What to Do About Rotten Walnut Fruit? A Full Explanation of Prevention and Control Methods
Walnut is a light-loving plant with extremely strong resistance, and it can be grown in most regions of our country. Regularly eating walnuts can enhance the brain's memory and is greatly beneficial to brain development. At the same time, it also has many other effects, such as treating neurasthenia and soreness and pain in the waist and legs, so it holds an extremely high market position. However, quite a few people have reported that rotten fruit often appears during walnut cultivation. What is going on? And what can be done about it? So the editors of Qinong Net immediately summarized it for everyone. Let's take a look below.
Causes of Rotten Fruit
The main cause of rotten walnut fruit is one of the most common walnut diseases, namely anthracnose. From this we can also understand why walnuts develop rotten fruit: it is because the temperature is too high, combined with excessive rainfall, poor ventilation in the grove, and overly high soil moisture, which leads to water accumulation in the grove, triggers fungal infection, and then gradually causes walnuts to show signs of rotting. This symptom generally occurs around July in summer.
Symptoms of Rotten Fruit
Rotten walnut fruit does not rot all at once suddenly, but progresses step by step. In the early stage of rotten walnut fruit, brown spots slowly appear on the walnut fruit, spread gradually, and gradually turn black. If rain continues or no treatment and prevention are carried out, red raised spots will grow on the walnut fruit, and then the entire walnut fruit will turn black and show signs of rotting. Finally, the entire fruit rots and the rot penetrates deep into the kernel, giving off a foul odor. Such walnuts have no value for use at all. If prevention and control are not strengthened, the losses will be severe.
Prevention and Control Methods
We generally divide prevention and control methods into two types: one is physical control, and the other is chemical control. If the condition has not yet worsened, we usually use physical control methods for prevention, which can largely ensure the quality of the walnuts. Physical control methods are generally carried out by clearing the orchard and pruning diseased branches. Clearing the orchard and pruning branches can remove pathogens from the root, and they are very effective methods. Chemical control methods mainly use pesticides for prevention and control. We first need to remove the diseased fruits from the tree, and then spray mancozeb 800-fold solution. Generally, about three sprayings are needed, once every week or so.
The above is all the content summarized for everyone by Qinong Net about the causes of rotten walnut fruit and the prevention and control methods. Although walnuts have strong resistance, they still often develop some diseases due to improper management, so attention should still be paid during cultivation. If everyone has other questions about walnut diseases, you can also follow our Qinong Net to get answers.