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Vol. 11, Special Issue 7 (2022)

Seasonal occurrence of major insect pests of mango

Author(s):
MB Zala and TM Bharpoda
Abstract:
Investigations on seasonal occurrence of major insect pests of mango in relation to weather parameters were carried out at Horticulture Farm, B. A. College of Agriculture, Anand Agricultural University, Anand during September, 2013 to August, 2014 and September, 2014 to August, 2015. The results showed that hopper population showed two peaks with highly significant positive association between Evapotranspiration (EP), Bright Sunshine hours (BSS) and Maximum Temperature (MaxT) whereas highly significant negative association between Morning Relative Humidity (RH1) and Evening Relative Humidity (RH2). Thrips showed three-four peaks during course of investigations and showed highly significant positive association between EP and BSS whereas highly significant negative association between rainfall (RF), RH1, RH2 and Evening Vapour Pressure (VP2). Comparatively higher incidence due to leaf webber was noticed during first year than second year and showed negative association with EP, BSS, RF, WS, MaxT, Minimum Temperature (MinT) and Morning Vapour Pressure (VP1) while positive association with RH1, RH2 and VP2 showed positive effect on the pest activity. The higher incidence of P. matteiana was observed during 1st week of November and 2nd week of May during first year, while it was during 2nd week of November and 2nd week of May during second year. Gall midge showed highly significant positive association with MaxT during first year, whereas highly significant negative association with RH2 during second year. The activity of fruit fly commenced from 1st week of April and reached its peak on 3rd week of May during first year while its peak activity was noticed on 3rd week of May during second year and BSS and MaxT showed significant positive impact on the fluctuation of the fruit fly population whereas EP, RH1 and RH2 showed highly significant negative association during both the years. Comparatively higher mean incidence of termite was noticed during first year than the second year. It showed highly significant positive association with EP, BSS, MaxT and MinT whereas highly significant negative association with RH1. The higher activity of natural enemies viz., spiders and coccinellids (adults) was recorded from February to April in mango ecosystem.
Pages: 21-28  |  843 Views  441 Downloads
How to cite this article:
MB Zala and TM Bharpoda. Seasonal occurrence of major insect pests of mango. The Pharma Innovation Journal. 2022; 11(7S): 21-28.

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