Evaluating the utility of mid-infrared spectral subspaces for predicting soil properties

por Sila, Andrew M., Shepherd, Keith D., Pokhariyal, Ganesh P.
Publicado 2016

Evidence-based investment selection: Prioritizing agricultural development investments under climatic and socio-political risk using Bayesian networks

por Yet, Barbaros, Lamanna, Christine, Shepherd, Keith D., Rosenstock, Todd S.
Publicado 2020

iSDAsoil: The first continent-scale soil property map at 30 m resolution provides a soil information revolution for Africa

por Miller, Matthew A. E., Shepherd, Keith D., Kisitu, Bruce, Collinson, Jamie
Publicado 2021

Fertilizer response and nitrogen use efficiency in African smallholder maize farms

por Ichami, Stephen M., Shepherd, Keith D., Sila, Andrew M., Stoorvogel, Jetse J., Hoffland, Ellis
Publicado 2018

Applicability of near-infrared reflectance spectroscopy (NIRS) for determination of crude protein content in cowpea (Vigna unguiculata) leaves

por Towett, Erick K, Alex, Merle, Shepherd, Keith D, Polreich, Severin, Aynekulu, Ermias, Maass, Brigitte L
Publicado 2013

Spatial approach for diagnosis of yield-limiting nutrients in smallholder agroecosystem landscape using population-based farm survey data

por Ichami, Stephen M., Karuku, George N., Sila, Andrew M., Ayuke, Fredrick O., Shepherd, Keith D.
Publicado 2022

Pre-treatment of soil X-ray powder diffraction data for cluster analysis

por Butler, Benjamin M., Sila, Andrew M., Shepherd, Keith D., Nyambura, Mercy, Gilmore, Chris J., Kourkoumelis, Nikolaos, Hillier, Stephen
Publicado 2019

Comprehensive nutrient analysis in agricultural organic amendments through non-destructive assays using machine learning

por Towett, Erick K., Drake, Lee B., Acquah, Gifty E., Haefele, Stephan M., McGrath, Steve P., Shepherd, Keith D.
Publicado 2020

Mineral–nutrient relationships in African soils assessed using cluster analysis of X-ray powder diffraction patterns and compositional methods

por Butler, Benjamin M., Palarea-Albaladejo, Javier, Shepherd, Keith D., Nyambura, Kamau M., Towett, Erick K., Sila, Andrew M., Hillier, Stephen
Publicado 2020

Changes in organic carbon to clay ratios in different soils and land uses in England and Wales over time

por Prout, Jonah M., Shepherd, Keith D., McGrath, Steve P., Kirk, Guy J. D., Hassall, Kirsty L., Haefele, Stephan M.
Publicado 2022

Portable X-ray fluorescence (pXRF) calibration for analysis of nutrient concentrations and trace element contaminants in fertilisers

por Acquah, Gifty E., Hernandez-Allica, Javier, Thomas, Cathy L., Dunham, Sarah J., Towett, Erick K., Drake, Lee B., Shepherd, Keith D., McGrath, Steve P., Haefele, Stephan M.
Publicado 2022

Soil nutrient maps of Sub-Saharan Africa: assessment of soil nutrient content at 250 m spatial resolution using machine learning

por Hengl, Tomislav, Leenaars, Johan G. B., Shepherd, Keith D., Walsh, Markus G., Heuvelink, Gerard B. M., Mamo, Tekalign, Tilahun, Helina, Berkhout, Ezra, Cooper, Matthew, Fegraus, Eric, Wheeler, Ichsani, Kwabena, Nketia A.
Publicado 2017

Mapping Soil Properties of Africa at 250 m Resolution: Random Forests Significantly Improve Current Predictions

por Hengl, Tomislav, Heuvelink, Gerard B. M., Kempen, Bas, Leenaars, Johan G. B., Walsh, Markus G., Shepherd, Keith D., Sila, Andrew, MacMillan, Robert A., Mendes de Jesus, Jorge, Tamene, Lulseged, Tondoh, Jérôme E.
Publicado 2015

African soil properties and nutrients mapped at 30 m spatial resolution using two-scale ensemble machine learning

por Hengl, Tomislav, Miller, Matthew A. E., Križan, Josip, Shepherd, Keith D., Sila, Andrew, Kilibarda, Milan, Antonijević, Ognjen, Glušica, Luka, Dobermann, Achim, Haefele, Stephan M., McGrath, Steve P., Acquah, Gifty E., Collinson, Jamie, Parente, Leandro, Sheykhmousa, Mohammadreza, Saito, Kazuki, Johnson, Jean-Martial, Chamberlin, Jordan, Silatsa, Francis B. T., Yemefack, Martin, Wendt, John, MacMillan, Robert A., Wheeler, Ichsani, Crouch, Jonathan
Publicado 2021