Modellversuche zum Einfluß der Nährstofïversorgung auf die SO2-Empfindlichkeit von Pflanzen1

Studies on the influence of nutrition on the susceptibility of plants to SO₂ . The mineral nutrition of plants is of great importance for their susceptibility to air pollutants. Substrate media with ammonia as nitrogen source, deficiency of potassium and low pH-values reduce the buffer capacity and the cation contents. Buffer capacity and cation contents play important roles for the detoxification of SO₂-borne products. Low cation contents and a reduced buffer capacity produce a severe increase of the SO₂-effects. Decreased sulfur nutrition results in a considerable delay of the beginning of the SO₂-injuries.