123 How to cure the yellowing of small apple leaves

Do you add sheep dung to the empty space?

It may be apple rust, this disease will appear yellow, oily little dots, and then it will slowly spread, and then grow a lot of small black spots, if it is apple rust, then I recommend you buy this medicine for spraying**!

What kind of disease is Apple? If the pyrotechnic face may be sick, then we should go to a specialist.

You ask us what is the disease of yellow spots on apple leaves? The scientific name is macular disease. This is a sign of a vitamin deficiency, and you are going to fertilize the fruit trees.

If it is caused by too much or insufficient light, it is necessary to move the plant to a warm, cool and ventilated place for maintenance, and if it is caused by too much or too little water, it is necessary to control and replenish water in time. If the fertility is too low, it is necessary to supplement the fertility of the plant in time, if it is too much fertilizer, it needs to be diluted with appropriate watering, and if it is a pest or disease, it is necessary to use appropriate chemicals.

If the reason for the lack of light is to move the plants outdoors in time to contact the light, in the summer can be moved to the outdoors in the morning or afternoon when the light is weak, and in the winter can be given the right amount of light in sunny weather. If it is caused by too much light, the plants need to be moved to a cool and ventilated location to avoid direct sunlight.

If the water is insufficient, it should be watered in time, watered thoroughly, and the potting soil should be kept moist. In summer, the temperature is high, so you need to water it once a day, and in winter, the plants are dormant, so you need to control the water and keep the potting soil slightly dry. If you water too much, the root system of the plant has rotted, and you need to remove the plant, prune the rotten roots, prune and replant it in a pot.

If it is the cause of insufficient fertilizer, it is necessary to fertilize the green apples in time to supplement nutrition. During its growth period, it generally needs to be applied once for about 7 days with a thin compound fertilizer, and after each fertilization, it needs to be watered once. If the fertilizer is too much or the fertilizer concentration is too high, it needs to be properly watered to dilute the fertility and avoid burning the root system of the plant.

Diseases and insect infestations can cause yellowing of leaves, which need to be treated with chemicals. Leaf spot can be treated with agents such as phylbazole, thiasen copper and mesomycin, and rust can be treated with carbendazim, sulfur suspension agent and tebuconazole. Scaleworms can be treated with agents such as scale, scale, or carbendazim, and red spiders can be treated with agents such as mite-threatening, ethoxazole and icar mite.

Causes and solutions to yellowing leaves of potted apple trees.

1. Lignification of branches.

The probability of lignification of the branches of the apple pot is much higher than that of other plants during the growth process, and the leaves will turn yellow when the branches are lignified, and all the leaves will fall off in the later stageDuring the rapid growth of the apple tree, its old branches should be pruned in time, so that it can grow as many new branches as possible, and it will not age and turn yellow.

2. Overwatering.

The yellowing of the leaves of the potted apple tree is also caused by overwatering during the maintenance process, the root system of the potted apple tree is shallow, and it is easy for its roots to rot if it is watered too much, which makes the apple tree unable to breathe and absorb normally, and its leaves will turn yellow after the branches of the plant are not nutrients and water.

3. Excessive fertilization.

Some people who have raised apple potted plants add excessive nutrients to the potted plants in order to speed up the speed of apple tree fruiting, which not only fails to achieve the desired purpose, but will have a certain impact on the root system of the apple potted plant. The use of Bicca foliar fertilizer can solve the fertilizer damage.

4. Insufficient light.

The growth of apples needs sufficient light, if the apple pot is placed in a shaded environment for a long time, its leaves can not photosynthesize and cannot form chlorophyll, and the leaves will fade green and yellowThe apple tree should be potted in a sunny place so that its leaves can grow normally and not appear yellow.