Fertilizer injectors are devices used in agriculture and gardening to deliver liquid fertilizers directly into irrigation systems. They ensure that plants receive the right amount of nutrients efficiently, promoting healthy growth. These injectors can be adjusted to control the concentration of fertilizer, making it easier to meet the specific needs of different crops. Typically connected to drip irrigation or sprinkler systems, fertilizer injectors work by creating a vacuum that draws the fertilizer into the water flow. This method reduces waste and minimizes the risk of over-fertilization, which can harm plants and the environment.