Testing of InfoCrop model to optimize farm resources for mustard crop under tarai region of Uttarakhand
Pantnagar Journal of Research, Volume - 19, Issue - 3 ( September-December, 2021)Published: 2021-12-31
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Abstract
Field experiment was conducted at G. B. Pant University of Agriculture and Technology, Pantnagar, Udham Singh Nagar (Uttarakhand) during the rabi season of the year 2014-15 for -three dates of sowing and five planting geometries of mustard crop to test the truthfulness and usefulness of InfoCrop model; and subsequently to optimize the farm resources and decision making. In this study InfoCrop v 2.1 model was used to derive genetic coefficients of the Indian mustard var. RGN - 73 followed by its validation. After successful calibration of the model, simulated and observed values of the experiment were found to be in a good agreement for seed and biological yield while model underestimated the ¬LAI. Results showed a reduction of seed yield from 1780.5 kg/ha to 1556.5 kg/ha for the delay in sowing from 22nd October to 11th November under field conditions and a similar trend of decrease in yield was also simulated¬. Probability analysis was carried to optimize date of sowing at three levels e.g., 90%, 75%, and 60% for the past five years (2010 -2014). The results showed that optimum sowing window for mustard under Pantnagar region lies in the month of October (22nd -28th October) giving a potential yield of up to 2091.7 kg/ha. The planting geometry of 30 × 10 cm and, 30 × 20 cm and 30 × 30 cm was found favorable to get maximum yield under late and timely sown conditions, respectively.
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