What is Grape Flower Stretching Technique
Let's share the topic of grape flower stretching technique with everyone, and the specific content is as follows:
What is Grape Flower Stretching Technique
Some grapes, after fruit preservation treatment, have a high fruit setting rate, which often leads to difficulties in thinning fruit later on. The mutual squeezing between fruit grains can cause fruit cracking, rot, and other symptoms, severely affecting the quality. Therefore, flower stretching is carried out before flowering. So, how to do grape flower stretching? Let's find out.
Benefits of Flower Stretching
Flower stretching can reduce the workload of thinning flowers and fruits later on, saving a significant amount of labor costs. After stretching flowers, the compactness of the fruit cluster is reduced, which is beneficial for increasing fruit grains, improving fruit quality, and preventing fruit cracking and rot. It can also increase the intensity of light affecting flowers, improve the fruit setting rate, and increase the spacing between flower clusters after stretching, which is conducive to reducing the prevention and control of diseases and pests.
Flower Stretching Varieties
The degree of inflorescence elongation is related to the timing of flower stretching. Early flowering can lead to excessively long inflorescences, while late flowering has no significant impact. It is generally done when the new shoots have 6-7 leaves and the inflorescence has grown to 7-10 centimeters, which is about 20-25 days after germination and about 20 days before flowering. Although flower stretching has many advantages, it is not suitable for all grape varieties. Some varieties may have large and small grains, and stiff fruits, which actually increase the thinning work. Generally speaking, Hongdiqi, Meirenzhi, Hongti, and Xiahei are suitable for flower stretching, while Jufeng is not.
Flower Stretching Methods
Currently, there are mainly two methods: fertilization and water management, and the use of chemicals twice a week. Fertilization and water management are relatively safe but slow and not very effective, and they are highly affected by temperature. Generally, water-soluble fertilizers such as urea, humic acid, and amino acids are applied 15 days before flowering. This method requires some practical experience. Applying nitrogen fertilizer before flowering carries certain risks, and there can be differences in environmental conditions in different regions. With an average daily temperature of about 20-25°C, fertilizers and water management can be used for flowers. Generally, when the fruit cluster detaches from the leaves until 10 days before flowering, it can be treated. Common chemical agents include gibberellin, Bihu, and inducing agents, among which gibberellin is the most commonly used.
Precautions
When using chemicals, attention should be paid to factors such as grape variety, tree strength, tree age, and climate. The concentration should be lower in high temperatures and higher in low temperatures, higher in strong tree strength and lower in weak tree strength. After flowering, disease prevention is necessary to avoid affecting quality and sales, and special care should be taken for certain varieties to protect the fruits.
The above is an introduction to the grape flower art. I hope it can help you. If you want to learn more, please follow us.
The sharing of the grape flower stretching technique mentioned above hopes to bring a little help to your life!