The use of vitriol when spraying grapes in autumn will help get rid of various diseases and infections. The main thing is to be careful, because in large doses it can cause irreparable harm not only to the vineyard, but also to people.
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The use of copper sulfate
Copper sulfate itself is a fungicide that must be used strictly in accordance with the instructions. To properly prepare the solution, you will need:
- 50 ml of copper sulfate;
- 200 ml of warm water;
- bucket with a capacity of 5 liters.
Vitriol is diluted in warm water. Stir vigorously for best results. The resulting mixture is poured into a bucket, which is immediately filled with running, clean water until it is full.
IMPORTANT! It is necessary to use the resulting solution immediately, since over time all its properties are lost.
Processing the vineyard with this solution should be carried out in dry, calm weather. For its effective effect, it must remain on foliage and vines for at least 4 hours. Therefore, in cloudy weather with the probability of precipitation, spraying is not carried out.
Spraying grapes with copper sulfate, you must follow safety precautions. Work is carried out in a respirator, goggles, gloves and with a covered head. The container that contained the solution should not be used for cooking or storing drinking water.
Spraying with iron vitriol
Spraying grapes with iron vitriol (melanteritis) helps not only get rid of fungal diseases, but also replenish the iron deficiency in the plant. The following symptoms may indicate a lack of iron in the vineyard:
- small amount of harvest;
- small vines and grapes;
- the vineyard does not sprout new shoots;
- disfigured leaves appear, leaves with spots.
Autumn processing is carried out at the end of the harvest, before the onset of cold weather. To prepare a solution for spraying, you will need 30 g of melanterite and 10 liters of water. Stir everything intensively and use immediately so as not to lose the important properties of the solution.
IMPORTANT! Do not increase the amount of melanteritis by 10 liters of water. The resulting solution will be too strong and will burn the foliage around the vineyard.
The use of ferrous sulfate is so effective that it allows you not to worry about the return of diseases for several years.
With the help of melanterite, you can get rid of moss or lichen from the bark. To do this, already 500 g are diluted in 10 liters of water. The whole bush of grapes is sprayed, except for fruits and foliage. After 2 weeks, spraying is repeated to fix the result.
Autumn processing of the vineyard with copper and iron sulfate, according to reviews, is one of the most powerful and effective methods of preventing and treating diseases. Many latent infections that could overwinter with grapes, and attack it in early spring, will be destroyed.
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Read about watering grapes in the summer in the following article:Watering grapes in summer is the key to a good harvest in autumn