A5054506242- Soil Carbon and Nitrogen Dynamics
- Soil and Water Nutrient Dynamics
- Invertebrate Taxonomy and Ecology
- Phosphorus and nutrient management
- Soil erosion and sediment transport
- Soil Management and Crop Yield
- Composting and Vermicomposting Techniques
- Heavy metals in environment
- Study of Mite Species
- Chromium effects and bioremediation
- Clay minerals and soil interactions
- Iron oxide chemistry and applications
- Agricultural pest management studies
- Atmospheric and Environmental Gas Dynamics
- Plant and animal studies
- Agriculture and Rural Development Research
- Marine and environmental studies
- Banana Cultivation and Research
- Collembola Taxonomy and Ecology Studies
- Rangeland and Wildlife Management
- Soil Geostatistics and Mapping
- Insect and Arachnid Ecology and Behavior
- Peatlands and Wetlands Ecology
- Crop Yield and Soil Fertility
- Geochemistry and Elemental Analysis
Lincoln University - Missouri
2019-2024
University of Missouri
2019-2024
Missouri College
2023
Colorado State University
2011-2021
The Ohio State University
2017-2018
University of Wyoming
2012-2016
Wageningen University & Research
2012-2015
Wyoming Department of Education
2012
International Center for Tropical Agriculture
2012
Soil organisms, including earthworms, are a key component of terrestrial ecosystems. However, little is known about their diversity, distribution, and the threats affecting them. We compiled global dataset sampled earthworm communities from 6928 sites in 57 countries as basis for predicting patterns abundance, biomass. found that local species richness abundance typically peaked at higher latitudes, displaying opposite to those observed aboveground organisms. high dissimilarity across...
Core Ideas POXC and mineralizable C were evaluated across diverse agroecosystems. The two are related but differentially influenced by management practices. better reflected SOM stabilizing Mineralizable mineralizing Both predicted agronomic performance than other soil fractions. Permanganate‐oxidizable (POXC) (as determined short‐term aerobic incubation of rewetted soil) measures active organic matter that may provide early indication stabilization mineralization processes. To date, the...
Core Ideas The extraction protocol for “glomalin” extracts protein from a wide variety of sources. term glomalin or glomalin‐related soil is inaccurate and limits the utility method. extracted pool should be viewed more broadly as health indicator potentially available organic N. Increased interest in practical, routine evaluation has created need rapid inexpensive indicators that reflect nitrogen (N) status. Here we propose measurement an functionally relevant sensitive N can rapidly...
Core Ideas Inter‐laboratory variability for mineralizable C is greater than other commercial soil tests. Water content and direction of rewetting both affect values C. As a health indicator, should have standardized protocol. Analytical highly affected by type. Mineralizable C, or that respired upon the dried soil, common metric health, but still lacks widely accepted A protocol an essential first step in quality control needed robust test. Here we examined numerous sources laboratory...
Abstract Earthworms are an important soil taxon as ecosystem engineers, providing a variety of crucial functions and services. Little is known about their diversity distribution at large spatial scales, despite the availability considerable amounts local-scale data. Earthworm data, obtained from primary literature or provided directly by authors, were collated with information on site locations, including coordinates, habitat cover, properties. Datasets required, minimum, to include...
Core Ideas POXC, mineralizable‐C, and protein are emerging soil health indicators. POXC mineralizable‐C have analytical variability similar to OM via loss‐on‐ignition. Soil has smaller Mehlich‐3 extractable nutrients. indicators exhibit spatiotemporal a extent as routine nutrient tests. do not require greater sampling densities within field. Ideal suitable for evaluation would be rapid, cost‐effective, sensitive management, low variability. Permanganate‐oxidizable C (POXC), mineralizable C,...
On page 4 of our original article, we reported median values soil protein measurements for 2451 samples from a wide range soils in the US Mid-Atlantic, Midwest, and Northeast regions based on data presented supplement to Fine et al. (2017), "Statistics, Scoring Functions, Regional Analysis Comprehensive Soil Health Database." Recently, it came attention that change was made (2017). The previous were 9.0 (range: 1.3–31.1), 11.7 0–242.2), 14.5 2.2–60) mg g−1 coarse-, medium-, fine-textured...
Permanganate-oxidizable carbon (POXC), mineralizable (C), and protein are rapid inexpensive soil health indicators, which focus on the fast-cycling labile organic matter. We tested effect of processing (sieve size) measured values analytical variability (i.e., precision) each indicator. Soil samples were hand-sieved to < 8-mm, 2-mm, or ground pass through a 2-mm sieve. Mean POXC, C higher in than either 8-mm soils. Soils sieved significantly more likely soils result POXC protein, but sieve...
Core Ideas Dryland organic and no‐till wheat‐fallow systems impact GHG wheat yields. The system produced more grain yield than the in a dry year. had greater emissions during fallow period. Concerted effort toward reducing tillage is needed to reduce overall emission dryland wheat–fallow systems. In semiarid central Great Plains of United States, cropping intensification beyond traditional winter ( Triticum aestivum L.)–fallow rotation along with reduced can lead soil matter (SOM)...
Abstract Since the adoption of national rules for organic agriculture in United States, there has been a continued interest meeting crop nitrogen (N) needs using animal manure. However, lack consistent information on N supplying potential manure creates uncertainty farmers and often leads to overapplication, which can negatively impact both productivity environmental sustainability. We investigated short‐term mineralization microbial biomass carbon (MBC) (MBN) following dairy (DM) its...
Soil organic matter (SOM) fractions were determined using extraction‐, incubation‐, and density‐based fractionation techniques on samples collected from a range of furrow‐irrigated sugar beet ( Beta vulgaris L.) based rotations the same soil series farmers' fields in Wyoming. We hypothesized that extending period time between crops beyond 2‐yr beet–barley Hordeum vulgare (SB‐BA) rotation by adding perennial or annual legumes would lead to higher levels surface‐soil (0–15‐cm) C N. Four...
In sub-Saharan Africa, soil fertility depletion and limited access to mineral phosphorus (P) fertilizers are considered among the main constraints of crop productivity. The goal our work is make P fertilizer from locally available materials, thus reducing costs due importation transportation for smallholder-farmers with financial capacities. Cattle bones collected slaughterhouses were ground two fineness-level, acidified using coffee wastewater (pH ~4.3), then compared commercially...
Composted dairy manure (CDM) is among the management practices used in transitioning from a conventional to an organic agricultural system. The objectives of this study are evaluate impact several nitrogen (N) sources on: (i) soil C (SOC) and total N (STN) content; (ii) distribution fractions; (iii) mineralization. This was initiated 2007 on recently renovated alfalfa (Medicago sativa L.) field located at Agricultural Research, Development Education Center near Fort Collins, Colorado. type...