Influence of Climatic Factors on Yields of Pistachio, Mango, and Bananas in Iran

Ali Sardar Shahraki, Tommaso Caloiero () and Ommolbanin Bazrafshan
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Ali Sardar Shahraki: Department of Agricultural Economics, University of Sistan and Baluchestan, Zahedan 98167-45845, Iran
Tommaso Caloiero: National Research Council of Italy, Institute for Agricultural and Forest Systems in Mediterranean (CNR-ISAFOM), 87036 Rende, Italy
Ommolbanin Bazrafshan: Department of Watershed Science and Engineering, Faculty of Agriculture and Natural Resources, University of Hormozgan, Bandar Abbas 79161-44453, Iran

Sustainability, 2023, vol. 15, issue 11, 1-14

Abstract: The aim of this study was to investigate the impact of climatic variables (minimum temperature, maximum temperature, average precipitation, and precipitation deviation) on the yields of pistachio, banana, and mango in cold, hot–arid, hot–humid, and temperate–humid climates using the Just–Pope function. The Just–Pope function is a relatively new approach in this context. The most effective variables were identified by stepwise regression and the Feiverson algorithm. Data were collected for the period of 1998–2020 and were tested for stationarity. Finally, the coefficients of the Just–Pope function were estimated for the three crops in the four climates. The results showed that the variables affecting pistachio yield were different in each type of climate. Most variables were effective in warm and dry areas, while cropping area, production trend, and lag were effective in cold regions and in hot and humid areas; the maximum deviation and minimum temperature, production lag, cropping area, and production function were significant in hot and dry regions at the 90% level. The Just–Pope function for pistachio, mango, and banana showed that the impact of temperature and average rainfall was region-specific. Based on the results, a 1% increase in rainfall can increase the banana yield up to 0.032 ton/ha. As Iran experiences extensive climatic fluctuations, horticulturists are faced with difficult conditions. Such practices as the use of cultivars that are resistant to temperature and rainfall variations in the regions in order to alleviate the risk of yield variations in orchards are recommended.

Keywords: climate fluctuations; production risk; Just–Pope model; tropical and subtropical crops; Just–Pope function (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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