How to prevent and control green-shoulder in tomatoes? These methods you need to know
What methods can prevent green-shoulder in tomatoes? Please advise. The green-shoulder fruit of tomato is a type of rib rot. There are many causes of green-shoulder fruit in tomatoes, the most important of which is unbalanced fertilization, caused by high nitrogen and low potassium. Excessive application of nitrogen fertilizer with relatively insufficient potassium is the main cause of green-shoulder fruit in tomatoes....
What methods can prevent green-shoulder in tomatoes? Please advise
The green-shoulder fruit of tomato is a type of rib rot. There are many causes of green-shoulder fruit in tomatoes, the most important of which is unbalanced fertilization, caused by high nitrogen and low potassium. Excessive application of nitrogen fertilizer with relatively insufficient potassium is the main cause of green-shoulder fruit in tomatoes. After tomatoes enter the peak fruiting stage, encountering bad weather (low temperature, weak light), or unreasonable fertilization (over-application of nitrogen fertilizer), can also easily trigger green-shoulder fruit. The following measures can be taken to prevent it:
Increase the application of organic fertilizer, adopt formula fertilization technology, and avoid using too much ammonium fertilizer, so as to adjust the ratio of nitrogen, phosphorus and potassium in the soil and promote the plant's absorption and utilization of potassium. This is the most important measure to prevent green-shoulder fruit in tomatoes.
Extend the light exposure time of the vegetables. When the fruit enters the color-turning stage, remove the lower leaves of the color-turning truss and nearby leaves. Increasing light can reduce the occurrence of green-shoulder fruit.
Strengthen and nourish the roots to enhance plant resistance. Use a foliar fertilizer containing multiple elements (boron, calcium, magnesium, iron, zinc) on the leaves, of which the amino acid type is preferable, to promote dark green leaves, enhance photosynthesis, and increase the absorption of boron and calcium, which can reduce green shoulders, cracked fruit and so on.
Temperature must be strictly controlled. The daytime temperature should be kept at 25°C~30°C, the night temperature at 14°C~16°C, and the day-night temperature difference should not exceed 15°C.
Balance the number of fruits set on the plant; do not set too many fruits or set fruit at too low a position.
Control the concentration of the flower-dipping hormone; it must not be too high. After dipping flowers with the flower-dipping agent, fertilizer should be supplemented in time.
For greenhouses where green-shoulder fruit has already occurred, a high-potassium foliar fertilizer, chitin, etc. can be sprayed to alleviate the symptoms.
Click to get more tomato growing techniques
Click to get more vegetable growing techniques