Late blight or "brown rot" is the most common and dangerous disease that brings gardeners a lot of trouble, especially when growing tomatoes. Late blight is a fungal disease that mainly affects different varieties of tomatoes.
Brown spots appear on the stems and leaves, a faint white bloom forms on the underside of the leaf, and still the green fruits turn black.
The disease is harmful to the whole plant, and the fruits are not an exception, so vegetable growers try to plant on their plots varieties of crops that are resistant to this dangerous disease. This disease affects all parts of the plant, including fruits, therefore more and more people choose tomato varieties that are resistant to phytophthora. Basically, the most resistant to late blight tomatoes are hybrids. In this material, we will examine which varieties tolerate this disease best.
The danger of "brown rot"
Phytophthora is very dangerous for many plants of the nightshade family.. Phytophthora infestans is the name of the causative agent of the disease, which means "that which kills the plant." And this name is fully justified, as with the appearance of this disease the tomato bush begins to dry, gray spots appear on the fruit, which gradually grow into rot with an unpleasant smell. Tomatoes are deformed and fall off.
If you do not apply measures to treat plants from phytophthora, you can lose the entire harvest of tomatoes.
Tomatoes that are resistant to late blight and disease for greenhouses
There are no tomatoes, which could be 100% attributed to non-diseased blight, just breeders have bred hybrids that yield crops much earlier than the disease begins to develop. Consider the main hybrid varieties with resistance to phytophthora, which are recommended to be planted in closed ground.
Gardener
Early ripe, semi-determinant variety. Bush up to 2 meters, from the first shoots to harvest takes 100 days. To get a good harvest, you need to form a bush in 2 stems, the remaining layers are removed, and the strings are tied up.
Prolonged fruiting begins in mid-summer and continues until the first frost. Fruit weight up to 360 grams, while they have excellent taste and aroma. Fruits are stored for a long time and tolerate transportation. Variety Ogorodnik has a strong immunity to the phytophthora.
Roma
Salad, high-yielding, mid-season hybrid, with high germination of seeds. The first tomatoes can be tasted on the 110th day after sowing. The bush is not large, deterministic species, grows no more than 1.3 meters in height, does not require support and garters.
To obtain a large number of fruits of the Gypsy variety from one bush, it must be formed into three stems.
Fruiting carpatus on 5 tomatoes on one brush. Fruits weighing 180 grams with a sweet-sour taste. Tomatoes tolerate long-term storage and transportation. Culture has a strong immunity to many diseases.
Academician Sakharov
Mid-season, tall variety with a friendly fruiting on the 90th day after germination. Fruit culture is very Academic Sakharovwhile the fruits weigh up to half a kilo.
Poor storage, as the fruit is very juicy. Resistant to late blight and other viral diseases.
Resonance
Early, hundred day hybrid. It tolerates strong heat, drought. The bush is not big, it grows up to one and a half meters in height. Universal tomatoes weighing 300 grams, with a pleasant taste. possesses not only good keeping quality and transportation, but also to most diseases, including phytophthora.
Union 8 F1
Early ripe hybrid, with a maturity of 100 days. Bush varieties Union 8 F1 rarely grows above a meter.
It is noteworthy that fruits weighing 125 grams ripen very amicably, for the first 2 weeks of fruiting the variety gives 60% of the crop. Fruits are very dense, therefore they transport without loss and are well stored. The hybrid is resistant to many diseases.
Other varieties
- Rose of Wind.
- Snowdrop.
- Alaska.
- Snow tale.
- Alpatiev 905.
- Little Prince.
- Budenovka.
Which early ripe varieties have the strongest immunity?
Phytophthora - can settle in the ground, on a garden tool and evict it almost impossible, but it is possible to plant varieties of tomatoes that are immune to this parasite fungus.
Tatyana
Indeterminate, a hybrid with average periods of vegetation, with a bush height of more than three meters.
Tomatoes varieties Tatiana begin to ripen at 100 days after the gatherings. On 1 brush arises up to 7 fruits, weighing 400 grams.
The fruit is very attractive, red and slightly flattened. The variety is high-yielding from one bush, you can get more than 8 kg of fruit.
