Description: A biostimulant is a substance or microorganism that, when applied to plants, enhances their growth and development. These compounds can be of natural or synthetic origin and work by stimulating physiological processes in plants, such as nutrient absorption, disease resistance, and tolerance to adverse environmental conditions. Biostimulants are particularly relevant in sustainable agriculture, as they promote healthy growth without relying solely on chemical fertilizers. Their use can lead to increased productivity and quality of crops, as well as improved soil health. Additionally, biostimulants can contribute to reducing the environmental impact of agriculture by decreasing the need for chemical inputs and promoting more ecological practices. In summary, biostimulants are valuable tools in modern agriculture, offering benefits for both farmers and the environment.
History: The concept of biostimulants has evolved over time, starting with the use of natural substances in traditional agriculture. However, the term ‘biostimulant’ began to gain popularity in the 1990s when more systematic research was conducted on the effects of certain microorganisms and compounds on plant growth. As agriculture faced challenges such as climate change and the need for more sustainable practices, interest in biostimulants grew, leading to an increase in research and development of specific products in this field.
Uses: Biostimulants are used in various agricultural applications, including enhancing crop growth, promoting soil health, and increasing resistance to diseases and environmental stress. They can be applied through irrigation, foliar sprays, or soil incorporation, depending on the type of biostimulant and the crop. Additionally, they are used in organic crop production and precision agriculture to optimize resource use and improve production efficiency.
Examples: Examples of biostimulants include seaweed extracts, humates, and certain microorganisms such as mycorrhizae and beneficial bacteria. For instance, the use of seaweed extracts has been shown to increase plant resistance to drought conditions and improve nutrient uptake. Another case is the application of mycorrhizae, which help plants access nutrients in the soil that would otherwise be unavailable.
