Phosphorus deficiency increases the argon-induced decline of nodule nitrogenase activity in soybean and alfalfa

argon crecimiento croissance deficiencia de minerales enzymic activity fixation de l'azote fosforo glycine max growth medicago sativa metabolism metabolisme metabolismo mineral deficiencies nitrogen fixation nitrogenasa nitrogenase oxygen phosphore phosphorus rhizobium rhizosphere rizosfera root nodulation simbiosis symbiose symbiosis