EFFECT OF GENOTYPES, SOWING TIME OF COTTON AND SOYBEAN INTERCROPPING IN CHILLI AND COTTON NOXED CROPPING SYSTEM
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Date
2000
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University of Agricultural Science, Dharwad
Abstract
"A field experiment was conducted to study the effect of genotypes,
sowing time of cotton and interecropping of Soybean in Chilli+Cotton mixed
cropping system during 1996 and 1997 at Main Research Station, University
of Agricultural Sciences, Dharwad. The experiment comprised of two cotton
genotypes, two sowing time of cotton, four cropping systems and six sole
crops. In all there were 22 treatments including sole crops. The experiment
was laid out in a Factorial RBD design with three replications.
Across cotton sowing time and cropping systems, hirsutum genotype
Abhadita recorded 7.4 per cent higher kapas yield over herhaceum genotype
Jayadhar. Regardless of cotton genotypes and cropping systems, cotton sown
early during July second fortnight recorded 32.2 per cent higher kapas yield
over cotton sown late during August second fortnight.
Irrespective of row proportions, intercropping of Soybean in
Chilli+Cotton mixed cropping system resulted in a significant reduction of
both Chilli and Cotton yield. The reduction in Chilli yield was 6.8, 44.5 and
10.7 per cent whereas, reduction in kapas yield was 8.3, 34.7 and 10.5 per
cent with 1:1, 1:2 and 2:2 row proportions respectively. However reduction
in chilli and cotton yield in intercropping system was better compensated by
intercrop yield of soybean as seen in equivalent yield and monetary returns.
Intercropping one row of soybean with chilli and early sown
Abhadita cotton (G2T1C1) recorded significantly higher chilli equivalent yield
(1508 kg ha-1) over chilli mixed with early planted Abhadita (1168 kg ha-1)
or Jayadhar (1051 kg ha-1) cotton alone. Similarly, G2T]C] gave higher net
returns (Rs. 33812 ha-1) compared to chilli mixed with early planted Abhadita
(Rs. 24937 ha-1) or Jaydahar (Rs. 22306 ha-1) cotton. Among sole crops, chilli
recorded significantly higher net returns (Rs. 19144 ha-1) compared to
soybean (Rs. 17449 ha-1) and early sown Abhadita cotton (Rs. 11870 ha-1)."
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