What is the toxic level of silicon to plants?

Question

What is the toxic level of silicon to plants?

Answer 1

Although silicon is not considered to be an essential nutrient for most terrestrial plants, it is beneficial to many plants.  Si has the potential to significantly decrease the susceptibility of certain plants to both biotic and abiotic diseases.  Furthermore, in plants such as rice, Si fertilization may even increase growth and yield in addition to reducing disease severity.  However, we are only now beginning to better understand the role of Si in plant health and disease.  As we learn more about the importance of silicon in plant physiology, we may find more ways to use this important element for improving plant health and disease resistance.