In late summer or early autumn, growers are often faced with dark spots on tomatoes, which gradually spread over the surface.This so-called late blight on tomatoes.Methods of dealing with it include the use of certain chemicals, and folk methods of prevention.Consider in detail what is this disease and how to fight it.
blight Late blight is considered a major disease of tomatoes in greenhouses and open field.And in the soil affects the culture of late varieties.This is due to the fact that the favorable conditions for the spread of the disease (the dew drops that occur when the difference of day and night temperatures) are formed in the late summer or early fall.
If you notice spots horticulturists immediately realize that they may have late blight on tomatoes."What should I do?" - They ask a question.First you need to find out whether this is so, because the spots may be in other diseases.
Late blight affects the fruit, stems and leaves.At the edges of the leaves appear brown spots at the bottom - white bloom sporulation.On stems and petioles elongated spots without plaque.Fruits of places covered by a solid brown rot.The source of infection - the affected planting potatoes and oospores, which are stored in the soil on plant debris.
Phytophthora on tomatoes: methods of dealing with the rules of cultivation culture
- Designated tomatoes need to constantly change and the culture of the potato plant, as long as the debate remains in the soil.
- tomato seeds disinfected with potassium permanganate or vitarosom, since they can also be fungus spores.
- tops potato and tomato burned or deeply buried, as disputes are carried on the wind, and are stored in the soil until the following year.
If you are looking for an answer to the question of how to protect the tomatoes from late blight, you should be aware that compliance with these three rules will significantly reduce the risk of disease.Also planted plants need only sturdy, timely care for them and feed: strong tomatoes are less susceptible to late blight.
carbonate in greenhouses is recommended to grow resistant hybrids are formed in 1 stalk without thickening and themselves well ventilated greenhouses.Water the plant when the infection is recommended 1 time per week in the absence of precipitation.
Phytophthora on tomatoes: methods of dealing scientifically
Now available special preparations for spraying crops of tomatoes.Popular products based on hay bacillus - "fitosporin-M", "Baksis", "Alirin-B", "Gamair."If their application is necessary to comply with the instructions supplied.From well known immune stimulators "Immunotsitofit", "Appin", "Zircon".
There are broad spectrum fungicides, which protect against complex diseases.This "Quadris" "Ridomil Gold", "mefenoxam" "Mancozeb" "Thanos" "famoxadone", "Cymoxanil" and others.Copper sulfate is also used, but it is already receding into the past, and does not always help.
Remember that this is an insidious disease that can destroy the entire crop - late blight on tomatoes.The methods of struggle could be to spray plants and observing simple method of farming, such as changing the beds, seed disinfection and the removal of remnants of the potato and tomato.Practice shows that it is enough to strike the fungus culture.
