What to Do About Rotten Walnut Fruit? A Detailed Guide to the Latest Control Methods
The walnut is a light-loving plant, and it has extremely strong resistance, so it can be grown in most areas of our country. Eating walnuts regularly can enhance the brain's memory and is greatly beneficial to brain development. At the same time, it 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 walnut plantings often show rotten fruit. What is going on? And what can be done about it? So the editors of Qinnong Network 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: excessively high temperatures, combined with excessive rainfall, poor air circulation in the grove, and overly high soil moisture lead to water accumulation in the grove, triggering fungal infection, and then gradually the walnut is found to be rotting. This symptom generally occurs around July in summer.
Symptoms of Rotten Fruit
Rotten walnut fruit does not rot all at once suddenly; instead, it progresses step by step. In the early stage of rotten walnut fruit, brown spots slowly appear on the walnut fruit and gradually spread, turning black little by little. If rain continues or no treatment and control are carried out, red raised spots will form one by one on the walnut fruit, and then the entire walnut fruit turns black and begins to rot. Finally, the whole fruit rots and the decay penetrates deep into the kernel, giving off a foul odor. Such walnuts have no value for use at all. If control is not strengthened, the losses will be severe.
Control Methods
We generally divide control methods into two types: one is physical control, and the other is chemical control. If the disease has not yet worsened, we usually use physical control methods for prevention, which can ensure the quality of walnuts to a great extent. Physical control methods generally use orchard cleaning and pruning diseased branches for prevention and control. Cleaning the orchard and pruning branches can remove the pathogens at the root, and they are very effective methods. Chemical control methods mainly use pesticides for control. We first need to remove the diseased fruit from the tree, and then spray 800-fold mancozeb solution, generally about three times, spraying once about every week.
The above is all the content compiled for everyone by Qinnong Network about the causes of rotten walnut fruit and the control methods. Although walnuts have strong resistance, they still often suffer from some diseases due to improper management, so you still need to pay attention when planting them. If you have any other questions about walnut diseases, you can also follow our Qinnong Network to get answers.