Effect of wintry crops and their agricultural practices on infestation by pink bollworm Pectinophora gossypiella (saund.) in the next year [electronic resource].

Includes references.

The present work was carried out during three seasons (2002, 2003, and 2004) at Farm of SakhaAgricultural Research Station, Kafr EI-Sheikh Governorate to evaluate the effect of wintry crops and their agricultural practices on infestation of pink bollworm Pedinophora gossypiel/a (Saund.) in the next season. Results during the three inspection dates, and the three depths of buried cotton bolls in four crops throughout the three tested seasons of 2002, 2003, and 2004 were estimated. The mortality % of pink bollworm larvae increased when the depth of buried bolls increased, and the inspection date to be late. The highest means of mortality % were recorded in the sugar beet and faba bean crops, with slight differences between each other. The lowest averages of mortality % were recorded by the wheat and Egyptian clover crops with slight differences between them. That may be due to the agricultural practices conducted in the sugar beet and faba bean fields and neglected in the wheat and clover fields (for example, the tillage).

Summary in Arabic.

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