Key Points of Flower and Fruit Management Techniques for Sapphire Grapes
Sapphire grape is a very popular grape variety in recent years and is extremely well-liked in our country. The fruit of the Sapphire grape does not easily drop or rot. It has high storage and transportation tolerance, and it is relatively simple to grow. However, the Sapphire grape has high yields, and during cultivation, flower and fruit management must be done well to ensure its normal growth. So how should Sapphire grapes' flowers and fruits be managed? Below, the editor brings you the management methods. Let's take a look!
1. Water and Fertilizer Management
During the cultivation of Sapphire grapes, fertilizer must be applied at least twice a year, respectively after the soil thaws and after harvest, with compound fertilizer and farmyard manure as the main types. The main purpose of fertilizing is to meet the nutritional needs of the Sapphire grape at various developmental stages, including budding, branch and leaf growth, flowering and fruiting. Promoting fruit expansion, increasing yield, and the formation of plant organs all require large amounts of nutrients. When watering, the frequency and amount of watering should be determined according to the planting conditions. For example, an orchard without grass cover needs to be watered about 5 times a year, mainly to meet the needs of the grape at each growth stage. After the fruit coloring stage, watering and fertilizing must not be done, to prevent cold water from lowering the temperature and affecting the root's absorption capacity, which would cause flower and fruit drop.
2. Promoting Flowering and Bud Formation
Many friends, during the process of growing Sapphire grapes, will find the undesirable phenomenon of too few and too small flower clusters, which is caused by poorly developed flower buds. During management, we should increase the amount of fertilizer and water to ensure that before the plant's flower clusters form, the length of its reserve branches exceeds 2 m. Then twist the branches downward. When the branches grow to about 1.6 m, foliar fertilizer should be sprayed appropriately to promote leaf growth, improve photosynthetic capacity, and increase nutrient accumulation. Pest and disease prevention and control work should also be done well to prevent the leaves from being damaged.
3. Protecting Flowers and Fruits
When fertilizing, pay attention to the nutrient ratio of the fertilizer to prevent the branches from showing excessive vigorous growth during the jointing stage. Then, together with an appropriate amount of trace elements, spray on the leaf surface after sprouting to prevent nutrient deficiency. For excessively vigorous fruiting mother branches, promptly pinch the tips and remove the buds, concentrating nutrients on the fruit clusters. During the flowering and fruiting period, control the use of chemicals, do a good job of ventilation, and carry out pollination work around 12 o'clock every day. Control the temperature well. The daytime temperature should be controlled at around 25°C every day, and the nighttime temperature must not be too high, to prevent excessive vigorous growth. Water less in winter to prevent the temperature from being too low and causing freezing damage to the plant. Do a good job in pest and disease prevention and control. About 3 weeks after fruit set, thin the fruit promptly, spray fungicide, and bag the fruit.
4. Flower and Fruit Thinning
We should also pay special attention to the amount of flowers and fruits on the plant; the amount of flowers and fruits must not exceed the plant's tolerance range. Each main vine should not have more than 5 fruiting main branches; cut off excess fruiting branches. Then the number of fruit clusters on each fruiting branch should also not exceed 1, and excess newly emerging inflorescences should be promptly removed. The fruit weight on each fruit cluster must not exceed 1 kg. During the full flowering stage, pinch the tips of the flower clusters, and then about 3 weeks after fruit set, thin out overly dense fruits and small fruits.
The above is a brief introduction to the flower and fruit management techniques for Sapphire grapes. Sapphire grapes have relatively strong growth ability and are relatively simple to grow. However, doing a good job in management can effectively increase yield, enhance quality, avoid some unnecessary losses, and protect your own economic benefits from cultivation. That's all for today's introduction. This article is for reference only, and I hope it can help everyone!