10.4231/4Q9T-FT90
Darrell Schulze , Joshua Minai
11/18/2019
Map that mimics the geometry of 'fully developed slopes'.
Agronomy Geographic Information Systems (GIS) K-Means Clustering Multiresolution Ridgetop Flatness Multiresolution Valley Bottom Flatness Planform Curvature Profile Curvature Slope Position Terrain Attributes Topographic Position Index
10.4231/KYJ5-S732
Darrell Schulze , Joshua Minai
11/18/2019
Independent diagnostic criteria reflecting limitations for land use.
Agronomy Busia Area Decision Matrix Kenya Land Evaluation Key Map Unit
10.4231/0FGR-Z715
Darrell Schulze , Joshua Minai
11/18/2019
Independent predictor variables for stepwise multiple linear regression.
Agronomy Environmental Covariates PCA Raster Stack RStoolbox Package RStudio Soil-Landscape Modelling Stepwise Multiple linear Regression
10.4231/00R1-HM25
Darrell Schulze , Joshua Minai
11/18/2019
Soil property data mined from the Reconnaissance Soil Survey of the Busia Area (quarter degree sheet No. 101) for digital soil mapping.
Agronomy Busia Area Digital Soil Mapping Equal Area Quadratic Smoothing Spline Function Kenya R ithir Package RStudio
10.4231/7SH9-AD91
Dick Puurveen , Mekonnen Giweta , Miles Dyck , Sukdhev S. Malhi , Sylvie Quideau
02/08/2019
Data from 5 growing seasons (2013–2017) investigating long-term fertilization and crop rotation effects on growing season soil N2O and CO2 emissions, wheat yield and N uptake, N2O emission intensity and soil properties on a Gray Luvisol.
4R Agronomy IPNI Nitrous Oxide Soil Emissions Soil Fertility
10.4231/MDJM-0529
Dick Puurveen , Len Kryzanowski , Miles Dyck , Yuanpei Gao
02/08/2019
These data files summarize spring wheat yields and annual soil N2O emissions (non-steady-state chamber measurements) at two sites in Alberta, Canada (Lethbridge and Ellerslie) over 2016 and 2017.
4R Agronomy IPNI Nitrogen Fertilizer Nitrous Oxide Soil Emissions
10.4231/NSKN-0502
07/23/2019
Tillage affected relationships between N2O and NRE; stronger negative linear relationships under no-till and strip-till compared to moldboard. Ecological intensification increased grain yield without significant increase of N2O emission.
4R 4R N management Agronomy Climate Change Corn Crop Science Ecological Intensification Emission Factor Farmer's Practice Grain Nitrogen Uptake IPNI Purdue N Timing Nitrogen Recovery Efficiency Nitrogen Use Efficiency Nitrous Oxide Split N application Tillage Total Nitrogen Uptake Yield-Scaled N2O
10.4231/E81F-NX21
Darrell G Schulze , Joshua O Minai
12/04/2019
This study is to bring legacy soil data from the Busia area of Kenya ‘back to life’ using digital soil mapping techniques.
Agronomy Busia Area Digital Soil Mapping Disaggregation Kenya Legacy Soil Data
10.4231/C1W0-8F75
Jeffrey J. Volenec , Sylvie M. Brouder
12/18/2019
Grain and stover yield and composition were determined for maize grown in soil previously fertilized annually for 8 years with potassium (K, 0 to 400 kg K/ha) and phosphorus (P, 0 to 75 kg P/ha) resulting in large differences in soil test P and K.
Agronomy Biomass Corn Grain Yield Indiana Maize Phosphorus Fertilizer Plant Nutrition Potassium Fertilizer Seed Composition Soil Fertility Stover Composition
10.4231/WWSK-RA65
Jeffrey J. Volenec , Sylvie M. Brouder
12/18/2019
Maize was grown in 2006 in plots differing in soil test P and K. Yield and plant composition were determined.
Agronomy Corn Grain Yield Indiana Maize Phosphorus Fertilizer Plant Nutrition Potassium Fertilizer Soil Fertility Stover Composition
Display #
Results 1 - 10 of 21