What to Do About Rice Seedling Rot in Rice Planting? A Detailed Explanation of Prevention and Control Methods
Seedling rot includes seed rot, bud rot and seedling rot. Rice has many problems during the planting process, but seedling rot is the most serious. It mostly occurs in the low-temperature season of early spring, when seedling rot leads to missing seedlings, delays the best transplanting period, and makes normal planting impossible. So what should you do about seedling rot when planting rice? Below, Qinong Net brings you its prevention and control methods. Let's take a look.
1. Causes of rice seedling rot
Seedling rot is the general term for seed rot, bud rot and dead seedlings
Seed rot: poor storage during seed storage leads to a low germination rate of the seeds; also, when soaking the seeds, the water is not changed, or the soaking water is not clean, causing the seeds to turn sour and smelly; and too high a temperature during sprouting. All these causes can lead to seed rot.
Bud rot: bud rot occurs when planting in low-lying, waterlogged areas; after the seeds are sown, the seed roots are inhibited from penetrating downward during germination, leading to bud rot. Another cause is infestation by diseases, which leads to bud rot.
Dead seedlings: dead seedlings are caused by temperature changes. Often in a low-temperature environment, which is not conducive to the growth of the seedlings, the roots absorb weakly. When the temperature suddenly rises, transpiration speeds up, and the water absorbed cannot keep up, causing a water imbalance, and finally the plants wither and die.
2. Symptoms of rice seedling rot
The causes of seedling rot differ, and the symptoms also vary greatly. Seed rot mainly means that after sowing, the seeds turn black and begin to show signs of smelling bad and rotting. Bud rot means that after sowing the seeds have already germinated, but the young buds die before turning green; with bud rot, the affected parts show a milky white gelatinous substance, which gradually turns into a yellow fuzzy substance, causing the young buds to die. Dead seedlings means that after a cold wave, when the weather suddenly clears, the young seedlings show green wilt or yellow wilt; at first the tender leaves begin to wilt and curl, the stem begins to change color, and finally the plants wither and die.
3. Prevention and control methods for rice seedling rot
Before soaking the seeds, dry the seeds thoroughly, select better seeds and soak them in water. When soaking, make sure they are soaked through, and also pay attention to disinfection treatment. Choose a plot that is sheltered from the wind and faces the sun, convenient for drainage and irrigation, with loose soil and relatively high fertility for planting. Use chemicals to control the diseases that cause seedling rot. If the temperature is low, plastic film technology can be used to keep warm; when the temperature rises, remove the plastic film in time. During the planting period, observe at all times and deal with any adverse reactions promptly.
The above is what Qinong Net brings you about what to do about rice seedling rot in rice planting. There are many causes of rice seedling rot, so only by observing carefully can you prescribe the right remedy. For more related agricultural knowledge, please stay tuned to Qinong Net.