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Vegetos

Journal: Vegetos- An International Journal of Plant Research

Article DOI :10.5958/j.2229-4473.26.2.104
Year :2013, Volume : 26, Issue :2
First page : (396) Last page : (402)
Print ISSN : 0970-4078. Online ISSN : 2229-4473.


RESEARCH ARTICLE
A SOCIETY FOR PLANT RESEARCH PUBLICATION

Bio-Efficacy of New Acaricide Molecule, Etoxazole 10% Sc (W/W) Against Red Spider Mite, Tetranychus urticae Koch in Brinjal

Karmakar K.*, Patra Sandip1

All India Network Project on Agricultural Acarology, Directorate of Research, Bidhan Chandra Krishi Viswavidyalaya, Kalyani-741235, Nadia, W B, India
1Division of Crop Improvement, ICAR Research Complex for NEH Region, Umiam-793 103, Meghalaya, India

*Corresponding author Email: acarikarmakar@rediffmail.com

The experiments were conducted to determine the bio-efficacy of new acaricide molecule, etoxazole 10% SC (w/w) against red spider mite, Tetranychus urticae Koch in brinjal. Two field trials were conducted at District Seed Farm, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, West Bengal during pre-kharif and kharif seasons of 2010–2011. Brinjal (Variety: Tarini) seedlings were transplanted in the plot size of 5m X 4m area with spacing of 100cm X 80cm during both the seasons. Five doses each of etoxazole 10% SC (w/w) (10, 25, 40, 55 and 80 g a.i./ha) along with single dose of fenpropathrin 30% EC (100 g a.i./ha), hexithiazox 5.45% EC (25 g a.i./ha) and propergite 57% EC (570 g a.i./ha) were sprayed thrice during the entire cropping season. Observation were taken before spraying as pre-treatment count on mean mite population/cm2 leaf area and thereafter mite population was counted 1, 3, 7 and 15 days after each spraying. Etoxazole 10%SC (w/w) @ 40 g a.i./ha, etoxazole 10%SC (w/w) @ 55 g a.i./ha and etoxazole 10%SC (w/w) @ 80 g.a.i./ha were at par with each other and were very effective especially in controlling eggs and immature stages of red spider mites in brinjal and recorded higher yield than rest of the treatments. No phytotoxic effect was observed even at the highest doses of etoxazole 10%SC (w/w) @ 80 g.a.i./ha. No adverse effect was noticed for application of different doses of etoxazole on the dominant predatory mite species, Paraphytoseius multidentatus whereas, high mortality was recorded from propergite and fenpropathrin treated plots.




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