Schütte Brown, Snowy, Present

Schütte Brown, Snowy, Present

Disease development

Schütte strikes from coniferous junipers, pine, fir, spruce, cedars, cypress, thuja. Mycelium of brown shute fungus develops under snow at a temperature of + 0.5 * C and above. After the snow melts on the coniferous trees, a brown one affected by the needles disease is visible. On the sick needles, a black-gray cobweb-shaped raid is clearly visible – an overgrown mycelium. If you look closely (through a magnifying glass), black dots are clearly visible – the fruiting bodies of the pathogen fungus. Especially severely affected are young plants with weakened immunity after transplantation.

On the juniper, shute appears on the old needles later – in early summer. The needles acquire a yellow-brown color or brown color. By the end of summer, dark dots are visible at the tips of the needles – fruiting bodies with fungal spores. The best fungus develops in humid conditions on weakened plants. Mycelium quickly fills the wood, cutting off the ability to get needles. The needles turn yellow, dry, and almost do not fall. Bags with mature spores quickly spread in the air and affect healthy needles. Snowfall creates the necessary conditions for wintering. With spring slow snow melting, the disease gets an opportunity for the further rapid spread of the disease.

Present and snow shute affects different types of pine. A harmful fungus develops at a temperature of about 0 ° C under the snow. During the spring and early summer periods, the fungus grows intensively, affecting the wood. Spore-bearing bags ripen in autumn. The affected needles turn yellow, turn red-brown. Trees, especially young ones, die.

Conifers from shute

Positive results provide comprehensive protective measures.

  • Coniferous species resistant to shute damage are planted in summer cottages and other areas.
  • Young seedlings should have significant isolation from adult trees and coniferous bushes.
  • In the summer cottages, autumn fallen sick needles are necessarily removed, sick and dried branches are cut. Waste is burned.
  • During the summer, with the prophylactic and therapeutic purposes conifers treated with 1-2% Bordeaux mixture, or other copper-containing drugs, alternating them with the fungicidal treatment preparations ( spd, HOM, and others). As a preventive measure, spring treatment is carried out, and diseased plants are treated after 10-15-20 days with drugs in doses according to the recommendations. You can perform the treatment of conifers with tank mixtures, after checking the preparations for compatibility. Preparations process not only plants but also the soil. Good results are achieved by treating the soil and the aerial parts with bio fungicides – phytosporin or epin.

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