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http://www.linkedin.com/in/keithdshepherd

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Works (50 of 129)

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Page 1 of 3

A global soil spectral grid based on space sensing

Science of the Total Environment
2025 | Journal article
EID:

2-s2.0-85217952120

Part of ISSN: 18791026 00489697
Contributors: Demattê, J.A.M.; Rizzo, R.; Rosin, N.A.; Poppiel, R.R.; Novais, J.J.M.; Amorim, M.T.A.; Rodriguez-Albarracín, H.S.; Rosas, J.T.F.; Bartsch, B.D.A.; Vogel, L.G. et al.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Application of a Handheld Near Infrared Spectrophotometer to Farm-Scale Soil Carbon Monitoring

European Journal of Soil Science
2025 | Journal article
EID:

2-s2.0-85216855866

Part of ISSN: 13652389 13510754
Contributors: Sanderman, J.; Partida, C.; Safanelli, J.L.; Shepherd, K.; Ge, Y.; Mitu, S.M.; Ferguson, R.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Modelling and mapping maize yields and making fertilizer recommendations with uncertain soil information

Precision Agriculture
2025 | Journal article
EID:

2-s2.0-85211161526

Part of ISSN: 15731618 13852256
Contributors: Takoutsing, B.; Heuvelink, G.B.M.; Aynekulu, E.; Shepherd, K.D.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Building a near-infrared (NIR) soil spectral dataset and predictive machine learning models using a handheld NIR spectrophotometer

Data in Brief
2025-02 | Journal article
Contributors: Colleen Partida; Jose Lucas Safanelli; Sadia Mannan Mitu; Mohammad Omar Faruk Murad; Yufeng Ge; Richard Ferguson; Keith Shepherd; Jonathan Sanderman
Source: check_circle
Crossref
grade
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Controls on timescales of soil organic carbon persistence across sub-Saharan Africa

Global Change Biology
2024 | Journal article
EID:

2-s2.0-85179354688

Part of ISSN: 13652486 13541013
Contributors: von Fromm, S.F.; Doetterl, S.; Butler, B.M.; Aynekulu, E.; Berhe, A.A.; Haefele, S.M.; McGrath, S.; Shepherd, K.D.; Six, J.; Tamene, L. et al.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier
grade
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Evaluating consistency across multiple NeoSpectra (compact Fourier transform near-infrared) spectrometers for estimating common soil properties

Soil Science Society of America Journal
2024 | Journal article
EID:

2-s2.0-85191177970

Part of ISSN: 14350661 03615995
Contributors: Mitu, S.M.; Smith, C.; Sanderman, J.; Ferguson, R.R.; Shepherd, K.; Ge, Y.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier
grade
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Practical guidance for deciding whether to account for soil variability when managing for land health, agricultural production and climate resilience

Journal of Soil and Water Conservation
2023 | Journal article
EID:

2-s2.0-85180222198

Part of ISSN: 19413300 00224561
Contributors: Herrick, J.E.; Maynard, J.M.; Bestelmeyer, B.T.; Carey, C.J.; Salley, S.W.; Shepherd, K.; Stewart, Z.P.; Wills, S.A.; Ziadat, F.M.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Remote sensing of the Earth's soil color in space and time

Remote Sensing of Environment
2023 | Journal article
EID:

2-s2.0-85174587034

Part of ISSN: 00344257
Contributors: Rizzo, R.; Wadoux, A.M.J.-C.; Demattê, J.A.M.; Minasny, B.; Barrón, V.; Ben-Dor, E.; Francos, N.; Savin, I.; Poppiel, R.; Silvero, N.E.Q. et al.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

A global soil spectral calibration library and estimation service

Soil Security
2022 | Journal article
EID:

2-s2.0-85144838253

Part of ISSN: 26670062
Contributors: Shepherd, K.D.; Ferguson, R.; Hoover, D.; van Egmond, F.; Sanderman, J.; Ge, Y.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier
grade
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Accounting for analytical and proximal soil sensing errors in digital soil mapping

