The appearance of yellow spots on tomatoes around the stem may be associated not only with a lack of potassium, as many gardeners often believe. Uneven skin coloration and rough, tasteless flesh can be the result of improper feeding or lack of electrical power for tomatoes.
Some tomato varieties can react to excess nitrogen in the soil when supplied with potassium, which can lead to the formation of rough flesh and also uneven coloration of the fruit skin. The yellow “shoulders” of tomatoes may be characteristic of the variety, but they disappear on the ripe fruits, while the flesh remains juicy.
It is recommended not only to add the necessary nutrients, but also to dose them correctly, observing the proportion between them. During the ripening of tomatoes, the need for potassium in fertilizers should be higher, and after planting the seedlings in the ground, greater emphasis should be placed on phosphorus.
Regular watering with a solution of 1 tablespoon of lemon juice and 1 bucket of water will help the plants absorb the necessary nutrients. Watering should not be abused; Excess humidity and difficult ventilation of greenhouses can negatively affect the digestibility of food.
Poor soil aeration can also lead to rough flesh and yellowish spots on tomatoes. Dense planting can also negatively affect the quality of the fruits: with it, the plants will shade each other.
