Response of Mustard Genotypes to Graded Levels of Potassium and Sulphur
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Date
2016-08
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University of Agricultural Science, Dharwad
Abstract
A field experiment was conducted to study the effect of potassium (K) and sulphur (S) levels on mustard genotypes during rabi 2015-16 at Main Agricultural Research Station, Dharwad. The experiment was laid out in Split plot design involving two genotypes (NRCHB 101 and Local variety) as main plot and nine fertilizer levels as sub plot (0:0 kg K:S ha-1, 0:15 kg K:S ha-1, 0:30 kg K:S ha-1, 20:0 kg K:S ha-1, 20:15 kg K:S ha-1, 20:30 kg K:S ha-1, 40:0 kg K:S ha-1, 40:15 kg K:S ha-1, 40:30 kg K:S ha-1) with three replications.
The mustard genotype NRCHB 101 recorded numerically higher seed yield (1,454 kg ha-1) and straw yield (4,559 kg ha-1) as compared to the local genotype (1,395 kg ha-1 and 4,393 kg ha-1 respectively). NRCHB 101 recorded higher growth and yield parameters viz., number of primary branches per plant (6.14), number of siliqua per plant (184.58), seed weight per plant (11.82 g) and thousand seed weight (4.51 g). Combined application of potassium and sulphur (40:30 kg K:S ha-1) recorded significantly higher seed yield (1,647 kg ha-1), stalk yield (4,797 kg ha-1) and oil content (36.32 %) compared to control (1,220 kg ha-1, 4,132 kg ha-1 and 34.24 % respectively) and similar trend was followed for growth and yield parameters. Available potassium and sulphur in soil after harvest was higher with 40:15 kg K:S ha-1 and 40:30 kg K:S ha-1 respectively.
Higher net return (` 54,785 ha-1) and B:C (3.13) was recorded with combined application of 40:15 kg K:S ha-1. The genotype NRCHB 101 performed well with the application of 40:30 kg K:S ha-1 which recorded higher yield (1,670 kg ha-1).