Why Do Eggplants Turn White? Causes and Control Methods
Eggplant is a common vegetable in our daily lives, but some growers have found that purple eggplants turn into white eggplants, seriously affecting the appearance quality of the eggplants, reducing their commercial value, and seriously affecting the income of farmers. So what causes eggplants to turn white? How should they be controlled? Let's find out together.
1. Temperature causes
When the temperature in the greenhouse is too low, especially when the temperature in the latter half of the night is too low, the conversion of lycopene in eggplant is blocked, so the eggplant develops difficulty in coloring and gradually turns white. When the temperature inside the eggplant fruit is around 24, its lycopene formation is better. If the temperature during the coloring period is unsuitable, the phenomenon of eggplants turning white is very likely to occur.
Control methods: Adjust the temperature properly, and spray New High Lipid Film to form a layer of polymer film, which both preserves heat and moisture and prevents pathogens. During the fruiting period, keep the daytime temperature between 25-30 degrees, and the nighttime temperature at around 16-20 degrees.
2. Light causes
Eggplant is a light-loving crop. Insufficient light will cause the plants to grow thin and weak, reduce yield, make it difficult for pigments to form, make the fruit color dull, and also easily produce other mixed colors. In particular, it makes purple eggplants difficult to color, directly affecting their commercial value. In addition, under low-light conditions, if malnutrition occurs at the same time, it will aggravate the occurrence of poorly colored fruit.
Control methods: On the premise of properly adjusting the temperature, appropriately remove the old leaves on the lower part of the plant, combine this with wiping the greenhouse film, and spray photosynthetic nutrient film fertilizer, which can help crops absorb light, fertilizer and water to support plant growth and development to the limit.
3. Excessive application of nitrogen fertilizer
Applying too much nitrogen fertilizer and excessive vegetative growth, with branches and leaves growing excessively, will make it difficult for the fruit to color. Applying too much nitrogen fertilizer, especially too much nitrogen fertilizer in the late growth stage, makes the plant's vegetative growth stronger than its reproductive growth, so that the leaves press against and shade each other and affect fruit ripening, leading to poor coloring.
Control methods: In the late growth stage of eggplant, try to control the application of nitrogen fertilizer. If the plant growth is poor, spray some New High Lipid Film and foliar fertilizer to solve the problem. If excessive growth occurs, promptly spray Chuhuawang No. 3 to force a large amount of the vigorous nutrients at the top shoots to flow back, and rapidly weaken the inertial advantage of shoot flushing to a capped state. Shift the main stem's nutrients to young fruit development, improve the fruit's expansion vitality, avoid leaf hypertrophy, and improve field ventilation.
The above is an introduction to the causes of eggplants turning white and the control methods. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.