To get a good harvest of grapes , you can not do without underfeeding. After all, even well-prepared soil, in which grapes are planted, in 3-4 years is poorer and can no longer provide the bush with all the substances necessary for growth and fruiting.
The scheme for feeding grapes involves the seasonal introduction of nutrients. Unsuitable time or illiterate use of fertilizers can lead to poor flowering, lack of fruit and unprepared vines for winter.
Autumn feeding of grapes
To vine lignified and well ripened during the winter, and the bush is better to suffer frosts, it is necessary to feed the grapes in autumn after the fruiting, but before the shelter.
Feeding grapes for the winter includes potash fertilizers. In addition to increasing frost resistance, they protect the plant from disease, and in the next season the berries will be sweeter.
Potassium fertilizers are potassium sulfate (free of chlorine), potassium sulfate, potassium chloride or a given substance in the form of salt. All of them have an equivalent effect on the grapevine, but require competent use.
The easiest, cheapest and safest method of fertilizing grapes for the winter is to place the ash under the bush. The most suitable ash will be from burned old branches of grapes or sunflower husks.
Around the bush digs a groove (at least 50 cm from the trunk), in which this fertilizer is applied. Thus it is not washed out by rains and evenly flows to the roots. Once in 3-4 years, it is advisable to add, when digging the soil, the overgrown cow or chicken manure for the renewal of soil nutrient.
Foliar top dressing of grapes
Such top dressing does not replace full-value fertilization, but is only an addition to it. Most often it is combined with sprinkling of leaves from mildew. This must be done four times a season - before flowering, after it, when berries ripen and before harvesting.
Thanks to the fact that all the nutrients are perfectly absorbed through the leaves, the plant becomes less sick and becomes more productive. A mandatory condition for foliar feeding is regularity, and then the result will not take long to wait.