What to Do If Grapes Are Not Coloring Properly
Comprehensive analysis of what to do if grapes are not coloring properly in terms of green plant maintenance, details are as follows:
What to Do If Grapes Are Not Coloring Properly
Grapes are a very popular fruit in our daily lives and are extensively cultivated in our country. There is a large domestic and international market, so more and more people are now growing grapes. However, many people find that the coloring of grapes is not very good during cultivation. So, what should we do if the color of grapes is poor? Let's make a simple introduction. Let's take a look!
Light Control
Light is very important for the differentiation of grape flower buds and also has a significant impact on the coloring of grape fruits. Both the intensity and duration of light will directly affect the coloring of grapes. Normally, if you want the grapes to color properly, the natural light intensity should be about 70%. Therefore, it is important to control the light and promptly remove some old or diseased leaves near the fruit clusters that may block the light. Strong leaves should be appropriately removed, and bags should be removed in time in the later stage to promote coloring. For late-maturing varieties, it is necessary to lay a reflective film in the orchard.
Water Resource Management
In the process of grape growth, although there is a certain demand for water, it is important to control the consumption of water, especially during the coloring stage of mature fruits. If there is too much water or excessive rainfall without proper drainage, the water content in the fruit will increase, thereby reducing the sugar content and anthocyanin concentration, affecting the coloring of the fruit. Therefore, a relatively dry environment should be maintained during fruit coloring. After grapes enter the color change stage, a small amount of watering should be done, and excessive watering should be avoided. If it rains, drainage should be done promptly.
Temperature Management
After grapes enter the color change stage, temperature control is essential. A large diurnal temperature difference is very beneficial for glucose and pigment accumulation in grapes. An appropriate temperature during the day can increase the accumulation of dry matter, but the temperature should not be too high, with the highest not exceeding 40 degrees, otherwise it will affect the coloring of grapes. At night, a low-temperature environment should be maintained to promote the coloring and sugar accumulation of grape fruits. If you want to increase the diurnal temperature difference, you can lay a layer of black film.
Proper Fertilization
During the color change stage of grapes, fertilization should be done properly, controlling the amount of fertilizer, and not over-fertilizing. Especially nitrogen fertilizer, if too much nitrogen is applied, it can lead to late maturity of grapes, thus affecting the coloring. When fertilizing, it is important to control the ratio of nitrogen, phosphorus, and potassium and supplement organic fertilizer appropriately. In addition, attention should be paid to supplementing nutrients such as calcium and magnesium, and foliar application of phosphorus fertilizer can be used to ensure the normal coloring of grape fruits.
The above is a brief introduction on what to do if grapes are not coloring properly. Today's introduction ends here, this article is for reference only, and I hope it is helpful to you!
This article shares a comprehensive method for dealing with poor grape coloring, hoping to solve your green plant problems.