Leaves at tomatoes turn yellow for various reasons, frequent it is disturbing sign. So, it is important to find out why it occurs and to save plant from this illness.
Adaptation of tomatoes after change
It is often possible to notice that the lower leaves of the tomatoes which are recently landed in soil turn yellow. It is natural process, so tomatoes react to stress from change. In that case yellow lower leaves usually fall down. If it does not occur, it is necessary to cut off them accurately. It will allow nutrients to reach young top stepsons rather.
Diseases of tomatoes and wreckers
Suddenly turning yellow leaves of tomatoes can signal that they were affected by any disease. It can be fizarioz, mosaic, phytophthora and others. At suspicion on any of diseases, it is important to carry out timely processing of plants. For these purposes it is possible to use suitable medicines, for example, of Pentafag, Mikosang, Fitosporin.
In the presence of wreckers, leaves of tomatoes can also turn yellow. Plant louse, the medvedka, the wireworm and some other insects can seriously do much harm to tomatoes. Therefore if the reason is in them, then it is necessary to bring urgently wreckers any available means.
Surplus or lack of moisture
Insufficient, as well as excessive watering can become the reason that leaves of tomatoes turn yellow. At the shortage of moisture they are also twisted and wither. When moistening superfluous, can not be enough for tomatoes nitrogen that also leads to yellowing. Therefore it is important correct to carry out watering of tomatoes and their fertilizing.
Damages of root system
The weakened root system of tomatoes can provoke yellowing of leaves. Wreckers can damage roots, we can also accidentally damage them at change of tomatoes. Weak seedling can have weak, undeveloped roots that will affect further quality of all harvest. Therefore in this case it is possible to use various strengthening complexes for root system.
Shortcoming or excess of nutrients
Often the turned yellow leaves of tomatoes can signal about the shortage of nitrogen. In that case tomatoes feed up urea, mullein or bird's dung. Here it is important not to go too far as the excess of nitrogen can provoke necroses and dying off of leaves.