Literaturrecherche

Literatur Helal M (1990) Varietal differences in root phosphatase activity as related to the utilization of organic phosphates. Plant Soil 123(2):161-163

Literatur Jagnow G (1990) Differences between cereal crop cultivars in root-associated nitrogen fixation, possible causes of variable yield response to seed inoculation. Plant Soil 123(2):255-259

Literatur Helal M, Arisha H, Rietz E (1990) The uptake of trace elements by spinach and bean varieties of different root parameters. Plant Soil 123(2):229-232