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- Department of Agronomy and Horticulture: Faculty Publications (44)
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- INTSORMIL Scientific Publications (2)
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Articles 1 - 30 of 61
Full-Text Articles in Life Sciences
Managing Threats To The Urban Forest: From Dutch Elm Disease To Emerald Ash Borer - Learning From Experience, Christopher J. Borman
Managing Threats To The Urban Forest: From Dutch Elm Disease To Emerald Ash Borer - Learning From Experience, Christopher J. Borman
Doctor of Plant Health Program: Dissertations and Student Research
The urban forest provides important essential services to all municipalities; however, its value is often overlooked. The urban forest contributes to energy savings, environmental benefits, psychological well-being, and social benefits. Managing the urban forest in a sustainable manner is important if we wish to benefit from these services well into the future. Reliable management techniques have been created through previous experiences with pests, and these should be utilized and improved for use on urban forests.
American elm (Ulmus americana L.) was once a major component of the urban forests of North America. In 1927, Dutch elm disease (DED) was …
Metabolic Engineering Of Oilseed Crops To Produce High Levels Of Novel Acetyl Glyceride Oils With Reduced Viscosity, Freezing Point And Calorific Value, Jinjie Liu, Adam Rice, Kathleen Mcglew, Vincent Shaw, Hyunwoo Park, Thomas E. Clemente, Mike Pollard, John Ohlrogge, Timothy P. Durrett
Metabolic Engineering Of Oilseed Crops To Produce High Levels Of Novel Acetyl Glyceride Oils With Reduced Viscosity, Freezing Point And Calorific Value, Jinjie Liu, Adam Rice, Kathleen Mcglew, Vincent Shaw, Hyunwoo Park, Thomas E. Clemente, Mike Pollard, John Ohlrogge, Timothy P. Durrett
Department of Agronomy and Horticulture: Faculty Publications
Seed oils have proved recalcitrant to modification for the production of industrially useful lipids. Here, we demonstrate the successful metabolic engineering and subsequent field production of an oilseed crop with the highest accumulation of unusual oil achieved so far in transgenic plants. Previously, expression of the Euonymus alatus diacylglycerol acetyltransferase (EaDAcT) gene in wild-type Arabidopsis seeds resulted in the accumulation of 45 mol% of unusual 3-acetyl-1,2- diacyl-sn-glycerols (acetyl-TAGs) in the seed oil (Durrett et al., 2010 PNAS 107:9464). Expression of EaDAcT in dgat1 mutants compromised in their ability to synthesize regular triacylglycerols increased acetyl-TAGs to 65 mol%. Camelina and soybean …
Functional Genomics And Microbiome Profiling Of The Asian Longhorned Beetle (Anoplophora Glabripennis) Reveal Insights Into The Digestive Physiology And Nutritional Ecology Of Wood Feeding Beetles, Erin D. Scully, Scott M. Geib, John E. Carlson, Ming Tien, Duane Mckenna, Kelli Hoover
Functional Genomics And Microbiome Profiling Of The Asian Longhorned Beetle (Anoplophora Glabripennis) Reveal Insights Into The Digestive Physiology And Nutritional Ecology Of Wood Feeding Beetles, Erin D. Scully, Scott M. Geib, John E. Carlson, Ming Tien, Duane Mckenna, Kelli Hoover
Department of Agronomy and Horticulture: Faculty Publications
Background: Wood-feeding beetles harbor an ecologically rich and taxonomically diverse assemblage of gut microbes that appear to promote survival in woody tissue, which is devoid of nitrogen and essential nutrients. Nevertheless, the contributions of these apparent symbionts to digestive physiology and nutritional ecology remain uncharacterized in most beetle lineages.
Results: Through parallel transcriptome profiling of beetle- and microbial- derived mRNAs, we demonstrate that the midgut microbiome of the Asian longhorned beetle (Anoplophora glabripennis), a member of the beetle family Cerambycidae, is enriched in biosynthetic pathways for the synthesis of essential amino acids, vitamins, and sterols. Consequently, the midgut …
Comprehensive Characterization And Rna-Seq Profiling Of The Hd-Zip Transcription Factor Family In Soybean (Glycine Max) During Dehydration And Salt Stress, Vikas Belamkar, Nathan T. Weeks, Arvind K. Bharti, Andrew Farmer, Michelle A. Graham, Steven B. Cannon
Comprehensive Characterization And Rna-Seq Profiling Of The Hd-Zip Transcription Factor Family In Soybean (Glycine Max) During Dehydration And Salt Stress, Vikas Belamkar, Nathan T. Weeks, Arvind K. Bharti, Andrew Farmer, Michelle A. Graham, Steven B. Cannon
Department of Agronomy and Horticulture: Faculty Publications
Background:
The homeodomain leucine zipper (HD-Zip) transcription factor family is one of the largest plant specific superfamilies, and includes genes with roles in modulation of plant growth and response to environmental stresses. Many HD-Zip genes are characterized in Arabidopsis (Arabidopsis thaliana), and members of the family are being investigated for abiotic stress responses in rice (Oryza sativa), maize (Zea mays), poplar (Populus trichocarpa) and cucumber (Cucmis sativus). Findings in these species suggest HD-Zip genes as high priority candidates for crop improvement.
