Tomatoes have great nutrition value and high flavoring advantages. They are used for preparation of various dishes and conservation. However very often at cultivation tomato it is possible to face such problem: leaves at tomato turn yellow.
Yellowing of leaves on tomatoes can be often connected with various factors: environment, various diseases, shortage of microelements, insects wreckers or wrong care for plants.
1. Environment significantly affects color of leaves on tomatoes. First of all, it can be connected with the lowered air temperatures in the open ground or on the contrary the increased temperatures in the greenhouse when plants simply burn down. The timely covering film in cold days or the correct location of the greenhouse, the long party on the East or the West can help with this situation.
2. Some diseases also lead tomato to yellowing of leaves. Fuzariozny withering and brown spottiness are distinguished from them.
The activator of fuzariozny withering is the soil mushroom which gets into fabrics through root system and corks the carrying-out vessels. Leaves on plants begin to turn yellow, stalks wither, the root system rots. For prevention of this disease it is regularly necessary to carry out scarification, to change sites of cultivation tomato. If plants nevertheless were infected, then they can be processed solution of margantsovokisly potassium. Also at initial stage tomatoes spray with Fitosporin. Among folk remedies the use of infusion of horse sorrel and nettle is possible.
The brown spottiness is also fungal disease. Usually it strikes leaves in phase of blossoming or the beginning of fructification. At first it is shown by yellowing of the lower leaves. Preventive actions, first of all, include airing of the greenhouse and posypany soils peat or humus in the open ground. At the first symptoms of disease tomatoes spray with oxychloride of copper or polikarbatsiny. It is also necessary to introduce fertilizers with the content of copper and manganese in time.
3. The shortage of nutrients and microelements is one more reason of yellowness of leaves on tomatoes. Generally it concerns nitrogen, potassium, magnesium, iron or sulfur. For the solution of this problem tomatoes feed up complex fertilizers. Also it is possible to bring the crushed egg shell in the soil, to water with iron vitriol, to put rusty nails and copper wire under bushes.
4. Insects wreckers annually cause huge damage to gardens and kitchen gardens. Leaves tomato begin to turn yellow when on them the ordinary web tick or plant louse is got. For fight against these wreckers it is important to delete weeds from beds in time, to carry out scarification and its digging up to the autumn period. From folk remedies bitter wormwood and mustard infusions are ideal. If normal measures do not help, processing is required by chemical medicines, such as Antikleshch or Antitlin. Before landing it is necessary to water the soil with potassium permanganate solution.
5. Leaves on tomatoes turn yellow and at the wrong care for plants. It is important to remember that tomatoes are culture which does not demand the strengthened moistening of the soil. They perfectly transfer lack of moisture and water them not more often than once in three-four days. Also it can be connected with the bad illumination of the place of growth tomato. They love sunlight and willingly react to any climate changes. Still it is impossible to allow excessive thickening tomato, in time to tear off stepsons and to delete deciduous cover. Very often leaves on tomatoes turn yellow at damage of root system during jumping of plants or scarification under them. In early autumn they change the color already on more natural cause – aging and usykhaniye of plants begins.
If it is not possible to understand the reason of yellowing of leaves on tomatoes, then it is regularly necessary to carry out all preventive actions for leaving and fertilizer of plants, both in the greenhouse, and in the open ground.