FOLI FLOW 13:00:45 is water soluble fertilizer contributing nitrogen 13% and potassium 45%. Potassium nitrate is a unique source of potassium by its nutritional value and its contribution to the health and yield of plats. Potassium nitrate outperforms other potassium fertilizers on crops of all types. Potassium nitrate increase yields and improves quality in vegetable, fields \ crops flowers and nut trees.