A5079109839- Soil Carbon and Nitrogen Dynamics
- Soil and Water Nutrient Dynamics
- Soil Geostatistics and Mapping
- Soil and Unsaturated Flow
- Soil Management and Crop Yield
- Crop Yield and Soil Fertility
- Soil erosion and sediment transport
- Soil and Land Suitability Analysis
- Plant nutrient uptake and metabolism
- Agriculture, Soil, Plant Science
- Geochemistry and Geologic Mapping
- Landfill Environmental Impact Studies
- Turfgrass Adaptation and Management
- Organic Food and Agriculture
- Ruminant Nutrition and Digestive Physiology
- Agronomic Practices and Intercropping Systems
- Rice Cultivation and Yield Improvement
- Hydrology and Watershed Management Studies
- Plant Pathogens and Fungal Diseases
- Rangeland and Wildlife Management
- Composting and Vermicomposting Techniques
- Irrigation Practices and Water Management
- Mineral Processing and Grinding
- Tree Root and Stability Studies
- Agriculture Sustainability and Environmental Impact
Cornell University
2016-2025
Government of Canada
2022-2024
Agriculture and Agri-Food Canada
2022-2024
Dale Bumpers Small Farms Research Center
2022
Oregon State University
2022
Iowa State University
1988-2022
Center for Agricultural Resources Research
2022
Utah State University
2022
Institute of Crop Science
1992-2020
New York State College of Agriculture & Life Sciences
2017-2019
Core Ideas Nitrogen recommendations for individual corn fields are less accurate than desired. need improvement economic and environmental reasons. A review of fundamental concepts will improve understanding about N recommendations. Examination recommendation systems, tests, models fixation by the Haber–Bosch process has more doubled amount fixed on Earth, significantly influencing global cycle. Much this is made into fertilizer that used to produce nearly half world's food. Too much...
Core Ideas Summary statistics were developed from a robust multiregional soil health (SH) dataset. Active carbon, organic matter, and penetration resistance most useful indicators. Midwestern soils had relatively lower mean values for measured biological properties than Northeast or Mid‐Atlantic soils. Soil refers to the ability of function provide ecosystem services. The Comprehensive Assessment Health (CASH) is an approach that measures 15 physical, biological, chemical indicators, which...
Farmers, food supply-chain entities, and policymakers need a simple but robust indicator to demonstrate progress toward reducing nitrogen pollution associated with production. We show that balance-the difference between inputs outputs in an agricultural production system-is measure of losses is calculate, easily understood, based on readily available farm data. Nitrogen balance provides farmers means demonstrating increasingly concerned public they are succeeding while also improving the...
Soil organic carbon (SOC) is closely tied to soil health. However, additional biological indicators may also provide insight about C dynamics and microbial activity. We used SOC the other (potential mineralization, permanganate oxidizable C, water extractable β-glucosidase enzyme activity) from North American Project Evaluate Health Measurements examine continental-scale drivers of these indicators, relationships among effects health practices on indicator values. All had greater values at...
Soil microbiomes are sensitive to current and previous soil conditions, bacterial 'bioindicators' of biological, physical, chemical properties have considerable potential for health assessment. However, the lack ecological or physiological information most microorganisms limits our ability interpret associations bioindicators and, thus, their utility guiding management. We identified tillage intensity twelve used rate using a 16S rRNA gene-based survey farmland across North America. then...
Rising concerns about greenhouse gases, increased fuel prices, and the potential for new high value agricultural products have raised interest in use of maize stover bioenergy production. However, residue harvest must be weighed against negative impacts on soil quality. This study, conducted Chazy, NY, evaluated long‐term effects 32 yr ( Zea mays L.) vs. return quality surface layer (5–66 mm) under plow till (PT) no‐till (NT) systems a Raynham silt loam (coarse‐silty, mixed, active, nonacid,...
Historical trends and levels of nitrogen (N) budgets emissions to air water in the European Union United States are markedly different. Agro-environmental policy approaches also differ, with emphasis on voluntary or incentive-based schemes versus a more regulatory approach Union. This paper explores implications these differences for attaining long-term targets quality. Nutrient surplus problems were severe than during 1970s 1980s. The EU Nitrates National Emission Ceilings directives...
