Nitrogen Contribution by Groundnut (Arachis Hypogaea L.) in a Rotational Cropping System on an Ultisol
In Malaysia, about 120,000 ha of highly weathered Oxisols and Ultisols come off either from rubber or oil palm annually under the replanting programme. Annual crops such as groundnut and maize are often used as cover crops, which can replace non-food legume cover crops, during the first four year...
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| 主要作者: | |
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| 格式: | Thesis |
| 語言: | English English |
| 出版: |
1991
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| 主題: | |
| 在線閱讀: | http://psasir.upm.edu.my/id/eprint/10286/1/FP_1991_2_A.pdf |
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| 總結: | In Malaysia, about 120,000 ha of highly weathered Oxisols and Ultisols
come off either from rubber or oil palm annually under the replanting
programme. Annual crops such as groundnut and maize are often used as cover
crops, which can replace non-food legume cover crops, during the first four years
under the replanting programme. The acidic nature associated with high
aluminum concentration and low native nitrogen status often pose severe
constraints to the growth and productivity of annual food crops on these
Ultisols. An approach which involved the adoption of advanced legume technology
and liming was hypothesized to reduce these two soil-related constraints
affecting annual food crop production on Ultisols. |
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