Water relations, growth, and dry matter accumulation of sorghum under post-rainy season conditions

Sivakumar, M V K and Seetharama, N and Singh, Sardar and Bidinger, F R (1979) Water relations, growth, and dry matter accumulation of sorghum under post-rainy season conditions. Agronomy Journal , 71 (5). pp. 843-847. ISSN 0002-1962

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Abstract

Field studies were conducted on deep vertisols to assess the effects of water stress on the growth and DM accumulation of sorghum. Leaf water potential and stomatal conductance were measured diurnally on 4 dates during the growing season. Irrigated sorghum exhibited higher stomatal conductance, higher leaf water potentials, higher LAI and greater DM accumulation than non-irrigated sorghum. Higher transpiration rates in irrigated sorghum were explained by increased net radiation measured over the irrigated canopy. Lower leaves in the sorghum canopy showed lower stomatal conductance. Non-irrigated sorghum had fewer tertiary branches/secondary branch, fewer seeds/panicle and smaller seeds. Non-irrigated sorghum used 213 mm water to produce 0.51 kg DM/m2; irrigated sorghum extracted 321 mm water to produce 0.93 kg DM/m2

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Uncontrolled Keywords: Leaf-water potential, Stomatal conductance, Leaf area index, Water use
Subjects: Mandate crops > Sorghum
Depositing User: Ms K Syamalamba
Date Deposited: 09 Nov 2011 10:27
Last Modified: 09 Nov 2011 10:27
URI: http://oar.icrisat.org/id/eprint/3827
Official URL: https://www.agronomy.org/publications/aj/abstracts...
Projects: UNSPECIFIED
Funders: ICRISAT receives support from IBRD, IDRC, UNDP, USAID and a variety of other donors, governments, and foundations
Acknowledgement: ICRISAT receives support from IBRD, IDRC, UNDP, USAID and a variety of other donors, governments, and foundations. All responsibility for the information in this publication rests with ICRISAT
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