One of the common pathogenic factors in pistachio orchards is the nematode pistachio shell agent that plagues many orchards Especially in soils with sandy and light texture. Sometimes The management of this factor is out of the hands of the gardener and in many cases the garden is abandoned Be. General weakness and jaundice of trees are the most prominent symptoms of this factor It is a pathogen that causes damage by creating nodules on the roots. about The nematode agent is important for the management of the pathogen. Use compounds that It can increase the plant's resistance to this factor Conditions help. The use of compounds with terpenoid-like structures can be high Win the plant's resistance to all pathogens that are strong in these conditions Recommended. Research results in this regard have shown the application of living agents Like the bacterium Bacillus subtilis, it has been able to control nematodes well In pistachio trees.
