Citation
Ooi P. A . C ., . (1986) Insecticides disrupt natural control of Nilaparvata lugens in Sekinchan Malaysia. [Proceedings Paper]
Abstract
Results from the ecological field showed that the population of Nilaparvata lugens Stal. was kept at levels which did not cause any hopperburn. The farmer's field which was treated three times had a higher population of the pest and yellowing of rice plants was observed. The results showed that the farmer's field had a lower level of natural enemies notably the mirid bug Cyrtorhinus lividipennis Reuter and its population appeared adversely affected by the insecticides used Incidence of other rice pests was low in both situations. The study showed that natural control of N. lugens was important. The management of the pest should seek to maximise this natural control through constant monitoring of both pest and predator populations and apply insecticides only when the economics threshold level was exceeded and the prey predator ratio exceeds 50:1.
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Abstract
Results from the ecological field showed that the population of Nilaparvata lugens Stal. was kept at levels which did not cause any hopperburn. The farmer's field which was treated three times had a higher population of the pest and yellowing of rice plants was observed. The results showed that the farmer's field had a lower level of natural enemies notably the mirid bug Cyrtorhinus lividipennis Reuter and its population appeared adversely affected by the insecticides used Incidence of other rice pests was low in both situations. The study showed that natural control of N. lugens was important. The management of the pest should seek to maximise this natural control through constant monitoring of both pest and predator populations and apply insecticides only when the economics threshold level was exceeded and the prey predator ratio exceeds 50:1.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | 19 ref. Summary En |
| AGROVOC Term: | NILAPARVATA |
| AGROVOC Term: | INSECTICIDAS |
| AGROVOC Term: | CONTROL BIOLOGICO |
| AGROVOC Term: | MALASIA/ DEPREDADORES |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:25 |
| URI: | http://webagris.upm.edu.my/id/eprint/14125 |
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