It is important to replace phosphorus and potassium removed by the harvests.
Location: Fohrafeld, Austria
Scientific long-term trial with 4 replicates. Phosphorus and potassium fertilization is based on the offtake by the harvests. The study assesses the long-term influence on soil fertility and short-term influence on yields.
K0, P0 = plots without P and K fertilization
K1, K1 = ½ of the offtake of P and K is replaced by fertilization.
K2, P2 = The offtake of P and K is replaced by fertilization.
Phosphorus and potassium fertilization increases yields of maize.