Stable isotopes in plant nutrition, soil fertility and environmental studies: proceedings of an international symposium on the use of stable isotopes in plant nutrition, soil fertility and environmental studies
International Atomic Energy Agency, 1991 - Science - 670 pages
New methodologies and approaches in stable isotope analysis; Measurement of biological nitrogen fixation using 15N additions; The 15N natural abundance method for measurement of biological nitrogen fixation; Applications of 15N methods to measurement of biological nitrogen fixation; Stable isotopes in soil organic matter studies; Soil nitrogen transformations and losses; Nutrient uptake and use by the plant; Stable isotopes in studies of plant metabolism; 13C / 12C discrimination as a measure of water use efficiency; 13C in studies of plant carbon balance; Stable isotopes in water transport studies; Sulphur flows and transformations in ecosystems; Atmospheric change and aerial pollutants.
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Using NMR to characterize the development of soil organic matter
Measuring natural abundance variations in sulphur isotopes by Dumas
Comparison of ANCAMS and KjeldahlRittenberg techniques
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6l5N values acid Agriculture ammonium amount analysis ANCA-MS applied assimilation atmospheric Azolla bean biomass calculated carbon isotope discrimination common bean concentration cultivars DANSO denitrification determined dry matter ecosystems effect error estimates experiment field forest fractionation genotypes green manures growth harvest immobilization increased inoculated irrigation isotope dilution isotope ratio isotopic composition kg N/ha l5N enrichment l5N labelled layer leaf water legume loss maize mass spectrometer measured metabolism mineralization N2 fixation natural abundance natural l5N abundance Ndfa Ndff needles nitrate nitrification nitrogen fixation nitrogen-15 nodules non-fixing non-N2-fixing non-nodulating nutrient P.O. Box photosynthesis plant material Plant Physiol Plant Soil plots reference crop reference plants Research residues rice roots samples Soil Biol soil organic matter Soil Sci sources soybean species stable isotopes studies sulphate sulphur isotope Table technique tillering tion tracer treatment trees twigs uptake urea variation wheat yield