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Why tomatoes sometimes turn black
Tomatoes are one of the vegetable crops that have long been loved by summer residents. They are grown in almost every garden, in open ground and greenhouses. Each experienced gardener has his tricks to help get a generous harvest.
But sometimes it is not possible to grow juicy and useful fruits without problems. At the moment when, it would seem, it remains only to harvest, you suddenly find that the bushes have begun to dry, and the immature still tomatoes blackened.
Why is this happening? Experts say that the cause is usually due to improper care of plants or diseases. To prevent the problem, you need to understand the causes of blackening of the fruits.
Inspection of damaged fruits will accurately establish the cause of the appearance of black spots. It is necessary to pick the tomato with stains and cut it in half at the place of darkening. If there is no juice in the place of spoilage, and the pulp is noticeably compacted, then we are talking about dry-type top rot.
This disease develops due to excessive salinity of the soil. The reason may be too frequent use of fertilizers or excessive concentration. In this case, it is recommended for some time to abandon any feeding and fertilizers to give the land to recover, or to plant tomatoes in a new place, changing the dosage of fertilizers.
The cause of top rot can also serve as improper watering. With a lack of moisture during the period of active development and the beginning of fruiting, the plant experiences water stress. As a result, the leaves begin to pull moisture on themselves, including taking moisture from the fruit. That's what causes rot.
During the years of breeding nightshade tomatoes with increased resistance to top rot were obtained. These include varieties "Astrakhan", "Moryana", "Lyana", "Gruntovy Gribovsky 1180", "Lia", "Lunny", "Rychansky", "Akhtanak".
Any varieties of tomatoes require careful observance of all the rules of care. Even pits when planting seedlings need to dig to a certain depth, which can vary depending on the variety. For example, if the wells are small, the roots of the plant can come to the surface, which can also lead to blackening of the fruit before ripening.
Diseases leading to blackening of the tomato fruit also get sick, as do people. They can become infected from surrounding plants. The causative agents of diseases can get on the fruits with wind, compost, can simply be in the ground.
As a preventive measure, experienced gardeners warn against planting tomatoes in the same place for several years. The tomato area needs to be updated regularly. This will eliminate soil depletion.
Tomatoes are not recommended to be planted in places where potatoes grew before them, these plants consume the same substances from the ground, and also suffer from the same diseases, phytofluoro is especially dangerous in this regard.
It is necessary to properly divide the space into beds, ensuring a sufficient distance between them. The ideal interval is 30 centimeters. Between the rows it is worth alternating the distance of 30 and 70 centimeters, then the plants will have enough nutrients.
Feeding should be done in exact dosages, because oversaturation with certain minerals leads to blackening of the fruits, leaves and stems of tomatoes. It is necessary to provide sufficient illumination, it is also desirable that the bed is blown by the wind. Watering should be carried out not with cold, but warm water, under the root, and not on the leaves. Shoots should be tied, and damaged and old leaves should be removed in time.
What to do if the tomatoes have turned black? If, despite all preventive measures, tomatoes still begin to turn black, it is urgent to save the crop. Choose one of the cloudy days and spray tomato bushes. For this, different compositions are used - garlic, kefir-water, chloride. All of them protect healthy plants from fungal spores.
Watering plants must stop. Not much affected fruit should be removed, treated with hot water at temperatures up to 70 degrees and laid out for ripening. Bushes and leaves damaged by the disease must be burned at the stake.
Thus, blackening of tomatoes can occur due to improper care, as well as due to diseases. If you apply fertilizers correctly and competently care for plants, you can minimize the risks and get an excellent harvest of juicy and ripe tomatoes. If tomatoes are sick, you need to react immediately.
August is the time to harvest tomatoes for the winter. Today we will tell you how to prepare sweet pickled tomatoes 6 different ways. Try this season to surprise loved ones with really tasty tomatoes!
Today we learn more and more about the benefits of tomatoes, but, unfortunately, we cannot forget about a number of contraindications and hidden dangers for the human body. "Site" Tells who and why to limit the use of these juicy berries.
Most people know about the delicious tomato sauce "Marinara". However, in order to prepare it, you need to ride for several hours over the boiling mass, constantly stirring it. But there is a secret, thanks to which the preparation of tomato sauce will not take any effort or time. The famous chef Justin Chaple shows in his video how to do it.
But sometimes it is not possible to grow juicy and useful fruits without problems. At the moment when, it would seem, it remains only to harvest, you suddenly find that the bushes have begun to dry, and the immature still tomatoes blackened.
Why is this happening? Experts say that the cause is usually due to improper care of plants or diseases. To prevent the problem, you need to understand the causes of blackening of the fruits.
Inspection of damaged fruits will accurately establish the cause of the appearance of black spots. It is necessary to pick the tomato with stains and cut it in half at the place of darkening. If there is no juice in the place of spoilage, and the pulp is noticeably compacted, then we are talking about dry-type top rot.
