Plant Protection Bulletin (Taipei) (2001) 43, 17-28
C.H. Cheng (2001)
Relationships between the damage of rice stem borer, Chilo suppressalis (Walker) (Lepidoptera : Pyralidae) and the pheromone trap catches in the first cropping season
Plant Protection Bulletin (Taipei) 43 (1), 17-28
Abstract: The relationships between the damage by the rice stem borer in terms of number of dead-heart and white-head tillers of rice in the first rice cropping season and sex pheromone trap catches were analyzed basing on the data collected from 1991 to 2000 at monitoring fields in Chiayi. Results showed that the first appearance of dead heart mostly was observed during the last 10 days of March, and the maximum number appeared in April 15-24 .while the white heads were observed firstly in the mid-May during the heading to flowering stage of rice with the maximum number mostly during the dough stage of rice during the last 10 days of May. The correlation between the maximum number of dead-heart tiller and pheromone trap catches during different adult emerging period of overwinter generation was not significant. However, the number of dead-heart tillers correlated closely with the averaged temperature of February (r = -0.588, P < 0.05). On the other hand, the maximum number of white head tiller was correlated closely to both the catches of adult of the first generation in pheromone trap and the rainfall from 21 April to 20 May, and also form 1 to 15 May. Based on various important factors that affecting to the damage on rice plants, several predicting equations have bean established for forecasting the possible occurrence of dead-heart and white head of rice in the first cropping season for further check of their validity.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps
surveys/sampling/distribution
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Chilo suppressalis | Rice (Oryza) | Taiwan |
