Vol. 12, Issue 3 (2023)

Author(s):
PP Deshpande, US Kulkarni, DB Undirwade and VG Nagdeote

Abstract:
Field trials were conducted in 2017-18, 2018-19 and 2019-20 to know the efficacy of two species of Trichogramma viz., T. chilonis and T. japonicum for their effectiveness against yellow stem borer of paddy as compared to farmer’s practice of insecticidal treatments. The trial was conducted on farmer’s fields in Chandrapur district in Maharashtra State. Results of the pooled studies revealed that the per cent infestation of white ear heads due to yellow stem borer (Scirpophaga incertulas Walker) on paddy was found lowest in Trichogramma japonicum released fields with highest yields. There was reduction in the cost of management of stem borer in Trichogramma released plots which was reflected through increased ICBR when compared with insecticidal management plot. Trichogramma japonicum would provide answer for effective and eco-friendly management of yellow stem borer of paddy.