The Latest Causes of Grape Berry Rot and Soft Berries, and How to Prevent and Control Them

Summer is peak season for grapes on the market, and many growers' grapes have already ripened and are ready to be sold. Many farmers grow grapes, and this is the moment when a year of hard work pays off. But at this critical moment, many fruit growers' grapes begin to rot and turn soft. What is going on here? Below, Qinnong Web has summarized some causes, hoping to help fruit growers.

1. Causes related to disease

Many diseases can cause grapes to rot and turn soft, such as the common downy mildew, white rot, grape canker, grape bunch rot, and sour rot. These five diseases harm every part of the plant, and their symptoms differ, but in the later stages they all cause grapes to rot and turn soft.

Prevention and control methods: For any disease, start at the source. Before planting, disinfect and sterilize the environment, plow the soil deep and expose it to the sun until it turns white, and remove all leftover plants from the previous year to eliminate any possibility that the source of the pathogen can survive and spread. Observe promptly and deal with diseases as soon as they are found. First determine which disease it is, then treat it with a combination of chemicals according to its characteristics. Also, when a small area of disease is found, remove and burn the diseased leaves, branches, and plants, then spray chemicals to cure it.

2. Environmental causes

Besides disease causes leading to grape rot and soft berries, the environment can also cause it. For example, fruit exposed to direct sunlight for a long time can suffer sunburn, and in the later stages this causes the grape berries to shrivel, especially after rainy weather turns sunny, and also during continuous high temperatures of 33 degrees or above.

Prevention and control methods: For these causes, we must start with the grape plant itself, since storms may come at any time, and we need to cultivate strong vines to increase stress resistance. Environmental factors can also be improved through artificial means, such as greenhouse technology. In seasons of high temperature and strong light, shading can reduce the effects of strong light and high temperature.

3. Other causes

In addition to the above two causes, there are other causes, such as problems with the root system and leaves, for example root damage and massive leaf drop, so that nutrient supply cannot keep up during the grape fruiting period. There is also a lack of certain trace elements, and many farmers, in pursuit of yield and rapid ripening, use swelling agents and hormones heavily and without restraint. These causes lead to rot and soft berries.

Prevention and control methods: The root system and leaves are important parts of the plant and are related to the plant's growth and fruiting. In addition, when fertilizing, use less chemical fertilizer or avoid it as much as possible, and use more farmyard manure or organic fertilizer. During the swelling and coloring stages, try not to use swelling agents and hormones.

The above are the causes of grape rot and soft berries and the prevention and control methods brought to you by Qinnong Web. There are many causes of grape rot and soft berries, and many situations can lead to them. In daily planting, prevention should be the main focus, so as not to discover the problem too late.