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What about the resin disease of citrus?
Citrus resin disease usually refers to the disease that infects branches in the form of resin disease or gummosis; Diseases that infect peels and leaves are called black spot disease or sand skin disease; Infecting fruits and causing them to rot during storage is called brown stem rot. Serious occurrence often leads to the destruction of a large area of citrus orchards or a large number of rotten fruits in storage and transportation.

Chemical control

1. Spraying: In the germination stage, 2/3 flowering stage and young fruit stage in spring, the traditional Chinese medicine fungicide Liangguoan is diluted by 500-800 times and sprayed evenly on the whole plant (branches, leaves and stems), which can effectively prevent and control diseases such as resin disease, foot rot, anthracnose, scab and canker, and at the same time strengthen.

2. Smearing: Scrape the diseased tissue with a sharp knife every April-May and September 9- 10/October, and then smear it on the diseased part with the original solution of Kuifuling or diluted 5 times, 3 days 1 time, twice in a row.

Agricultural control

1, cut off diseased branches, collect fallen leaves and burn them centrally or bury them deeply.

2. Strengthen cultivation management, strengthen tree vigor, improve tree disease resistance, pay special attention to antifreeze, drought resistance, waterlogging resistance and sun protection, avoid all kinds of door injuries, and avoid or reduce bacterial infection.

Essentials of plant protection

(1) Build a shelter forest. Shelterbelt can reduce freezing damage and mechanical damage, and keep trees strong disease resistance.

(2) Do a good job in preventing freezing, drought and flood. After harvest, timely apply fruit fertilizer, cultivate soil roots, spread grass, and smoke when the cold current comes. Do a good job in drought relief and drainage in time.

(3) combined with pruning to remove the source of disease. Combine pruning in early spring, cut off diseased branches and dead branches, and apply protective agent on the incision, and burn the cut diseased dead branches in a centralized way.

(4) The trunk is painted white. In the sparse orchard, the trunk should be painted white before the summer to prevent sunburn. The whitening agent can be made of 20 kg of quicklime, 1 kg of salt and 100 kg of water.