Dr. D. B. SisodiyaTimbadiya Brazilkumar G.2021-06-082021-06-082019https://krishikosh.egranth.ac.in/handle/1/5810169738Investigations on population dynamics, avoidable losses, varietal screening of pink stem borer, S. inferens infesting durum wheat and evaluation of different insecticides against S. inferens through spraying, seed treatment and soil application were carried out at Agricultural Research Station, Anand Agricultural University, Arnej during November, 2017 to February, 2018. The activity of pink stem borer larva(e) was started from 3rd week of December i.e., 51st SMW (2 larvae/10 damaged tillers) and fluctuated during crop period. During the 2nd week of January, 2018 (2nd SMW), it showed its peak by recording 27 larvae/ 10 damaged tillers. The pupa(e) of pink stem borer was observed from 4th week of December i.e., 52nd SMW (1 pupa/10 damaged tillers) and fluctuated during crop period. During the 2nd week of January, 2018 (2nd SMW), it showed its peak by recording 5 pupae/ 10 damaged tillers. The incidence of pink stem borer in wheat commenced from 3rd week to December i.e., 51st SMW (0.59%) and fluctuated during crop period. During 4th week of January, 2018 (4th SMW), it showed its peak by recording 15.26 per cent dead heart.EnglishThesis