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Entomophaga

, Volume 27, Supplement 1, pp 89–98 | Cite as

Attempts at forecasting rice planthopper populations in Malaysia

  • P. A. C. Ooi
Article

Abstract

The two rice planthoppers that have caused devastating damage to rice crops in Peninsular Malaysia areNilaparvata lugens andSogatella furcifera. A surveillance system has been set up to monitor these pests. A case study in the off-season crop of 1980 in the Tanjung Karang Irrigation Scheme showed that hopperburn could be predicted a month before it happened. In the following main season, both surveillance records and ecological factors suggested that the pest would be under natural control and the forecast was accurate. The main factors considered in forecasting rice planthoppers were: migration, brachyptery, pest population, predatory: prey ratio, history of outbreaks and prevailing field conditions.

Keywords

Plant Pathology Field Condition Surveillance System Ecological Factor Rice Crop 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Balthazar Publications 1982

Authors and Affiliations

  • P. A. C. Ooi
    • 1
  1. 1.Jalan GallagherCrop Protection Branch, Department of AgricultureKuala LumpurMalaysia

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