Bamboo witches' foot disease mainly harms bamboo, bamboo belly bud, light bamboo, water bamboo, bamboo, bamboo, bamboo, bamboo and so on. The newly-affected bamboo branchlets are elongated and striated. The internodes are short, so continue to branch into two years later to form a bird's nest, cluster formation sagging. The growth of bamboo shoots is reduced year by year, and the entire bamboo twigs are severely diseased and then withered. The disease is a fungal disease. The source of infection is the conidia produced on the spring shoots of the diseased plants after winter. After prominence of wind and rain, the spores spread from early May to mid-June. The spores invade the growing point from the new shoots, stimulating their rapid growth and thus exhibiting unique conditions. Prevention methods Strengthen management and increase resistance to disease. Remove old and weak bamboo branches and diseased bamboo to prevent disease from recurring infection. The severe bamboo strain was cut off, burned in place, and fertilization was strengthened to restore the forest phase as soon as possible. Bamboo pole rust, also known as bamboo radon disease, harms the bamboo, bamboo, bamboo, bamboo, bamboo and other bamboo. After the bamboo stem (stem) was damaged, the diseased part became black and brittle, and the severe one died. The bamboo forest declined and the shoot growth decreased. Most of the diseases occur in the lower part of the bamboo pole or the bamboo joint near the base of the ground surface. The diseased department initially developed a discolored plaque. When the lesions expanded and surrounded bamboo poles for one week, the diseased bamboo was dead or broken to one side. The pathogen of this disease is bamboo rust pathogen. There are great differences in the disease status of different bamboo species, and the bamboo disease is heavier. From mid-May to late June, the spores spread during the period of germs. Spores spread by the wind to Hsinchu through the wound or direct invasion of the disease, the incubation period of up to 7 to 19 months. Low-temperature woodlands are often more severe. Control methods When the bamboo forest is sporadic, knives can be used to scrape off the winter spore heap and the surrounding bamboo greens. A 1:1 diesel plus coal tar can be applied to the remaining light disease bamboo. Pressing the soil at the base can suppress the rod rust spot of the base, thereby reducing the spores and invasiveness of the summer spores. Phyllostachys pubescens disease This disease is a devastating disease of bamboo, which is mainly harmful to the new bamboo of the year. The material of the lighter material deteriorates, and the entire bamboo forest is seriously dead. The pathogen is Bacillus subtilis. In the late May to mid-June, the pathogenic ascospores were scattered and invaded. In the first half of July, lesions appeared on the branches of Hsinchu, which were light brown or brown, tongue-shaped or prismatic. The diseased spot around the main shoot or shoot for a week, the leaves on it began to wilt, and the yellowish leaves fell off and the shoots or dead branches formed. At the second, third or even fifth year old lesions, many raised black cone-shaped fruit bodies will grow. Prevention and control methods to remove the forest disease, diseased branches, diseased shoots. During the invading period of bacteria, spraying with 50% carbendazim, or 50% thiophanate, or 50% Bordeaux mixture every other week has satisfactory control effect. Under normal circumstances, as long as the strengthening of bamboo tending management, ditch drainage, lowering the groundwater level; at the same time reasonable cutting, maintaining ventilation and light transmission, prevention and treatment of these diseases have a certain effect.
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