Results:
In this study we have identified members of …
Nebline, Nov./Dec. 2014
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Feature: Tiny Tastes Can Total BIG CALORIES Over the Holiday Season
Food & Health
Family Living
Farm & Acreage
Home & Family Living
Horticulture
Pests & Wildlife
4-H & Youth
Extension Calendar
and other extension news and events
Nebline, October 2014
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Feature: Smart Snacking
Food & Health
Family Living
Farm & Acreage
Home & Family Living
Horticulture
Pests & Wildlife
4-H & Youth
Extension Calendar
and other extension news and events
Nebline, September 2014
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Feature: 4-H Youth Showcase Their Achievements at Super Fair
Food & Health
Family Living
Farm & Acreage
Home & Family Living
Horticulture
Pests & Wildlife
4-H & Youth
Extension Calendar
and other extension news and events
Cold Frames, High Tunnels, And Greenhouses: Choose A Growing Structure Best For You, Stacy A. Adams, Kim A. Todd
Cold Frames, High Tunnels, And Greenhouses: Choose A Growing Structure Best For You, Stacy A. Adams, Kim A. Todd
Department of Agronomy and Horticulture: Faculty Publications
Cold frames, high tunnels, and greenhouses are plant growth structures that can be used to extend the growing season or allow for use year around for growing high value specialty crops. This publication discusses the various attributes and applications of each so that plant producers in teaching, research, extension, commercially or as a hobby can determine the best structure to meet individual needs.
Cold frames, high tunnels, and greenhouses are structures that provide hobbyists and growers with options for plant protection and season extension. They vary in cost, size, structural complexity, and ability for year-round usage. The small cold frame …
Nebline, August 2014
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Feature: Cherry Creek Habitat Provides Opportunities for Pollinator Education
Food & Health
Family Living
Farm & Acreage
Home & Family Living
Horticulture
Pests & Wildlife
4-H & Youth
Extension Calendar
and other extension news and events
Special pullout section: Lancaster County Super Fair 2014 Schedule & Map
Effects Of Culture Media And Plant Growth Regulators On Micropropagation Of Willow (Salix Matsudana ‘Golden Spiral’) And Hazelnut (Corylus Colurna ‘Te Terra Red), Dongxue Shi
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
The branches and leaves of Salix matsudana ‘Golden Spiral’ , willow, grow in a twisted manner, which makes it an important bonsai plant. Its mature stems have potential for the woody cut floral industry. Corylus colurna ‘ Te Terra Red’, hazelnut, distinguished by red or purple leaves in the spring, has potential ornamental value in the horticulture industry for landscape use. Micropropagation of these two plants could provide more and healthier plantlets for rapid commercial scale-up by the nursery industry. Nas and Read Medium (NRM) is a newer medium developed specifically for hazelnut species by Nas and Read based on …
An Evaluation Of Watermelon (Citrullus Spp.) Germplasm For Additional Sources Of Resistance To The Twospotted Spider Mite (Tetranychus Urticae Koch)., Hector Cantu Jr.
An Evaluation Of Watermelon (Citrullus Spp.) Germplasm For Additional Sources Of Resistance To The Twospotted Spider Mite (Tetranychus Urticae Koch)., Hector Cantu Jr.
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Fourteen U.S plant introduction (PI) accessions of C. lanatus var. lanatus (4), C. lanatus var. citroides (5) C. colocynthis (5) and a known susceptible commercial cultivar ‘Sugar Baby’ were evaluated for resistance to the twospotted spider mite, Tetranychus urticae Koch, in a limited free-choice and free-choice bioassay under laboratory conditions. The limited free choice bioassay, involved nine Petri dish cages that held five randomly assigned leaves individually inoculated with two adult females and one adult male. Eggs, larva, and adults were counted over a nine day period. The free choice bioassay involved the even distribution of three mite infested …
Fall Seed Guide 2014, Teshome Regassa, P. Stephen Baenziger, Greg Kruger, Dipak Santra
Fall Seed Guide 2014, Teshome Regassa, P. Stephen Baenziger, Greg Kruger, Dipak Santra
Department of Agronomy and Horticulture: Faculty Publications
Crops include in this guide are winter wheat, winter barley, and triticale. You may receive this guide in the mail or through the University of Nebraska Extension network. The data and other information this guide is based on can be found at our web site: http://cropwatch.unl.edu/ varietytest/ and http://digitalcommons.unl.edu/ncia. Additional information is available at the wheat variety virtual tour web site http://cropwatch.unl.edu/wheat/virtual or the winter wheat variety selection tool page http://citnews.unl.edu/winter_wheat_tool/index.shtml.
