|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A field experiment was conducted to work out relationship between growing degree days and phenophases of three wheat cultivars (PBW-550, PBW-502 and PBW-343) under two nitrogen doses@ 120 and 180 kg N ha-1, respectively. There was 18.94 percent reduction in growing degree days (GDD) at physiological maturity under120 kg ha-1 nitrogen level cumulative in comparison to 180 kg N ha-1. It was concluded that Cultivar (Cv.) PBW-343 accumulated more growing degree days under both nitrogen levels. The reduction in growing degree days from 180 kg N ha-1 to 120 kg N ha-1 was 9.27 per cent in Cv. PBW-502 followed by Cv. PBW-550 (8.63%).The regression model revealed significant positive correlation between GDD and yield at booting (R2 = 0.4709), leaf development completion (R2 = 0.4415) and soft dough (R2 = 0.3729).