This disease develops due to excessive salinity of the soil. The reason may be too frequent use of fertilizers or excessive concentration. In this case, it is recommended for some time to abandon any feeding and fertilizers to give the land to recover, or to plant tomatoes in a new place, changing the dosage of fertilizers.
The cause of top rot can also serve as improper watering. With a lack of moisture during the period of active development and the beginning of fruiting, the plant experiences water stress. As a result, the leaves begin to pull moisture on themselves, including taking moisture from the fruit. That's what causes rot.
During the years of breeding nightshade tomatoes with increased resistance to top rot were obtained. These include varieties "Astrakhan", "Moryana", "Lyana", "Gruntovy Gribovsky 1180", "Lia", "Lunny", "Rychansky", "Akhtanak".
Any varieties of tomatoes require careful observance of all the rules of care. Even pits when planting seedlings need to dig to a certain depth, which can vary depending on the variety. For example, if the wells are small, the roots of the plant can come to the surface, which can also lead to blackening of the fruit before ripening.
Diseases leading to blackening of the tomato fruit also get sick, as do people. They can become infected from surrounding plants. The causative agents of diseases can get on the fruits with wind, compost, can simply be in the ground.
- Phytophthorosis
Phytophthora infestans is a simple fungus with a phenomenal ability to reproduce. This “harvest eater” can reduce the yield from 10 to 50%, and in some cases completely destroy.
Phytophthorosis develops especially quickly in rainy, damp weather. At first, the disease appears on the leaves of tomatoes: their upper part is covered with brown spots, and the lower part is covered with a gray coating. Gradually, the leaves turn black, and then the spots begin to appear on the fruits.
Phytophthorosis is most dangerous in July-August. After all, at this time there are large temperature changes and abundant dews fall out. The appearance of phytophthora can cause too much watering. In this case, you should abandon overhydration and treat plants with Bordeaux mixture. - phomosis
This disease damages only the fruit. Tomatoes turn black near the peduncle. From it, the disease spreads deep into the vegetable. As a result, the tomatoes fall off without ripening to the end. - macrosporiosis
Another common one. tomato fungus. At the initial stage, signs of damage are noticeable on the lower leaves: rounded dry brown spots appear with clear outlines and a characteristic concentric pattern.
Gradually, the fungus spreads to the stems and upper leaves. Infected stems have brown spots of elongated shape. Then rounded depressed spots appear on the fruits.
Soon the disease covers the entire bush, the leaves twist and die. Developing, the fungus begins spores. The spores of the pathogen winter in the soil and on the remains of plants and remain viable for more than 3 years.
As a preventive measure, experienced gardeners warn against planting tomatoes in the same place for several years. The tomato area needs to be updated regularly. This will eliminate soil depletion.
Tomatoes are not recommended to be planted in places where potatoes grew before them, these plants consume the same substances from the ground, and also suffer from the same diseases, phytofluoro is especially dangerous in this regard.
It is necessary to properly divide the space into beds, ensuring a sufficient distance between them. The ideal interval is 30 centimeters. Between the rows it is worth alternating the distance of 30 and 70 centimeters, then the plants will have enough nutrients.
Feeding should be done in exact dosages, because oversaturation with certain minerals leads to blackening of the fruits, leaves and stems of tomatoes. It is necessary to provide sufficient illumination, it is also desirable that the bed is blown by the wind. Watering should be carried out not with cold, but warm water, under the root, and not on the leaves. Shoots should be tied, and damaged and old leaves should be removed in time.
What to do if the tomatoes have turned black? If, despite all preventive measures, tomatoes still begin to turn black, it is urgent to save the crop. Choose one of the cloudy days and spray tomato bushes. For this, different compositions are used - garlic, kefir-water, chloride. All of them protect healthy plants from fungal spores.
Watering plants must stop. Not much affected fruit should be removed, treated with hot water at temperatures up to 70 degrees and laid out for ripening. Bushes and leaves damaged by the disease must be burned at the stake.
Thus, blackening of tomatoes can occur due to improper care, as well as due to diseases. If you apply fertilizers correctly and competently care for plants, you can minimize the risks and get an excellent harvest of juicy and ripe tomatoes. If tomatoes are sick, you need to react immediately.
August is the time to harvest tomatoes for the winter. Today we will tell you how to prepare sweet pickled tomatoes 6 different ways. Try this season to surprise loved ones with really tasty tomatoes!
Today we learn more and more about the benefits of tomatoes, but, unfortunately, we cannot forget about a number of contraindications and hidden dangers for the human body. "Site" Tells who and why to limit the use of these juicy berries.
Most people know about the delicious tomato sauce "Marinara". However, in order to prepare it, you need to ride for several hours over the boiling mass, constantly stirring it. But there is a secret, thanks to which the preparation of tomato sauce will not take any effort or time. The famous chef Justin Chaple shows in his video how to do it.
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