How to prevent and treat magnolia seedling rotten neck disease?

The main reason for this situation is that there is more water, which causes fungal infection of plants, which can be sprayed with carbendazim solution.

Reason: If the amount of watering is not well controlled, too much watering will lead to water accumulation in its roots, and long-term water accumulation will lead to root rot.

Solution: reduce the amount of watering appropriately, as long as the soil is kept moist, you don't need to water, you can water twice a day in summer, and the spring and autumn seasons can be determined according to the wetness of the soil next to the soil, and the watering should be reduced in winter, and there can be no stagnant water.

Reason: If the amount of fertilizer is not well controlled, or if the fertilizer with high concentration is applied, it will be easy to burn the roots, and the roots will become rotten.

Solution: Reduce fertilization in moderation, do not get close to its roots when fertilizing, stay away from the roots of magnolia, and increase the amount of watering appropriately after too much fertilizer, so that the excess fertilizer can be discharged more quickly.

Reason: Long-term non-potting will produce a lot of stagnant water, once there is stagnant water, its root transport is easy to rot, long-term unrepotted soil will breed a lot of bacteria, may harm the roots, resulting in root rot.

Solution: To change the pot as soon as possible, disinfect the pot, replace it with suitable soil, cut off the rotten roots when changing the pot, and then disinfect, rinse and dry it and replant.

First, reduce watering, reason: if you can't control watering well, watering too much will lead to water accumulation in the roots, and long-term water accumulation will lead to root rot. Countermeasures:

Appropriately reduce the amount of irrigation, as long as the soil is kept moist, it can be watered 2 times a day in summer, the number of watering times can be determined according to the degree of soil moisture in spring and autumn, and the amount of watering can be reduced in winter to avoid water accumulation.

Second, rational fertilization.

Reason: If the fertilization of magnolia is not properly controlled, or if the concentration of chemical fertilizer is too high, it will easily burn the roots, and the roots will rot as a result.

Countermeasures: reduce fertilization in an appropriate amount, do not approach its roots when fertilizing, try to stay away from the roots of magnolia, and increase watering appropriately if the amount of fertilizer is too large, so that the excess fertilizer can be discharged faster.

Third, change dressings in time.

Reason: If the soil is not repotted for a long time, it will produce a lot of stagnant water, once there is stagnant water, its roots are very easy to rot, and if the soil is not repotted for a long time, a large number of bacteria will breed, which can be used to damage the roots and lead to root rot.

Solution: The pot should be changed as soon as possible, the pot should be disinfected, replaced with suitable soil, and the rotten roots should be cut off when changing the pot, and then disinfected, rinsed, and dried before planting.

Because of the long flowering period and the large number of diamond-level flowers in the flower pattern, magnolia flowers need more nutrients for growth and development. Proper fertilization must be carried out to provide sufficient nutrients for its growth and development, so as to ensure that the magnolia can produce a flourishing and beautiful flower when everything is normal for flowering.

1. Reduce watering.

Reason: If the amount of irrigation is not very good, too much watering, it will cause its roots to store water, and long-term water storage will cause root rot.

Solution: Moderately reduce the amount of watering, if the soil layer is kept moist, there is no need to water, in the summer can be watered twice a day, in autumn and spring can be decided according to the moisture level of the soil layer, in winter to reduce the watering, there can be no stored water. God Jean.

Second, effective fertilization.

Reason: If the amount of fertilizer on magnolia is not very good, or if the fertilizer with a high concentration value is applied, it will be very easy to burn the roots, and the roots will become rotten and dismantled.

Solution: Appropriately reduce the fertilizer, do not have to be close to its roots when fertilizing, need to be far away from the roots of magnolia, after the amount of fertilizer is applied too much, you can moderately increase the amount of watering, so that unnecessary fertilizer can be discharged more quickly.

3. Pour the pot immediately.

Reason: long-term non-potting will cause a lot of water, once there is water out of its roots is very perishable, long-term non-potting soil layer will breed many germs, will hurt the roots, and cause root rot.

Solution: To pour the pot as soon as possible, carry out disinfection and sterilization of potted flower pots, replace the appropriate soil layer, cut off the rotten fibrous roots at the time of pouring the pot, and then carry out disinfection and sterilization, clean and dry and replant.

Through our introduction to the Imperial Bureau, I believe you have a deeper understanding of the treatment of magnolia rotten roots.