The in-vitro study on the biology of two spotted spider mite Tetranychus urticae Koch. on some of the preferred host plants viz., okra, egg plant, french bean, pumpkin, tomato, tapioca and mulberry revealed that the egg, larval, protonymphal and duetonymphal stages, adult longevity, pre-oviposition period and post-oviposition period were the shortest on okra followed by egg plant, french bean, tomato, tapioca, pumpkin and mulberry. The oviposition period, sex ratio and the fecundity were more and prolonged on okra followed by egg plant, french bean, tomato, tapioca, pumpkin and mulberry. T. urticae showed relatively better performance on okra, which might be attributed to increased level of total chlorophyll, total sugars, protein and lesser wax content, phenol and silica compared to rest of the host plants.
For MASU related issues :
PUBLISHER
SECRETARY
Madras
Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
For MAJ related issues :
EDITOR-IN-CHIEF
Madras Agricultural Journal (MAJ)
Madras
Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
Copyright © Madras Agricultural Journal | Masu Journal All rights reserved.
Please provide the registered email ID
Please enter the new password
