Ulcer disease is one of the most serious damage to citrus fruit trees, whether it is seedlings, young trees, or fruit trees, are very susceptible to infection with ulcer disease, branches, leaves, buds, fruits will be affected by ulcer disease. After the appearance of ulcerated material, the tree declined, the branches withered and died The method is to thicken the recommended agent into a liquid with water, and the amount of use is two hundred grams per acre. Spray the leaves of citrus seedlings as the main, front and back evenly sprayed through, sprayed until the citrus tree dripping. Prevention efficiency can reach more than eighty-five point nine percent, which is a very good agent. First, cut off the onset of branches and leaves. The early stage of the onset of ulcer disease, you can cut off the diseased branches and leaves, or the saplings will be pulled out and burned, to prevent the spread of ulcer disease, affecting other healthy saplings or orchards.

The pests and diseases of citrus are mainly red spider and ulcer disease. Red spider is serious, will inevitably affect our photosynthesis, increase the wound, will lead to some infection of the disease. Let's say the rain is more, because the germs it is like through the rain, wounds, citrus ulcer disease can be spread by the wind and rain, can be distributed in the citrus according to the parts, leaves and fruits, and so on. And in the prevention and treatment of less effective agents, the entire orchard, if the prevention of negligence to bring the ulcer disease, the causative agent will be in the entire orchard gradually develop and grow, in the whole if the outbreak must be cut down the tree burned to isolate the source of infection, it is best to stop a year and then planted, can not be purchased in the citrus epidemic area without a license seedling, the establishment of a closed orchard, regular drugs to prevent the fruit tree and the surrounding plants, you can effectively prevent the ulcer disease,

This is the first time that we have seen the disease in the world, but it is not a problem. /p>

You can use herbal fungicides to prevent and control citrus ulcers again on the effect is good, beautiful fruit An organic pesticides, security is very high, continuous use will not produce resistance, more importantly, herbal chelating, sterilization and nutrition. Avoid copper preparations + copper preparations, inorganic copper + other metal ion pesticides, do not long-term monotonous use of inorganic copper preparations, so as not to superimpose the drug damage.1. Strictly quarantine, according to the local situation to choose resistant, disease-resistant varieties planting.2. Strengthen the cultivation and management, winter pruning and clearing the garden. Reasonable pruning, pruning, thoroughly cut out the diseased branches and leaves on the tree.