Detailed Explanation of the Latest Control Methods for Green Shoulder Fruit in Tomatoes

Green shoulder fruit in tomatoes is a type of rib-blight fruit and a physiological disorder that occurs during the tomato growing period. The occurrence of this disorder brings huge losses to farmers, so corresponding control measures need to be taken. So what causes green shoulder fruit in tomatoes, and how should it be treated? Let's take a look together.

I. Causes of Green Shoulder Fruit in Tomatoes

There are many causes of green shoulder fruit in tomatoes, and one very important cause is unbalanced fertilization, caused by too much nitrogen fertilizer and too little potassium fertilizer. Excessive application of nitrogen fertilizer and relatively insufficient potassium are the main reasons for the formation of green shoulder fruit in tomatoes. After tomatoes enter the color-turning stage, too high a nitrogen level in the plant body will cause the nutrient level to be too high and affect the formation of lycopene, making the fruit color unevenly and forming yellow shoulder fruit. The second cause is the variety; from a genetic perspective, varieties that are resistant to storage and transport show the green shoulder fruit phenomenon to varying degrees. The third cause is temperature. After tomatoes enter the color-turning stage, they produce lycopene, and the suitable temperature for this is 10-25 degrees. If it is below 10 degrees or above 25 degrees, the formation of lycopene will be inhibited, so a large number of green shoulder fruits will be produced.

II. Control Methods

1. The most important measure to prevent green shoulder fruit in tomatoes is to apply more organic fertilizer, adopt formula fertilization, and use less ammonium fertilizer, so as to regulate the ratio of nitrogen, phosphorus, and potassium in the soil and promote the plant's absorption and utilization of potassium fertilizer.

2. After the fruit enters the color-turning stage, remove the leaves below the color-turning fruit cluster and nearby leaves. Increasing light can reduce the occurrence of green shoulder fruit.

3. Foliar fertilizer can be used to supplement the plant with trace elements such as boron, calcium, magnesium, iron, and zinc. Among these, the amino acid type is preferable, as it can promote dark green leaves, enhance photosynthesis, increase the absorption of boron and calcium, and reduce green shoulder and cracked fruit, etc.

4. Temperature must be strictly controlled, kept between 25-30 degrees during the day and 14-16 degrees at night, and the day-night temperature difference should not exceed 15 degrees.

5. Balance the number of fruits set on the plant, and avoid excessive fruit set or too low a fruit-setting position. Fruits that are excessive in number or set too low should be thinned in time.

6. The concentration of the flower-dipping hormone must be controlled and must not be too high. After using the flower-dipping agent, fertilizer should be supplemented in time.

The above is an introduction to control methods for green shoulder fruit in tomatoes. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.