Core Ideas Soil health metrics were sensitive in North Carolina soils. Tillage intensity and fertility practices especially differentiated by biological soil metrics. associated with labile organic matter correlated well crop yields. (SH) refers to the ability of a function provide ecosystem services. This study reanalyzes data from long‐term agronomic management experiments addresses previous conclusions regarding utility SH test Data for 15 indicators Comprehensive Assessment Health (CASH)...
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...
Abstract The concept of soil health has evolved over the past several decades, recognizing that dynamic property response to management and land use is highly dependent on site‐specific factors must be considered when interpreting measurements. Initially, Soil Management Assessment Framework (SMAF) Comprehensive Health (CASH) were developed used globally for scoring indicators. However, both SMAF CASH frameworks using a relatively small dataset their interpretation curves not validated at...
Abstract Specialty coffee markets that recognize coffee‐quality price premiums can improve business conditions for smallholders and promote agro‐ecological practices. We studied the Relationship Coffee Model (RCM), a model supports long‐term partnerships between buyers based on product quality. examined how biophysical production practices affect smallholders’ ability to participate in this model. Furthermore, we considered common unobservable variables driving growers’ participation such as...
Inherent soil properties often define the soil's basic functions, but human management can have superimposing impacts on quality of soil. It is therefore challenging to interpret Soil Health (SH) measurements in context a region's soils and cropping systems. We examined effects texture, dominant inherent property, system SH indicators for New York, USA soils. A dataset 1,750 samples was analyzed including Organic Matter (SOM), Permanganate-Oxidizable Carbon (POXC), Respiration (Resp),...
Cover crops are widely advocated for increasing soil organic carbon (SOC) levels, thereby benefiting health improvement and climate change mitigation. Few regional-scale studies have robustly explored SOC stocks under cover cropping, due to limited long-term experiments. We used the unique experimental data from North American Project Evaluate Soil Health Measurements conducted in 2019 address this issue. This study included 19 agricultural research sites with 36 pairs of cropping...
Autoclaved-citrate extractable soil protein (ACE protein, hereafter referred as "soil protein") is a novel biological health indicator that can indirectly capture soil's capacity to supply nitrogen (N) but relatively expensive assess. To explore cost saving options, dataset of 4,171 samples with texture, total carbon (C) and N, carbon-to-nitrogen ratio (C/N), permanganate-oxidizable (POXC), pH, magnesium (Mg) iron (Fe), was used develop three pedotransfer functions for protein. These...
Abstract Leaching loss as nitrate (NO 3 ) is a growing concern because of its potential effect on water resources. NO with drainage from subsurface‐drained field plots seeded to maize ( Zea mays L.) in 1992, 1993, and 1994 was measured two soil types (a clay loam loamy sand) for three N fertilization rates (22, 100, 134 kg ha −1 ). The 100 rate based the results presidedress test (PSNT). Nitrate nitrogen ‐N) leaching similar between fertilizer treatments at both sites first year after sod...
Abstract In studies of erosion, runoff, and infiltration, high soil variability may demand many replicate measurements rapid, inexpensive methodology. We developed a drop‐forming rainfall simulator in which flow through long, coiled capillary drip tubes is controlled by an adjustable Mariotte‐type bubbling tube. These rain simulators are inexpensive, rugged, simple to operate, easily transported, require minimal maintenance. Responses pressure head water temperature changes were determined...
Abstract Understanding the response of soil quality indicators to changes in management practices is essential for sustainable land management. Soil were measured 2 years under established experiments with varying histories and durations at four locations New York State. The Willsboro (clay loam) Aurora (silt 1992, comparing no-till (NT) plow-till (PT) corn ( Zea mays L.)–soybean Glycine max L.) rotation. Chazy trial was 1973 as a factorial experiment NT versus PT crop harvesting method...
Routine soil analyses provide an approach for assessment and monitoring of quality targeted implementation management practices, but suitable indicators are mostly undefined. We used three long-term experiments on several types where maize (Zea mays L.) was grown under different tillage (no till plow till), rotation (continuous after grass), harvesting (silage grain) methods to identify evaluating physical quality. Disturbed undisturbed samples were collected, laboratory-based performed...
Timing of manure application affects N leaching. This 3-yr study quantified losses from liquid on two soils, a Muskellunge clay loam and Stafford loamy sand, as affected by cropping system timing application. Dairy was applied at an annual rate 93 800 L ha(-1) replicated drained plots under continuous maize (Zea mays L.) in early fall, late spring, split spring. Variable rates supplemental sidedress fertilizer were needed. Manure orchardgrass (Dactylis glomerata applications fall with...