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A biostimulant is a substance or microorganism that, when applied to plants or soil, stimulates natural processes to enhance nutrient uptake, efficiency, tolerance to abiotic stress, and crop quality. Biostimulants do not provide direct nutrition to plants, but they promote growth and health by improving the physiological and biochemical mechanisms that control plant growth and development.

Biostimulants can be made from a wide range of organic or inorganic sources, including plant extracts, seaweed, humic substances, beneficial microorganisms, and synthetic compounds. They are generally applied in small quantities and can be used in conjunction with fertilizers, pesticides, and other crop management practices.

The use of biostimulants in agriculture is becoming increasingly popular as a sustainable way to improve crop yields and quality while reducing the reliance on synthetic inputs. However, biostimulants are still a relatively new category of agricultural inputs, and more research is needed to better understand their mechanisms of action, efficacy, and potential environmental impacts.

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