11 results on '"Nitrogen analysis"'
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2. Electron paramagnetic resonance evidence that copper is complexed in humic acid by the nitrogen of porphyrin groups.
3. Soil pollution and environmental health.
4. Survival and mineralization and immobilization of 15N-labelled Serratia cells in a boreal forest raw humus.
5. Nitrogen transformations in soils. 3. In calcareous soil under barley and cow-bean in a two year's rotation.
6. Chemical tests for potentially available nitrogen in soil.
7. Effect of sodium chloride and moisture content on ammonification and nitrification in incubated soil.
8. Studies on the humification of organic matter in a red Rakar soil.
9. A chemical index of soil nitrogen availability.
10. Studies in humic acids decomposing bacteria in soil. I. Selection of a method for separation of humic acids.
11. Effects of low sub-sterilising doses of gamma radiation on carbon, nitrogen and phosphorus in fresh soils.
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