Journal of Agricultural Meteorology

Journal of Agricultural Meteorology

Effect of climtic varaibles and meteoromogical drought on selected crops' yield in Kerman province

Document Type : Original Article

Authors
Sakineh Mijani 1
Bahareh Parsa Motlagh 2
Zohreh Ebrahimi Khusfi 3
1 Ms Student of Agroecology, University of Jiroft, Jiroft, Iran
2 Assistant Professor, Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Jiroft, Jiroft, Iran.
3 Associate Professor, Department of Environmental Science and Engineering, Faculty of Natural Resources, University of Jiroft, Jiroft, Iran
10.22125/agmj.2023.391272.1147
Abstract
In this research, multiple regression models were used to evaluate the effect of meteorological drought i and climatic variables selected crop yield in Kerman province using the Standardised Precipitation-Evapotranspiration Index (SPEI). The mean annual maximum and minimum air temperature, wind speed, relative humidity, total monthly precipitation, evapotranspiration, dew point temperature, air pressure, sunshine hours, and SPEI index, were collected/ calculated. Then these values were correlayed to selected crops yield by using during 1991-2018 period. SPEI values indicated that all study stations have experienced drought in the recent two decades and as a result the yield of crops across the study area has been significanetly affexted.The average coefficient of determination (R2) values in the best fitted regression models was observed for wheat with values of 0.39 and 0.95 (in Kerman and Anar station), for barley 0.27-0.9 (Baft and Anar), for potato 0.2- 0.75 (Jiroft and Kahnuj), for onion 0.23-0.54 (Baft and Jiroft) and alfalfa 0.31-0.98 (Kohnuj and Sirjan) were obtained. The results of this study can be used in suggesting new cropping patterns in coming decades for coping with drought and water scarcity in this province.
Keywords
Climatic Variables
Drought
Kerman
Production
SPEI
Subjects
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