Ecology, Environment and Conservation Paper

Vol 22, Issue 4, 2016; Page No.(1983-1986)

POPULATION DYNAMICS AND INFLUENCE OF WEATHER FACTORS ON STEM BORER, CHILO PARTELLUS (SWINHOE) INFESTING MAIZE

M. U. Dindor, T. M. Bharpoda., B. H. Patel., R. I. Chaudhary and R. J. Patel

Abstract

Investigations were carried out at B. A. College of Agriculture, AAU, Anand during 2014 on population dynamics of stem borer, Chilo partellus (Swinhoe) infesting maize under field condition. The incidence of the pest appeared on the crop during 29th Standard Meteorological Week (SMW) (7.5 % damaged plants). The activity of pest gradually increased and reached to peak (40 % damaged plants) during 36th SMW. Leaf injury caused by the pest was first noted on the plants during 29th SMW (1.22 scale) and continued till 39th SMW. Leaf injury gradually increased and reached to peak (3.42 scale) during 35th SMW. There was highly significant negative association between leaf injuries. Minimum temperature and wind velocity exerted negative impact on the infestation of stem borer i.e., damaged plants and leaf injury scale.

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