A study found that by using silica, a form of silicon that plants can easily absorb, to improve soil, plants can precipitate small particles called phytoliths  The silicon in the particles can slow insect development, and the stone texture of the particles can wear away insect mouthparts, reducing plant infestation
Silicon in crops can affect the physical development of people who eat them
 The researchers suggested that the silicon could be added to soil in areas where insects often attack crops