What if the edges of apple leaves are dry?

In apple planting, problems are first displayed on the leaves of apples, so we can often observe the growth of leaves and know something about the growth of apple trees, whether they are sick, or lack of certain nutrients. And it's influenced by the outside world. In this way we can make adjustments accordingly. So what's the problem with the dry edges of apple leaves? let's take a look.

1. Reason

One reason is the lack of potassium, and the other is the excessive concentration of pesticides, spraying, causing drug damage. Sometimes too much fertilizer, too close to the root system, too high concentration, burn the root system, affecting the growth. Some diseases, such as root rot, can easily lead to edge drying. Sometimes lack of calcium can also lead to the phenomenon of marginal dry leaves.

2. Improve element deficiency

In general, if in the first few cases, you can start to improve. Potassium deficiency can add some potash fertilizer in time, or use plant ash mixed with soil. It should be improved after a period of time. It is best to keep the soil moist, absorb well, and maintain the balance of soil solution. In the case of calcium deficiency, it is best to use thioenzyme copper to irrigate the root, because the root is easy to rot after calcium deficiency. If only the old leaves are dry, use the rich people's card to cooperate with calcium. The effect is obvious, and the speed of returning to green is fast.

3. Drug damage and fertilizer damage

The use of pesticides to use safe and efficient pesticides, can not use some toxic, harmful pesticides, the use of the prescribed suitable concentration, can not increase the concentration casually. When using pesticide spraying, pay attention to evenly, do not spray a place for a long time. Re-use should be after the safe interval, after a longer interval before use. The use of farm fertilizer must be fermented, overused, not too close to the root, and the use of chemical fertilizer should be strictly controlled. The use of fertilizer for hydrolysis, foliar fertilizer should pay attention to the concentration, otherwise it is easy to burn.

4. Disease control

Some soil-borne pathogens are infected, causing the root system to rot. After the root rot, the plant begins to weaken, and the root system cannot be absorbed, it will be found. The leaves of the plant begin to dry up from the edge. The main control method is root irrigation treatment, planing the soil on the surface of the root system, exposing the root system, cutting off the diseased root, using Chinese herbal fungicide 300x and 1000 times garlic oil, irrigating together, and then covering the new germicidal soil.

Apple leaf edge dry, may be the above reason, if it is, you can refer to the above improvement methods. There may also be other reasons, the specific situation has a body analysis.