Management Techniques during the Grape Color Change Period
For netizens who are concerned, we will elaborate on the knowledge of green plants and flowers regarding the management techniques during the grape color change period. Next, the editor will introduce them.
Management Techniques during the Grape Color Change Period
Grapes are a very popular fruit with high market demand in China, especially varieties like Sapphire grapes and巨峰 (Jufeng) grapes. The planting area is large, and the management methods should be adjusted rationally according to the growth period of the grapes. So, how to manage the grape color change period? Let's take a look at the grape color management techniques brought to you by the editor!
Water Resource Management
The color change period of grapes is a crucial time for the fruits to become sweeter. To increase the sweetness of grapes at this time, it is first necessary to reduce the water content in the field. During the expansion to color change period, the water requirement of grapes decreases. Therefore, water should be reduced during the color change period of grapes to promote fruit coloring and ripening. Good field drainage is essential, especially during the rainy season. Also, maintain some moisture to avoid affecting sugar content and color, keeping the soil moist.
Reasonable Fertilization
When grapes enter the initial stage of color change, their demand for nutrients increases, so it is necessary to provide adequate nutrition for grapes through fertilization. This improves berry quality and promotes fruit ripening. However, attention should be paid to the type and amount of fertilizer, especially nitrogen fertilizer should not be over-applied, and the fertilizer should focus on phosphorus and potassium. For mid to late-maturing varieties, adjustments should be made according to the planting variety. This is also a critical period for the expansion of young fruits. At this time, a small amount of top dressing can promote the expansion of young fruits. It can also improve the quality and storage capacity of grapes and reduce fruit cracking.
Foliar Fertilization
During the color change of grapes, foliar fertilizers should be applied appropriately. This can effectively increase the volume and weight of the berries, improve sugar content and color, ensure orderly growth of the fruit, and maintain consistency in ripening time. It can also effectively prevent and control diseases and pests, and improve the storage quality of grapes. Foliar fertilizers should be applied on windless, cloudy days, and never in the sunny noon. Foliar fertilizers can only serve as a supplement to grapes and cannot completely replace soil fertilization, so soil fertilization should be the basis when applying foliar fertilizers.
Promoting Color Change
After grapes enter the color change period, bags should be loosened appropriately to provide adequate light for the fruit. Then, remove old and yellow leaves around the fruit to avoid blocking sunlight and allow the grape clusters to receive even light. Grapes need anthocyanins during color change, and the sugar produced by photosynthesis is the main substance for synthesizing anthocyanins. Therefore, we also need to protect healthy leaves. Finally, use growth regulators appropriately, mainly ethephon, but control the concentration and start with a small area.
The above is a brief introduction to the management techniques during the grape color change period. Management during this period is very important as it directly affects the quality and yield of grape fruits. Therefore, we must pay more attention. That's all for today's introduction, this article is for reference only, and I hope it is helpful to you.
The above is a comprehensive explanation of the management techniques during the grape color change period, hoping it can help you.