European Journal of Soil Science
2022 | Journal article
EID:

2-s2.0-85128822448

Part of ISSN: 13652389 13510754
Contributors: Takoutsing, B.; Heuvelink, G.B.M.; Stoorvogel, J.J.; Shepherd, K.D.; Aynekulu, E.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier
grade
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Assessment of essential micronutrient levels in common beans (Phaseolus vulgaris) in Kenya by total reflection X-ray fluorescence

X-Ray Spectrometry
2022 | Journal article
EID:

2-s2.0-85124518285

Part of ISSN: 10974539 00498246
Contributors: Nguli, M.; Gatari, M.J.; Shepherd, K.; Njenga, L.; Boman, J.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

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

Scientific Reports
2022 | Journal article
EID:

2-s2.0-85127229770

Part of ISSN: 20452322
Contributors: Prout, J.M.; Shepherd, K.D.; McGrath, S.P.; Kirk, G.J.D.; Hassall, K.L.; Haefele, S.M.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Mid-Infrared Reflectance Spectroscopy for Estimation of Soil Properties of Alfisols from Eastern India

Sustainability (Switzerland)
2022 | Journal article
EID:

2-s2.0-85129185189

Part of ISSN: 20711050
Contributors: Hati, K.M.; Sinha, N.K.; Mohanty, M.; Jha, P.; Londhe, S.; Sila, A.; Towett, E.; Chaudhary, R.S.; Jayaraman, S.; Coumar, M.V. et al.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

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

PLoS ONE
2022 | Journal article
EID:

2-s2.0-85122610823

Part of ISSN: 19326203
Contributors: Acquah, G.E.; Hernandez-Allica, J.; Thomas, C.L.; Dunham, S.J.; Towett, E.K.; Drake, L.B.; Shepherd, K.D.; McGrath, S.P.; Haefele, S.M.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier
grade
Preferred source (of 2)‎

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

PLoS ONE
2022 | Journal article
EID:

2-s2.0-85124014440

Part of ISSN: 19326203
Contributors: Ichami, S.M.; Karuku, G.N.; Sila, A.M.; Ayuke, F.O.; Shepherd, K.D.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Soils with seasonal climates have highest potential to stabilize carbon by minerals in sub-Saharan Africa

2022-03-28 | Preprint
Contributors: Sophie F. von Fromm; Sebastian Doetterl; Benjamin Butler; Susan Trumbore; Johan Six; Ermias Aynekulu; Asmeret Asefaw Berhe; Stephan Haefele; Steve McGrath; Keith Shepherd et al.
Source: check_circle
Crossref

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

Scientific Reports
2021 | Journal article
EID:

2-s2.0-85102749747

Part of ISSN: 20452322
Contributors: Hengl, T.; Miller, M.A.E.; Križan, J.; Shepherd, K.D.; Sila, A.; Kilibarda, M.; Antonijević, O.; Glušica, L.; Dobermann, A.; Haefele, S.M. et al.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Application of infrared spectroscopy for estimation of concentrations of macro- and micronutrients in rice in sub-Saharan Africa

Field Crops Research
2021 | Journal article
EID:

2-s2.0-85109513736

Part of ISSN: 03784290
Contributors: Johnson, J.-M.; Sila, A.; Senthilkumar, K.; Shepherd, K.D.; Saito, K.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Continental-scale controls on soil organic carbon across sub-Saharan Africa

SOIL
2021 | Journal article
EID:

2-s2.0-85108942857

Part of ISSN: 2199398X 21993971
Contributors: Von Fromm, S.F.; Hoyt, A.M.; Lange, M.; Acquah, G.E.; Aynekulu, E.; Berhe, A.A.; Haefele, S.M.; Mcgrath, S.P.; Shepherd, K.D.; Sila, A.M. et al.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier
grade
Preferred source (of 2)‎

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

PLoS Biology
2021 | Journal article
EID:

