Causes of whitening of eggplant and its control methods

Eggplant is a common vegetable in our life, but some growers find that purple eggplant has changed into white eggplant, which seriously affects the appearance quality of eggplant, reduces the commodity value, and seriously affects the income of farmers. So what is the cause of eggplant whitening? How to prevent and cure it? Let's get to know it.

1. Temperature reason

When the temperature in the greenhouse is too low, especially in the middle of the night, the transformation of lycopene in eggplant will be blocked, so eggplant is difficult to color and gradually whitens. When the vegetable in eggplant fruit is about 24, its lycopene formation effect is better. In the coloring period, the temperature is not suitable, it is easy to appear the phenomenon of eggplant whitening.

Prevention and control methods: to adjust the temperature, and spray new high-fat film to form a polymer film, not only heat preservation and moisture, but also can prevent germs, the results of the day temperature between 25-30 degrees, night temperature of about 16-20 degrees.

2. The reason of illumination

Eggplant is a light-loving crop, lack of light will lead to weak plant growth, reduced yield, pigment is not easy to form, fruit color is dim, but also easy to produce other colors, especially purple eggplant is not easy to color, directly affecting the commodity value. In addition, under the condition of low light, if you encounter malnutrition again, it will aggravate the occurrence of poorly colored fruit.

Prevention and control methods: under the premise of adjusting the temperature, properly remove the lower old leaves of the plant, combined with wiping the greenhouse film, and spraying photosynthetic nutrient film fertilizer can help crops absorb light, fertilizer and water for plant growth and development to the limit.

3. Partial application of nitrogen fertilizer

Excessive application of nitrogen fertilizer, excessive vegetative growth and excessive growth of branches and leaves will lead to unsuitable coloring of fruit and excessive application of nitrogen fertilizer, especially in the later growth stage, which makes plant vegetative growth stronger than reproductive growth. So that the leaves squeeze and cover each other and affect the ripening of the fruit, resulting in poor coloring.

Prevention and control methods: the application of nitrogen fertilizer should be controlled as far as possible in the later stage of eggplant growth. If the plant is not growing well, some new high-fat film and foliar fertilizer can be sprayed to solve the problem. If the phenomenon of vigorous growth occurs, it is necessary to spray Caohuawang No. 3 in time. Force the top tip exuberant nutrition to return a large amount, and the inertia advantage of sprouting is quickly weakened to the top situation. The trunk nutrition should be turned to the development of young fruit, improve the fruit expansion vitality, avoid leaf hypertrophy and improve field permeability.

The above are the reasons for the whitening of eggplant and the introduction of prevention and control methods, hope to help you, want to know more related knowledge, please follow us.