Vol. 7, Issue 5 (2018)

Author(s):
R Rajalakshmi, T Rangaraj, V Geethalakshmi, K Balakrishnan and A Rathinasamy

Abstract:
A field investigation was carried out at Agricultural College and Research Institute, Madurai during 2016 under irrigated condition with cotton cv. SVPR – 4 to study the effect of different levels of N and dates of sowing on chlorophyll content, dry matter production (DMP), no. of bolls plant^-1 and seed cotton yield. The experiment was designed in Factorial randomized block design with four replications. The experiment details on factor I was assigned with two dates of sowing (D₁-21^st September, D₂ -6^th October). Factor II comprised with three N levels (N₁-80 kg N ha^-1, N₂-60 kg N ha^-1, N₃ -100 kg N ha^-1). Among the dates of sowing, D₁ recorded higher chlorophyll content, DMP, no. of bolls plant^-1 and seed cotton yield. Nitrogen level significantly increased the chlorophyll content and higher values of DMP recorded at N₃ and the no of bolls plant^-1, seed cotton yield was higher in N₁. Among the treatment combinations, D₁N₃ and D₁N₁ were found significantly higher chlorophyll content, DMP and no. of bolls plant^-1 and seed cotton yield.