Gene

Instar

Lepidoptera genitalia

Beauveria bassiana

Biology

Noctuidae

PEST analysis

Bassiana

Biochemistry

Botany

Fall armyworm

Larva

Veterinary medicine

Metarhizium anisopliae

Spore

Infestation

Horticulture

Biological pest control

Medicine

Recombinant DNA

Spodoptera

Egyptian Journal of Biological Pest Control

Ten indigenous entomofungal strains of Beauveria bassiana , Metarhizium anisopliae , and M. rileyi were evaluated against 2nd instar larvae of the maize fall armyworm (FAW) Spodptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in a laboratory bioassay. Among the ten strains tested, M. anisopliae ICAR-NBAIR Ma-35 caused 67.8% mortality, followed by B. bassiana ICAR-NBAIR Bb-45 with 64.3%, and ICAR-NBAIR Bb-11 with 57.1% mortality. Rest of the isolates showed 10.7–28.6% mortality. ICAR-NBAIR Ma-35 showed LC 50 of 1.1 × 10 7 spores/ml and LT 50 at 1 × 10 8 spores/ml is 86.04 h and ICAR-NBAIR Bb-45 showed LC 50 of 1.9 × 10 7 spores/ml and LT 50 at 1 × 10 8 spores/ml is 88.30 h. Field evaluation with these two promising strains were conducted against maize fall armyworm for 2 years (2018 and 2019) at ICAR-National Bureau of Agricultural Insect Resources experimental farm, Bengaluru, Karnataka, India. Field trial results indicated 68 and 69% reduction of FAW infestation and 55 and 62% increase in yield in the plots treated with M. anisopliae ICAR-NBAIR Ma-35/ B. bassiana ICAR-NBAIR Bb-45, respectively, during 2018. In 2019, 70 and 76% reduction of FAW infestation and 44 and 55% increase in yield were observed in the plots treated with these two entomofungal pathogens, respectively.

Effect of entomopathogenic fungi against invasive pest Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in maize