Anais da Sociedade Entomológica do Brasil (1997) 26, 517-525

Francisco J. Cividanes and Jairo G. Figueiredo (1997)
Previsão de Ocorrência de Picos Populacionais de Percevejos Pragas da Soja em Condições de Campo
[Predicting populational peaks of soybean stink bugs under field conditions]
Anais da Sociedade Entomológica do Brasil 26 (3), 517-525
Abstract: The study was carried out to predict, in the field, the occurrence of populational peaks of adults of Piezodorus guildinii (West.), Nezara viridula (L.) and Euschistus heros (Fabr.) (Heteroptera: Pentatomidae), using a degree-day model. Considering the development of the biological cycle, it was observed that more than 70% of adult emergence of P. guildinii, N. viridula and E. heros occurred when means of 307.7, 753.8 and 370.3 degree-day respectively had been accumulated. The differences between predicted and observed dates for emergence were 0-3 days for P. guildinii and N. viridula and 5-6 days for E. heros.
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(original language: Portuguese)
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Research topic(s) for pests/diseases/weeds:
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Nezara viridula
	Euschistus heros
	Piezodorus guildinii