that for increasing seed yield in cowpea direct selection should be carried out for higher values of primary branches per plant, pods length, days to maturity and 100 seed weight.

: An experiment was conducted to find out suitable intercrop with chickpea under rainfed condition for maximizing the productivity of intercropping system at Agricultural Research Station, Borwat Farm, Banswara during Rabi 2008-09 and 2009-10. Significantly higher chickpea equivalent yield (2523 kg ha -1 ), water use efficiency (420.42 kg ha/cm), net return (Rs.58698/-ha -1 ) and B:C (3.46) were recorded under chickpea + mustard (4:2) rows cropping system over sole chickpea, sole barley, sole durum wheat, sole mustard, chickpea + barley (3:1) rows, chickpea + barley (3:2) rows, chickpea + durum wheat (3:1) rows and chickpea + durum wheat (3:1) rows, respectively. However, it was found at par with chickpea + mustard (4:1) rows cropping system chickpea equivalent yield (2430 kg ha -1 ), water use efficiency (405.0 kg ha/cm), net return (Rs.55675/-ha -1 ) and B:C (3.23) in the pooled analysis.

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An experiment was conducted during two consecutive years of kharif 2012 and 2013 at Agricultural Research Station, Banswara to find out the suitable drip irrigation regimes and optimum nitrogen dose for Bt cotton. The experiment was laid-out in split plot design with four replications having twelve treatment combinations. Results revealed that, the application of irrigation at 0.6 ET gave significantly higher seed cotton yield (1989 kg/ha) as compared to irrigation regime of 1.0 ET and surface irrigation (control),but it was found at par with application of irrigation at 0.8 ET (1905 kg/ha). Increasing the seed cotton yield of Bt cotton with increasing of nitrogen levels from 50% RDN & K to 100% RDN & K. The maximum seed cotton yield (2068 kg/ha) was recorded under application of 100% RDN & K over application of 75% and 50% RDN & K (1673and 1448kg/ha), respectively in the pooled analysis. Application of irrigation regime 0.6 ET and 0.8 ET were recorded higher net return (Rs.48598/-and 46458/-ha -1 ) and B: C ratio (2.31 and 2.30) over irrigation regime 1.0 ET and surface method (control). Significantly higher net return (Rs. 50380/-ha -1 ) and B: C ratio (2.29) was recorded under application of 100% RDN&K over 75% and 50% RDN&K net return (Rs. 37538/-and 30680/-ha -1 ) and B: C ratio (1.79 and 1.53), respectively in the pooled analysis. K e y w o r d sDrip irrigation, Bt cotton, nitrogen and seed cotton yield