The disease causes death in coniferous, deteriorating plant decorative features, reducing the growt

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State Plant Protection Service, by testing the arboretum, established a new plant quarantine organisms "Mycosphaerella dearnessii" that causes pine abortion, business portal "Nozare.lv" was informed corps. Potential host organism is all pine species.
The disease causes death in coniferous, deteriorating plant decorative features, reducing the growth of wood and even contributing to tree death. Greater economic importance it has in nurseries, as the young plants may die. Europe, the disease has been found more ornamental pine species in parks, chinese automobile manufacturer botanical gardens and other decorative plantings, but there are cases when the disease infects pines. This disease is found in Lithuania and Estonia.
First signs of the disease appear on older needles yellow spots which later become chinese automobile manufacturer brown with yellow border. Severe infections, lesions coalesce and infected needles throughout nobrūnē, die and fall off prematurely in late autumn or early winter. Signs of infection more strongly expressed in the bottom of the tree. After several years of infection for certain branches may fall off the needles or completely wither the whole tree. On the ends of the needles nobrūnējušajiem visible black spots caused by fungi fruiting bodies, which develops and matures in late August. Mushrooms fruiting bodies are formed and mature well as the fallen needles and overwinter in this way.
The main factors that determine the spread of the disease is the rainfall and air temperature. Fungi spores from tree to tree is mainly spread by droplets of rain, wind and insects, while a long-range disease is mainly spread by infected planting material. In order to limit the spread of these ailments, most important in propagating and planting material testing manufacturing sites.
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