Diseases and pests of roses.
I would like to warn beginners lilievodov: when buying lilies do not be tempted bright labels, first carefully inspect each bulb. The bulb should be firm, firm to the touch, with no blue-green penicillin mold that appears when not stored properly and leads to decay scales.
Also make sure that the roots of the bulbs are alive, at least 5 cm. Bulbs of lilies of the first year of life the roots may be weak or may not be at all (but these bulbs do not come from abroad). The biggest "attack" for the lilies in our region - botrytis (gray mold, gray mold) - the cause of the brown spots on the leaves, buds. Basically, botrytis - a result of violations of the technology of growing plants.
This fungus spreads rapidly only in rainy weather. Frequent cold rain, when the leaves lilies do not have time to dry overnight, leading to their infection with botrytis. Also cause damage to lilies sudden changes in temperature, observed in August (5 hours 0, the day more than 20 0).
Patients Botrytis plants do not die, but the growth of the fungus affected lilies strongly attenuated. Salvation from botrytis is simple: get rid of the water lily leaves, then 6olezn practically does not manifest itself. The ideal solution - install awnings over landings lilies of polyethylene film.
Another way to save Lily from botrytis - before the rains start to spray before planting copper-containing drug ("Home", "oksihom" and others) in accordance with the instructions, and watered the soil solution of these drugs. Affected leaves rot lilies need to be removed. More reliable from botrytis drugs benlat (fundazol) or topsin-M, but they are toxic to humans.
Most resistant to botrytis lily - RT-hybrids, LA hybrids.
For the prevention of Botrytis and other fungal diseases must be observed at the site of the cultivation, changing the landing every time you transplant roses. And although this is difficult to follow in a limited area of â€‹â€‹the garden, yet it should be remembered that the soil gradually accumulate fungal spores (especially where the lilies are planted firmly). During a forced landing lilies to the old place preventive measures such as sparse planting, replacement of soil (or at least the top layer) will also help to keep healthy lily.
With the defeat of the bacterial (soft) rot on the leaves in early spring lilies appear brown oval spots. Then the plants gradually turn yellow and rot, the leaves are falling and the flower stalks. The cause of this disease may be diseased bulbs, soil moisture and excess nitrogen fertilizer. During storage at scales of patients with bacterial rot bulbs lilies appear malodorous sunken spots, causing rotting of planting material.
It is important to regularly inspect the bulbs of lilies during storage. Discovered diseased bulbs should immediately be isolated from others and destroy; not to plant lilies in the same place for several years. Recommended disinfection: soil and bulbs - before planting, storage - 2 weeks before placing the bulbs in storage. When the disease during the germination and growth of plants 3 times a month were sprayed with fungicides.
Infested soil and planting material of the patient, soil moisture can also cause the appearance of root rot in lilies: the tops of the leaves turn yellow, the plants wither. When digging shows that the bulb is healthy, and its roots are covered with small brown spots. Affected plant parts should be removed. For the prevention of the emergence and spread of root rot bulbs lilies with roots disinfected before planting.
Carriers of other fungal disease - rust are diseased bulbs of lilies, plant residues with mushroom spores. On the leaves of plants infected with rust at first appear small discolored spots, later yellowing, padded red spores. The leaves and stems of lilies soon wither. Detected patients rust destroy leaves and stems; plants were sprayed with 1% Bordeaux liquid or appropriate fungicides.
To prevent wintering and spore dispersal of pathogenic fungi found in lilies, their residues autumn carefully collected and destroyed. Disease prevention can significantly reduce the probability of their occurrence. In addition to these diseases in lilies are also found: Fusarium Blight, spot and others.
Chemical fertilizers "fitosporin" helps protect lilies and other plants in the garden of fungal and bacterial diseases; it is not phytotoxic and not harmful to bees. Fitosporin held tillage, soaking the bulbs before planting lilies, preventive and curative spraying.
Lilies desirable plant away from the motley tulips, host - from them may be infected with a virus lily pestrolepestnosti. Symptoms of plant viruses: a distorted, evil flower color, leaf rolling. Compared with other pathogens (fungi, bacteria), viruses are the most dangerous for plants and destructive. Measures against viruses has been invented since they act on the microcellular level.
Affected plants viruses immediately removed and burned, otherwise gradually perish the entire collection of lilies. The viruses are transmitted healthy plants by insects bite of an infected plant or juice affected lilies (for example, when carried Cut inflorescences with different plants with the same knife).
To prevention of viral infections include:
- Regular inspection of landings and removal of suspicious plants;
- Truncation inflorescences set of blades (per inflorescence - individual blade, blade reused after disinfection with alcohol or boiling water);
- Periodic spraying plants with insecticidal preparations against a host - pests.
A variety of insect pests causing great damage to the lilies. The larvae of beetles and click beetles, cutworms, mole crickets very malicious gnaw roots, succulent flowering shoots and bulbs of lilies. Increased vlazhnosit soil, overgrown garden couch grass encourage active reproduction and development of these pests. Root onion mite is very dangerous for lilies. Damage caused by mites scales bulbs lead to their decay.
On the roots of roses sometimes parasitize thrips (I have not seen in their lilies of the pest). Mites and thrips destroyed when digging bulbs through their dressing (eg karbofosom). Careful selection of healthy bulbs of lilies for buying and processing prior to planting significantly reduce the likelihood of transfer of pests in the garden.
The larvae of the lily buds lilies fly damage, causing deformity of flowers. Against larvae of insecticide sprayings conducted in a period of growth and budding roses (eg aktellikom). Much harm lilies aphids and spider mites feeding on sap of leaves and young shoots and causing them to curl drying. Against harmful insects using insecticides or preparations made from plants defenders.
The most dangerous enemy of lilies - custom Liliev beetle Piskun ("fireman"). If you drop it, the beetle falls on his back and appears to be dead. His abdomen is black, so on earth fallen insect did not immediately make out. But the most gluttonous not beetle and its larvae, which looks very unsightly. Adults and larvae of the beetle feed on the leaves of lilies Piskun can carry viruses. Beetles and their larvae is better to collect and destroy manually, as this bug is very resistant to chemicals.
Measures to combat and prevent the emergence of pests on lilies: spraying the plants with insecticidal preparations (for example, "Inta-Vir"), weed control, compliance Machinery Plant.
Mice can eat the bulbs of lilies, if shelter for the winter planting too early, when the soil is not podmÑ‘rzla.
- Unfolding poisoned baits;
- Timely planting lilies cover (around the beginning of November);
- Protaptyvanie tracks after a snowfall.
Lilies, protected from pests and diseases, actively growing, grow wild and breed well, forming a set of children and stem pochkolukovichek.