2-s2.0-85118634533

Part of ISSN: 15457885 15449173
Contributors: Miller, M.A.E.; Shepherd, K.D.; Kisitu, B.; Collinson, J.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier
grade
Preferred source (of 2)‎

No changes in soil organic carbon and nitrogen following long-term prescribed burning and livestock exclusion in the Sudan-savanna woodlands of Burkina Faso

Basic and Applied Ecology
2021 | Journal article
EID:

2-s2.0-85112319214

Part of ISSN: 16180089 14391791
Contributors: Aynekulu, E.; Sileshi, G.W.; Rosenstock, T.S.; van Noordwijk, M.; Tsegaye, D.; Koala, J.; Sawadogo, L.; Milne, E.; de Leeuw, J.; Shepherd, K.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Stochastic simulation of restoration outcomes for a dry afromontane forest landscape in northern Ethiopia

Forest Policy and Economics
2021 | Journal article
EID:

2-s2.0-85100375614

Part of ISSN: 13899341
Contributors: Tamba, Y.; Wafula, J.; Whitney, C.; Luedeling, E.; Yigzaw, N.; Negussie, A.; Muchiri, C.; Gebru, Y.; Shepherd, K.; Aynekulu, E.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

The central African soil spectral library: A new soil infrared repository and a geographical prediction analysis

SOIL
2021 | Journal article
EID:

2-s2.0-85118232281

Part of ISSN: 2199398X 21993971
Contributors: Summerauer, L.; Baumann, P.; Ramirez-Lopez, L.; Barthel, M.; Bauters, M.; Bukombe, B.; Reichenbach, M.; Boeckx, P.; Kearsley, E.; Van Oost, K. et al.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

What is a good level of soil organic matter? An index based on organic carbon to clay ratio

European Journal of Soil Science
2021 | Journal article
EID:

2-s2.0-85087715629

Part of ISSN: 13652389 13510754
Contributors: Prout, J.M.; Shepherd, K.D.; McGrath, S.P.; Kirk, G.J.D.; Haefele, S.M.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Estimation of soil properties with mid-infrared soil spectroscopy across yam production landscapes in West Africa

SOIL
2021-10-27 | Journal article
Contributors: Philipp Baumann; Juhwan Lee; Emmanuel Frossard; Laurie Paule Schönholzer; Lucien Diby; Valérie Kouamé Hgaza; Delwende Innocent Kiba; Andrew Sila; Keith Sheperd; Johan Six
Source: check_circle
Crossref

Estimation of soil properties with mid-infrared soil spectroscopy across yam production landscapes in West Africa

2021-01-18 | Preprint
Contributors: Philipp Baumann; Juhwan Lee; Emmanuel Frossard; Laurie Paule Schönholzer; Lucien Diby; Valérie Kouamé Hgaza; Delwende Innocent Kiba; Andrew Sila; Keith Sheperd; Johan Six
Source: check_circle
Crossref

A Knowledge Brokering Framework for Integrated Landscape Management

Frontiers in Sustainable Food Systems
2020 | Journal article
EID:

2-s2.0-85082681191

Part of ISSN: 2571581X
Contributors: McGonigle, D.F.; Rota Nodari, G.; Phillips, R.L.; Aynekulu, E.; Estrada-Carmona, N.; Jones, S.K.; Koziell, I.; Luedeling, E.; Remans, R.; Shepherd, K. et al.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

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

PLoS ONE
2020 | Journal article
EID:

2-s2.0-85097807809

Part of ISSN: 19326203
Contributors: Towett, E.K.; Drake, L.B.; Acquah, G.E.; Haefele, S.M.; McGrath, S.P.; Shepherd, K.D.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

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

PLoS ONE
2020 | Journal article
EID:

2-s2.0-85086051030

Part of ISSN: 19326203
Contributors: Yet, B.; Lamanna, C.; Shepherd, K.D.; Rosenstock, T.S.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

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

Geoderma
2020 | Journal article
EID:

