2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38
Late blight is an insidious and dangerous disease that affects both leaves and fruits of plants. A particularly risky period for garden and horticultural crops is the end of May - early June and August - September. At this time, there is a sharp change in day and night temperatures, and also, which is very much to the liking of fungal infections, there is increased humidity due to morning fogs and frequent rains. What can you do to protect your beds from infection and not lose your harvest?
We save the harvest from late blight
Late blight is more dangerous than others for nightshades. Most often tomatoes and potatoes suffer from fungal infections. But late blight also develops on vegetable peppers, eggplants, and strawberries, as well as other garden plants, can become infected. This is a common problem for both garden beds and garden plantings.
And if at the end of the season you found on your beds with tomatoes that the specks characteristic of late blight began to appear on the fruits, you need to urgently take action.
What to do so that all the work during the summer does not go down the drain:
• ripe tomatoes must be urgently collected before the fungus has reached them, but before eating or storing them for storage, treat them with hot water;
• urgently apply biofungicides with irrigation for those plants on which it is undesirable to harvest the crop and it needs some more time to ripen.
Prevention of phytophthora
Anyone would agree that it is better to try to prevent the disease than to deal with its consequences. Therefore, it is always wise to prevent late blight.
Phytophthora is spread through contaminated seeds and through contaminated soil. Therefore, before sowing, the seeds must be treated. And the soil should be disinfected by watering with biofugungicides that contain hay sticks. It is a natural enemy of the late blight pathogen, and it does not harm the soil.
It is necessary to treat the soil mixture in which the seedlings grow with biofungicides, as well as the soil in the greenhouse or in the open ground, where the seedlings will then move to a permanent "registration".
In addition, it is also advisable to periodically water the seedlings with a solution of biofungicides. There is a recommendation to treat the tomato plant with fungicides when the first brush appears. But if you want to use biological preparations, and be sure of the result, then experts advise to carry out such treatment throughout the season and at least once every two weeks.
Features of the prevention and control of late blight in tomato beds
Fungal diseases manifest themselves in all their "glory" when conditions such as heat and high humidity are combined. Therefore, when planting, it is important not to thicken the plants so that they are well ventilated. And tomatoes need to be watered at the root - not very often, but abundantly. And try not to wet the leaves.
However, in order for biofungicides to work effectively, they need to create special conditions. Namely - to ensure that the soil does not dry out and is moist enough for the life of the hay stick. But this did not create increased air humidity. It is very easy to achieve this in one simple trick - mulching. Such a layer will prevent the rapid evaporation of moisture from the soil and at the same time protect against high humidity in the greenhouse.
Another point that gardeners can forget about is the airing of the greenhouse. Thanks to this, condensation does not collect on the walls, windows and doors and moisture does not rise. One thing to remember in August is not to open the greenhouse too early in the morning. Wait for the outside air to warm up enough. And don't forget to close your greenhouse when the temperature drops.
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