Über die Zersetzung und Wirkung von Strohdünger im Boden

The Nitrogen Requirement in the Utilization of Carbonaceous Residues in Soil1

“…He attributed the difference to the higher nitrogen requirements of fungi which predominate in acid soils. Lemmermann, Jessen, and Engel (4) and Engel (1) reported that decomposing organic substances cease to be harmful when the carbonnitrogen ratio is near 20 and the nitrogen content is above 2%. Such a mixture prior to decomposition would have a nitrogen content of about 1.2%.…”