Growing tomatoes is not easy and troublesome. A capricious plant strives to upset with another unpleasant surprise. Yesterday the bushes were adorned with green tops, and today suddenly yellow spots appeared on the leaves. What is it: a natural reaction to changing conditions, illness, inaccuracies in care? Today I will talk about the main causes of yellowing of tomato foliage and how to help the plant.
Let's figure out what is the reason
A careless attitude to the appearance of yellowness on the leaves of tomatoes can even lead to loss of yield. Therefore, a problem detected in time is already a big plus. Among the main reasons for this phenomenon are:
- mistakes in care or cultivation;
- illness;
- attacks from pests.
Person-dependent factors
Depending on where the tomatoes are grown, the care of the vegetable is also organized. Ground tomatoes, unlike greenhouse ones, are more seasoned. However, weather troubles (rain or frost) affect the condition of the tops. Greenhouses are grown in more comfortable conditions, but here, too, troubles are not excluded.
Watering
Very often, excessive watering or lack of moisture leads to the fact that tomato tops begin to turn yellow. Superficial and too frequent watering of the soil leads to stagnation of moisture in the upper layers of the soil and a lack of it at a depth, at the roots. Therefore, you should remember:
- water the plant at least once a week and very abundantly;
- choose the morning time for the procedure;
- do not forget to loosen the ground between dampenings.
Top dressing
Poor marginal soils lead to nutrient deficiencies in the plant. Regular feeding can partially eliminate this disadvantage. The appearance of yellow spots on the leaves may indicate a lack of elements such as manganese, iron, boron, potassium. Also, with excessive fertilizing with nitrogen-containing fertilizers, the vegetable tops turn yellow. Use complex ready-made formulations for feeding tomatoes.
Excessive sun
It must be remembered that the water that gets on the leaves during watering under the influence of direct sunlight can provoke the appearance of burns. Water the seedlings at the root. In addition, excessive sun exposure is also detrimental to the delicate leaves, so try to shade the plants during the sultry midday hours.
Pest attack
Wireworm, bear, aphid, spider mite - all these pests very often affect tomato seedlings. To combat dangerous parasites, I recommend treating tomatoes in time with fungicidal preparations that destroy not only insects, but also many diseases.
Tomato sores
The most popular diseases of tomatoes, the symptoms of which are yellowing of the leaves, are:
- Cladosporium
The disease affects the plant from the bottom up, there is a slowdown in fruit ripening.
- Alternaria
Leads to darkening of the fruit pulp, the leaves turn yellow, and the stem dries out.
- Fusarium
Difficult to diagnose disease causing shoot death.
- Septoria
Fungal infection that slows down the growth and development of the bush.
How to help a plant
Timely measures taken to eliminate the problem, compliance with the basic agrotechnical conditions for growing tomatoes, and also preventive measures can prevent seedling disease and reduce the negative impact on growth and development vegetable. This requires:
- observe the temperature and water regime, the level of air humidity in greenhouses;
- carry out regular feeding and processing of plants;
- timely prepare the soil for planting, destroy weeds and affected tomato bushes;
- shade soil landings in hot hours.
Sometimes we make a lot of efforts in the struggle for the tomato harvest. The methods described in the article will help keep tomato tops healthy and the fruits tasty and juicy.
Read also: Effective ways to deal with slugs in the garden
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#late blight#tomato diseases#yellow spots on the tops