Calibration and validation of DSSAT model for kharif groundnut in north-Saurashtra agro-climatic zone of Gujarat

Authors

  • P. K. PARMAR Department of Agricultural Meteorology, Anand Agricultural University, Anand, Gujarat – 388 110
  • H. R. PATEL Department of Agricultural Meteorology, Anand Agricultural University, Anand, Gujarat – 388 110
  • S. B. YADAV Department of Agricultural Meteorology, Anand Agricultural University, Anand, Gujarat – 388 110
  • VYAS PANDEY Department of Agricultural Meteorology, Anand Agricultural University, Anand, Gujarat – 388 110

DOI:

https://doi.org/10.54386/jam.v15i1.1440

Keywords:

Crop growth model, DSSAT, groundnut, simulation, calibration, validation

Abstract

The DSSAT model was calibrated and validated for kharif groundnut (cv. GG-2 and GG-20) using past experimental data (2007 to 2009) of Dry Farming Research station, J.A.U., Targhadia, Rajkot (200 18È N 700 56È E), Gujarat with two dates of sowing (D1: Onset of monsoon 1st July; D2: After 15 days of D1 15th July). The yield and yield attributes, phenological stages, harvest index, shelling percentage as simulated by model were compared with the observed data. The results revealed that the model underestimated the LAI and haulm yield for both the cultivars and overestimated rest of the parameters. The average error percent of pod yield for cv. GG-2 as simulated by DSSAT model was 2.2 % and for cv. GG-20 it was 1.6 %.

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Published

01-06-2013

How to Cite

P. K. PARMAR, H. R. PATEL, S. B. YADAV, & VYAS PANDEY. (2013). Calibration and validation of DSSAT model for kharif groundnut in north-Saurashtra agro-climatic zone of Gujarat. Journal of Agrometeorology, 15(1), 62–65. https://doi.org/10.54386/jam.v15i1.1440

Issue

Vol. 15 No. 1 (2013): June

Section

Research Paper

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