There are many examples and examples. For example, in some pistachio-growing pistachio wholesale areas last year, the need for cooling was not met for some trees and the clusters in the trees became very thin. Or, for example, heavy spring rains may greatly affect the number of seeds and the thinness of the clusters. Extreme heat this year in some pistachio orchards and in some pistachio-growing areas caused more than 70% of the crop and even more to be destroyed.
Unfortunately, not much can be done about climate change. A few years ago, spring frosts in the pistachio orchards of Sirjan destroyed 100% of the crop in some places. Even in California itself, with all the facilities and advances, sometimes nothing can be done about sudden climate change! Crop emptiness in California last year due to extreme heat and drought caused a significant percentage of pistachio crop to be lost !! Even in the case of pests and diseases, heavy rains and frosts can significantly reduce the amount of damage.