Do not panic with strawberries
After understanding and investigating, some strawberry sheds have appeared different degrees of fruit rot, and rotten fruit has both physiological rot and pathological rot. The relative humidity in the greenhouse is still relatively large, so it causes some physiological rotten fruit, that is to say, due to a long squid, the fruit of the knot is close to the soil, and there is clear water in the field, resulting in rotten fruit. If strawberries do not come into contact with clear water and the humidity in the field is high, the place where the strawberries come into contact with the mulch also tends to produce water, causing rotten fruit.
Pathological rotten fruit is the rotten fruit caused by various diseases. The cause of strawberry rotten fruit disease is very large, there are more than ten, such as strawberry powdery mildew, gray mold, fruit rot disease phytophthora, sclerotia, anthrax, etc., so in the prevention and treatment of pathological rotten fruit, you first need to understand What kind of diseases are caused, and then you can choose the drugs on the road. If you do not know the disease and blindly use drugs, it will not have much effect. Although there are so many diseases that cause rotting, the main diseases that have been investigated are: First, gray mold, taking Changfeng as an example, it is common, 70% to 80% of rotten fruit is related to it; the second is Phytophthora Phytophthora is more common in some areas this year; the third is sclerotinia; the fourth is the ultimate rot and rot disease, and of course there are black spot and snake eye diseases in the field.
Measures to prevent and treat diseases and rotten fruit
1. Take agricultural control as the main focus and control the humidity in the shed.
2, through the management of plants to control. Strawberry in the fruit period only need to save 7-8 leaves per plant to meet the growth and fruit expansion of the nutrient needs, if the strawberries too much leaves the field closed, will help a variety of diseases.
3, once the disease occurs in the field, there are rotten fruit phenomenon, it should be timely removal of diseased branches and diseased leaves, prevention and control of secondary infection.
4. For the field where the disease occurs, it is necessary to adopt chemical prevention methods in time.
The typical characteristic of rotten fruit caused by powdery mildew is a layer of white powder on the surface of the fruit, which can be controlled by the optional Kalasheng, Tsuibe, Shigao, Ami Miao and Fuxing. When using Segovia and Amibio, pay attention not to blindly overuse, otherwise it will have different degrees of inhibition on the growth and growth of strawberries. However, if strawberries have a tendency to prosper, the constant use of these two agents can control the growth.
When the incidence of gray mold is not serious, azoxystrobin, prohexine, melamine, etc. may be selected. If it is serious, it is recommended that you select some special agents such as Ruizhen, Kaiser, Kinda, and Lunasen. However, it is advisable to alternate the use of drugs when they are used. This will not only increase the control effect, but also prevent the development of pathogen resistance.
For Phytophthora fruit rot, it is recommended to choose Kate, Akbar, and Propene. Some plots also have the ultimate rot and rotten fruit disease. When the fruit rots, there will be cottony white mold on the fruit surface, and it is denser and thicker, such as batting. For this disease, drugs such as hymexazol, metalaxyl, and carnitine can be selected.
Sclerotinia caused rotten fruit performance is: began on the fruit surface with a sparse layer of white mold, and then gradually appeared black, such as rodent sclerotia. Control agents include sclerotia net and prochloraz, including prochloraz manganese salt and acetaminophen.
Anthrax is a disease of high temperature and high humidity, which causes rotten fruit mainly because of the humidity in the greenhouse. Relatively speaking, the temperature was still relatively high during the previous period. The poor ventilation led to an increase in the temperature during the daytime shed, coupled with inadequate control of anthrax during transplanting and seedling stage, which caused the occurrence of anthrax. Anthracnose damages the characteristics of the fruit: There will be a dark brown spot on the surface of the fruit, which will gradually turn black and have depressions. In the later stages, there will be flesh-colored, gelatinous objects on the fruit surface.
Dehydrated jalapeno Pepper,Dehydrated jalapeno Green Pepper,Dehydrated jalapeno Red Pepper,Dehydrated jalapeno Pepper Powder
Xinghua Lvwei Foods Co.,Ltd , https://www.lvweifoods.com