Artículos
Potassium nitrate: A dual solution
Potassium (K) is an essential nutrient for potato crops, as it affects various aspects of yield and quality throughout the growth period. There are three main potassium fertiliser sources namely potassium nitrate (KNO3), potassium sulphate (K2SO4) and potassium chloride (KCl). The major difference between these potassium sources is the counter-ion that comes with the potassium nutrient. KNO3 contains 38% potassium and 13% nitrate nitrogen (N-NO3-). Both potassium and nitrogen (N) are used in large quantities for potato production.
Potassium sulphate contains 40% potassium and 18% sulphur (S). Potassium is needed in large amounts. Sulphur, although important in plant nutrition, is needed in much lower quantities and excess application can create unwanted salinity in the root zone. Potassium chloride contains 50% potassium and chloride (Cl-). It is a common fertiliser and provides only potassium as a nutrient and no additional N or S.
See more
