The simultaneous triangular relationship between certain weather factors temperature, humidity, number of captured pink bollworm male moths and infestation in green bolls [electronic resource].

Includes references.

A field trial was carried out to study the combined effect of day maximum temperature, relative humidity on the corresponding number of captured Pectinophora gossypiella (Saunders) male moths as indicated by sex trap and the infestation in green cotton bolls in field. This study was conducted at Assiut and Gharbia Governorates throughout 2000 cotton growing season. The number of captured male moths was recorded each three days during the season. The relationship between day maximum temperature and the corresponding number of male moths captured in the traps was estimated during spring revealed that number of moths increased gradually, thus forming a peak when day maximum temperature ranged between 36°C on 5th May at Assiut and 33°C on 20th May at Gharbia. The correlation value yielded a significant and positive "r" value between day maximum temperature and number of trapped moths in trap and insignificant positive correlation between mini- mum temperature, minimum relative humidity and number of captured moths during the valuable occurrence of green bolls susceptible to infestation (three weeks old).

Summary in Arabic.

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