Detailed Explanation of Kyoho Grape Cultivation Techniques and Management Methods

Kyoho grape is one of the main cultivars in production, with strong adaptability, good disease resistance and cold resistance, and a preference for fertilizer and water. The fruit clusters are large, and the berries are large, with an average cluster weight of 400-600 grams, an average berry weight of about 12 grams, and a maximum of up to 20 grams. It ripens in late August, and when ripe it is purple-black, with a thick skin, abundant bloom, relatively soft flesh, sweet and juicy, with a strawberry aroma, and the skin, flesh and seeds separate easily, with a sugar content of 16%.

When to plant Kyoho grapes: it is best in spring and autumn, and Arbor Day is also the best time to plant grapes

Key points of Kyoho grape cultivation techniques

Improper cultivation leads to serious flower and fruit drop, so improving the fruit set rate in cultivation is the key to success or failure.

1. When the diameter of the new shoot exceeds 1.5cm, flower buds are not easily formed and fruit set is poor, so the first step is to control the application of nitrogen fertilizer to prevent excessive vegetative growth of the tree;

2. Pinching: pinch the fruiting shoots before flowering. Pinching should not be too severe or too light; too severe easily produces large and small berries, while too light fails to improve the fruit set rate. It is best to leave 5 leaves above the fruit cluster;

3. Cluster shaping: remove the secondary cluster and the 2-4 small branches at the base of the cluster, pinch off 2-3cm of the cluster tip, and keep only the 7-8cm middle section. This concentrates the nutrient supply at flowering, improves the fruit set rate, and makes the cluster compact;

4. Berry thinning: after fruit set, carry out appropriate berry thinning, removing small berries and berries inside the cluster, leaving 40-50 berries per cluster.

Kyoho grape planting management techniques

1. Timely bud removal and reasonable pruning

In the complete guide to Kyoho grape cultivation techniques, after grape buds break in spring, remove double buds and small buds early, and keep strong buds. Before flowering, pinch the main shoots in 2-3 rounds in a timely manner, remove secondary shoots, so that more nutrients are transported to the flower organs, and at the same time appropriately thin out some clusters, and 3-5 days before flowering pinch off 1/4-1/5 of the end of the cluster, so that nutrients can be concentratedly supplied to the retained berries.

In winter, adopt medium-long cane pruning, leaving about 10-15 new shoots per square meter of trellis surface, staggered above and below, ensuring that each grape cluster grows 15-25 leaves, with the per-mu yield controlled within 2500 kilograms. In this way, the clusters can be compact, the berries uniform, and ripening consistent, improving the flavor and color of the berries.

2. Strengthen fertilizer and water management to prevent premature aging of the tree

In the complete guide to Kyoho grape cultivation techniques, Kyoho grape has strong growth vigor and relatively high requirements for fertilizer and water conditions. But irrigation should be moderate, especially stopping watering 15-20 days before picking. The amount of nitrogen fertilizer applied should be controlled, and phosphorus and potassium fertilizers should be increased. For vineyards that have begun to bear heavily, attention should be paid to increasing fertilizer application to keep the tree robust and prolong the years of full fruiting.

Watering: after the grapes are uncovered in spring, water once to promote bud break. Before flowering, if the soil is not too dry, try not to water. After the flowers fade, the fruit enters a rapid swelling period, which is the period of greatest water demand, and it can be watered once every 10 days. Once the berries begin to color, stop watering to increase the soluble solids content of the fruit. Before burying the vines for winter, irrigate heavily once to help the grapes overwinter safely.

3. Measures to improve the fruit set rate of Kyoho grapes

Flower and fruit drop in Kyoho grapes is a common problem in production. Its main causes are poor development of flower organs, inability to pollinate and fertilize normally, adverse weather conditions during the flowering period, and nutritional imbalance within the tree. The following technical measures should be taken in production to improve the fruit set rate of Kyoho grapes.

Precautions for Kyoho grape cultivation

1. Flower and fruit drop and large and small berries

2. Poor stability of fruit quality (size, sugar content, color, bloom, flavor)

3. Tree vigor, yield, fruiting years (prone to premature aging)

4. Particularity regarding soil environment, fertilizer and water

5. Pests and diseases (rachis blight, anthracnose, downy mildew)