Fungal diseases

August 12, 2017 17:51 | Diseases And Pests

Although fungal diseases, however, and sometimes more dangerous than the virus, their control is usually more successful.Names of fungi causing them, perhaps not necessarily result: it's interesting to other scientists and plant pathologists.Practice-florist important to remember and learn to recognize the symptoms of disease.

Powdery Mildew.Sometimes the plant is covered with bloom, it seems, at first glance, to wake up and adhering to the stems and leaves greyish flour.If you look at it, it is often possible to distinguish what is really like plaque is not on grains, but rather on the soft bristles.This mycelium powdery mildew pathogen.

If the fungus settles on the plant, it begins to lag behind the growth of its shoots and leaves quickly lose their shape, droop and die.Especially often strongly affected by the disease, young plants.Downy Mildew.From the picture of defeat powdery mildew is a disease characterized by the fact that the gray powdery coating, caused by quite different fungus is formed on

ly on the underside of the leaves, and on top of the affected sites appear gradually expanding oily spots that turn yellow over time.When they become very much, the plant begins to drop leaves.

Fusarium.The fungus infects the roots and root collar, the adjacent leaves and stems turn yellow from the bottom, the plant begins to wither and die if you do not carry out the treatment.At bulbous disease begins with the infection of the stems of bulbs.When storing the resultant can be seen from below whitish-pink (or pinkish-white) coating, it is better not to plant them without dressing and making other therapeutic measures.

Gray mold.The first sign of onset of the disease is the appearance in various parts of the plant (leaves, buds, flowers), rash-like coating of gray dust, under which tissues begin to fade and turn yellow.Later, flower organs, in which she appeared, wither and die.

Brown rot the root collar.Manifestations of the disease are similar to symptoms of Fusarium, with the difference that the infected plant root collar softens and turns brown and then black.

Brown rot corms.On the leaves after flowering appear small oblong spots with reddish-brown edges (if a lot of them can grow brown and then die off whole leaf), gradually the disease spreads to the root system.If tubers are infected side, they rot away entirely, and through infected stem from mid-may in appearance seem healthy, determine that rotted corms, you can by clicking on the Donets.

Dry rot.If you see a premature yellowing of leaves, ending their drying may plant struck by dry rot.Look closely to the underside of the leaves: in the case of dry rot infestation there can see tiny black dots - sclerotia of the fungus.The lower part of the plant rots, stem often break in two at the bottom.

Solid rot or septoria spot.On the leaves spots appear purplish-brown color, which sereyut, the middle spots brighten the edges.On the spot you can discern the tiny black dots.

stem rot.Plants infected with stem rot prematurely and quickly fade.Unfortunately, the fungus causing it settles directly in the stems, and not on the surface of tissues, and because it is extremely difficult to see - except for a fault in the core will be able to notice white flakes.The diseased plants are usually not treated and destroyed.

rot the stems.Despite the similarity of the name with the name of a previous illness, to put an equal sign between them can not - they have different pathogens and different predictions: the stems rot amenable to treatment and prevention.Learn stem rot on okoltsovyvaniyu (base lesions) and death of peduncles.

Spotting.Spotting can cause different pathogens, and because there is a difference in the symptoms (not to mention other diseases, which is also a sign of the emergence of spots).If suspicious spots on the leaves do not fall under the description of the diseases listed above, then this is the spot.

Rust.On the surfaces of leaves appear yellowish first point, and then - like rust spots, and yellow pads gathering dust may appear on the bottom, and by the end of the growing season - often shallow curved brownish bars, while stains can be transformed into almost black stripes.In conifers often thickened branches and protrudes from the resin of the resin ducts blockage.

sooty fungus.This disease is usually ill damaged or weakened plants, with her on the leaf surface and (or) on the apical shoots appears black patina, hampering the normal development and growth of the plant.

Fight sooty fungus easiest: it is enough to wash off with soap solution with a cloth.

blight.Bacterial blight can have different reasons: sometimes it is wrong, too abundant moisture of the soil.But there are also fungal gummosis.It affects it most citrus fruits.Symptoms: on the bark of the plants closer to the root appear reddish-brownish longitudinal spots under the bark of dead in their place begins to speak arabic (special allocation) freezes in the air.The leaves begin to turn yellow and fall off, the plant withers.

Blight bulbs.As the name implies, it can suffer from bulbous flowers.The bulb begins to rot from the top, on the affected spot light formed sclerotia (fungus clusters), and on the roots - brown.Infection occurs in the soil and in the soil.

blue mold.As with previous disease, blue mold affects bulbs.Calling her mold fungus settles on them only in the event that the bulbs are damaged or improperly stored."Blue" is called the mold due to the fact that at a certain period in the affected areas formed a blue plaque from fungal spores.