Latest Key Points for Winter Management of Kyoho Grapes
After winter begins, the leaves of Kyoho grapes fall one after another. At this time it seems that there is nothing much to do, but in fact the winter management of Kyoho grapes is very important, as it affects the flower bud differentiation and yield of Kyoho grapes in the coming year. Below, follow the editor to take a look at the key points for winter management of Kyoho grapes.
1. Apply sufficient base fertilizer
After Kyoho grapes are harvested in autumn, a large amount of nutrients is consumed, so when the leaves fall in winter, sufficient base fertilizer should be applied in time to replenish the consumed nutrients and lay the foundation for a bumper harvest in the coming year. The base fertilizer should be mainly decomposed farmyard manure, supplemented by chemical fertilizer. Generally, 7-8 kg of decomposed organic fertilizer and 10-20 kg of potassium chloride or potassium sulfate are applied per mu. When applying the base fertilizer, be sure not to add quick-acting nitrogen fertilizer.
2. Winter pruning
⟦NL>The pruning of Kyoho grapes is different from that of other grape varieties. Young Kyoho grapes should be pruned lightly and left to grow long, otherwise they will grow vigorously the next year and the phenomenon of flower and fruit drop will worsen. After pruning, the branches and vines should be promptly tied to the trellis according to the principle of shaping the tree by form. Do not wait until spring when growth begins to tie them.3. Deep plowing of the soil
When applying the base fertilizer, the soil can be deep plowed and ripened once, which can loosen the soil and promote root growth. At the same time, the drainage system should also be properly arranged. When deep plowing the soil, it is best to spread some organic fertilizer to improve the soil, which is extremely beneficial to root and plant growth. For relatively heavy clay soil, it should be improved by deep plowing. If conditions permit, some medicinal residues, rice straw, husk residue and the like can be placed during deep plowing, which can not only increase the looseness and air permeability of the soil, but also inhibit the growth of weeds.
4. Clean the orchard
The main task of cleaning the orchard is to clear away fallen leaves and weeds and burn them in a centralized manner. Note that fallen leaves cannot be used as fertilizer, so as to avoid increasing the base number of pests and diseases in the soil. Then spray the whole orchard with 5 degrees Beaume lime sulfur mixture, spraying the Kyoho branches and vines, trellis poles and ground comprehensively. At the end of February when buds sprout, spray once more with 3 degrees Beaume lime sulfur mixture. This has a twice-the-result-with-half-the-effort effect on disease prevention and control.
5. Winter irrigation
For orchards with severe drought or where the applied organic fertilizer is about to seep dry, winter irrigation can be carried out. This speeds up the dissolution and moisture of the organic fertilizer, accelerates fertilizer penetration, and can also keep the soil moist and increase the sprouting rate. For winter irrigation, furrow irrigation is recommended. After the water spreads evenly over the bed surface, let it seep dry naturally. For plots with a relatively high groundwater level, winter irrigation is not necessarily needed.
The above are the key points for winter management of Kyoho grapes. We hope they can help you. If you want to learn more related knowledge, please stay tuned to us.