How to Solve Fertilizer Burn in Strawberry Seedlings

Strawberries have a high fertilizer demand, but it is not easy to get fertilization right. Too little fertilizer means nutrients are not supplied adequately and the plants grow poorly, while too much fertilizer causes fertilizer burn. Fertilizer burn is very likely to occur during the strawberry seedling stage, so how should fertilizer burn in strawberry seedlings be solved? Let's take a look together.

1. Causes of fertilizer burn

First, organic fertilizer that has not been fully decomposed: in the high-temperature and high-humidity environment of a greenhouse, the fertilizer generates high temperatures during decomposition, causing root burn in the seedlings. Even if the fertilizer is decomposed, excessive application or placement too close to the roots can also cause fertilizer burn in strawberry seedlings. After the strawberries are planted out and have successfully revived, applying a large amount of inorganic fertilizer will also cause fertilizer burn in strawberries. When chemical fertilizer is used excessively and at low concentration, it can also very easily cause fertilizer burn in strawberry seedlings, and foliar fertilizer at too high a concentration can also cause fertilizer burn.

2. How to avoid fertilizer burn

When fertilizing strawberries, the amount must be controlled. A single fertilization should not be too much, especially nitrogen fertilizer, which must not be applied excessively. Organic fertilizer must be fully decomposed before use. Half a month before transplanting, apply the base fertilizer into the soil, and transplant after watering or rainfall. When spraying foliar fertilizer on strawberries, choose an overcast day or the evening of a sunny day. Do not spray at noon, because the temperature is higher then and water evaporates quickly, which will cause the foliar fertilizer concentration to become too high and lead to fertilizer burn.

3. Solutions

When fertilizer burn occurs, first replenish water in time. Drip irrigation is generally used for water replenishment, and it can be done several times, but pay attention to the amount each time to avoid waterlogging and root rotting. Alternatively, spraying some Bihu or spraying some brassinosteroid can also relieve fertilizer burn. If fertilizer burn occurs before plastic film mulching, do not rush to cover with plastic film. You can water appropriately to reduce the fertilizer concentration, which can also appropriately reduce fertilizer burn. If fertilizer burn occurs after covering with film and the ammonia smell is especially strong, then remove the plastic film and let these harmful gases escape. After the seedlings recover, you can spray ethephon foliar fertilizer, such as amino acids or humic acid, etc., but try not to apply chemical fertilizer.

  The above is an introduction to how to solve fertilizer burn in strawberry seedlings. We hope it helps you. To learn more related knowledge, please keep following us.