CORRELATION AND REGRESSION OF MANGO THRIPS (SCIRTOTHRIPS DORSALIS HOOD) IN HIGH-DENSITY MANGO PLANTATION UNDER SOUTH GUJARAT CONDITIONS
Keywords:Mango, Thrips, Population dynamics, Regression, Correlation, Navsari, Gujarat
Studies on population dynamics of mango thrips and their correlation and regression with abiotic factors in the high-density plantation of Kesar mango orchard under drip irrigation were conducted during 2017 to 2019 at mango orchard of Soil & Water Management Research Unit, Navsari Agricultural University, Navsari, Gujarat. Maximum (18.20, 8.00 and 9.80 thrips/twig) population of the thrips was recorded at 11th, 50th and 1st SMW in 2017, 2018 and 2019 respectively. Correlation analysis with various weather parameters indicated that sunshine showed a significant positive correlation with thrips whereas maximum temperature, evening relative humidity and evaporation rate had a significant negative correlation with the incidence of thrips. Among those abiotic factors, Maximum Temperature and Morning Relative Humidity were founded the highest impactable factors so far by simple and stepwise regression analysis.
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