Causes of poor coloring of eggplant

Eggplant is mainly divided into black-purple and green colors, the integrity of the eggplant skin color determines the quality and sales of eggplant, but in fact, in the process of planting black-purple eggplant carelessly will cause poor coloring, the skin is connected by black-purple and green. So what is the reason for the poor coloring of eggplant? The details are as follows.

1. Temperature

It may be due to the low temperature, especially the sudden drop in temperature in the second half of the night, resulting in the eggplant lycopene can not be converted, eggplant will appear poor coloring. Eggplant is a kind of high temperature crop, the most suitable temperature in the stage of eggplant coloring is about 25 degrees, which is the best temperature for eggplant lycopene transformation. The most suitable temperature for eggplant is about 28 degrees during the day, and it needs to be controlled at about 20 degrees at night. Therefore, it is necessary to control the temperature of the greenhouse at night and ensure that the temperature is appropriate in case of low temperature.

2. Lighting

Eggplant needs a lot of light time in the process of growth, so it is a kind of vegetable which is dependent on light. If the light time needed by eggplant is not reached in the process of growth, the eggplant will be weak, the yield will decrease, it is difficult to form pigment, and the fruit color will be insufficient to produce miscellaneous colors. And the phenomenon of eggplant whitening will be aggravated if poor light, rainy weather and malnutrition are added. Therefore, the greenhouse should not only adjust the temperature, but also eggplant to provide enough light, appropriate removal of presbyopia leaves, to maintain the light transmittance of the greenhouse can also be prevented.

3. Moisture

Eggplant is a kind of crop with luxuriant leaves and large leaves, and it can have many fruits in one plant, so it needs more water. However, the demand for water is also different at different stages of eggplant growth, and less water is needed when eggplant is just bearing young fruit. In the process of eggplant growing from small to large, the water demand becomes larger, and eggplant is a multiple crop, and it is also the stage of large water demand before and after harvest. If there is a lack of water, the eggplant becomes withered and incompletely colored, resulting in incomplete coloring. But if the humidity in the air increases, it is easy to cause diseases such as bacterial wilt.

4. Fertilizer

The fertilizer here mainly refers to nitrogen fertilizer, many people in order to increase eggplant production, to achieve high yield, will continue to apply nitrogen fertilizer. But if the nitrogen fertilizer is excessive, the nutrients are excessive, and the growth is too prosperous, it is not easy to color the eggplant. Especially at the stage when eggplant is close to maturity, excessive nitrogen fertilizer will make it grow too long, causing the leaves to block each other, affecting the maturity of eggplant and indirectly leading to poor coloring of eggplant.

The above four kinds are the reasons why the eggplant sorted out by the editor is badly colored. Poor coloring of eggplant will not only affect the appearance, but also lead to the decline of eggplant production and quality, so if you encounter this problem, I hope this article will be helpful to you.