Guadalsol Plus is one of the most concentrated liquid phosphonates on the market. It is a strong stimulator of important metabolic processes of the plants, contributing to overcome environmental, pathogenic and nutritional stress situations. It enhances systemically the natural self defence mechanisms of plants. The high phosphorus and potassium supply provided by Guadalsol Plus prevents etiolation caused by excessive or imbalanced nitrogen fertilisation, obtaining a stronger and more balanced growth.