The choose on six-year-old litchi trees cv. “Hong huay” planted in the phases 4x4 m at attitude 780 m meters above sea level 10 tree orchard at, mae-rim district, chiangmai province. Lictchi tree used in the experiment had pruning and maintaining healthy trees as well. Exercise maintaining shoots with chemical pesticldes “on CRD” with 5 treatment treatment 2 repeat 1 tree 1 repeat