When the citrus and grapefruit resin are seriously ill, the plants will even die. Many fruit farmers suffer losses due to the lack of timely pesticide control. Today, the Chinese pesticide net Xiaobian gives you advice to avoid citrus grapefruit resin disease:
.jpg)
Citrus resin disease is also called smut disease and rot. Mainly harms citrus. The yuzu resin disease damages the fruit, causing the fruit to be sand-like. Whether it is citrus resin disease or grapefruit resin disease, it is distributed in various citrus and grapefruit producing areas in China. When the orange tree is infected with resin, it will cause the leaves to wither or the whole plant to die. The branches are dyed with resin and are classified into two types: flow gel and dry. Flow gel type: When the disease occurs, the diseased part is gray-brown and water-stained, the tissue is soft, and the cortex has small cracks. After a period of onset, there is a brown glue, and the edge cortex is dry or necrotic, which leads to the xylem being exposed; The dry symptoms are as follows: the cortex is initially reddish brown, dry and slightly sunken, cracked, and the cortex is not easy to fall off. If the fruit is infected, there will be scattered dark brown hard protrusions on the surface of the fruit, and densely integrated with sand. Skin-like, the heart will rot and be faster than the peel. When the peel is l/3 - 1/2 rot, the heart has completely rotted, so this condition is called "wearing heart". Similarly, this condition can also harm grapefruit, and the symptoms are the same as above.
The pesticide control formula is as follows: Spray the 0.8:0.8:100 equal amount of Bordeaux mixture in the spring when it is just germinated, pay attention to the trunk and the big branch when spraying; after the disease occurs, carefully remove the diseased stem or the diseased dry skin. The wound of the diseased department is smeared with the following agents: 36% thiophanate-methyl suspension 100 times solution; 50% benomyl WP 200 times solution; bactericide 25% metalaxyl WP 100-200 times solution; % triethylphosphinate aluminum wettable powder 100 times solution. It is best to use a colorless transparent vinyl film to wrap the wound after application, so that the prevention effect is better; if necessary, combined with prevention and treatment of anthrax and scab, the following agents are sprayed at the beginning of the disease: 50% benomyl WP 1000- 1500 times solution; 50% thiophanate-sulfur suspension 500-600 times solution; 80% mancozeb wettable powder 400-600 times solution.
In the process of pesticide control, pesticide manufacturers remind everyone to pay attention to the amount of drugs to avoid phytotoxicity. For more information on pesticide control, please visit pesticide application section.
NINGBO LONGFLIGHT INTELLIGENT TECHNOLOGY CO.,LTD , https://www.long-flight.com