Why do the leaves turn yellow?

The article will tell you why the leaves of tomatoes turn yellow, since this issue does not stop worrying many truck farmers.

Often, the leaves begin to turn yellow from the lowest,and not just veins, but the whole leaf. Zoology explains this condition of the plant with a lack of nutrients, namely, nitrogen. How to predict this and how to help if the yellowness of the leaves has already appeared?

Seedling

It begins with seedlings. If it has outgrown before planting in the greenhouse, as indicated by the roots intertwined with each other in a dense lump, then such seedlings will become very bad. Because overgrown roots will die before transplantation, which will not be noticeably visible, and then the leaves will turn yellow, and to the very top. At the same time, new roots will grow, and fresh leaves will appear. The reason why yellow leaves in a tomato in this case is such that the old roots can no longer supply the first few leaves with the necessary amount of nutrients, and they die. At this time, the healthy roots of the plant supply all that is needed to the newly grown leaves.

Transplanting

It is necessary to sow seeds not earlier than agreedtiming and then do not keep the seedlings long on the windowsill. If you can not land in time, then try to make at least three liters of soil for the tomato bush so that the roots are not damaged.

Spraying

To restore root nutrition, withyellow leaves, it is necessary to prepare a weak saline solution, 1%. To do this, take 10 grams of fertilizer (phosphates, chlorides, nitrates, etc.) per 1 liter of water. Fertilizer can be in both dry and liquid form. Stir thoroughly and the solution is ready for spraying. The main thing to remember is that the concentration should not be greater, in order to avoid burns of the leaves. Spray should be 1-2 times a day, for the entire time of plant restoration. At the same time yellowed leaves can be removed, since they are no longer reanimated. In a week, a maximum of two, the development of a tomato bush will go back to normal.

In a situation where all conditions for landing werebut still the question arose as to why the leaves turn yellow in tomatoes, it can be assumed that the reason is damage to the roots by harmful insects or lack of soil temperature. In this case, there may still appear a bluish color in the stalk and leaves. And it is possible that the plant can not take root because of excessive heat and dry air. In such situations tomatoes will also be shown spraying with a 1% solution prepared from fertilizer and water.