RESPONSE OF RAJMASH GENOTYPES TO TIME OF SOWING DURING RABI IN THE NORTHERN TRANSITIONAL ZONE OF KARNATAKA
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Date
2007-10-01
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University of Agricultural Sciences GKVK, Banglore
Abstract
A field experiment was conducted during rabi 2005-06 to study
the performance of rajmash genotypes under different time of sowing
at Main Agricultural Research Station, University of Agricultural
Sciences, Dharwad, Kamataka. Genotypes Arka Komal, Contender,
HPR-35 and Waghya (in sub-plots) were sown during first and second
fortnight of October and November (in main plots) using a split plot
design with three replications on black clay soil. Sowing during first
and second fortnight of October recorded higher seed yield (1999 and
1930 kg ha ', respectively) compared to crop sown in November. The
values of various growth (plant height, number of trifoliate leaves,
number of branches plant ', leaf area, leaf area index and total diy
matter) and yield components (number of pods plant ', number of
seeds pod ', seed weight plant ' and test weight) of rajmash were
significantly higher with October sown crop than with November sown
crop. Rajmash genotypes also differed significantly with one another
HPR-35 recorded higher seed yield (1829 kg ha ') followed by Waghya
(1774 kg ha-'), Arka Komal (1448 kg ha ') and Contender (1407 kg
ha '). Yield variations were mainly due to variation in seed weight per
plant and 100-seed weight. Protein content in seed did not differ
significantly due to time of sowing. However, among genotypes
HPR-35 recorded significantly higher protein content (22.75%) over
Waghya, Arka Komal and Contender. Some of the interaction effects
involving time of sowing and genotypes were found significant. When
sowing were delayed from October first fortnight to November second
fortnight significant reduction in seed yield of genotypes Waghya,
Contender and Arka Komal but the yield reduction was comparatively
less in HPR-35. The study revealed higher gross returns (Rs.58,000
ha '), net returns (Rs.48,270 ha ') and B:C (4.23) with October first
fortnight sowing of Waghya, closely followed by HPR-35 sown during
second fortnight of October.
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