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Full-Text Articles in Life Sciences
Temporal Changes In The Nutrient Content Of Cattle Dung In The Nebraska Sandhills Ecosystem, Amanda Shine, Martha Mamo, Gandura O. Abagandura, Walter Schacht, Jerry Volesky
Temporal Changes In The Nutrient Content Of Cattle Dung In The Nebraska Sandhills Ecosystem, Amanda Shine, Martha Mamo, Gandura O. Abagandura, Walter Schacht, Jerry Volesky
Department of Agronomy and Horticulture: Faculty Publications
Dung excreted by cattle composes a significant portion of the nutrient inputs in a grazed ecosystem and can have wide-ranging effects on soil properties and vegetation. However, little research has been conducted on the nutrient dynamics of excreted dung in situ that has not been disturbed prior to field sampling. In this study, we analyzed 294 dung pats (1–24 days old) collected from a Nebraska Sandhills meadow to determine water-extractable organic carbon (WEOC), water-extractable nitrogen (WEN), water-extractable phosphorus (WEP), and percent dry matter (DM) changes over time. In addition, we investigated if sample handling - frozen storage – and the …
A Method For Visualizing Water Flow Through Modified Root Zones, Dallas M. Williams
A Method For Visualizing Water Flow Through Modified Root Zones, Dallas M. Williams
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
As the number of impervious surfaces in urban environments increases, the ability of modified root zones to infiltrate water is becoming more important. Current methods of tracing water flow through soil profiles include excavating large pits in situ or analyzing soil cores in the laboratory with computed tomography or magnetic resonance imaging. While useful, these methods may not be suitable for urban settings or practical in every laboratory. We propose a new method that is less invasive, does not require extensive technical equipment and can reliably trace water movement through the soil profile in order to calculate flow rate based …
Wayne E. Sabbe Arkansas Soil Fertility Studies 2020, Nathan A. Slaton
Wayne E. Sabbe Arkansas Soil Fertility Studies 2020, Nathan A. Slaton
Arkansas Agricultural Experiment Station Research Series
Rapid technological changes in crop management and production require that the research efforts be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies described within will allow producers to compare their practices with the university’s research efforts. Additionally, soil-test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.
Shotgun Metagenomic Sequencing Data Of Sunflower Rhizosphere Microbial Community In South Africa, Olubukola Oluranti Babalola, Temitayo Tosin Alawiye, Carlos M. Rodriguez Lopez, Ayansina Segun Ayangbenro
Shotgun Metagenomic Sequencing Data Of Sunflower Rhizosphere Microbial Community In South Africa, Olubukola Oluranti Babalola, Temitayo Tosin Alawiye, Carlos M. Rodriguez Lopez, Ayansina Segun Ayangbenro
Horticulture Faculty Publications
This dataset presents shotgun metagenomic sequencing of sunflower rhizosphere microbiome in Bloemhof, South Africa. Data were collected to decipher the structure and function in the sunflower microbial community. Illumina HiSeq platform using next generation sequencing of the DNA was carried out. The metagenome comprised 8,991,566 sequences totaling 1,607,022,279 bp size and 66% GC content. The metagenome was deposited into the NCBI database and can be accessed with the SRA accession number SRR10418054. An online metagenome server (MG RAST) using the subsystem database revealed bacteria had the highest taxonomical representation with 98.47%, eukaryote at 1.23%, and archaea at 0.20%. The most …
Wayne E. Sabbe Arkansas Soil Fertility Studies 2019, Nathan A. Slaton
Wayne E. Sabbe Arkansas Soil Fertility Studies 2019, Nathan A. Slaton
Arkansas Agricultural Experiment Station Research Series
Rapid technological changes in crop management and production require that the research efforts be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies described within will allow producers to compare their practices with the university’s research efforts. Additionally, soil-test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.
