Effects of Drainage and Organic Amendments on the Reclamation of a Sodic Soil Cropped with Rice1
- B. S. Puttaswamygowda,
- E. F. Wallihan and
- P. F. Pratt2
In a greenhouse pot culture study, effects of drainage and organic amendments on the reclamation of a saline sodic soil material under submerged conditions were studied with and without the presence of a rice crop (Oryza sativa L.). In drained soils, application of dairy manure, sugar, straw or straw + CaCl2 increased the rate of drainage and decreased the electric conductivity (EC) and exchangeable sodium percentage (ESP). Without drainage, treatments were less effective. Crop growth hastened the reclamation process by increasing the volume of water drained and the concentration of Ca + Mg in the drainage water.
Drainage had a significant effect on the vegetative growth of rice, percentage of earbearing tillers, and straw and grain yield. In the undrained condition, organic soil amendments, except dairy manure, adversely affected the straw and grain yield.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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