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Vol. 10, Special Issue 5 (2021)

Seasonal incidence of pod bugs in cowpea (Vigna unguiculata L.) in dry land eco-system

Author(s):
C Raghu Prasad, A Rajesh, SR Koteswara Rao and B Ramana Murthy
Abstract:
Seasonal incidence of pod bugs in cowpea (Vigna unguiculata L.) in dry land eco-system was carried out during Kharif 2018 at dry land farm, S.V. Agricultural College, Tirupati. Three dates of sowing at fortnightly intervals starting from June 15th was considered for the study. The incidence of pod bugs was low in early sown crop when compared to the mid and late sown crop. Among the five sps of pod bugs, the incidence of Riptortus pedestris and Clavigralla gibbosa was high compared to other species of pod bugs. Correlation studies between incidence of pod bugs and weather parameters viz: Maximum temperature, minimum temperature, relative humidity, rainfall, sunshine hours, evaporation, revealed that incidence of R. pedestris exhibited significant positive correlation with sunshine hours and rainfall in early and mid-sowing. The population of C. gibbosa in early sowing exhibited significant positive correlation with the minimum temperature and negative correlation with relative humidity, rainfall. In mid sowing exhibited positive correlation with relative humidity and negative correlation with rainy days, evaporation. The population of N. viridula in early sowing exhibit significant positive correlation with sunshine hours, relative humidity and rainfall while negative correlation with the evaporation in mid sowing. The population of C. cribraria, A. phasiana in mid sowing exhibited a positive correlation with the relative humidity and negative correlation with the evaporation. The population of A. phasiana in mid sowing exhibit negative correlation with minimum temperature.
Pages: 154-158  |  73 Views  2 Downloads
How to cite this article:
C Raghu Prasad, A Rajesh, SR Koteswara Rao and B Ramana Murthy. Seasonal incidence of pod bugs in cowpea (Vigna unguiculata L.) in dry land eco-system. The Pharma Innovation Journal. 2021; 10(5S): 154-158.
The Pharma Innovation Journal