2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38
Any stars in the world are full of envious people who dream of harming their radiance in some way. They weave intrigues, pull out large and insignificant crime from the secluded corners of the star life, trying to "tarnish" the reputation of the star and throw the idol of many people off a convenient pedestal. This fate does not bypass the plants. Many enemies surround the starry aster, trying to erase its presence from the face of the Earth. But the aster has a wise and hardworking defender who seeks to protect her from adversity
Fusarium
Parasitic fungi, firmly established in the upper soil layer, inflict huge losses on workers in gardens, fields and vegetable gardens. They affect plants at any age, sparing young shoots and adult plants. They also make their barbaric forays into flower beds in which asters grow. They especially like the period when asters form flower buds, or the time of flowering.
The forays of fungi on young plants are manifested in the pallor of the leaves, their wilting and drying out. In older plants, the leaves begin to turn yellow. Yellowness spreads from the bottom of the plant, spreading throughout the bush. The leaves wither and curl, the stem turns brown and rots, the roots rot. Spores of the fungus cover the root collar of the stem with a pink coating.
They choose the time for devastating raids, focusing on the air temperature. The most comfortable temperature range for them is from 20 to 27 degrees Celsius. If the temperature drops below 12 degrees or rises above 32 degrees, fungi prefer to hide in the plant debris of the soil, so that, after waiting for comfortable degrees, they pounce on the plants with renewed vigor.
For their habitat, parasitic fungi choose loamy and clayey soils, preferring areas with high acidity.
The response of plants to a pathogen is similar to that of humans to germs and viruses. First of all, fungi attack weak plants, plants with roots damaged during transplantation.
Fusarium control
• Alternating planting, planting asters in the same place with an interval of 4 years.
• Removal and destruction of infected plants.
• Neutralize the acidity of the soil on which the asters grow.
• Temper seeds and seedlings. The transplant is carried out carefully, trying not to damage the roots.
• Choose resistant varieties of asters for planting.
• Treat seeds and spray the bushes with fungicides (formalin, Bordeaux liquid and others).
Rust
Another lover of profit at someone else's expense is a rust fungus. Laying his spores on the leaves of asters, he dries them out, depriving the plant of nutrients.
Control measures are similar to measures to combat fusarium.
Rhizoctonia
This mushroom waits for the florist's oversight, penetrating into damaged roots or roots planted too deep. He loves to profit not only with asters, but also with cloves, potatoes, tomatoes and other plants. Having occupied the roots of a plant, it leads to their decay, which entails wilting and death of the entire plant.
The mushroom feels at ease on moist, acidic and organic soils. It can be seen by a felt-like brown coating of fungal mycelium that appears at the base of the victim's stem.
To the already described
control measures can add:
• The soil for asters should be loose, not creating stagnant water.
• Do not plant asters in places where potatoes, tomatoes, carnations and other plants, for which this mushroom is an enemy, were previously grown.
• When growing asters in greenhouses, the soil is disinfected.
Other lovers to annoy astram
In addition to the above-described lovers to spoil the life of the asters and the mood of the florist, there are others.
This is
gray rot, fierce on plants in the second half of summer.
Slobbering penny, settling its yellowish larvae in the axils of the leaves, in the fight against which the infusion of garlic will help.
Spider mitebraiding the leaves with its nets.
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