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Introduction To Biopesticides
Jun 22, 2017

Biological pesticides refer to the use of biological living organisms (fungi, bacteria, insect viruses, genetically modified organisms, natural enemies, etc.) or its metabolites (pheromones, auxin, sodium naphthalate, 2,4-D, etc.) for agricultural pests to kill Or inhibiting the preparation. Also known as natural pesticides, refers to non-chemical synthesis, from natural chemical substances or living body, and has the role of sterilization of pesticides and pesticides. Biological pesticides include insect-borne pathogenic nematodes, bacteria and viruses and other microorganisms, plant derivatives and insects pheromones and so on. Bio-pesticides play an important role in the integrated pest management system (IPM) used in organic agriculture. Expert studies suggest that the development of bio-pesticides for the following reasons: pesticide caused by environmental pollution, the target population gradually develop resistance, and pesticides for non-target groups of negative impact. Over the past three decades, chemists, biochemists, toxicologists, and IPM experts have worked together to study new generation of compounds derived from plants that have the effect of managing pests and the lowest degree of adverse environmental effects. The first generation of biological pesticides contain nicotine, alkaloids, rotenone, pyrethrum and some vegetable oil, etc., in human history has been quite the use of time. In 1690, the water-soluble components of tobacco were used against pests of cereals. Pyrethrum is also the main ingredient of mosquito coils. The market share of bio-pesticides is still quite limited. In 1995, bio-pesticides accounted for 1.3% of the world's total sales of pesticides. Many factors limit the growth of biological pesticides: biological pesticides are usually not widely available, and chemical pesticides compared to the effect is relatively slow, shorter duration and higher cost. However, bio-pesticides have a good prospect of development relative to the market demand for chemical pesticides in many countries stagnating or diminishing. In the next few years, the estimated market growth rate for chemical pesticides is about 2%, and bio-pesticides are 10-15%. Growing organic agriculture, the demand for bio-pesticides is gradually rising. On the other hand, bio-pesticides should also, like chemical pesticides, receive a prudent assessment of their health, food, ecosystem and environmental safety. Biological pesticides are naturally occurring or genetically modified agents that differ from conventional pesticides in their unique mode of action, low dosage, and specificity of target species. With the rapid development of science and technology, the scope of biological pesticides continue to expand, involving animals, plants, microbial species and a variety of biological-related substances with pesticides, such as plant-derived substances, genetically modified pest, Natural products of the bionic synthesis or modification of synthetic compounds, artificial breeding of harmful organisms of antagonistic organisms, pheromones and so on.