The need and utilization of basic nutrients in agricultural production in the Czech Republic (Review)

abonos analyse statistique animal husbandry application rates azote besoin nutritionnel broadcasting climatic factors cropping systems crops cultivated land cultivos cycling dose d'application engrais exploitation agricole explotaciones agrarias facteur climatique farms fertilidad del suelo fertilizers fosforo necesidades de nutrientes nitrogen nutrition des plantes nutritional requirements oligoelementos pastizales pastures phosphore phosphorus plant nutrition plante de culture potasio potassium rendement rendimiento sistemas de cultivo site factors soil fertility statistical analysis tierras cultivadas trace elements yields