Statistical And Machine Learning Methods Evaluated For Incorporating Soil And Weather Into Corn Nitrogen Recommendations, Curtis J. Ransom, Newell R. Kitchen, James J. Camberato, Paul R. Carter, Richard B. Ferguson, Fabian G. Fernandez, David W. Franzen, Carrie A. M. Laboski, D. Brenton Myers, Emerson D. Nafziger, John E. Sawyer, John F. Shanahan
Statistical And Machine Learning Methods Evaluated For Incorporating Soil And Weather Into Corn Nitrogen Recommendations, Curtis J. Ransom, Newell R. Kitchen, James J. Camberato, Paul R. Carter, Richard B. Ferguson, Fabian G. Fernandez, David W. Franzen, Carrie A. M. Laboski, D. Brenton Myers, Emerson D. Nafziger, John E. Sawyer, John F. Shanahan
Department of Agronomy and Horticulture: Faculty Publications
Nitrogen (N) fertilizer recommendation tools could be improved for estimating corn (Zea mays L.) N needs by incorporating site-specific soil and weather information. However, an evaluation of analytical methods is needed to determine the success of incorporating this information. The objectives of this research were to evaluate statistical and machine learning (ML) algorithms for utilizing soil and weather information for improving corn N recommendation tools. Eight algorithms [stepwise, ridge regression, least absolute shrinkage and selection operator (Lasso), elastic net regression, principal component regression (PCR), partial least squares regression (PLSR), decision tree, and random forest] were evaluated using a dataset …
Tetracycline And Sulfonamide Antibiotic Resistance Genes In Soils From Nebraska Organic Farming Operations, Marylynn Cadena, Lisa M. Durso, Daniel N. Miller, Heidi M. Waldrip, B. L. Castleberry, Rhae A. Drijber, Charles S. Wortmann
Tetracycline And Sulfonamide Antibiotic Resistance Genes In Soils From Nebraska Organic Farming Operations, Marylynn Cadena, Lisa M. Durso, Daniel N. Miller, Heidi M. Waldrip, B. L. Castleberry, Rhae A. Drijber, Charles S. Wortmann
Department of Agronomy and Horticulture: Faculty Publications
There is widespread agreement that agricultural antibiotic resistance should be reduced, however, it is unclear from the available literature what an appropriate target for reduction would be. Organic farms provide a unique opportunity to disentangle questions of agricultural antibiotic drug use from questions of antibiotic resistance in the soil. In this study, soil was collected from 12 certified organic farms in Nebraska, evaluated for the presence of tetracycline and sulfonamide resistance genes (n = 15 targets), and correlated to soil physical, chemical, and biological parameters. Tetracycline and sulfonamide antibiotic resistance genes (ARGs) were found in soils from all 12 …
Isolation And Analysis Of Microbial Communities In Soil, Rhizosphere, And Roots In Perennial Grass Experiments, Morgan R. Mcpherson, Peng Wang, Robert B. Mitchell, Daniel P. Schachtman
Isolation And Analysis Of Microbial Communities In Soil, Rhizosphere, And Roots In Perennial Grass Experiments, Morgan R. Mcpherson, Peng Wang, Robert B. Mitchell, Daniel P. Schachtman
Department of Agronomy and Horticulture: Faculty Publications
Plant and soil microbiome studies are becoming increasingly important for understanding the roles microorganisms play in agricultural productivity. The purpose of this manuscript is to provide detail on how to rapidly sample soil, rhizosphere, and endosphere of replicated field trials and analyze changes that may occur in the microbial communities due to sample type, treatment, and plant genotype. The experiment used to demonstrate these methods consists of replicated field plots containing two, pure, warm-season grasses (Panicum virgatum and Andropogon gerardii) and a low-diversity grass mixture (A. gerardii, Sorghastrum nutans, and Bouteloua curtipendula). Briefly, plants …
Maize Genomes To Fields: 2014 And 2015 Field Season Genotype, Phenotype, Environment, And Inbred Ear Image Datasets, Naser Alkhalifah, Darwin A. Campbell, Celeste M. Falcon, Jack M. Gardiner, Nathan D. Miller, Maria Cinta Romay, Ramona Walls, Renee Walton, Cheng-Ting Yeh, Martin Bohn, Jessica Bubert, Edward S. Buckler, Ignacio Ciampitti, Sherry Flint-Garcia, Michael A. Gore, Christopher Graham, Candice Hirsch, James B. Holland, David Hooker, Shawn Kaeppler, Joseph Knoll, Nick Lauter, Elizabeth C. Lee, Aaron Lorenz, Jonathan P. Lynch, Stephen P. Moose, Seth C. Murray, Rebecca Nelson, Torbert Rocheford, Oscar Rodriguez, James C. Schnable, Brian Scully, Margaret Smith, Nathan Springer, Peter Thomison, Mitchell Tuinstra, Randall J. Wisser, Wenwei Xu, David Ertl, Patrick S. Schnable, Natalia De Leon, Edgar P. Spalding, Jode Edwards, Carolyn J. Lawrence-Dill
