Thrips affected by steam distillates of resistant varieties and wild rices
1994
Velusamy, R. | Kumar, M.G. | Edward, Y.S.J.T. | Thayumanavan, B. | Sadasivam, S. (Tamil Nadu Agricultural Univ., Coimbatore 641003 (India). Agricultural Entomology Dept.)
Extracts of steam distillates of varieties Ptb21, Rathu Heenati, and Swarnalata and wild rices Oryza officinalis (Acc. 101114) and O. latifolia (Acc. 100963) were bio-assayed against greenhouse-reared Stenchaetothrips biformis (Bagnall). All the extracts adversely affected the ovipositional behavior of S. biformis. The wild rice extracts were more effective than those of the resistant varieties. All the extracts were toxic to some degree to 1st-instar thrips. The wild rice extracts were most toxic
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