Root growth promotion by humic acids from composted and non-composted urban organic wastes

Abstract

Besides general effect of organic residues on soil quality and plant crop, hormonal direct effect on plant growth by extracted humic acids of organic materials is interesting and profitable theme. In the present work, we studied on direct interaction between humic acid and root growth, depending on different origin of organic materials. All extracted humic… (More)
DOI: 10.1007/s11104-011-1024-3

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4 Figures and Tables