Prevention and treatment of jujube anthracnose
Treatment Of Intestinal Infection,Treatment Of Gastrointestinal Ulcers,Treatment Of Gastrointestinal Ulcers Gmp Food additive Herbicide Co., Ltd. , http://www.chherbicide.com
December 17 05:07:15, 2018
Jujube anthracnose prevention and control method Jujube anthracnose is an important disease in the production of jujube, distributed in Henan, Shanxi, Shaanxi, Anhui and other provinces. Henan Lingbao jujube and Xinzheng gray jujube suffered the most. Fruits in the near-maturity period, fruit often fall off early after the disease, the quality is reduced, and serious people lose their economic value. Anthracnose damage generally yields 20-30% of the annual loss, and the year of heavy disease loss is as high as 50-80%. In addition to injuring the jujube, the disease can also invade apples, walnuts, grapes, peaches, apricots, and hedgehogs. First, the symptoms: the main infection of fruit, but also infested jujube hanging, jujube leaves, jujube and jujube stocks. In the affected area of ​​the fruit shoulder or fruit waist, yellowish water spots initially appeared, gradually expanded into irregular yellow-brown patches, and round depressions were formed in the middle. The lesions expanded and became red-brown. Falling fruit. Second, the cause: jujube, anthracnose, pathogenic bacteria in the remaining jujube hanging, jujube head, jujube stocks and fruit in the winter. In addition to the influence of climatic conditions, the length of the incubation period is closely related to the viability of jujube trees. The onset and severity of onset depends on the duration of local rainfall and the duration of rainy days. More rainfall, or continuous rainfall, continuous rain, the relative humidity of field air above 90% is early and heavy. 3. Prevention and cure 1. Clear Garden: Remove the remaining overwintering old jujube cranes, clean the landed jujube cranes, jujube leaves, and deep-fall winter; combine pruning to cut pests and branches and dead branches to reduce the source of infection. 2, to strengthen the management of the jujube garden. The addition of farmyard fertilizers can increase tree vigor and increase plant disease resistance. In winter, 30 kg of farmyard manure was applied to each plant. Ammonium bicarbonate is applied during June-July, and the flowering and young fruit period can be combined with pest control and treatment, and Potassium dihydrogen phosphate and urea can be sprayed on the leaves. 3, change the processing method of dates. The use of hydrazine can prevent rot caused by high temperature and high humidity conditions. 4, pharmaceutical control. From late July to late August, spray 1:2:200 times Bordeaux mixture to protect the fruit, which can prevent and cure anthrax and prevent the infection of date rust.