What is the reason for the rotten fruit of plums

In the mature season of plums, some growers are not very happy, because the plums on their trees have rotted a lot, and their income has been greatly affected. The rotten fruit of plums has always been a big problem, and it is also a relatively common kind, and the losses caused after encounter are also relatively large, so what are the causes of daily plum rot?

1. Brown rot

This is a more serious disease, germs parasitic on plums, slowly develop over time, and finally threaten the whole fruit. At the beginning of the disease, there will be some spots on the surface of plums, which are usually brown, and then these spots will slowly mildew in hot and humid environment, until the whole fruit is covered with mildew spots. Some plums will become withered after they are covered with mildew spots, some will be covered with mildew spots on the outside, and some will rot and mildew. This can be prevented with 70% mancozeb wettable powder (micro-toxic) using drugs such as 438-700 times liquid spray, if the diseased fruit is disposed of first after the disease, and then 78% Bohr ·manganese-zinc wettable powder (low toxicity) using drugs such as 500-600 times liquid spray can be considered for treatment, be sure to pay attention to the concentration when using the agent, so as not to affect the sale.

2. Insect pests

Insect pests are also one of the reasons for the rotten fruit of plums, mainly caused by some insects invading the plums, while others are parasitic on the surface of plums and rot over time. Common bugs are beetles, heart-eating insects and so on. The former can be seen on or near the surface of plums, while the latter will generally drill into the fruit and need to see if there are holes. These pests will constantly suck the nutrients of plums, so that the skin of the fruit can not heal itself, and finally cause decay. The control effect of 65% Dysen zinc wettable powder 500 times 600 times or 75% carbendazim 300 times or 70% methyl topiramate 800 times 1000 times is good.

3. Overgrowth

Most of the rot caused by this situation occurs in the later stage, usually plums are fully ripe, pericarp aging, internal nutrition overflow, and finally cause infection and decay. On the plum tree, not all the fruits grow evenly, and there are always some fruits that grow faster than most. Some fruit growers generally do not rush to pick such fruits because the number is too small, and this happens over a long period of time.

These are some of the causes of plum rot, which are quite common, but due to local environmental differences, there are other situations that will also cause plum rot. If you want to know more relevant information, you can pay attention to our follow-up introduction.