2-s2.0-85086078893

Part of ISSN: 00167061
Contributors: Butler, B.M.; Palarea-Albaladejo, J.; Shepherd, K.D.; Nyambura, K.M.; Towett, E.K.; Sila, A.M.; Hillier, S.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Soil and farm management effects on yield and nutrient concentrations of food crops in East Africa

Science of the Total Environment
2020 | Journal article
EID:

2-s2.0-85078996470

Part of ISSN: 18791026 00489697
Contributors: Fischer, S.; Hilger, T.; Piepho, H.-P.; Jordan, I.; Karungi, J.; Towett, E.; Shepherd, K.; Cadisch, G.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Soil spatial variation to guide the development of fertilizer use recommendations for smallholder farms in western Kenya

Geoderma Regional
2020 | Journal article
EID:

2-s2.0-85085967223

Part of ISSN: 23520094
Contributors: Ichami, S.M.; Shepherd, K.D.; Hoffland, E.; Karuku, G.N.; Stoorvogel, J.J.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Continental-scale controls on soil organic carbon across sub-Saharan Africa

2020-10-26 | Preprint
Contributors: Sophie F. von Fromm; Alison M. Hoyt; Gifty E. Acquah; Ermias Aynekulu; Asmeret Asefaw Berhe; Stephan M. Haefele; Markus Lange; Steve P. McGrath; Keith D. Shepherd; Andrew M. Sila et al.
Source: check_circle
Crossref

Supplementary material to "Continental-scale controls on soil organic carbon across sub-Saharan Africa"

2020-10-26 | Preprint
Contributors: Sophie F. von Fromm; Alison M. Hoyt; Gifty E. Acquah; Ermias Aynekulu; Asmeret Asefaw Berhe; Stephan M. Haefele; Markus Lange; Steve P. McGrath; Keith D. Shepherd; Andrew M. Sila et al.
Source: check_circle
Crossref

A Planetary Health Perspective on Agroforestry in Sub-Saharan Africa

One Earth
2019 | Journal article
EID:

2-s2.0-85086385765

Part of ISSN: 25903322 25903330
Contributors: Rosenstock, T.S.; Dawson, I.K.; Aynekulu, E.; Chomba, S.; Degrande, A.; Fornace, K.; Jamnadass, R.; Kimaro, A.; Kindt, R.; Lamanna, C. et al.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

A simple field based method for rapid wood density estimation for selected tree species in Western Kenya

Scientific African
2019 | Journal article
EID:

2-s2.0-85071618487

Part of ISSN: 24682276
Contributors: Olale, K.; Yenesew, A.; Jamnadass, R.; Sila, A.; Shepherd, K.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Fertilizer response and nitrogen use efficiency in African smallholder maize farms

Nutrient Cycling in Agroecosystems
2019 | Journal article
EID:

2-s2.0-85056741933

Part of ISSN: 15730867 13851314
Contributors: Ichami, S.M.; Shepherd, K.D.; Sila, A.M.; Stoorvogel, J.J.; Hoffland, E.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Forest restoration: Overlooked constraints

Science
2019 | Journal article
EID:

2-s2.0-85073604380

Part of ISSN: 10959203 00368075
Contributors: Luedeling, E.; Börner, J.; Amelung, W.; Schiffers, K.; Shepherd, K.; Rosenstock, T.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

FTIR-DRIFTS-based prediction of β-carotene, α-tocopherol and l-ascorbic acid in mango (Mangifera indica L.) fruit pulp

SN Applied Sciences
2019 | Journal article
EID:

2-s2.0-85100769613

Part of ISSN: 25233971
Contributors: Olale, K.; Walyambillah, W.; Mohammed, S.A.; Sila, A.; Shepherd, K.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Improving development efficiency through decision analysis: Reservoir protection in Burkina Faso

Environmental Modelling and Software
2019 | Journal article
EID:

2-s2.0-85062154196

Part of ISSN: 13648152
Contributors: Lanzanova, D.; Whitney, C.; Shepherd, K.; Luedeling, E.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier
grade
Preferred source (of 2)‎

