Water Balance and Profile Moisture Loss Patterns of an Alfisol

Singh, P and Russell, M B (1979) Water Balance and Profile Moisture Loss Patterns of an Alfisol. Agronomy Journal , 71 (6). pp. 963-966. ISSN 0002-1962

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In order to match the water availability with the crop water requirement in the semi-arid tropical (SAT) areas of the world, the distribution and magnitude of various water balance components and the moisture dynamics in the soil profile during crop growth periods need to be understood. Since Alfisols (fine, clayey mixed udic Rhodustalf) constitute the major soil group of SAT areas, its water balance and water loss pattern in sorghum (S. bicolor L. Moench) was studied during both the monsoon and post-monsoon season of 1977 to 1978. During the monsoon season, water losses as evaporation, transpiration, and drainage constituted 21, 35, and 29%, respectively, of the total seasonal available water (Rainfall + irrigation + profile available water to 127 cm depth). In the post-monsoon season, the only unproductive loss of water was soil evaporation which formed about one-fourth of the total seasonal available water. The major amount of moisture depletion during the postmonsoon season was confined to the top 90 cm profile depth. The data obtained on water balance and the ability of Alfisols to supply water to crops suggest the need for better water management by adopting improved cultural practices, like water harvesting, and improved cropping patterns for optimizing water availability and its use for crop production in the SAT

Item Type: Article
Uncontrolled Keywords: Estimated evaporation, Transpiration, Drainage, Rainfall efficiency
Subjects: Others > Soil Science
Depositing User: Ms K Syamalamba
Date Deposited: 05 Jan 2012 08:58
Last Modified: 05 Jan 2012 08:58
URI: http://oar.icrisat.org/id/eprint/5297
Official URL: http://dx.doi.org/10.2134/agronj1979.0002196200710...
Acknowledgement: UNSPECIFIED
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