博文
目前显示的是 四月, 2018的博文
Greatest illustration of Trichoderma harzianum in Agriculture
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As a kind of biocontrol bacteria, Trichoderma harzianum can be used to prevent plant diseases caused by pathogenic bacteria such as Pythium, Rhizoctonia solani, Fusarium, Rhizopus, Haloxylon, Sclerotinia and Sclerotium. Effects of Trichoderma harzianum in agriculture Competitive effect: Trichoderma harzianum can grow rapidly in the plant’s root and leaf circumference, seize the site of the plant body, form a protective cover, just like putting boots on the plant, prevent the pathogenic fungi from touching the root system and leaf surface. In order to protect the roots and leaves of plants from the above-mentioned pathogens, and ensure the plants can grow healthily. Heavy parasitism: Heavy parasitism refers to the complex process of identifying, contacting, entangling, penetrating, and parasitizing pathogenic bacteria in a series of consecutive steps. In the interaction between Trichoderma and pathogenic bacteria, the host mycelium secretes some substanc...
Why we need to control nematodes?
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The number of nematodes in the soil is abundant and varied. Soil nematodes are widely distributed in all types of soils. The number of nematodes in different soil depths is different. In the 10-20 cm soil layer, soil nematodes distribute most. The role of nematodes There are two sides to everything, and the same goes for nematodes. Let me talk about the positive side first. Soil nematodes play a very important role in the decomposition of organic matter, nutrient conversion and energy transfer, and are an important part of the soil ecosystem. For example, nematode excreta can contribute 19% of the dissolved nitrogen in the soil. At the same time, nematodes are also used as soil indicator organisms to evaluate the ecosystem biological effects, soil health, ecosystem succession, or disturbance levels. Almost every plant can be parasited or harmed by one or more nematodes. Some nematodes feed on plants and are commonly referred to as ‘eelworms’ in the British-speaking world. Mo...