Efficacy of plant based formulation against yellow mite of chilli (Polyphagotarsonemus latus Banks)

• Published in: International journal of tropical insect science 2023-04, Vol.43 (2), p.645-654
• Main Author: Ghosh, Sunil Kumar
• Format: Article
• Language: English
• Subjects: Abamectin; Acaricides; ambient temperature; Aquatic plants; Biomedical and Life Sciences; Capsicum; Capsicum annuum; Eichhornia crassipes; Entomology; Floating plants; Foaming; Freezing; Fungicides; Insecticides; Insects; Life Sciences; Microorganisms; Mites; Original Research Article; Pests; Polyphagotarsonemus latus; Room temperature; spices; Spilanthes; Spilanthes paniculata; toxicity; Toxins; Vegetables; Water hyacinths; Wettability
• ISSN: 1742-7592; 1742-7584; 1742-7592
• DOI: 10.1007/s42690-023-00967-y

Chilli ( Capsicum annuam L.), is used as an important spice as well as vegetable throughout the globe. The crop is susceptible to large number of insect and mite pests of which yellow mite, Polyphagotarsonemus latus ( Banks), (Tarsonemidae: Acarina) causes damage the tender leaves of the plant and reduces marketable produce. Two plant based formulations, Spilanthes paniculata -floral parts and water hyacinth, Eichornia crassipes Mart. whole plant, and one microbial toxin- abamectin were used for its environmentally sound management and compared with chemical acaricide, fenazaquin. abamectin (Vertimec 1.9 EC) @ 1.0 ml/L of water was found most effective against chilli yellow mite recording 83.38% control, followed by fenazaquin (Magister 10 EC) @ 2 ml/ L of water, Spilanthes paniculata (50% WP) 12 g/ L of water and Eichhornia crassipes (50% WP) @ 12 g/ L of water providing 77.98%, 54.15% and 48.66% control respectively. Abamectin, a chemical macrocyclic latones; Spilanthes paniculata and water hyacinth are bio-acaricides; and may be used as alternative of chemical acaricides. The quality parameters of WP (50%) formulation was satisfactory as per the FAO specifications in terms of wet sieved test, wettability, foaming and suspensibility performed on the 0-day and also after 15th day at room temperature (25°-35 °C), at 65° C and at freezing temperature conditions. Fenazaquin is toxic a synthetic chemical acaricide, so there is many possibilities to contaminate vegetables. Obtained results showed that abamectin, Spilanthes paniculata and water hyacinth were effective against chilli mite and may be incorporated in IPM programme.