Causes and control methods of the latest death of over-summer spinach

Spinach in the summer, as long as properly managed, often can harvest excellent economic benefits, but in this process, there is often the phenomenon of dead trees, serious spinach in the whole greenhouse all died, bringing huge economic losses to farmers. So what is the cause of the death of spinach? How to prevent and cure it? Let's take a look at the pro-farm network.

1. Blight

Rhizoctonia solani is one of the causes of over-summer spinach death, which can be infected from the unearthed seedlings to the harvest period. After the spinach seedlings were unearthed and disturbed by the blight, the leaves began to wither at first. With the development of the disease, the roots of the seedlings began to rot, and the plants fell and died. After the adult plant was infected, the leaves began to turn yellow, until the stem turned black and rotted, withered and died.

Control methods: select the seeds with strong disease resistance when planting, then disinfect the seeds, and turn the soil deeply at the same time. Remove the residual body and disinfect the soil. after the disease, it can be treated by root irrigation with 1000 times 20% methyl fumarate EC.

2. Fusarium wilt

Fusarium wilt is easy to cause death in adult plants. after spinach is infected by bacteria, the leaves begin to darken and lose luster, the mesophyll tissue begins to yellowing, and finally the roots dry up and turn brown and die. In the early stage of the disease, the plant has obvious dwarfing and slow growth, especially in the summer, high temperature and humidity environment, after the onset of the disease with a very rapid rate of withering, yellowing and death.

Prevention and treatment: the prevention method in the early stage is the same as that of blight, and 1000 times of chlorobromoisocyanuric acid can be used to prevent and cure the disease.

3. Heart rot

Heart rot mainly harms the stem base and heart leaves of spinach, which can easily lead to spinach death. During sowing, the seeds are disinfected and easily infected after germination. After the seedlings are unearthed, the stem base begins to change color and constrict, and finally die and rot, resulting in dead trees.

Prevention and control methods: the seeds must be disinfected before planting to ensure that the seedlings can be unearthed very quickly. After the disease occurs, the seeds can be sprayed with 1000 times of 25% Amicida suspension or 1000 times of 50% isobarbamide wettable powder.

4. Rain Water irrigated

Summer is a high-temperature and rainy season. When spinach is over the summer, do not let it be watered by Rain Water. Once irrigated by Rain Water, it is easy to cause dead trees.

Prevention and control methods: so in the summer, we must do a good job of Rain Water preventive measures, do not Rain Water irrigated to the plant.

The above are the causes and control methods of summer spinach death brought by the pro-agricultural network. I hope it can help you. If you want to know more, please pay attention to the pro-agricultural network.