Wahab, A. and Talleyrand, H. and Lugo-Lopez, M.A. (1976) Rooting depth, growth and yield of sorghum as affected by soil water availability in an Ultisol and an Oxisol. Journal of Agriculture of the University of Puerto Rico, 60 (3). pp. 329-335.
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Abstract
Grain and stover yields of RS 671 grain sorghum were measured at Barranquitas in an Oxisol and at Corozal in an Ultisol. Measurements were made of weather factors, soil moisture content and tension, plant growth, water deficits and rooting depths. At each site a plot was irrigated as often as necessary to maintain a soil water tension of less than 1 bar. Nonirrigated plots at Corozal were watered whenever necessary to prevent plants from wilting permanently. During a prolonged drought and at grain filling, sorghum extracted water in the Oxisol to a depth of 120 cm. Plants became water stressed after the soil water tension at a depth of 90 cm reached 15 bars. In the Ultisol, plants were unable to effectively extract available soil moisture below 45 cm. Both plant growth and grain yield were greater in the Oxisol than in the Ultisol. The compaction of the Ultisol was greater than that of the Oxisol
| Item Type: | Article |
|---|---|
| Author Affiliation: | Agricultural Experiment Station, Mayaguez Campus, University of Puerto Rico, Rio Piedras |
| Subjects: | Plant Production > Production Practices |
| Divisions: | Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 17 Jul 2012 10:48 |
| Last Modified: | 17 Jul 2012 10:49 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/6828 |
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