An on Farm Trail and Front Line Demonstration on Management of Pod Borer Complex in Pigeon Pea
V. Ratnakar *
Krishi Vigyan Kendra, Kothagudem, India.
G. Veeranna
Krishi Vigyan Kendra, Kothagudem, India.
B. Shiva
Krishi Vigyan Kendra, Kothagudem, India.
K. Anand Singh
University Administrative Building, Rajendranagar, India.
P. Jagan Mohan Rao
Regional Agriculture Research Station, Warangal, India.
P. Raghurami Reddy
Agricultural College, Palem, Nagarkurnool, Professor Jayashankar Telangana State Agricultural University, India.
*Author to whom correspondence should be addressed.
Abstract
The study was undertaken on management of pod borer complex in redgram, Cajanus cajan by erecting of pheromone traps for monitoring of Helicoverpa armigera @ 4/ac. Spraying azardiractin 1500 ppm @ 5ml/ l, two sprays with 10 days interval during flower initiation stage. Spaying of Bt @ 2g/l at 25 per cent flowering stage of the crop followed by need based application of emamectin benzoate 0.4 g/l at flowering and pod formation stage was done in 5 locations for an on farm trial and 10 locations for front line demonstration in Bhadradri Kothagudem district of Telangana State during Kharif 2018 and 2019, respectively. The cost benefit ratio (BC Ratio) was higher in technology demonstrated plots with 2.5:1 and 2.3:1 whereas BC ratio was lower comparatively in farmers practiced plots with 1.8: 1 and 1.9:1 in corresponding Kharif 2018 and 2019.
Keywords: Helicoverpa armigera, Maruca vitrata, redgram.