Field evaluation of Spirotetramat 150 G/l Od (Movento) for Control of Rugose Spiralling Whitefly (Aleurodicus rugioperculatus m.) (Hemiptera: Aleyrodidae) in Oil Palm
BADARI PRASAD P R *
Department of Agricultural Entomology, College of Agriculture, Gangavathi, Koppal, Karnataka- 583 227, India.
GANGAPPA NAYAK
Department of Agricultural Entomology, College of Agriculture, Gangavathi, Koppal, Karnataka- 583 227, India.
MANJULA
Department of Agricultural Entomology, College of Agriculture, Gangavathi, Koppal, Karnataka- 583 227, India.
*Author to whom correspondence should be addressed.
Abstract
The study assessed the bioefficacy and phytotoxicity of Spirotetramat 150 g/L OD (Movento) for controlling Rugose Spiralling Whitefly (RSW), Aleurodicus rugioperculatus, in oil palm (Elaeis guineensis Jacq.) plantations during the Kharif seasons of 2022 and 2023. Using a randomized block design (RBD), six treatments were tested for bioefficacy and three for phytotoxicity. Results indicated that Spirotetramat 150 g/L OD, applied at 15 and 11.25 g a.i./ha, significantly reduced RSW nymph populations, achieving an 81.99% to 93.30% reduction over control plots. These treatments also enhanced oil palm yield, increasing production by 52.86% to 70.41% compared to untreated controls. Importantly, Spirotetramat demonstrated no adverse effects on natural enemies like Encarsia spp., and no phytotoxicity symptoms were observed. The study concludes that Spirotetramat 150 g/L OD, particularly at 15 g a.i./ha, is highly effective for managing RSW in oil palm, with minimal environmental impact, making it a suitable component of integrated pest management strategies.
Keywords: Bioefficacy, oil palm, phytotoxicity, rugose Spiralling whitefly, spirotetramat