The nepal ridger
The Nepal Ridger is a tool designed to improve production conditions for crops grown in rotation with flooded rice. It can be built of simple materials and can be adapted to human, animal or tractor power. In most traditional areas of flooded rice, other crops are grown in annual rotation. Years of continuous rice culture create unfavorable soil conditions and problems of water management for other crops that follow. Tillage practices for flooded rice destroy the normal structure of the surface soil-purposefully-to prevent loss of water through seepage into the soil. Increased soil density and other harmful changes occur in soil structure. Excessive water application with no provision for drainage causes prolonged periods of saturation with insufficient soil aeration to supply the needs of roots of most crops. Under this anaerobic condition, nitrogen is lost from the soil through denitrification. In addition to poor conditions during the crop growing season, it is often difficult to produce the soil and moisture conditions needed at seeding time to insure a good stand. In many areas, water saturation of the soil after seeding prevents emergence. The Nepal Ridger offers a way to overcome these problems.
| Main Authors: | , |
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| Format: | Handbook biblioteca |
| Language: | English |
| Published: |
CIMMYT
1981
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| Subjects: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, FERTILIZATION, FLOODED RICE, IRRIGATION, PLOUGHS, WEEDING, TILLAGE, |
| Online Access: | http://hdl.handle.net/10883/3611 |
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