Effects of rates and placement methods of urea and potassium chloride on soil nitrogen and potassium and corn dry matter yield

absorption de substances nutritives agua del suelo application rates azote band placement broadcasting chlorure de potassium cloruro potasico contenido de materia seca dose d'application dry matter content eau du sol esparcimiento en fajas fertilidad del suelo fosforo lluvia minerales minerals nitrogen nutrient uptake phosphore phosphorus pluie potasio potassium potassium chloride rain soil fertility soil water urea uree zea mays