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Apical rot of tomato

Apical rot of tomato


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Top rot tomatoes: remedies, treatment and causes. All the information to solve the problem of black-tipped tomatoes. Natural remedies, fertilizers and calcium intake.

Theapical rot of tomato, as well as that of peppers, courgettes and other vegetables, is a very common problem that causes huge crop losses. On this page we will see the causes of this problem and the possible interventions to be implemented to avoid it.

Regarding thetomatoes, theapical rotmainly the elongated or rounded varieties (San Marzano, Cuore di bue ...) however, even smaller varieties can be affected by this problem. I myself have had problems withapical roton datterino tomatoes, a problem that I solved by contacting an agricultural consortium.

Apical rot of tomato, the causes

According to most sources, theapical rot of tomatoit is caused by nutritional deficiencies in the soil, especially a lack of calcium.

In fact, to solve the problem, the agronomist of the consortium recommended targeted fertilizations.

There are few agronomists who link theapical rotto an entomophilic phytopathology caused by a hymenopteran insect of the Vespidae family. This parasite would choose the apex of thetomato(or other tender vegetables) for its oviposition activity.

There is no scientific evidence for this theory, however, certainly a lack of calcium makes the vegetable more exposed to attack by various parasites, including these hymenoptera. According to this "new theory", The hymenoptera would choosetomatoesand other vegetables both for the ease of penetration and for the temperatures of the same vegetable which would favor the hatching of the eggs. Unfortunately, following hatching, the larvae would begin to develop at the expense of the vegetable and thus theapical rot.

How many of you have a vegetable garden and have come across the problem of apical rot? Have you ever tried to take a good look at what it is? I do….

By inspecting the apical rot on my tomatoes, personally, I have never found any larva, nor by examining the skin of the tomato I have noticed the nest of the oviposition. For these reasons, I believe that the most accredited theory is that linked to the nutritional needs of tomatoes.

Other theories state that thecauseof theapical rotof the tomato lies in several concatenating factors such as:

  • Discontinuous irrigation
    Periods of drought alternating with excessive wetting ... in fact, even non-constant irrigations cause a bad absorption of calcium by the plants!
  • Calcium deficiency
    When calcium deficiency has been present for a long time, yellow leaves can be observed, especially younger leaves. So if you have a problem with apical rot of tomatoand notice a few tender yellowed leaves, you should provide a quick fertilization with calcium.
  • Basic pH reaction
    Too alkaline soil with a pH equal to or greater than 7. Can happen with the tomato grown in potsand irrigated with water from the fountain, rich in limestone. Irrigate with rainwater (when possible) or add half a cup of vinegar to the irrigation water.
  • Shaded display
    Incorrect sun exposure could increase the risk of apical rot, if the tomatoes get little light, move the pot!
  • Unsuitable fertilizers
    If you have fertilized the soil with fertilizer for flowering plants, you may have slowed down the absorption of calcium.

Garden centers are full of calcium-based fertilizers; make sure you choose an exclusive one that does not provide other micronutrients. You can then use a broader spectrum fertilizer when the situation has stabilized. An excellent supply of calcium is given by calcium nitrate.

Generally it is enough to add 3-4 grams of calcium nitrate for every square meter of cultivated area. For the purchase of calcium-based fertilizer (more properly, calcium nitrate), you can consult the Amazon "Calcium Nitrate" page and choose the format and offer that best reflects the quantity of plants to be fertilized. Calcium nitrate can be stored for very long periods, just be careful when opening the package or transfer it to a large hermetically sealed jar.

Fertilizer for tomato

To prevent the problem ofapical rotand above all to support healthy plant growth, it is advisable to administer specific fertilizers for tomatoes.

I have been using fertilizer for years now "Maxicrop.". It is a natural product that allows the absorption of calcium by the plant and is recommended precisely to buffer and prevent damage caused by water imbalances, alkaline pH values, asphyxiated soils ... and all those factors that cause a poor and limited assimilation of nutrients by the plant. The same product is indicated if cracks and cracks form in tomatoes.

I absolutely do not want to advertise the product so I invite you to read what are the nutritional needs of the tomato and choose one fertilizer that most satisfies them! :) To find out which nutrients are essential for the optimal development of the tomato, I refer you to the page:fertilizer for tomatoes.


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