Near-infrared, mid-infrared or combined diffuse reflectance spectroscopy for assessing soil fertility in rice fields in sub-Saharan Africa

Geoderma
2019 | Journal article
EID:

2-s2.0-85069677022

Part of ISSN: 00167061
Contributors: Johnson, J.-M.; Vandamme, E.; Senthilkumar, K.; Sila, A.; Shepherd, K.D.; Saito, K.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

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

Geoderma
2019 | Journal article
EID:

2-s2.0-85054292883

Part of ISSN: 00167061
Contributors: Butler, B.M.; Sila, A.M.; Shepherd, K.D.; Nyambura, M.; Gilmore, C.J.; Kourkoumelis, N.; Hillier, S.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Readily available concentrations of selected micronutrients and harmful metals in soils of Sub-Saharan Africa

Geoderma
2019 | Journal article
EID:

2-s2.0-85064188816

Part of ISSN: 00167061
Contributors: Keskinen, R.; Nyambura, M.; Heikkinen, J.; Sila, A.; Eurola, M.; Towett, E.; Shepherd, K.; Esala, M.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

An assessment of the variation of soil properties with landscape attributes in the highlands of Cameroon

Land Degradation and Development
2018 | Journal article
EID:

2-s2.0-85050923521

Part of ISSN: 1099145X 10853278
Contributors: Takoutsing, B.; Weber, J.C.; Rodríguez Martín, J.A.; Shepherd, K.; Aynekulu, E.; Sila, A.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Probabilistic assessment of investment options in honey value chains in Lamu County, Kenya

Frontiers in Applied Mathematics and Statistics
2018 | Journal article
EID:

2-s2.0-85062149913

Part of ISSN: 22974687
Contributors: Wafula, J.; Karimjee, Y.; Tamba, Y.; Malava, G.; Muchiri, C.; Koech, G.; De Leeuw, J.; Nyongesa, J.; Shepherd, K.; Luedeling, E.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Probabilistic Decision Tools for Determining Impacts of Agricultural Development Policy on Household Nutrition

Earth's Future
2018 | Journal article
EID:

2-s2.0-85043301535

Part of ISSN: 23284277
Contributors: Whitney, C.W.; Lanzanova, D.; Muchiri, C.; Shepherd, K.D.; Rosenstock, T.S.; Krawinkel, M.; Tabuti, J.R.S.; Luedeling, E.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier
grade
Preferred source (of 2)‎

Application of DRIFT-FTIR spectroscopy for quantitative prediction of simple sugars in two local and two Floridian mango (Mangifera indica L.) cultivars in Kenya

Journal of Analytical Science and Technology
2017 | Journal article
EID:

2-s2.0-85071247277

Part of ISSN: 20933371 20933134
Contributors: Olale, K.; Walyambillah, W.; Mohammed, S.A.; Sila, A.; Shepherd, K.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Collecting the Dirt on Soils: Advancements in Plot-Level Soil Testing and Implications for Agricultural Statistics

SSRN
2017 | Other
EID:

2-s2.0-85116144184

Part of ISSN: 15565068
Contributors: Carletto, C.; Aynekulu, E.; Gourlay, S.; Shepherd, K.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Evaluating regression-kriging for mid-infrared spectroscopy prediction of soil properties in western Kenya

Geoderma Regional
2017 | Journal article
EID:

2-s2.0-85018644567

Part of ISSN: 23520094
Contributors: Sila, A.; Pokhariyal, G.; Shepherd, K.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier

Landscape approach to assess key soil functional properties in the highlands of Cameroon: Repercussions of spatial relationships for land management interventions

Journal of Geochemical Exploration
2017 | Journal article
EID:

2-s2.0-85016592521

Part of ISSN: 03756742
Contributors: Takoutsing, B.; Martín, J.A.R.; Weber, J.C.; Shepherd, K.; Sila, A.; Tondoh, J.
Source: Self-asserted source
Keith Shepherd via Scopus - Elsevier
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