What Causes Cucumber Stem Splitting? Detailed Explanation of Prevention and Control Methods

During the growing process, cucumbers can develop split stems. Stem splitting gives pathogens an opportunity to invade, and it also affects the cucumber's normal transport function. In severe cases, it can cause the plant to dry up and die, making the damage extremely serious. Cucumber stem splitting is actually a physiological disorder, so what causes it? Let's take a look at the detailed explanation below.

1. High temperature

In summer, the average temperature is high, especially the nighttime temperature, and the day-night temperature difference is relatively small. This causes many vegetables to grow extremely quickly, but they become thin and weak with long internodes. Combined with insufficient water supply, this leads to stem splitting in cucumbers.

Prevention and control methods: During periods of high temperature, temperature control measures must be taken, and the day-night temperature difference should be widened as much as possible. When daytime temperatures are too high, the temperature inside the greenhouse can be lowered by shading and spraying water mist. At night, ventilation should be strengthened to lower the temperature inside the greenhouse as quickly as possible, narrow the temperature difference, and cultivate strong seedlings.

2. Excessive soil temperature

In addition to high-temperature weather, soil temperature is also one of the causes of cucumber stem splitting. Excessive soil temperature affects root development, and in severe cases it hinders the roots' absorption of water and nutrients. Water and nutrient deficiency can cause the cellular tissues of the stem to shrink, resulting in splitting.

Prevention and control methods: Similarly, cooling measures should be taken during high temperatures. Shade nets can be set up or cooling agents sprayed to properly adjust the soil temperature so that root growth is in a suitable environment.

3. Boron deficiency

Cucumber stem splitting may also be related to boron deficiency. Generally speaking, boron deficiency in plants leads to poor flower bud differentiation, shriveled, twisted, brittle and easily broken leaves, brittle, thickened and hardened stems and leaves, and deformed flowers and fruits. Therefore, when boron deficiency is severe, it can lead to stem splitting, accompanied by suberization and water-soaked necrotic spots.

Prevention and control methods: Borax can be used at 0.5-1 kg per mu, mixed into the base fertilizer or applied with water. Alternatively, foliar fertilizer can be sprayed during the growing period. In addition, the application of nitrogen fertilizer and potassium fertilizer should be controlled to avoid affecting the roots' absorption of boron.

The above is an introduction to the causes and prevention and control methods of cucumber stem splitting. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.