K30 is a liquid fertilizer in solution with a high Potassium content. Potassium is the ordering element of plant vegetative functions. This element is vital in chlorophyll photosynthesis, sugar and starch synthesis. Its decisive function is in fruiting and imparting better quality to all kinds of crops: in practice, good potassium fertilization results in better qualitative and quantitative fruit yields. Potassium-treated plants are found to be more robust and resistant to climatic adversity and low water availability; flower coloration is also intensified and fruit flavor, color and shelf life are improved.