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PJB-2007-110

PATHOGENICITY OF METARHIZIUM ANISOPLIAE VAR. ACRIDUM STRAINS ON PINK HIBISCUS MEALY BUG (MACONELLICOCCUS HIRSUTUS) AFFECTING COTTON CROP

AZIZ AHMED UJJAN AND SALEEM SHAHZAD

Abstract

Metarhizium anisopliae var. acridum (Metschnikoff) Sorokin strains Ma1912, Ma1729 and Ma3605 were found to be pathogenic to the pink hibiscus mealy bug, Maconellicoccus hirsutus Green (Homoptera: Pseudococcidae) affecting cotton crop. Effects of these strains on survival of adults, instars and egg hatching were assessed. The strains were able to infect adults within 2 days after inoculation and showed 90% mortality by 8th day, whereas

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