19 results on '"Nitrogen analysis"'
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2. [Microbiological aspects of spontaneous and induced self-heating of peat].
3. Electron paramagnetic resonance evidence that copper is complexed in humic acid by the nitrogen of porphyrin groups.
4. [Stratigraphy of an often used peat-bog place. 3. Nitrogen balance].
5. Soil pollution and environmental health.
6. Survival and mineralization and immobilization of 15N-labelled Serratia cells in a boreal forest raw humus.
7. [Composition of the humus of manganous-ferrous new formations].
8. [Nitrogen-fixing ability of oligonitrophils in soil and their role in soil enrichment by fixed nitrogen].
9. Nitrogen transformations in soils. 3. In calcareous soil under barley and cow-bean in a two year's rotation.
10. Chemical tests for potentially available nitrogen in soil.
11. Effect of sodium chloride and moisture content on ammonification and nitrification in incubated soil.
12. Studies on the humification of organic matter in a red Rakar soil.
13. A chemical index of soil nitrogen availability.
14. [Effect of the mixture of underground soil and crumb on nitrification and soil bacteria after adding various organic substances. 3. Factors influencing the effect of underground soil admixture].
15. [Effect of nitrogen, phosphorus and potassium in the production and nutritional value of beans (Phaseolus vulgaris L.)].
16. [Use of biological tests in the determination of physiologically absorptive nitrogen in the soil. I. Decomposition of cellulose].
17. Studies in humic acids decomposing bacteria in soil. I. Selection of a method for separation of humic acids.
18. [Mineralization of the organic nitrogen of soils during the dry season in the climate of the Mediterranean].
19. Effects of low sub-sterilising doses of gamma radiation on carbon, nitrogen and phosphorus in fresh soils.
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