Zhongshengcin is a new type of biological fungicide developed by the Institute of Biological Control of the Chinese Academy of Agricultural Sciences. The fungicide has the characteristics of wide antibacterial spectrum, safety to humans and animals, no residue, no pollution to the environment. In order to verify the effect of neutrophins on the control of apple spotted leaf disease and ring disease, disease investigation and drug test were carried out. The results are as follows.
Apple spotted deciduous disease: Both apple orchards in Yanwei are heavier. When the disease is serious, it causes early defoliation, the fruit development is blocked, and the tree is weak. The mycelium is overwintered on the damaged branches and leaves. The spores are produced from April to May of the next year. The leaves are spread easily during the 20th day of the exhibition. The leaves begin to increase 15 to 20 days after the flower falls, and the rain and water are more. Fog is the main condition for the spread of disease.
Apple ring disease: It is also heavier in the apple orchards in Yanwei. It mainly harms branches and fruits, and is the main disease infesting fruit, often causing a lot of rotten fruit. Rhizoctonia is overwintered on the damaged branches with mycelium, conidia, and a small amount of ascospores. Conidia mainly spread by rainwater splash, invade by lenticels and fruit points, and can be infested at various stages of fruit development. The incubation period of pathogen infection is 20-170 days. When the fruit is near mature, the bacteria multiply and form bad. fruit.
The drug test was carried out in the apple orchard in Qixia City. The test variety is the red Fuji in the fruit period. The test agent was: 11% neutrophin 200 times liquid spray. 270% methyl thiophanate WP conventional dose spray. 370% mancozeb wettable powder conventional dose spray. The control effects on apple spotted deciduous diseases were: 76%, 67%, and 75%, respectively, and the best effect was obtained by spraying 1% of the cytocin. The control effects of rotten fruit disease mainly on apple ring disease are: 73%, 67%, 66%, and it is also the best control effect of neutrophin.
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Geosynthetic Clay Liner With Geomembrane
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