DIRECT AND INDIRECT EFFECT OF ABIOTIC FACTORS ON POPULATION FLUCTUATION OF H. armigera IN CHICKPEA
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 57
Abstract
Direct and indirect effect of various abiotic factors on population build-up of H. armigera indicated that maximum temperature exerted very high negative direct effect (-1.1428) while morning relative humidity registered positive and high direct effect (0.4842). Negative high indirect effect was noticed of minimum temperature (-0.8909), morning (-0.4419) and evening relative humidity (-0.3891) through maximum temperature. While remaining weather parameters showed moderate to low positive indirect effect except evening relative humidity on population build-up of H. armigera during 2011-12. Minimum temperature (-0.5537), morning relative humidity (-0.9521) and wind speed (-0.4425) exerted negative high direct influence while, evening relative humidity (0.9534) exerted positive high direct influence on population build-up of H. armigera. Morning relative humidity exerted high negative indirect effect (-0.8193) through evening relative humidity and high positive indirect effect through wind speed (0.4493) and evaporation (0.6588) during rabi, 2012-13.
Authors and Affiliations
A. M. BHARADIYA
Keywords
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