The reasons for the failure of grape coloring

Grape cultivation goes through several stages, each with its own specific characteristics. The color conversion period is one of the stages, and the color conversion period is when the grape color changes from green to dark blue. After the success of color conversion, it is almost mature, but very often there will be the phenomenon of disconnection. Although the failure of coloring has no effect on the taste of the fruit, the appearance of the fruit will be ugly and reduce the commodity value. So, what are the reasons that affect the coloring of grapes? Details are as follows:

1. Leave too much fruit

The editor also mentioned in the previous article that many fruit growers never manage the fruit on their plants in order to increase the yield of grapes. In fact, this will have a great impact on the yield and quality of grapes, especially in the color conversion period, need a lot of nutrition, but leaving too much fruit will lead to uneven distribution of nutrients in the plant. Some fruits even stop in the middle of the color change, showing the phenomenon of half green and half red. Therefore, we should reasonably thinning fruit, the number of fruit can not exceed the load of fruit trees, otherwise it will only be empty.

2. Lighting

When the grape changes color to coloring, the demand for light is very important. If not enough light time is provided at this stage, it will affect the photosynthesis of the grape. As a result, the accumulation of photosynthetic matter in the plant is insufficient, which can not guarantee the normal coloring of the fruit. And the demand for light time varies with different grape varieties. Therefore, according to the variety to determine the way and time of light, in the grape coloring period to ensure sufficient light in order to make the grape smooth coloring, forming a good appearance.

3. Fertilizer

Many fruit growers will apply a large amount of nitrogen fertilizer during the grape color conversion period. in fact, nitrogen fertilizer at this stage can not only not promote the coloring of grapes, but also affect the yield and lead to grape turning green. In the grape color conversion period, we have to re-apply phosphorus and potassium fertilizer, phosphorus and potassium fertilizer can provide enough nutrition for grape coloring. And this color conversion period is also the peak of continuous fertilizer demand for grapes, and the amount of fertilizer application is determined according to the growth and quantity of grapes. Not too much too little, too much will also cause branches, compete for the nutrition of the fruit, it is not good for the growth of the fruit.

4. Moisture

Moisture is also very important during the grape color conversion period, although the water demand of grapes is increasing during this period, but the phenomenon of stagnant water must not occur in the orchard. Too much water in the orchard or even too moist soil will have a great impact on the color conversion of grapes. Because in the grape color change, the root respiration is enhanced, if the soil is too moist, resulting in root breathing difficulties. As a result, the roots are unable to produce enough energy to absorb nutrients and provide grape growth. It also indirectly affects the coloring of grapes.

These are the main reasons for the failure of grape coloring, which is actually some management work that we need to do in planting. Do a good job of these basic work, there is no big problem with grape coloring, the most important thing is to strengthen the management of the orchard. All right, that's all for today's introduction, this article is for reference only, thank you for your reading and support, you can visit our website to see more related information!