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Browsing by Author "Saavedra Rivera, A. K."

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    Nitrogen Index 4.4. User Manual
    Gagliardi, P. M.; Delgado, Jorge A.; Rau, E. J.; Fry, R.; Figueroa, U.; Gross, C.; Cueto-Wong, J.; Shaffer, M. J.; Kowalski, K.; Neer, D.; Sotomayor-Ramirez, D.; Alwang, Jeffrey R.; Monar, Carlos; Escudero, Luis O.; Saavedra Rivera, A. K. (USDA ARS, 2011)
    User manual for a web-based tool to help farmers make optimal decisions about nitrogen application in degraded and other lands.
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    Soil organic matter characterization in Bolivia and Ecuador
    Mulvaney, Michael J.; Graham, M.; Xia, K.; Barrera, Victor H.; Botello, Rubén C.; Saavedra Rivera, A. K. (2012)
    Organic matter stabilization is thought to be a process of physical protection and chemical recalcitrance. The determination of recalcitrant soil organic carbon (SOC) often relies on operational definitions provided by various fractionation techniques, usually particle size or density fractionation. However, it is unknown if these operational definitions represent true chemical recalcitrance.