What causes yellow skin fruit in tomatoes? Plus preventive measures
During tomato cultivation, the influence of various environmental factors often causes the phenomenon of yellow skin fruit in tomatoes, and once yellow skin fruit occurs, it is extremely difficult to treat. It can only be sold at a low price or discarded, causing relatively large economic losses to farmers. So what causes yellow skin fruit in tomatoes? How should it be prevented? Follow the editor to take a look.
1. Variety reasons
Because of the influence of environmental factors such as soil, water, and climate, varieties perform quite differently. Some varieties perform well in certain areas, but if they are grown in a different place, their performance will be different.
Preventive measures: Therefore, when selecting, it should be done according to the actual local conditions, choosing varieties with high yield, good quality, and good performance in resistance to green skin, resistance to yellow skin, resistance to fruit cracking, and resistance to viruses for cultivation.
2. Fertilizer and water reasons
⟦NL>According to observations, in plots with sufficient fertilizer and water, severe excessive vegetative growth, and poor ventilation, the occurrence of yellow skin fruit is relatively serious. In addition, in plots where nitrogen fertilizer is applied too much and potassium fertilizer is applied insufficiently, the phenomenon of yellow skin fruit is also relatively common.
Preventive measures: Therefore, fertilizer should be applied reasonably according to the different growth stages of tomatoes to reduce the phenomenon of yellow skin fruit. Before fruit setting, nitrogen fertilizer can be appropriately applied more to promote plant growth, and after fruit setting, base fertilizer should be applied more to promote fruit development. In addition, spraying chitosan, compound micro-fertilizers, and 6000-fold Aiduoshou during the fruit expansion stage can improve the plant's resistance and reduce the occurrence of yellow skin fruit.
3. Temperature reasons
The suitable growth temperature for tomatoes during the day is about 25-28 degrees, and about 12-15 degrees at night. During the stage when tomatoes turn red, when the temperature exceeds 32 degrees, the formation of lycopene will be inhibited, and green skin fruit or yellow skin fruit is very likely to appear. When the fruit is turning red, if it suffers low-temperature chilling injury below 8 degrees, the formation of lycopene will also be damaged, and yellow skin fruit is very likely to form.
Preventive measures: Tomatoes are warm-loving vegetables, and the suitable growth temperature is 20-30 degrees. In autumn, the nighttime temperature should preferably not be lower than 15 degrees. In the afternoon, the ventilation openings should be closed to maintain the indoor temperature. For the yellow skin fruit phenomenon caused by temperature differences, another layer of film can be hung near the ventilation openings so that the colder outside air does not directly stimulate the tomatoes, which has a certain preventive effect.
4. Pest and disease reasons
A variety of pests and diseases can also cause the phenomenon of yellow skin fruit in tomatoes. The main diseases include viral disease, leaf mold, early and late blight, etc., while the main pests include whiteflies, mites, leafminers, etc.
Preventive measures: Pests and diseases should be controlled promptly. When diseases are found, control them promptly and spray pesticides for treatment. For pests, measures such as installing insect-proof nets at ventilation openings, hanging yellow sticky traps, and chemical control can be used for integrated pest management.
The above is an introduction to the causes of yellow skin fruit in tomatoes and preventive measures. I hope it can help you. If you want to learn more related knowledge, please follow us.