Pesticide price network introduces you to the application method of paclobutrazol in fruit trees 1, the trunk hole drilling method. Punch holes in the lower trunk of the main branch of the base (one hole under the three main branches, a total of 3 holes). The size, depth and biopesticide dosage of the base are determined by the size of the tree, the thickness of the trunk and the age of the tree. . Drilling diameter by hand 0.6 to 0.8 cm, 3 to 5 cm deep, 15% paclobutrazol powder is adjusted into a puree with a small amount of water, according to the dose of 6 to 9 grams of 3 to 5 years old saplings, 10 to 15 grams of 6 to 10 years old trees. They are buried in three holes, and the amount of the three holes is as uniform as possible so that the agent can be uniformly transported to all parts of the tree. Qiaohua densely planted trees without main branches, evenly punching three holes on the circumference of the trunk, and the height from the ground is convenient for operation. After filling the pesticides, the pores can be closed with yellow mud. 2. Trunk coating method. The oligo-mature tree of adult age scrapes off the old warp on the trunk, and the smooth saplings of the trunk can not be scraped. The width of the coating ring is about 1/3 of the circumference of the trunk, and the paclobutase powder with the concentration of 15% is 200 times. The film is tightly wrapped with a film to maintain a certain humidity of the drug ring, and is easily absorbed and utilized by the tree. The above two methods allow the medicine to directly enter the fruit tree through the stem tissue, thereby reducing the distance of soil roots absorption and transportation, and the effect is quick. It is not restricted by time, climate and soil, and can be applied all year round. Please indicate the source of China's pesticide Network http://
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Two application methods of paclobutrazol on fruit trees