Calibration and validation of DSSAT model for kharif groundnut in north-Saurashtra agro-climatic zone of Gujarat
| Autor: | P. K. PARMAR, H. R. PATEL, S. B. YADAV, VYAS PANDEY |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Journal of Agrometeorology, Vol 15, Iss 1 (2013) |
| Druh dokumentu: | article |
| ISSN: | 0972-1665 2583-2980 |
| DOI: | 10.54386/jam.v15i1.1440 |
| Popis: | 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 %. |
| Databáze: | Directory of Open Access Journals |
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