Many gardeners who grow tomatoes in greenhouses or in the open field on private land, faced with the fact that the leaves on the entire height of the plants are twisted, and the lower turn yellow and die.Seeing this picture, some decide that it is lack of food, others suggest the action of pests, and others - a variety of diseases.Everyone is trying to do something in order not to lose the harvest.In such a situation it is important to establish the cause and not to spray that is at hand, hoping to use the drug all correct.
Recently widespread Fusarium wilt of tomato.The photos in this article show how the results look the action of pathogenic fungi genus Fusarium, which cause the disease.To cut the diseased plant near the root is clearly visible dark ring.Sometimes at the base of the stem appears light gray or white furry coating.
Earlier tomato Fusarium wilt was observed only in areas with hot summers, and now it is manifested in the temperate zones, since these places are increasingly created the conditions for its development.
sources and carriers of the disease are infected seeds, soil and perennial grasses.The spores of the fungus - the causative agent of the disease - long stored in the soil and on the remains of dead plants.If the immune system of plants is correct, the disease does not manifest itself.However, the adverse conditions and stressful situations (sudden changes in temperature, humidity and soil and air, an overabundance of moisture, frost, lack of soil nutrients, etc.) contribute to the development of such diseases as Fusarium wilt of tomato.
result of growing under stressful conditions mentioned earlier is the penetration of pathogenic fungi in the root system, and from there into the adjacent part of the stem of tomatoes.Spread through the vascular system, the fungus affects not only the stalks, but also fruit.At the same time the top of the plants droop, become flabby and leaves turn yellow, wilt and then wither.In some cases there may be a total inhibition of plant growth with the formation of small fruits.Weakened plants subsequently affects bacterial blight, and they die.
tomato Fusarium wilt can occur at any stage of development.On it is accompanied by basal shoots and root rots.Grown up phase of the cotyledons seedlings begin to fade.It happens that apparently healthy tomatoes have a latent infection.In this form, the symptoms manifest in the later stages of development.When the seedlings were healthy, and during the growing season showed signs of the disease, it can be assumed that the contaminated soil.
Before seeding pochvosmes be decontaminated.To do this, use a biological product "Trihodermin."The box size 30x50 his need to make a total of 4 g, to protect seedlings from diseases such as Fusarium wilt of tomato.Treatment at any stage to be ineffective, as prevention is always effective.
to prevent disease in the growing plants need four times per season pour solution of said drug diluted in a ratio of 7 grams per 2 liters of water.500 ml of this solution is required to pour at each plant.Moreover, tomatoes can be sprayed on the leaves drug "Falcon" at a concentration of 1 mg per 3.3 liter of water.
Fusarium wilt of tomatoes - a fungal disease that is almost impossible to fight, and it is easy to prevent.Do you want to get good harvests - not too lazy to carry out preventive measures.
