Soil and Tillage Research · 2000
Effect of no-till cropping systems on soil organic matter in a sandy clay loam Acrisol from Southern Brazil monitored by electron spin resonance and nuclear magnetic resonance
Bayer, C., Martin-Neto, L., Mielniczuk, J., Ceretta, C. A.
Abstract
No abstract in the library.
Findings
What changed what, as the paper reports it. Grouped by the measured property. The largest groups are open; open the others as you need them.
semiquinone free radical concentration in humic acid
↑ 12
- decrease
with C added by cropping systemssignificance not stated · 0–2.5 cm · HA samples collected1993 · Experimental Station of the Federal University of Rio Grande do Sul · 0-2.5cm;chemically extracted HA; same four cropping systems as physical fractions; residue inputs characterized for full12year experiment; no N fertilizer; no input-versus-spin test reported.
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