Q: How should the jujube coal contamination be prevented? Answer: Coal pollution, the main jujube tree leaves, fruits and branches, in severe cases, branches, leaves and fruit are covered by black mold, the entire canopy is black, the new leaf germination less, affect the leaf policy of photosynthesis, breathing And transpiration, resulting in less fruit set, fruit drop, and other serious impact on fruit yield. The germs mainly depend on wind and rain. The secretions or excretions of locusts, scale insects, etc. are used as the culture medium. They are repeatedly infested for many times a year, and the disease is prosperous from mid-July to mid-August. The rainfall is heavy and the air humidity is high. Years will lead to disease epidemics. Mancozeb and imidacloprid can be used, or sterilized Dan, carbendazim, etc. can be used to control the spray for 7 days and spray 2~3 times. Peptide Powder,Collagen Powder,High Purity Ipamorelin,Bodybuilding Gdf-8 Myostatin Powder Shaanxi YXchuang Biotechnology Co., Ltd , https://www.peptide-nootropic.com