Development Durations, Colonization and Insecticide Efficacy of Leaf Mite, Oligonychus oryzae Hirst on Rice
By: V Radhakrishnan and K Ramaraju
Open Access
|Dec 2010Abstract
Oligonychus oryzae is an economic mite pest infesting rice crops in India and other Asian countries. This study examined the duration of development instars at 20 °C – 35 °C , level of colonization of mites in eight commercial rice varieties viz., ADT 36, ADT 43, ADT 45, IR 50, CO 47, ASD 16, ADTRH 1 and TN 1 and assessment of efficacy of five insecticides against O. oryzae during 2005 and 2006. The duration of development from egg to adult lasted 8.33±0.20 days at 35 °C. ASD 16, ADTRH 1 and CO 47 were moderately resistant to leaf mite; ADT 45, TN 1, IR 50 and ADT 36 were moderately susceptible; ADT 43 was the most susceptible variety. Among the chemicals tested, Abamectin 1.8 EC was found to be the most effective
Tropical Agricultural Research Vol. 21(1): 30-38 (2009)
Tropical Agricultural Research Vol. 21(1): 30-38 (2009)
DOI: https://doi.org/10.4038/tar.v21i1.2584 | Journal eISSN: 2706-0233
Language: English
Page range: 30 - 38
Published on: Dec 17, 2010
Published by: Postgraduate Institute of Agriculture (PGIA)
In partnership with: Paradigm Publishing Services
Keywords:
© 2010 V Radhakrishnan, K Ramaraju, published by Postgraduate Institute of Agriculture (PGIA)
This work is licensed under the Creative Commons License.