The Incidence of Anthracnose in Jujube and Its Control Measures
The cultivation of jujube trees in China has a history of thousands of years. In the past 20 years due to the higher economic benefits of planting jujube trees, the jujube tree planting area has continued to expand, only in Binzhou City, Shandong Province and Huanghua City, Hebei Province, only a variety of winter jujube planting area It reached more than 1 million mu. With the expansion of the planting area, the disease prevention and control of jujube trees has also become more and more concerned by the jujube farmers. At present, it has entered the middle of July. Jujube trees are in a hot and rainy season. At this time of year, anthrax often begins to occur. The author recently talked to the juvenile farmers in the countryside and learned that the juvenile farmers still have unclear understanding of the incidence of anthracnose. They are eager to understand the regularity and prevention and treatment of jujube anthracnose. Symptoms of the disease: After infection, the diseased part or the jujube's waist is the most vulnerable. It initially turns light yellow, and then there are water-stained spots. It gradually enlarges into irregular yellow-brown patches, and a round depression appears in the middle. It is red-brown, causing the fruit to fall early, and the falling kernels of fruits falling dark become dark. When the weather is wet, small yellow-brown spots form on the lesions, and the diseased fruit becomes brown and tastes bitter. After drying, only the cores and filaments are attached to the skin and cannot be eaten. Anthracnose disease, low sugar content of the pulp, poor quality, most can not fall off, non-susceptible part of the fruit can be normal coloring, the incidence of more and more severe near the time of maturity, anthrax disease once infected in fruit infected with the disease, The occurrence of fruit brown lesions is very rapid and serious fruit drop. After jujube hanging, jujube head and jujube stocks were infected, they did not show symptoms in the early stage but existed in a latent state. The pathogens used mycelia to overwinter in the early morning hanging and jujube head and jujube stocks, and became the beginning of the following year together with the diseased berries. Infectious sources. Incidence pattern: jujube anthracnose disease is generally heavier in the middle of July to mid-August. Bacteria are transmitted by dew and wind and rain. The onset of the disease is sooner or later related to rainfall. If the rain is relatively frequent in June, the disease usually begins in late June, and the onset of drought is light or does not occur. The leaves suffered yellowing or yellowing, and some were dark brown and brown and hanging branches. Anthracnose generally occurs sporadically. If it can be prevented and treated in time, generally it will not cause great harm. Sometimes anthrax is also often cross-infected with fruit shrinking disease and rot disease. Control methods: 1. Clean up the date garden, and apply 2,000 grams of spray under every canopy or spray 2 kg without deep plowing to enhance the permeability of the soil under the canopy. Combine pruning in the spring and remove the remaining diseased jujube hanging from the jujube tree and burn it. 2. Drug control: Entering into the middle of July is the key time for preventing and curing jujube anthracnose. It can be sprayed with 800-fold thiazole zinc and 6000 times natural brassin at the beginning of July - Shuofeng 481 or 1:2 : 200 Bordeaux fluid, spray once every 7-10 days, even spray 2 times. Before onset or early onset, it is also possible to spray 50% carbendazim 700 times and 6000 times natural napin, Shuofeng 481, to better control anthrax. Hyaluronic Acid Meso Serum is the use of hyaluronic acid injections directly on the skin, allowing the facial skin moist and soft, shiny and translucent, so you have artists like smooth and translucent skin, the dermis can solve the problem of lack of water, improvement of small wrinkles, bring significant results.
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