On-farm impact of egg parasitoid, Trichogramma chilonis against maize stem borer, Chilo partellus in Punjab - SHERA, P S; SHARMA, SUDHENDU; JINDAL, JAWALA; BONS, MANINDER; SINGH, GURPARTAP; KAUL, AMIT; KAUR, RABINDER; SANGHA, K S (The Indian Journal of Agricultural Sciences, 2017)