The main diseases and insect pests of blueberries are the larvae (grubs) of "dry borer" and "chafer", as well as "leaf chlorosis", "leaf blight", "rigid fruit disease", "leaf-eating moth", etc. Pest status. Good prevention and treatment can prevent outbreaks. The following editor will share the key to the prevention and control of blueberry pests and diseases.
1. Agricultural control:
Strengthen phytosanitary measures and prohibit the transfer of seedlings from epidemic areas. Strengthen the management of fruit trees, rationally prune them, apply fertilizer scientifically, promptly eradicate fallen leaves and fruit that are plagued by pests and diseases, do a good job in weeding, drainage and irrigation, and garden cleaning, improve and optimize the orchard ecosystem, and create an environment conducive to the growth of fruit trees. Effectively reduce the number of sources of pests and the incidence of pests and diseases.
2. Chemical control
Rust: After entering the rainy season and before the onset of the disease, spray 1:1:160 Bordeaux mixture, or spray Fuxing, or flusilazole, or thiophanate-methyl for prevention. After the symptoms were found, azoxystrobin was sprayed (adding an appropriate amount of citric acid to enhance the efficacy) to control the development of the disease.
Root (stem) rot: 800-1000 times of 72% metalaxyl manganese; 600-800 times of 64% antiviral alum; 800-1000 times of nail cream?
Grubs: After fruit picking, use phoxim or chlorpyrifos mixed with water to irrigate the whole garden 2 to 3 times.
Drosophila: Arrange the fallen fruit in time, and use sweet and sour liquid (sugar: vinegar: wine: trichlorfon: water ratio 3:3:1:1:10) to trap and kill. Usually, the sweet and sour liquid is put into a plastic bottle with an opening on the side and hung on the tree to trap. Note that the opening should not be too large to avoid accidentally injuring the bees.
Precautions
That is, what should be done when using chemical control measures is to adhere to the principle of not using drugs 20 days before the ripening period of blueberries and before the end of fruit picking. In particular, highly toxic pesticides cannot be used. Different pesticides should be used alternately when needed.
Blueberry fruit is rich in nutrients, but it must be ensured that there is no chemical fertilizer or pesticide residue in the fruit body. Otherwise, the fruit will lose its own commodity value.
