Why do tomatoes not turn red in the greenhouse

Often, gardeners are faced with such a problem as the slow ripening of tomatoes in greenhouse conditions. The following picture can be observed: reddening of the lower part of the vegetable, in the presence of a yellow or even green top. Why this happens will be discussed further.

Reasons why tomatoes do not turn red in the greenhouse

Reasons why tomatoes do not turn red in the greenhouse

There are several factors that affect the maturity of the crop:

  • in the greenhouse there is no optimal temperature indicator – this leads to a violation of the synthesis of lycopene. As a result, the tomatoes become an unusual orange color, which after some time remains unchanged;
  • Excess sunlight is also harmful to this crop. Under the influence of a large amount of sunlight, tomatoes simply bake, and do not ripen in the sun;
  • an increased indicator of humidity and sharp temperature fluctuations contribute to the favorable development of plants, and then it is worth monitoring the presence of the desired microclimate in the greenhouse all the time;
  • when planting seedlings, it is necessary to observe the distance between the shrubs in order to prevent excessive crowding. It is optimal to plant bushes at a distance of at least 0,35 m. With a decrease in this indicator, the fruits do not ripen well;
  • the abuse of nitrogen fertilizers leads to late ripening of tomatoes. Additionally, there is a bronze tint on the leaves. The same thing happens if tomatoes receive less potassium;
  • in the presence of small and pale tomatoes, you need to deal with the climatic conditions in the greenhouse. Plants must be protected from direct sunlight and sufficient lighting in the greenhouse.

What to do than help tomatoes

What to do than help tomatoes

The main reason for the poor reddening of the crop is the lack of proper climatic conditions and the characteristics of the variety. Hybrids have the most uniform ripening and coloring of tomatoes, and therefore much depends on the correct choice of varieties.

Experienced gardeners use a number of proven methods to speed up ripening, there is nothing complicated in such procedures:

  • ensuring good microclimatic conditions in the greenhouse. Tomatoes should receive sufficient sunlight. Extra leaves are removed, and the shoots are turned so that they are not in shading. To fix the desired position of the plant, it is recommended to tie it up;
  • iodine is used for foliar feeding, the product is diluted at the rate of 35 drops per 10 liter bucket of water. The solution is used to spray the leaves. After several sessions of top dressing, the ripening of tomatoes is accelerated;
  • removal of excess inflorescences, leaves and stepchildren. Pinching or pruning of the top of the tomato bush is carried out to stop the growth of new shoots. Thanks to this procedure, the consumption of nutrients is reduced. Without removing excess shoots, a small crop is observed, which does not always have time to ripen;
  • the use of alcoholic injections, this technique also significantly speeds up the maturation process. Here you will need to use a syringe and vodka, for one tomato the consumption of alcohol is 0,5 ml. After 14 days, a complete reddening of the crop is observed. It is worth noting that the taste of tomatoes does not suffer from this;
  • if sudden cold weather has come and it is not possible to maintain the microclimate necessary for tomatoes in the greenhouse, then it is recommended to dig up the bushes and move them to a more suitable place, the supply of nutrients should be enough to complete the ripening;
  • often tomatoes do not blush for a long time due to late blight, diseased plants may not ripen at all, they, on the contrary, turn black. Garlic solution or other means are used as preventive measures.

Prevention

Prevention

The main preventive measure will be the creation of an optimal microclimate in the greenhouse. Tomatoes ripen well in moist soil, but at the same time, plants do not like the high humidity in the room at all.

Due to the lack of illumination, certain problems also arise with the ripening of tomatoes, and therefore it is necessary to create suitable conditions in a timely manner. An alternative option is auxiliary lighting devices, thanks to which you can increase productivity.

The following activities are included in the care of a greenhouse culture so that it feels good:

  • periodic removal of weeds;
  • ensuring regular watering;
  • carrying out stepsoning;
  • implementation of the garter as needed;
  • the introduction of mineral and organic dressings.

Useful advice. So that the skin of tomatoes does not start to crack, it is recommended to water them in several stages.

It is possible to protect plants from a number of ailments (gray rot, root rot, mosaic, brown spot, late blight, etc.) by systematic spraying of plants, the correct selection of friendly tomato varieties and control over soil moisture.

How to feed tomatoes

How to feed tomatoes

To get a bountiful harvest, plants need to be fed in a timely manner. After the seedlings are planted, experts advise using complex fertilizers with the exact dosage of components such as potassium, nitrogen and phosphorus.

During the beginning of flowering, a special dressing for tomatoes “Sudarushka” is used. It does not contain chlorine, but it has the whole complex of useful substances necessary for the plant.

When the formation of the ovaries begins, foliar top dressing should be carried out. Many gardeners use wood ash for this business. Rather, a solution is made on its basis according to the following recipe:

  • ash – 2 cups;
  • hot water – 2 liters;
  • mix thoroughly and leave for 48 hours to infuse;
  • drain the sediment, add water to make 10 liters.

The resulting solution is used to treat shrubs in the evening or on a cloudy day to spray the leaves. They must be dry.

When fruiting occurs, superphosphate is used for top dressing. The agent in the amount of two tablespoons is diluted in water – 10 liters, potassium humate is also added – 1 tablespoon. It is used as root top dressing at the rate of 1 liter per plant.

Useful Tips

Useful Tips

Based on the observations of gardeners, then in plants there is a sharp activation of all forces if there is a threat of a mechanical property:

  • you need to make a through cut in the stem part or pull it slightly using copper wire. Due to the resulting deficiency of nutritional components, the rapid reddening of tomatoes and their ripening are stimulated;
  • you can also apply a rather harsh technique, which consists in the fact that the shrub is slightly pulled out of the ground until a slight crackle of torn roots is heard. A small breakage of adventitious roots leads to a restriction in the supply of nutrients to the shrub. This will force the tomato to carry out the activation of forces for the ripening of the crop;
  • some gardeners, using a toothpick, make several punctures in the area of ​​uXNUMXbuXNUMXbthe stalk of a green tomato. Such a tool serves to stimulate pigmentation;
  • another technique is a more humane remedy. You need to take a ripe tomato, put it in a plastic bag and put it on a brush where there are green tomatoes. The opening of the bag is tied with a soft fabric ribbon. After a few days, synchronous reddening of the unripe crop begins.

If the tomatoes do not turn red, three ways to make the tomatoes ripen quickly – video

Why tomatoes do not turn red – video

As a conclusion, we can say the following: as you can see from the article, there are many reasons why tomatoes do not turn red in the greenhouse. The main thing is to understand the essence of the problem and try to solve it. Tomatoes need a suitable microclimate for good yields, and therefore it is worth paying close attention to what is happening in the greenhouse.

Anna Evans

Author-editor

View all posts by Anna Evans →
Exit mobile version