Effect of Planting Dates and Varieties on The Incidence of Cabbage Butterfly (Pieris Brassicae) in Nagaland Waluniba*, Ao M. Alemla, Singh H. K., Neog Pankaj, Imtinaro L. Department of Entomology, SASRD, Nagaland University Medziphema Campus, Medziphema, 797106, Nagaland *Email: waluaj@gmail.com
Online published on 31 August, 2017. Abstract Field experiment conducted in 2013–2015 at the experimental cum research farm, School of Agricultural Sciences and Rural Development, Nagaland University, Medziphema campus, evaluated the effect of sowing dates and varieties against the large white butterfly (Pieris brassicae) on cabbage. The results revealed that late planting on 19th December harboured the maximum incidence, in terms of number of caterpillars/plant (8.50–2013–2014; 6.96–2014–2015, respectively). The pooled data showed a mean incidence of 7.3. Early planting on 19th November was observed with the least incidence. Among the varieties, the maximum incidence was observed in “Pride of India” (9.45–2013–2014; 7.47–2014–2015, respectively), with the pooled mean being 8.46. The lowest population was observed in “Green Express” (2.85–2013–2014; 1.78–2014–2015) and the pooled data showed an incidence of 2.32. The interaction of dates of planting and varieties was observed to be significant. Top Keywords Pieris brassicae, cabbage, dates of planting, varieties, caterpillars per plant, incidence, Green Express. Top |