Vol. 12, Issue 3 (2023)

Author(s):
Giddi Thirumala Devi, Dr. N Emmanuel and Dr. V Sekhar

Abstract:
The present investigation was done on seasonal incidence of sucking pests of guava cv. Taiwan white during 2019 – 2020 in Dr. Y.S.R. Horticultural University of Andhra Pradesh which recorded the peak population of Ferisia virgata, Aleurodicus rugioperculatus during 9^th standard meteorological week (25.5 adults/branch and 27.38 adults/branch) in first season and 35^th (16.80 per cent) and 39^th week (26.48 per cent) in second season. The peak bud infestation (37.57 per cent) and fruit infestation (39.99 per cent) by Helopeltis antonii was observed during 9^th standard meteorological week first season and bud infestation was high during 38^th week (25.38 per cent) and fruit infestation was reaching peak at 39^th week (24.90 per cent). The correlation studies revealed that the maximum, minimum temperature and rainfall was negatively correlated with the infestation of all the sucking pests whereas, in the second season there is significant positive correlation with rainfall and highly significant positive correlation with maximum and minimum relative humidity with infestation of sucking pests.