Insecticidal activity of diverse chemicals for managing the destructive alien pest fall armyworm Spodoptera frugiperda (J.E. Smith) on Maize crop in India
2022
Srujana, Yeddula | Kamakshi, Nandimandalam | Krishna, Tirupati Murali
In an endeavor to ascertain the efficacy of insecticides with a varied mode of action to combat the invasive alien pest fall armyworm Spodoptera frugiperda in Maize an experiment was conducted at Regional Agricultural Research Station, Nandyal, Acharya N G Ranga Agricultural University, Andhra Pradesh, India for a period of three years (2019/20/21) in rabi season. The present findings revealed that poison bait with Thiodicarb 75 SP (50 kg rice bran + 5 kg Jaggery + 500 g Thiodicarb 75 SP @ 50 kg/ha) was effective in the management of fall armyworm. Least cob damage of 8.5 percent and higher yield of 7344 kg/ha was observed in the “poison bait” treatment. Spinosad 45SC@ 175 ml/ha and Spinetoram 11.7SC @ 250 ml/ha treatments showed on par resuilts with poison bait treatment. In the case of Spinosad 45SC@ 175 ml/ha, 11.57 percent of cob damage and 6852 kg/ha yield was recorded, whereas Spinetoram 11.7SC@250 ml/ha treated plots showed 14.3 percent of cob damage with 6813 kg/ha yield. Our field experiment concluded that poison bait followed by Spinosad 45SC and Spinetoram 11.7SC were effective in management of fall armyworm in Maize.
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