Thumbnail Image

Theses

Browse

20191
Reset filters
Subject: Agricultural Meteorology × Author: Mohammad Ahatsham × End date: 2019 × Start date: 2019 × Thesis Type: Ph.D ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    In-season temperature variations in Indian mustard: An agrometeorological analysis
    (CCSHAU, Hisar, 2019-09) Mohammad Ahatsham; Surender Singh
    A field experiment entitled “In-season temperature variations in Indian mustard: An agrometeorological analysis” was conducted during rabi seasons of 2014-15 and 2015-16 at Research Farm of Department of Agricultural Meteorology, CCS Haryana Agricultural University Hisar. The D1 (25th Oct. and 07th Oct.) sown crop perform better in respect of agrometeorological, growth indices and yield parameters as compared to D2 (05th Nov. and 20th Oct.) and D3 (15th Nov. and 03rd Nov) date of sowings. The delay sowing of mustard crop led to shortening of vegetative and reproductive phase duration. Among the varieties; RH 0749 performed better in respect of agrometeorological, growth, stress indices, yield and yield attributes as compared to Laxmi, RH 406, RH 30 and Kranti in both the seasons. Higher temperature during reproductive phase caused stress which resulted in forced maturity and reduced the reproductive phase duration significantly under the late sown crop. Increased mean maximum temperature during the seed development phase decreased the seed yield and produced poor quality seed. The crop growth rate was initially low then increased till seed development (P5) and attained maximum value at seed development stage and then declined consistently till the maturity stage. The cultivar RH 0749 took more days (150 in 2015-16 and 138 in 2014-15 season) to attain physiological maturity. Under stress and non-stress conditions RH 0749 were found low drought susceptibility and high yield stability. The regression model developed for predicting growth and development of mustard crop using various meteorological parameters explained the variability to the extent of 62, 69, 87, 87 and 71 per cent for leaf area index, drymatter, biological yield, seed yield and number of siliquae, respectively.