Anthrax is the main disease that harms mangoes. Every year when mango germinating flower buds are used to aspirate flower spikes, it first harms the flowering ears, so that the flower heads are dry and the flower buds fall off, which reduces the fruit setting rate. After the flowering ear is damaged, young fruit and spring shoots are harmed, so that the young fruit falls off and the spring shoots die. If you cannot control the incidence of spikes, young fruit and spring shoots are also difficult to control. At present, mangoes have begun to germinate flower buds to draw spikes, which is the best time to prevent anthrax diseases. In the case of timely spraying and prevention, not only flowering ears are harmless, but young fruit and spring shoots are not easily damaged.
Specific prevention and control methods: When the buds of mango sprouts, the apical panicles and panicles are about 8-10 cm in length, and the branches begin, the leaves are sprayed with 600 times 25% chloral water solution, or 1500 times 46.1% copper hydroxide. Aqueous solution, or 1000 times 50% aqueous solution of methamphetazole, or 600 times 20% aqueous solution of copper thiazolyl, evenly spray all branches and leaves inside and outside the crown, pay attention to spraying on the flower buds and flower spikes, to start dropping drops of water is appropriate . Within four hours after spraying, rainwater should be flushed.
Since mango anthracnose is resistant to drugs and is resistant to drug resistance, it should be used alternately. Do not use the same drug multiple times in a row to avoid drug resistance. In addition, when the phosphorus and potassium content of mango spikes is at a relatively low level, it is susceptible to anthrax infection, and the effect of prevention and treatment of chemicals after the disease is not obvious, if adding 0.3-0.5% potassium dihydrogen phosphate aqueous solution in the liquid, or 800 - 1000 times StarPy solution with the same spray, you can enhance disease resistance, and accelerate the recovery of normal growth of diseased flower spikes.
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