Advances in Life Sciences
Year : 2016, Volume : 5, Issue : 11
First page : ( 4468) Last page : ( 4471)
Print ISSN : 2278-3849. Online ISSN : 2278-4705.

Responses of Rabi Sorghum Genotypes to Sowing Windows in Northern Transition of Karnataka

Hulihalli U.K.*, Shantveerayya U.V. Mammigatti, Gowda P. Thimme

Directorate of Research University of Agricultural Sciences, Dharwad-580 005, Karnataka, India

*email: hulihalliuk@uasd.in

Online published on 2 January, 2017.

Abstract

A field experiment was conducted during rabi season of 2012–13 in Main Agricultural Research Station, Dharwad district of Karnataka to study the response of sorghum genotypes to sowing dates in Northern transition of Karnataka. Date of sowing and genotypes had significant influence on the number of days taken to attain 50 per cent flowering and physiological maturity. Early sown (1^st week of October) sorghum took more number of days (73 days) to attain 50 per cent flowering and physiological maturity (128 days) compared to rest of the sowing dates. Planting dates had statistically significant differences for GDD accumulation, the 1^st week of October planting accumulated the maximum (950.8) though, progressively decreased to minimum (717.4) with late planting (1^st week of November). Genotype P. Revati raised on 1^st week of October recorded significantly higher dry matter production (500.4 g plant⁻¹), higher grain yield (3835 kg ha⁻¹) and straw yield (7.78 t ha⁻¹) compared to rest of the treatments.

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Keywords

Sowing dates, genotypes, GDD, dry matter, 50% flowering, grain yield.

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