Studies on irrigation at critical stages of growth in sorghum

Palaniappan, S. and Ramaswamy, R. and Panneerselvam, V. and Balasubramanian, A. (1977) Studies on irrigation at critical stages of growth in sorghum. Madras Agricultural Journal, 64 (5). pp. 281-284.

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In 1974 sorghum cv. Co H.2 was irrigated at 50% available moisture continually or at combinations of seedling, vegetative, flowering and grain formation stages. Grain and straw yield were 4.7 and 7.55 t/ha, resp. where irrigation was applied at all 4 stages compared with 4.5 and 8.0 t/ha with continuous irrigation. Omitting irrigation at the seedling or vegetative stage reduced grain yield by 32 and 41%, resp., whereas omitting irrigation at the flowering stage reduced yield by only 10%. In 1975 sorghum cv. CSH 5 and CSV 4 yielded less when irrigated at the seedling stage due to heavy rainfall and waterlogging. CSH 5 gave higher grain and straw yields than CSV 4 under most treatments. In both cv., application of 90 kg N/ha gave higher yields under moisture stress than applications of 45 or 135 kg N/ha. Response to 135 kg N/ha occurred only under continuous irrigation

Item Type: Article
Author Affiliation: Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore 641 003, Tamil Nadu, India
Subjects: Plant Production
Crop Improvement > Genetics/Genomics
Crop Improvement > Plant Breeding
Divisions: Sorghum
Depositing User: Ms K Syamalamba
Date Deposited: 29 Jan 2013 05:29
Last Modified: 29 Jan 2013 05:29

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