How to rescue strawberries from herbicide damage? Introduction to the latest remedial methods

During strawberry cultivation, improper pesticide concentration, improper timing of application, and improper mixing often lead to herbicide damage. Some malformation-type damage often occurs a few hours after spraying, while some chronic damage takes time to show up, and both affect the yield and quality of strawberry fruit. So how should strawberry herbicide damage be remedied? Follow along with the editor to learn more.

I. Symptoms of strawberry herbicide damage

1. Spots

They mainly occur on leaves or fruit. Common spots include brown spots, yellow spots, and blighted spots. Unlike disease spots, spots caused by herbicide damage are unevenly distributed on the plant, ranging from mild to severe, with spots both large and small, and their shapes are also inconsistent.

2. Yellowing

It mainly occurs on leaves. In mild cases, the leaves turn yellow; in severe cases, the whole plant turns yellow. Yellowing caused by herbicide damage is also different from yellowing caused by a lack of nutrient elements. Herbicide damage often progresses from yellow leaves to withered leaves, and the degree of occurrence varies with climate changes. When the temperature is high, yellowing is fast; when the temperature is low, yellowing is slow.

3. Malformation

Malformation mainly occurs on leaves and fruit and often causes curled leaves, clustered growth, root swelling, malformed flowers, malformed fruit, and so on. Unlike malformation caused by viral diseases, it occurs relatively commonly in the early stage and mainly in local areas, while in the later stage it often occurs sporadically and is often mixed in among the affected leaves and fruit.

4. Wilting

Wilting from herbicide damage is often a symptom shown by the whole plant, mostly caused by herbicides. Wilting caused by herbicide damage has no center of infection, and the process is mostly slow, with yellowing first and then dead seedlings, and no browning of the vascular tissue in the roots and stems.

5. Stunted growth

Herbicide damage inhibits the normal growth of the plant, making it grow slowly. Common herbicide damage is caused by triazole pesticides and herbicides. Compared with symptoms caused by other diseases, herbicide damage is often accompanied by pesticide spots or other herbicide damage symptoms, while diseases mainly show poor root growth.

II. Remedial measures

1. Supplement fertilizer to promote seedlings

For herbicide damage with mild symptoms such as leaf yellowing and scorched leaf edges, an appropriate amount of nitrogen fertilizer and compound fertilizer can be applied, or foliar fertilizer can be sprayed, to promote the plant's recovery.

2. Irrigation

For herbicide damage caused by pesticide root drenching and the use of herbicides under plastic film, fertilizing and spraying cannot solve the problem. Only watering to lower the pesticide concentration, reduce the accumulation of harmful substances in the root system, and relieve the symptoms will work.

3. Spraying alleviating agents

If the herbicide damage occurs from spraying alachlor, gibberellin or a 0.2% soap solution can be sprayed, which can alleviate herbicide damage caused by organophosphorus pesticides.

4. Spraying water

After spraying the wrong pesticide and causing pesticide damage, clean water can be sprayed promptly to wash the pesticide off the plant surface. If it is an acidic pesticide, an appropriate amount of plant ash or lime solution can be added to the clean water; if it is caused by an alkaline pesticide, vinegar can be added to the clean water. At the same time, attention should be paid to ventilation and air exchange, lowering temperature and humidity, to help harmful gases escape.

5. Removing leaves and fruit

After leaves are damaged, leaves that have already lost their green color should be removed promptly. Such leaves have already lost their photosynthetic function, and keeping them only consumes nutrients. Removing them promptly not only saves nutrient consumption but also inhibits the penetration and conduction of the pesticide within the plant. The same applies to malformed fruit, which also needs to be removed promptly.

The above is an introduction to how strawberry herbicide damage should be rescued. I hope it can help you. To learn more related knowledge, please keep following us.