Changes in soil organic carbon and nitrogen fractions with duration of no-tillage management

Agriculture & Biology

• soil organic nitrogen 100%
• soil organic carbon 73%
• no-tillage 64%
• particulate organic matter 52%
• duration 41%
• nitrogen 37%
• amino sugars 34%
• soil depth 23%
• amino acids 15%
• soil 10%
• soil fertility 9%
• Hapludults 9%
• coastal plain soils 8%
• pyrolysis gas chromatography 8%
• cropping sequence 6%
• nutrient management 6%
• microbial biomass 5%
• phytomass 5%
• mineralization 5%
• gas chromatography-mass spectrometry 5%

Earth & Environmental Sciences

• zero tillage 81%
• organic nitrogen 71%
• organic carbon 49%
• particulate organic matter 42%
• nitrogen 38%
• soil 27%
• sugar 26%
• amino acid 24%
• soil depth 22%
• soil fertility 11%
• sandy loam 6%
• coastal plain 5%
• immobilization 5%
• cropping practice 5%