Your search returned 5 results.

Results
	1.	Multinuclear magnetic resonance analysis of two humic acid fractions from lowland rice soils. [electronic resource] by Mahieu, N Olk, D C Randall, E W Producer: 20020910 In: Journal of environmental quality vol. 31 Availability: No items available. Save to lists Add to cart (remove)
	2.	Nitrogen-bonded aromatics in soil organic matter and their implications for a yield decline in intensive rice cropping. [electronic resource] by Schmidt-Rohr, K Mao, J-D Olk, D C Producer: 20040716 In: Proceedings of the National Academy of Sciences of the United States of America vol. 101 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	Abundant and stable char residues in soils: implications for soil fertility and carbon sequestration. [electronic resource] by Mao, J-D Johnson, R L Lehmann, J Olk, D C Neves, E G Thompson, M L Schmidt-Rohr, K Producer: 20130122 In: Environmental science & technology vol. 46 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Environmental and Agricultural Relevance of Humic Fractions Extracted by Alkali from Soils and Natural Waters. [electronic resource] by Olk, D C Bloom, P R Perdue, E M McKnight, D M Chen, Y Farenhorst, A Senesi, N Chin, Y-P Schmitt-Kopplin, P Hertkorn, N Harir, M Producer: 20190726 In: Journal of environmental quality vol. 48 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Environmental and Agricultural Relevance of Humic Fractions Extracted by Alkali from Soils and Natural Waters. [electronic resource] by Olk, D C Bloom, P R Perdue, E M McKnight, D M Chen, Y Farenhorst, A Senesi, N Chin, Y-P Schmitt-Koplin, P Hertkorn, N Harir, M Producer: 20191212 In: Journal of environmental quality vol. 48 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)