Effect of plant water deficits at various growth stages on growth, grain yield and leaf water potential of irrigated grain sorghum

Inuyama, S. and Musick, J.T. and Dusek, D.A. (1976) Effect of plant water deficits at various growth stages on growth, grain yield and leaf water potential of irrigated grain sorghum. Proceedings of the Crop Science Society of Japan, 45 (2). pp. 298-307.

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Abstract

In pot trials at Bushland, Texas, USA, leaf water potential in grain sorghum subjected to water deficit decreased as severity of drought stress increased and fell to -22 to -30 bar compared with lowest values of -19 bar with adequate water supply. Water deficit decreased growth, and deficit during booting decreased grain yields to a greater extent than deficit during vegetative growth. Deficit treatments which decreased the number of grains/ear did not decrease 1000-grain weight. With adequate water evapotranspiration was highest during the boot stage. It was concluded that the critical period for drought stress in grain sorghum was from the boot stage until flowering

Item Type: Article
Author Affiliation: Chugoku National Agricultural Experiment Station, Fukuyama, Hiroshima, Japan
Subjects: Plant Protection
Soil Science and Microbiology > Soil Sciences
Divisions: Sorghum
Depositing User: Ms K Syamalamba
Date Deposited: 30 Aug 2012 05:52
Last Modified: 30 Aug 2012 05:53
URI: http://eprints.icrisat.ac.in/id/eprint/7606

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