Seasonal Incidence of Onion Thrips, Thrips tabaci Lindeman in Gird Region of Madhya Pradesh, India
Sitaram Seervi *
Department of Entomology, College of Agriculture, Gwalior, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh, India.
Pradyumn Singh
Department of Entomology, B. M. College of Agriculture, Khandwa, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, India.
Rajni Singh Sasode
Department of Plant Pathology, College of Agriculture, Gwalior, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, India.
NS Bhadauria
Department of Entomology, College of Agriculture, Gwalior, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh, India.
Shivani Suman
Department of Entomology, College of Agriculture, Gwalior, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh, India.
Naveen
Department of Entomology, College of Agriculture, Gwalior, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh, India.
*Author to whom correspondence should be addressed.
Abstract
An investigation was undertaken to study the seasonal incidence of onion thrips, Thrips tabaci Lindeman, on onion in the Grid region of Madhya Pradesh, India. The experiment revealed that the thrips infestations in plants occurred during 52 Standard Metrological Week (SMW) in 2022–23 and 2023–24, with an average of 6.28 and 5.80 thrips per plant, respectively. The maximum incidence was 41.70 and 41.98 thrips per plant, respectively, during the 9 SMW in both consecutive years. The number of thrips was significantly positively correlated with minimum and maximum temperature during both the consecutive years of study. However, evening relative humidity was negatively correlated with thrips population during 2022–23 and 2023-24, but the morning relative humidity showed negative correlation only during 2022-23.
Keywords: Thrips tabaci Lindeman, abiotic factors, regression, correlation, population, sucking insect pest, onion