Maize Genomes To Fields: 2014 And 2015 Field Season Genotype, Phenotype, Environment, And Inbred Ear Image Datasets, Naser Alkhalifah, Darwin A. Campbell, Celeste M. Falcon, Jack M. Gardiner, Nathan D. Miller, Maria Cinta Romay, Ramona Walls, Renee Walton, Cheng-Ting Yeh, Martin Bohn, Jessica Bubert, Edward S. Buckler, Ignacio Ciampitti, Sherry Flint-Garcia, Michael A. Gore, Christopher Graham, Candice Hirsch, James B. Holland, David Hooker, Shawn Kaeppler, Joseph Knoll, Nick Lauter, Elizabeth C. Lee, Aaron Lorenz, Jonathan P. Lynch, Stephen P. Moose, Seth C. Murray, Rebecca Nelson, Torbert Rocheford, Oscar Rodriguez, James C. Schnable, Brian Scully, Margaret Smith, Nathan Springer, Peter Thomison, Mitchell Tuinstra, Randall J. Wisser, Wenwei Xu, David Ertl, Patrick S. Schnable, Natalia De Leon, Edgar P. Spalding, Jode Edwards, Carolyn J. Lawrence-Dill
Department of Agronomy and Horticulture: Faculty Publications
Objectives: Crop improvement relies on analysis of phenotypic, genotypic, and environmental data. Given large, well-integrated, multi-year datasets, diverse queries can be made: Which lines perform best in hot, dry environments? Which alleles of specific genes are required for optimal performance in each environment? Such datasets also can be leveraged to predict cultivar performance, even in uncharacterized environments. The maize Genomes to Fields (G2F) Initiative is a multi-institutional organization of scientists working to generate and analyze such datasets from existing, publicly available inbred lines and hybrids. G2F’s genotype by environment project has released 2014 and 2015 datasets to the public, with …
Assessing Explanatory Factors For Variation In On-Farm Irrigation In Us Maize-Soybean Systems, Katherine E.B. Gibson, Haishun S. Yang, Trenton E. Franz, Dean E. Eisenhauer, John B. Gates, Paolo Nasta, Bhupinder S. Farmaha, Patricio Grassini
Assessing Explanatory Factors For Variation In On-Farm Irrigation In Us Maize-Soybean Systems, Katherine E.B. Gibson, Haishun S. Yang, Trenton E. Franz, Dean E. Eisenhauer, John B. Gates, Paolo Nasta, Bhupinder S. Farmaha, Patricio Grassini
Department of Agronomy and Horticulture: Faculty Publications
Irrigation exhibits large variation across producer fields, even within same region and year. A knowledge gap exists relative to factors that explain this variation, in part due to lack of availability of high-quality irrigation data from multiple field-years. This study assessed sources of variation in irrigation using a large database collected during 9 years (2005–2013) from ca. 1400 maize and soybean producer fields in Nebraska, central USA (total of 12,750 field-year observations). The study area is representative of ca. 4.5 million ha of irrigated land sown with maize and soybean. Influence of biophysical (weather, soil, and crop type) and behavioral …
Soil Analysis Information Sheet, Utah State University
Soil Analysis Information Sheet, Utah State University
All Current Publications
No abstract provided.
Topsoil Quality Guidelines For Landscaping, Rich Koenig, Von Isaman
Topsoil Quality Guidelines For Landscaping, Rich Koenig, Von Isaman
Gardening
No abstract provided.
Solutions To Soil Problems: V. Low Organic Matter, Kevin Heaton, Rich Koenig
Solutions To Soil Problems: V. Low Organic Matter, Kevin Heaton, Rich Koenig
All Current Publications
Utah soils are inherently low in organic matter due to the desert climate and historically low plant growth rates. In Utah, soil organic matter levels are typically 0.25 to 1%, while regions with high rainfall such as the Midwest and Eastern United States have soils with as much as 7 to 10% organic matter.
Solutions To Soil Problems: Iv. Soil Structure, Rich Koenig, Teresa Cerny
Solutions To Soil Problems: Iv. Soil Structure, Rich Koenig, Teresa Cerny
All Current Publications
Soil structure refers to the combination of primary soil particles – sand, silt and clay – into larger units called aggregates or clods. Aggregates are commonly seen when a soil is tilled or disturbed.
