RESPONSE OF CHICKPEA (Cicer arietinum L.) GENOTYPES TO IRRIGATION SCHEDULES AND NAA SPRAY IN VERTISOLS OF NORTHERN KARNATAKA
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Date
2001-08-02
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE
Abstract
A field experiment was conducted at Main Research Station,
University of Agricultural Sciences, Dharwad on medium black soil to
study the "Response of chickpea genotypes to irrigation schedules and
NAA spray in Vertisols of northern Karnataka" during rabi 1999. The
experiment was laidout in split plot design with three replications. There
were 18 treatment combinations consisting of 3 irrigation schedules (0.4,
0.6 and 0.8 IW/CPE ratios) as main plots, and 2 genotypes {desi variety
Annegeri-1 and kabuli variety ICCV-2) and 3 NAA spray treatments (no
spray, 20 ppm spray and 30 ppm spray) as sub-plots.
Irrigation scheduling at 0.6 IW/CPE ratio recorded significantly
higher seed yield (7.9 and 17.6%) over 0.8 and 0.4 IW/CPE ratio,
respectively. Among the genotypes, desi variety-Annegeri-1 outyielded
kabuli variety-ICCV-2 by 27 per cent. The spray of NAA @ 20 ppm
increased the seed yield of chickpea significantly over 30 ppm spray and
no spray. This was the consequent effect of significantly improved growth
and yield parameters. Irrigation scheduling at 0.6 IW/CPE ratio, desi
variety-Annegeri-1 and 20 ppm NAA spray recorded higher water use
efficiency.
Irrigation scheduling at 0.6 IW/CPE ratio with 20 ppm NAA spray to
desi variety recorded higher net returns and B:C ratio.
Based on the results it could be concluded that scheduling of
irrigation at 0.6 IW/CPE ratio to desi variety-Annegeri-1 with 20 ppm NAA
spray was economically feasible for realising higher seed yield and net
returns in chickpea in vertisols of Northern Karnataka.
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