Vol. 8, Issue 4 (2019)

Author(s):
Vimal Pandey, AK Singh, SR Mishra, Gulab Singh, Krishna Deo and Adita Mishra

Abstract:
A field experiment was conducted during Rabi season of 2011-12 to generate the ground truth data of chickpea crop at Agrometeorological Research Farm of N.D.U.A & T, of Kumarganj, Faizabad (U.P.). The experiment was conducted in split plot design and replicated 4 times. The treatments comprised of three dates of sowing viz. October 26th (D₁); November 10th (D₂) and November 25th (D₃) kept as main plot and three varieties viz. Pusa-362 (V₁); PG-186 (V₂) and Awarodhi (V₃) kept as sub plot. DSSAT crop growth simulation model overestimated the days taken to anthesis, first pod formation, first seed formation, days taken to physiological maturity, test weight, grain yield, straw yield and harvest index while model underestimated the leaf area index and biomass yield of chickpea crop. Lowest error % was recorded in timely sown crop of chickpea (October 26th) and error % increased with delay in sowing. Successive decrease of T max. and T min by 1 ⁰C over normal temperature increased the simulated grain yield of chickpea. Higher percent change 35.8% and 34.4% from base yield of 2340 kg-1 was recorded with decrease of T max. and T min. respectively by 3 ⁰C over normal temperature obtained during the crop period.