Solutions To Soil Problems: Iii. Drainage, Michael Johnson, Rich Koenig
Solutions To Soil Problems: Iii. Drainage, Michael Johnson, Rich Koenig
All Current Publications
Drainage is a common problem throughout Utah. Complex patterns of soil development, transport and deposition have resulted in excessively drained soils that are coarse-textured (sandy or rocky), and poorly drained soils that are fine-textured (silt and clay-dominated). Excessively drained are more common in higher elevation and bench areas.
Understanding Your Soil Test Report, Grant E. Cardon, Jan Kotuby-Amacher, Pam Hole, Rich Koenig
Understanding Your Soil Test Report, Grant E. Cardon, Jan Kotuby-Amacher, Pam Hole, Rich Koenig
All Current Publications
Regular soil testing helps to develop and maintain more productive soils for farming, gardening, and landscaping. The purpose of this guide is to help you understand and interpret the results from a Utah State University soil test report. Additional Utah State University Extension bulletins are available, which address solutions to specific soil problems and offer guidance on fertilizer selection and use. See “Where to obtain additional information” at the end of this guide.
Understanding Your Soil Test Report, Grant E. Cardon, Jan Kotuby-Amacher, Pam Hole, Rich Koenig
Understanding Your Soil Test Report, Grant E. Cardon, Jan Kotuby-Amacher, Pam Hole, Rich Koenig
Gardening
No abstract provided.
Caneberry Irrigation, Brent Black, Robert Hill, Grant Cardon
Caneberry Irrigation, Brent Black, Robert Hill, Grant Cardon
All Current Publications
No abstract provided.
Soil: The Foundation Of The Garden, Larry A. Sagers
Soil: The Foundation Of The Garden, Larry A. Sagers
All Archived Publications
No abstract provided.
Water-Wise Lanscaping: Soil Preparation And Management, Rick Heflebower, Rich Koenig
Water-Wise Lanscaping: Soil Preparation And Management, Rick Heflebower, Rich Koenig
All Archived Publications
No abstract provided.
What Can I Do Now To Care For My Lawn?, Jerry Goodspeed
What Can I Do Now To Care For My Lawn?, Jerry Goodspeed
All Archived Publications
No abstract provided.
Keeping Your Soil Healthy, Dennis Hinkamp
Keeping Your Soil Healthy, Dennis Hinkamp
All Archived Publications
No abstract provided.
Can I Recycle Garden Waste Without Composting?, Jerry Goodspeed
Can I Recycle Garden Waste Without Composting?, Jerry Goodspeed
All Archived Publications
No abstract provided.
Fertilizer No Cure All, Dennis Hinkamp
Management Of Soil Organic Matter And Gypsum For Sustainable Production In The Carnarvon Horticultural District Of Western Australia, R.S.B. Greene, A.J. Lin, D. C. Parr
Management Of Soil Organic Matter And Gypsum For Sustainable Production In The Carnarvon Horticultural District Of Western Australia, R.S.B. Greene, A.J. Lin, D. C. Parr
Agriculture reports
Soil quality is critically important for the long-term production of high quality and high yielding fruit and vegetable crops in the Carnarvon horticultural district of Western Australia. A stable soil structure is essential for good soil quality.
Spare The Tiller, Spoil The Soil, Dennis Hinkamp
Spare The Tiller, Spoil The Soil, Dennis Hinkamp
All Archived Publications
No abstract provided.
Fungus - Nothing Cute About Fairy Rings, Dennis Hinkamp
Fungus - Nothing Cute About Fairy Rings, Dennis Hinkamp
All Current Publications
No abstract provided.
How Can I Control Mallor Weeds And What About Ants, Readers Ask, Steve Dewey, Jay B. Karren
How Can I Control Mallor Weeds And What About Ants, Readers Ask, Steve Dewey, Jay B. Karren
All Archived Publications
No abstract provided.
Nutrients - Vitamins For Your Soil, Dennis Hinkamp
Nutrients - Vitamins For Your Soil, Dennis Hinkamp
All Archived Publications
No abstract provided.
Assessment Of The Suitability For Horticulture Of The Packsaddle Infill Area, Kununurra, N Schoknecht
Assessment Of The Suitability For Horticulture Of The Packsaddle Infill Area, Kununurra, N Schoknecht
Resource management technical reports
A brief assessment of the suitability of 142 ha in the Packsaddle infill area for horticulture was conducted in late August 1993. Of this area 100 ha is Crown Land, and 42 ha was recently sold as freehold. Eleven map units based on soil and landform were identified, and their suitability for horticulture assessed. The map units were based on field observations and extrapolation from existing surveys.