Visible time complication of pistachio bony skin spot

He said: "From the time of fruit formation to the ripening and pistachio shell harvest of the crop, this complication is visible and the most damage and symptoms are observed from late April to late May." Hashemi Rad added: "At this stage of growth, the pistachio tree needs a lot of calcium to form bone skin, and any factor that reduces the calcium in pistachio fruit, leads to the destruction and destruction of bone skin."

Hashemi Rad described the most important symptom of this complication as the destruction of all fruits from the top to the base and specified: The fetuses of the fruits that have been affected by this complication are completely healthy. If in old age the fetus is damaged first and brown spots are observed on it.

Also, in the early stages of bone destruction due to calcium deficiency, the appearance of the superficial skin is healthy, but under the skin it is completely rotten and black. Eventually, the pistachio fruit turns completely black, which is called burning. No fungal, bacterial or viral agents or pests have been isolated from this complication.