Instructions for treating tomatoes against late blight with iodine and boric acid: we fight the disease quickly and effectively

Growing tomatoes is a labor-intensive process that requires improving the nutritional composition of the soil. Poor care of plants often leads to fungal diseases. In this article we will tell you how to process tomatoes. from late blight with iodine and boric acid.

The benefits of boric acid and iodine for tomatoes

Iodine and boric acid are not used in large quantities.

Enough small dose to tomatoes:

• strengthened the immune system;
• did not accumulate nitrates;
• formed more ovaries;
• resisted negative environmental influences;
• were not attacked by bacteria and fungi;
• bore fruit abundantly.

If you use such drugs incorrectly, you will get the opposite result.. Often the plant turns yellow, sheds its leaves, and dies.

The principle of action of boric acid and iodine in the fight against late blight

Iodine and boric acid are harmless to vegetables. They efficiently disinfect soil and plantings and prevent the development of late blight.

Gardeners It is recommended to use the preparations in the form of fertilizing specifically in the soil. A sick plant transforms in 2-3 days, as the immune system is strengthened and flowering accelerates.

Reference. Experts continue to debate the effectiveness of iodine and boric acid. They have been proven to help improve resistance tomatoes to late blight. But many gardeners insist on destroying infected plantings, considering this the only correct method in the fight against fungus.

How to prepare a solution of iodine and boric acid

Preparation of the product involves maintaining the proportions. Often auxiliary components are added to the main components, for example, soda or ammonia.

Proportions and instructions

Required:

• 1 tsp. 1% boric acid;
• 30 drops of iodine;
• 10 liters of water.

Components mix according to the following instructions:

1. Dilute boric acid in warm water. A glass is used for these purposes.
2. Add the resulting solution to 10 liters of water.
3. Cool the mixture until it is cool.
4. Iodine is added to the finished suspension.

Tomato processing begins with mid-season.

Reference. Gardeners recommend adding 100 g of garlic to the solution. Before use, the mixture is filtered.

Soda solution

Dilute 5 tbsp in 10 liters of water. l. soda, pre-prepared boron mixture (1 tsp per 1 tbsp warm water). Then add 30 drops of iodine and infuse the solution for 2 hours.

The components will slow down the development of fungus, will help the fruits develop normally.

With added ammonia

This the solution will not only protect tomatoes from late blight, but also help fight pests. To 10 liters of water add 2 g of boric acid and ammonia, 2 tsp. iodine and 1 tbsp. ash.

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How to process tomatoes

Plants are treated by applying solutions at the root or spraying. Be sure to follow the recommendations and take into account the frequency of treatment.

Processing instructions

The process technology is as follows:

1. The plants are first inspected for diseased shoots. Affected areas are removed and burned.
2. Water the plantings with clean water. Then apply 0.5 liters of solution under each root.
3. Spray the above-ground parts of tomatoes only in dry weather. If the bushes are in a greenhouse, ensure high-quality ventilation after each procedure.
4. Treatment is performed in the morning or evening. Otherwise, burns will appear on the leaves of the plant.

When treating tomatoes, be sure to treat the potatoes nearby.. Crops are susceptible to the same diseases.

Timing and frequency of procedures

For prevention, 3 scheduled treatments of tomatoes are performed:

• before flowering, when the buds began to form;
• during the flowering period;
• at the beginning of fruiting.

If late blight has already been noticed, the bushes are sprayed every 10 days. Severely affected tomatoes cannot be treated. They are disposed of away from plantings, and neighboring bushes are sprayed with the working solution.

Beginners make a lot of mistakes at this stage.. Most common:

1. Watering plants at the peak of disease activity. This makes the situation worse because the fungus thrives in damp environments.
2. The use of chemicals in parallel with iodine and boric acid. Often, a combination of various means leads to the death of tomatoes. After processing, they accumulate poisons and begin to turn yellow and rot.
3. Boric acid in powder form does not completely dissolve. The granules remaining in the mixture cause burns on the leaves.

Tips and tricks from experienced farmers

Next recommendations will help reduce the risk of the appearance and development of late blight:

1. Compliance with crop rotation rules.It is not recommended to plant tomatoes after and near eggplants, potatoes, and peppers. Re-planting of the crop in the same place occurs no earlier than after 4 years.
2. Choosing a sunny area for planting tomatoes. Dark, poorly ventilated greenhouses or beds will become a source of fungus development.
3. Improving soil composition. If it contains a large amount of lime, peat is added to the hole and sand is sprinkled on top. Another option is to pour onion peels into the hole.
4. Compliance with the planting scheme. Closely spaced plants block the penetration of sunlight. This creates favorable conditions for the development of fungus. The distance between bushes is 50 cm, between rows - 70 cm.
5. Timely removal of shoots and unnecessary foliage. Very often fungal spores appear on them.
6. Compliance with the rules of fertilizing with nitrogen fertilizers. Components are added only in the first half of the growing season. Then they provoke the appearance of late blight.
7. Prepare a solution of boric acid and iodine only outdoors in warm, windless weather. For spraying, pour the prepared suspension into a sprayer and make sure that the product falls on the plants in small drops. During the procedure, protective equipment is used.

Conclusion

Treating tomatoes with boric acid and iodine is a good way to prevent late blight and increase yield. But such drugs are not capable of completely destroying the fungus, but are suitable as effective prevention.

It is better for beginners to learn only 2 rules: it is important to maintain proportions when preparing the solution and follow the processing instructions.