INFLUENCE OF VARIETIES, SPACINGS AND PEST MANAGEMENT ON THE INCIDENCE OF THREE MAJOR PESTS OF RICE
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Author:V.K.R. SATHIYANANDAN, G. LOGISWARAN and P.C. SUNDARABABU
p-ISSN:0024-9602, e-ISSN:2582-5321, Vol:78, Issue:jan-apr
DOI: https://doi.org/10.29321/MAJ.10.A01813
Abstract
In a study on the influence of varieties, spacings and pest management, spraying with monocrotophos 36 WSC at 500 ml/ha. recorded significantly lower infestation of pests and an increase of 10% grain yield. insect resistant cultures IET 6315 and ACM 8 recorded significantly lower incidence of gall midge and stem borer as compared to IR 20. Spacings had no influence on the incidence of the pests and yield. IR 20 at a spacing of 20 x 15 cm, sprayed at ETL recoided the lowest incidence of leaf folder. IET 6315 and ACM 8 recorded significantly lower damage in 20 x 15 cm spacing. The results suggest that gall midge incidence in the moderately resistant varieties can be reduced by adopting a wider spacing and on susceptible varieties with insecticides.
Key words : Rice, Pest management.