What are the latest causes of fruit cracking in pear trees?
When growing pear trees, the most dreaded problem is fruit cracking, because cracking is one of the most common issues in pear trees. Because its incidence rate is so high, many growers do not have reasonable prevention methods. Below, let us learn about several causes that lead to fruit cracking, so you can provide targeted protection and be prepared to prevent fruit cracking.
1. Physiological fruit cracking
Physiological fruit cracking refers to abnormal conditions that occur during the pear tree's growth cycle, such as abnormalities in rainfall, temperature and other factors, while the grower does not make targeted adjustments, resulting in fruit cracking. Common examples include too much rain during the fruit expansion period while the grower fails to drain water in time; sufficient light during the expansion period, causing the fruit to grow extremely fast while water is insufficient, and so on. These are all causes of physiological fruit cracking. Therefore, when planting, you should adjust your orchard management methods in a targeted way, not stick to one unchanging approach.
2. Uneven fertilizer application
Fertilizer is also relatively likely to cause this disease. Many people have an inertial way of thinking, namely that more fertilizer means better fruit tree growth. In fact, going beyond the limit is as bad as falling short; balanced fertilization is the key to healthy growth of fruit trees. A common example is not taking nitrogen fertilizer seriously and continuously adding nitrogen fertilizer, which can lead to fruit cracking; secondly, knowing only a few basic fertilizers such as nitrogen, phosphorus and potassium while neglecting other trace elements needed by fruit trees, such as calcium and boron, can also lead to fruit cracking. When fertilizing, mix and apply evenly, understand clearly what kind of fertilizer is needed at each stage, and do not fertilize blindly.
3. Disease
⟦NL>Disease can also cause fruit cracking. Do not assume that most pear tree diseases only cause the pears to rot; some diseases can also cause pear trees to crack. For example, black spot disease, although in the early stage it only appears on the leaves, after it transfers to the fruit, it will cause the fruit to gradually crack and rot. So if you find that while the fruit is cracking the fruit tree also shows abnormal conditions, then you should pay more attention to disease-related causes.4. Abuse of hormones
The last one is generally caused by human factors. Not every orchard's pears will grow to be very high quality. In order to promote the growth and market appearance of pears, some people choose to use hormones on pear trees. If the dosage is well controlled, it can indeed help grow high-quality pears, but if the dosage is not well controlled, fruit cracking will occur, because these hormones cause the pears to grow abnormally, leading to an increased demand for certain nutrients. If these nutrients are sufficient, the fruit will naturally grow with an excellent market appearance; otherwise, it will cause the fruit to crack.
The above are some of the causes of fruit cracking when growing pear trees. These are only the more common ones. There are also some rare ones, such as too much sunlight causing the pears to split from sunscald, and so on. Everyone should first understand the cause before solving it.