J. Spargo

发表

Reduced‐Tillage Organic Corn Production in a Hairy Vetch Cover Crop

J. Maul, M. Cavigelli, J. Teasdale, 2012 .

Conservation tillage issues: Cover crop-based organic rotational no-till grain production in the mid-Atlantic region, USA

J. Maul, T. Way, Gustavo Camargo, 2012, Renewable Agriculture and Food Systems.

A survey of turfgrass irrigation water quality in Pennsylvania

J. Spargo, P. Landschoot, B. McGraw, 2022, Crop, Forage & Turfgrass Management.

Permanganate Oxidizable Carbon Reflects a Processed Soil Fraction that is Sensitive to Management

Rattan Lal, Johan Six, Michelle M. Wander, 2012 .

Continuous No-till Management: Implications for Soil Quality, Carbon Sequestration, and Nitrogen Conservation

J. Spargo, 2008 .

Strengths and Limitations of Nitrogen Rate Recommendations for Corn and Opportunities for Improvement

John E. Sawyer, Quirine M. Ketterings, Peter M. Kyveryga, 2018 .

Nitrogen Competition between Corn and Weeds in Soils under Organic and Conventional Management

M. Cavigelli, Hanna J. Poffenbarger, M. Kramer, 2015, Weed Science.

Water-Extractable Phosphorus in Animal Manure and Manure Compost: Quantities, Characteristics, and Temporal Changes.

D. Beegle, P. Kleinman, Jian Liu, 2018, Journal of environmental quality.

Cadmium phytoextraction by Helianthus annuus (sunflower), Brassica napus cv Wichita (rapeseed), and Chyrsopogon zizanioides (vetiver).

P. Drohan, M. Guiltinan, S. Maximova, 2020, Chemosphere.

Biomass and Nitrogen Content of Hairy Vetch–Cereal Rye Cover Crop Mixtures as Influenced by Species Proportions

J. Maul, M. Cavigelli, R. Weil, 2015 .

Overcoming Weed Management Challenges in Cover Crop–Based Organic Rotational No-Till Soybean Production in the Eastern United States

M. Wells, M. Ryan, J. Teasdale, 2013, Weed Technology.

Illinois Soil Nitrogen Test for Prediction of Fertilizer Nitrogen Needs of Corn in Virginia

M. Alley, W. Thomason, J. Spargo, 2009 .

Soil nitrogen conservation with continuous no-till management

M. Alley, R. Follett, J. Spargo, 2008, Nutrient Cycling in Agroecosystems.

Organic Supplemental Nitrogen Sources for Field Corn Production after a Hairy Vetch Cover Crop

M. Cavigelli, J. Meisinger, S. Mirsky, 2016 .

Soil Fertility and Plant Nutrition

J. McGrath, C. Penn, J. Spargo, 2014 .

Characteristics of solids produced from coal mine drainage and their suitability for phosphorus control in dairy manure management.

R. Hedin, J. Spargo, B. Hedin, 2020, Journal of environmental quality.

FRST: A national soil testing database to improve fertility recommendations

Dan K. Arthur, J. McGrath, D. Osmond, 2020, Agricultural & Environmental Letters.

Modification of the Illinois Soil Nitrogen Test to Improve Measurement Precision and Increase Sample Throughput

M. Alley, J. Spargo, 2008 .

Base cation saturation ratios vs. sufficiency level of nutrients: A false dichotomy in practice

Vijayasatya N. Chaganti, S. Culman, D. Jackson‐Smith, 2021, Agronomy Journal.

Repeated compost application effects on phosphorus runoff in the Virginia Piedmont.

M. Alley, G. Evanylo, J. Spargo, 2006, Journal of environmental quality.

Soil and water environmental effects of fertilizer-, manure-, and compost-based fertility practices in an organic vegetable cropping system

D. Starner, K. Haering, G. Evanylo, 2008 .

The Soiltestcorr R Package: An Accessible Framework for Reproducible Correlation Analysis of Crop Yield and Soil Test Data

I. Ciampitti, C. Bolster, D. Osmond, 2023, SSRN Electronic Journal.

Long‐term Effects of Nitrogen and Potassium Fertilization on Perennial Ryegrass Turf

J. Spargo, M. Dacosta, J. S. Ebdon, 2013 .

Legume Cover Crops Reduce Poultry Litter Application Requirements in Organic Systems

M. Cavigelli, S. Mirsky, J. Spargo, 2019, Agronomy Journal.

Organic grain cropping systems to enhance ecosystem services

M. Cavigelli, J. Doran, J. Teasdale, 2013, Renewable Agriculture and Food Systems.

Legume Proportion, Poultry Litter, and Tillage Effects on Cover Crop Decomposition

Steven B. Mirsky, Michel A. Cavigelli, Ray R. Weil, 2015 .

Mineralizable soil nitrogen and labile soil organic matter in diverse long-term cropping systems

J. Maul, M. Cavigelli, J. Meisinger, 2011, Nutrient Cycling in Agroecosystems.

Mineralization and N Fertilizer Equivalent Value of Composts as Assessed by Tall Fescue (Festuca arundinacea)

J. Spargo, C. Bowden, G. Evanylo, 2007 .

Assessing Tillage Systems for Reducing Ammonia Volatilization from Spring-Applied Slurry Manure

A. Sadeghpour, M. Hashemi, S. Herbert, 2015 .

Characterizing Cereal Rye Biomass and Allometric Relationships across a Range of Fall Available Nitrogen Rates in the Eastern United States

M. Ryan, H. Schomberg, S. Mirsky, 2017 .

Biochar Application and Drought Stress Effects on Physiological Characteristics of Silybum marianum

A. Sadeghpour, M. Hashemi, J. Spargo, 2016 .

Changes in Soil Organic Carbon and Nitrogen Fractions with Duration of No-Tillage Management

Cleiton H. Sequeira, J. Maul, M. Cavigelli, 2012 .

Soil carbon sequestration with continuous no-till management of grain cropping systems in the Virginia coastal plain

M. M. Alley, Ronald F. Follett, M. Alley, 2008 .

Cover Crop and Poultry Litter Management Influence Spatiotemporal Availability of Topsoil Nitrogen

M. Cavigelli, J. Meisinger, R. Weil, 2015 .

Minimum dataset and metadata guidelines for soil‐test correlation and calibration research

S. Culman, J. McGrath, D. Osmond, 2021, Soil Science Society of America Journal.

Strong Acid Extraction Methods for “Total Phosphorus” in Soils: EPA Method 3050B and EPA Method 3051

J. Spargo, C. Church, Sarah K. Fishel, 2017 .

Increasing Crop Rotation Diversity Improves Agronomic, Economic, and Environmental Performance of Organic Grain Cropping Systems at the USDA‐ARS Beltsville Farming Systems Project

M. Cavigelli, J. Teasdale, J. Spargo, 2013 .

Hairy Vetch Biomass across the Eastern United States: Effects of Latitude, Seeding Rate and Date, and Termination Timing

M. Hashemi, S. Cordeau, M. Ryan, 2017 .

Availability and Surface Runoff of Phosphorus from Compost Amended Mid-Atlantic Soils

J. Spargo, 2004 .