Sorghums in the post-rainy season. I. Effect of irrigation and date of sowing on the grain and stover yields of diverse cultivars

    Reddy, B V S and Seetharama, N and House, L R (1988) Sorghums in the post-rainy season. I. Effect of irrigation and date of sowing on the grain and stover yields of diverse cultivars. Experimental Agriculture, 24 (1). pp. 31-36.

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    Abstract

    In India, sorghum is grown during the post-rainy season on Vertisols with stored soil moisture. As water stress towards the end of the growing season is believed to be a major cause of poor yields in these crops, an experiment was carried out involving five sorghum genotypes and four sowing dates with and without irrigation. Supplementary irrigation with 40 mm of water in the earliest sown crop increased grain yields by 24 and 26% in 1979 and 1982, respectively, while irrigation with a total of 120mm water in the latest sown crop increased yields by 87 and 60% compared with the corresponding dryland crops. Early sowings always resulted in better stover and grain yields irrespective of irrigation treatment. Grain yields of hybrids were similar to those of the cultivars but their stover yields were less. The post-rainy season cultivar SPY 86 gave the best grain yield across sowing dates. The widely grown post-rainy season cultivar M 35–1 yielded less but produced more stover and its yields were more stable. The importance of the stability of grain and stover yields and of evaluating the materials for more than one date of sowing in selecting sorghums for the post-rainy season is discussed.

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Subjects: Mandate crops > Sorghum
    Depositing User: Users 6 not found.
    Date Deposited: 17 Aug 2011 09:19
    Last Modified: 17 Aug 2011 10:56
    URI: http://oar.icrisat.org/id/eprint/246
    Official URL: http://dx.doi.org/10.1017/S0014479700015672
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: The authors wish to thank Mr Bruce Gilliver, Principal Biometrician, and Dr Murari Singh, Statistician, ICRISAT for helping to interpret the error estimates.
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