Cardinal
Tomatoes varieties Cardinal tall, indeterminate, bush reaches 2 meters. Early ripe, gives a harvest for 80 day after emergence of the first sprouts.
The culture is resistant to late blight and infections.
The black
Tall, mid-season hybrid, which is rarely attacked by fungal diseases. height of the bush 2 meters or more.
Grade Black fruit begins to give on the hundredth day after germination. This variety is remarkable for the fact that it has a purple-colored tomatoes.
Up to 8 kg of fruits weighing 170 grams each can be collected from one bush of the Black variety.. It tolerates transportation and long-term storage.
Carlson
A compact, tall, indeterminant tomato that begins to set fruit on day 80 after germination.
The yield of the Karlson variety is high, up to 10 kg from a bush, while each tomato weighs 200 g. The bush needs to be formed and tied up.
The plant is well resistant to many infections and fungal diseases.
De barao
De Barao variety - indeterminant gibrit with a height of bush more than 2 meters. Each bush produces up to 10 brushes with 6 fruits weighing 300 grams. The variety is mid-season, hundred days, universal.
It has good keeping quality, does not lose its presentation during transportation. The hybrid is resistant to many diseases.
Other species
- Black bunch of F1.
- Black pear.
- Union 8.
- Lark
- Karotinka.
- Tsar Peter
Domestic undersized hybrids
Modern varieties of tomatoes are resistant to disease. There are varieties of tomatoes that can be grown without garters and shrub formation.
Dubrava
This is a low-growing variety, the height of the bush rarely reaches more than 60 cm.
The first fruits of the variety Dubrava can be collected on the 80th day after the appearance of the seedlings.
The grade is high-yielding, at the same time does not need a garter and pasynkovaniye. Since the plant is early ripe, it does not become ill with late blight during the growing season.
Resonance
Resonance undersized hybrid variety, bush height 1.2 m. Requires the formation of a bush, so during the whole growing season it forms side layers.
Harvest from the variety Resonance plants are obtained after 90 days.
It is worth noting that the culture quietly tolerates a lack of moisture, and is not susceptible to common diseases of the nightshade family.
Dwarf
Variety of tomatoes Dwarf - versatile, hundred day, short. Bushes are small, compact, only 45 cm tall. From one plant you can get 3 kg of delicious, fragrant fruits, weighing 60 grams each.
Orange Miracle
The early ripe grade of a tomato, the first tomatoes can be tried already for the 90th day after shoots. The weight of one fruit is 400 grams. It grows well and bears fruit with a lack of moisture. Excellent against phytophthora and infections.
Perseus
Early ripe, short (70cm), universal variety. The weight of one tomato is 120 grams, you can get a harvest for 90-100 days after germination. Variety Perseus is immune to many fungal and infectious diseases.
And more?
- Little Prince.
- Grotto.
- Dubok.
- White filling.
- Berry.
- Orange heart.
- Lights of Moscow.
Preventive measures
It is very difficult to treat tomatoes from phytophtora, sometimes no methods and preparations help to maintain good yield.
therefore it is better to use preventive measures that will help prevent infection.
- The first method of prevention can be called growing tomatoes in greenhouses, since there it is easier to create special conditions under which the disease does not spread, and tomatoes will grow strong and healthy.
- In the greenhouse should be equipped with a ventilation system, with constant ventilation.
- The soil in the greenhouse needs to be disinfected before each planting, as phytophtora spores may be in the ground.
- When planting tomatoes in open ground, you need to choose a ventilated place, while watering should be moderate, otherwise the phytophthora will quickly wake up and begin to act.
It is worth noting that you do not need to overfeed plants with organic matter, it can also cause infection.- Watering is carried out only under the root, since in case of cloudy weather, moisture may linger under the leaves of the plant, which will cause infection by the fungus. Watering is carried out early in the morning.
- Noticed the dark spots on the plant, tear it out of the ground without regret and burn it, so you will save your harvest.
It is worth noting that you do not need to overfeed plants with organic matter, it can also cause infection.Conclusion
Of course, any experienced vegetable grower knows that tomatoes are not ill with late blight in general, do not exist in nature, but you can avoid infection with this disease in your area.
To do this, you need to carry out preventive measures, before planting to decontaminate the seeds and soil. You should buy hybrids that endure attacks of various fungal infections..
