Citation
Karunadasa P., . and Samarappuli L., . and Mitrasena U., . (1994) Effects of potassium and moisture stress on the performance of young Hevea Brasiliensis. [Proceedings Paper]
Abstract
In field experiments with immature Hevea brasiliensis mulching with paddy straw was found to be a better agronomic practice than growing leguminous cover crops such as Pueraria phaseoloides and Desmodium ovalifolium or allowing natural vegetation to grow in the inter-row areas.Girthing had been much higher with mulching which resulted in the reduction of the immature unproductive period by approximately 18 and 12 months in comparison with naturals and creeping legumes respectively.In addition to early tapping yield of latex was also higher during the early stages increases in the region of 33 and 40 in comparison with creeping legunes and naturals respectively.Mulching improved the water storage capacity of the soils and the potassium status of the soils and plants.Under moisture stress situations increasing the level of K application improved the performance of young rubber plants.Root growth was increased by higher levels of moisture as well as potassium.Plantphysiological measurements made indicate a better plant water status in K sufficient rubber plants.The compensating influenceof high levels of added potassium in overcoming moisture stress effects are evident.
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Abstract
In field experiments with immature Hevea brasiliensis mulching with paddy straw was found to be a better agronomic practice than growing leguminous cover crops such as Pueraria phaseoloides and Desmodium ovalifolium or allowing natural vegetation to grow in the inter-row areas.Girthing had been much higher with mulching which resulted in the reduction of the immature unproductive period by approximately 18 and 12 months in comparison with naturals and creeping legumes respectively.In addition to early tapping yield of latex was also higher during the early stages increases in the region of 33 and 40 in comparison with creeping legunes and naturals respectively.Mulching improved the water storage capacity of the soils and the potassium status of the soils and plants.Under moisture stress situations increasing the level of K application improved the performance of young rubber plants.Root growth was increased by higher levels of moisture as well as potassium.Plantphysiological measurements made indicate a better plant water status in K sufficient rubber plants.The compensating influenceof high levels of added potassium in overcoming moisture stress effects are evident.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | 7 ill. 9 tables 10 refs. |
| AGROVOC Term: | POTASSIUM |
| AGROVOC Term: | HEVEA BRASILIENSIS |
| AGROVOC Term: | MULCHING |
| AGROVOC Term: | SOIL FERTILITY |
| AGROVOC Term: | SRI LANKA |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:27 |
| URI: | http://webagris.upm.edu.my/id/eprint/16478 |
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