What is the disease of yellowing grape leaves? How to remedy the yellowing of grape leaves?

Grapes are a common fruit in our daily life. Many people grow one or two at home for the convenience of picking. However, the leaves turn yellow while growing. So what is the disease that causes the yellowing of grape leaves? How to remedy the yellowing of grape leaves? Let's take a look.

What is the disease that causes grape leaves to turn yellow?

1. Physiological reasons

From a physiological point of view, the reason why grape leaves turn yellow is that they lack water. It can be said that when plants lack water, their leaves will begin to turn yellow and wither, and those with severe water shortage will slowly die. This is the simplest reason, and we must pay attention to it.

2. Pathological causes

The pathological reason naturally means that the grapes are diseased. For example, if the grapes suffer from leaf spot disease, the leaves will turn yellow. This is caused by bacteria and fungi. These diseases will cause local necrosis of the leaves.

How to remedy yellowing of grape leaves

Control Moisture

Grapes have very high requirements for water during their growth period, and the water requirements are different in different periods. In the early stages of grape growth, we need to maintain sufficient water, because at this time the grapes grow faster and have a greater demand for water. If there is insufficient water, the leaves will turn yellow. However, when the grapes reach the fruiting period, we need to reduce the amount of watering. Excessive watering at this time will cause various diseases and cause the grape leaves to turn yellow.

Reasonable lighting

Grapes need to maintain sufficient light during their growth period. If there is insufficient light, the grape leaves will turn yellow. However, when the light is very strong, we also need to provide appropriate shade for the grapes, especially in summer when the light is very strong. At this time, we must shade the grapes, otherwise the grape leaves will be sunburned and turn yellow.

Maintaining Temperature

Grapes like a warm growing environment. The most suitable temperature for grape growth is between 15 and 30 degrees. If the temperature exceeds 38 degrees, the grape leaves will suffer from sunburn, which will cause the leaves to turn yellow. At this time, we need to cool the grapes. If the temperature is lower than 10 degrees, the grapes will be frostbitten, and the leaves will turn yellow and fall off.

Things to note when growing grapes

Too much water and humidity will affect the quality of the fruit and easily breed diseases; drought can easily lead to fruit cracking, causing losses. Grape seedlings have very high requirements for light, which affects their growth, yield and quality. When there is insufficient light, the leaves will be thin, the leaves will be light, the bunches will be small, the flowers and fruits will fall off, the yield will be low and the quality will be poor, so the light in the vineyard must be good.

Grape seedlings cannot grow in swamps and heavy saline-alkali land, and are best planted in fertile sandy loam. Generally speaking, it does not require much from the land and has strong adaptability.

In the process of cultivating grape seedlings, in addition to considering the requirements of grapes for a suitable climate, attention should also be paid to avoiding and preventing disastrous climates, such as prolonged droughts, floods, severe frosts, strong winds, hail, etc. These may cause significant losses to grape production, so protective measures need to be taken.