Investigating the effect of climate change on pistachio yield

Document Type : Research

Authors

Pistachio Research Center, Horticultural Sciences Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Rafsanjan, Iran

10.22092/rhsj.2023.360550.1034

Abstract

Climate changes are an undeniable fact that are expanding at a faster rate in recent years, due to the increase in greenhouse gas production. Climate factors are the most important environmental parameters that directly affect the distribution of different species of nut trees. Climate parameters, especially air temperature, have wide effects on the growth and production of nut trees such as pistachio, particularly in hot and dry regions. The aim of this article was to review pistachio production in line with climate changes. Global warming and climate changes cause an increase in air temperature and thereby a decrease in chilling requirement of the trees during the rest period. On the other hand, the early start of pistachio phonological stages as flowering increases the probability of frost in some areas, which has become one of the most important agricultural problems in recent years. Studying the relationship between pistachio yield and some independent variables during consecutive years indicated that subsequent production, in addition to the previous yield, depends on some temperature-dependent variables, such as the hours of temperature below 7.2 °C and above 18.3 °C during the rest period and the hours of temperature above 26.7 °C at the beginning of growing season. As climate changes cannot be controlled on a wide scale, appropriate management in line with these natural changes, modification of varieties and implementation of suitable physiological programs would be important to reduce annual damage.

Keywords

Research in Horticultural Sciences
Volume 2, Issue 2
January 2024
Pages 177-190

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