NATURAL CONTROL OF SOME RICE PESTS IN IR-22 AND CICA-6 VARIETIES
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The larval stage of Spodoptera frugiperda (J. E. Smith) on two rice varieties, was regulated by six parasitoids and two pathogens; the action of these natural enemies was higher on the rice variety I R-22 than on CICA-6; larvae of Panoquina were attacked by four parasitoids and two pathogens. Euplectrus plathypenae Howard was the most effective larval parasitoid for both pests on the two rice varieties. Eggs parasitism by Telenomus sp. was more abundant in Panoquina sp. Rupela albinella (Cramer) and Mormidea ypsilon L. the egg masses of Diatraea saccharalis (F.) were parasitized only by Trichogramma sp. The parasitism of Sogatodes orizicolus (Muir) and S. cubanus (Crawford) by Elenchus sp. was higher on I R-22 (19,8%) than on CICA-6 (4,06°/o).
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