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Phenol accumulation in a young humic fraction following anaerobic decomposition of rice crop residues by Olk, D.C., Jimenez, R.R., Moscoso, E., Gapas, P.

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Inhibition of nitrogen mineralization in young humic fractions by anaerobic decomposition of rice crop residues by Olk, D.C., Samson, M.I., Gapas, P.

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Changes in chemical properties of organic matter with intensified rice cropping in tropical lowland soil by Olk, D.C., Cassman, K.G., Randall, E.W., KINCHESH, P., SANGER, L.J., ANDERSON, J.M.

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Accumulation of lignin residues in organic matter fractions of lowland rice soils: a pyrolysis-GC-MS study by Olk, D.C., Dancel, M.C., Moscoso, E., Jimenez, R.R., Dayrit, F.M.

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Multinuclear magnetic resonance analysis of two humic acid fractions from lowland rice soils by Mahieu, N., Olk, D.C., Randall, E.W.

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On-farm soil N supply and N nutrition in the rice-wheat system of Nepal and Bangladesh by Adhikari, C., Bronson, K.F., Panuallah, G.M, Regmi, A.P, Saha, P.K, Dobermann, A., Olk, D.C., Hobbs, P.R, Pasuquin, E.

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Internal nutrient efficiencies of irrigated lowland rice in tropical and subtropical Asia by Witt, C., Dobermann, A., Abdulrachman, S., Gines, H.C., Guanghuo, Wang, Nagarajan, R., Satawatananont, S., Thuc Son, Tran, Sy Tan, Pham, Van Tiem, Le, Simbahan, G.C, Olk, D.C.

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Opportunities for increased nitrogen-use efficiency from improved resource management in irrigated rice systems by Cassman, K.G., Peng, S., Olk, D.C., Ladha, J.K., Reichardt, W., Dobermann, A., Singh, U.

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Reduction of potassium fixation by 2 humic-acid fractions in vermiculitic soils by Olk, D.C., Cassman, K.G.

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Microbial Biomass and Organic Matter Turnover in Wetland Rice Soils by Gaunt, J.L., Neue, H.U., Cassman, K.G., Olk, D.C., Arah, J. R. M., Witt, C., Ottow, J. C. G., Grant, I.F.

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Characterization of 2 humic-acid fractions from a calcareous vermiculitic soil - implications for the humification process by Olk, D.C., Cassman, K.G., Fan, T.W.M.

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