What causes spinach seedling death? Detailed explanation of prevention and control methods
Spinach is rich in nutrients and also has the effect of stopping bleeding and nourishing the blood. Eating it regularly can also enhance the body's resistance and promote growth and development. It is precisely because of these benefits that it is relatively common on our dining tables. However, when growing it, the most feared problem is seedling death. Once seedling death occurs, it is very likely to cause total crop failure. So what causes spinach seedling death? Let's take a look at the detailed introduction.
I. Causes of seedling death
1. Fusarium wilt
Fusarium wilt can cause plant death. Infected plants show dull, lusterless leaf color, yellowing of the leaf mesophyll tissue, and the roots gradually turn brown and die. When the disease occurs, the plants grow noticeably poorly and become dwarfed. In summer conditions of high temperature and high humidity, affected plants quickly wilt, develop yellow leaves, and die.
2. Heart rot
Heart rot mainly damages the stem base and heart leaves of the plant. After the disease occurs, plant death is very likely. After the seedlings emerge, the stem base shows symptoms such as browning, constriction, sudden death, and rot, leading to plant death.
3. Damping-off
Spinach from the seedling stage to the adult plant stage can all be harmed by this disease, and after the disease occurs, death is very likely. After the seedlings emerge, after infection by Rhizoctonia solani, the leaves first wilt, and as the disease continues to develop, the plant begins to rot from the root system until it lodges and dies. After larger seedlings are infected, the lower leaves begin to turn yellow until the main root turns black and rots, shrivels, and dies.
4. Rainwater irrigation
When managing overwintering spinach, never let rainwater irrigate it. Once rainwater irrigation occurs, it is very likely to cause plant death. Therefore, during management, be sure to pay attention and take good rainproof measures to prevent rainwater from irrigating the plants.
II. Prevention and control methods
When sowing, carry out chemical seed coating on the seeds. After treating the seeds with chemicals, sow them. This can prevent the vast majority of diseases. For Fusarium wilt, root drenching with chlorobromoisocyanuric acid solution can be used for prevention and control; for heart rot, Amistar or iprodione can be used for prevention and control; for damping-off, root drenching with tolclofos-methyl emulsifiable concentrate can be used for prevention and control. If only individual plants are affected, promptly pull out the diseased plants and thoroughly disinfect and sterilize the diseased holes to prevent the pathogen from spreading through the soil.
The above is an introduction to the causes of spinach seedling death and prevention and control methods. We hope it can help you. If you want to learn more related knowledge, please follow us.