Our rainfed plots in Keith County were lost to hail damage. Last season we had moist soil conditions at planting for the majority of the locations. There was good …
Registration Of ‘Ci0947bmr’ Sorghum, O. R. Portillo, R. Clara-Valencia, J. Ramírez, R. Estebez, M. Hernández, A. Morán, R. Obando, N. Gutiérrez, R. Tinoco-Mora, N. De Gracia, D. Herrera, Luis Orlindo Tedeschi, W. L. Rooney
Registration Of ‘Ci0947bmr’ Sorghum, O. R. Portillo, R. Clara-Valencia, J. Ramírez, R. Estebez, M. Hernández, A. Morán, R. Obando, N. Gutiérrez, R. Tinoco-Mora, N. De Gracia, D. Herrera, Luis Orlindo Tedeschi, W. L. Rooney
INTSORMIL Scientific Publications
The sorghum [Sorghum bicolor (L.) Moench] cultivar CI0947bmr (Reg. No. CV-137, PI 672153) was jointly developed and released by the Centro Nacional de Tecnología Agropecuaria y Forestal (CENTA) research program in El Salvador and the Texas A&M Agrilife Research sorghum breeding program in 2013. CI0947bmr is a brown midrib (bmr), dual-purpose sorghum selected for productivity in Central American environments. CI0947bmr was developed from a pedigree breeding program, and it was derived from a BC1F2 population of the pedigree B03292bmr/Tortillero//Tortillero. All generation advancement and selection were completed in San Andres, El Salvador. To confirm performance …
Nebline, July 2014
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Feature: 4-H Table Setting Contest is a Fun Way to Learn Nutrition, Setting a Table, Presenting and More!
Food & Health
Family Living
Farm & Acreage
Home & Family Living
Horticulture
Pests & Wildlife
4-H & Youth
Extension Calendar
and other extension news and events
Nebline, June 2014
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Feature: Nurturing Unmarried Parents and Their Children
Food & Health
Family Living
Farm & Acreage
Home & Family Living
Horticulture
Pests & Wildlife
4-H & Youth
Extension Calendar
and other extension news and events
Synthesis Of The Effect Of Fire On Lesser Prairie‐Chickens, Eric Thacker, Dirac L. Twidwell Jr
Synthesis Of The Effect Of Fire On Lesser Prairie‐Chickens, Eric Thacker, Dirac L. Twidwell Jr
Department of Agronomy and Horticulture: Faculty Publications
In this synthesis, we reviewed the scientific literature pertaining to the effects of fire on lesser prairie‐chickens and their habitat. Overall, research is generally lacking that directly assesses relationships among fire, both as a regime and a discrete event, to its effect on lesser prairie‐chicken behavior and habitat value. Yet, research has quantified the effects of fire on vegetation throughout the distribution of the lesser prairie‐chicken, which has been linked to known metrics of habitat value and broad landscape‐level habitat requirements.
To summarize the literature, lesser prairie‐chickens require broad landscapes of fire‐dependent grass‐shrub vegetation. Changes in the eco‐evolutionary fire regime …
Nebline, May 2014
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Feature: The Cost of Invasive Species
Food & Health
Family Living
Farm & Acreage
Home & Family Living
Horticulture
Pests & Wildlife
4-H & Youth
Extension Calendar
and other extension news and events
Stacking Of A Stearoyl-Acp Thioesterase With A Dual-Silenced Palmitoyl-Acp Thioesterase And Δ12 Fatty Acid Desaturase In Transgenic Soybean, Hyunwoo Park, George L. Graef, Yixiang Xu, Patrick Tenopir, Thomas E. Clemente
Stacking Of A Stearoyl-Acp Thioesterase With A Dual-Silenced Palmitoyl-Acp Thioesterase And Δ12 Fatty Acid Desaturase In Transgenic Soybean, Hyunwoo Park, George L. Graef, Yixiang Xu, Patrick Tenopir, Thomas E. Clemente
Department of Agronomy and Horticulture: Faculty Publications
Soybean (Glycine max (L.) Merr) is valued for both its protein and oil, whose seed is composed of 40% and 20% of each component, respectively. Given its high percentage of polyunsaturated fatty acids, linoleic acid and linolenic acid, soybean oil oxidative stability is relatively poor. Historically food processors have employed a partial hydrogenation process to soybean oil as a means to improve both the oxidative stability and functionality in end-use applications. However, the hydrogenation process leads to the formation of trans-fats, which are associated with negative cardiovascular health. As a means to circumvent the need for the hydrogenation process, genetic …
Drivers Of Spatial And Temporal Variation In Soybean Yield And Irrigation Requirements In The Western Us Corn Belt, Patricio Grassini, Jessica A. Torrion, Kenneth Cassman, Haishun Yang, James Specht
Drivers Of Spatial And Temporal Variation In Soybean Yield And Irrigation Requirements In The Western Us Corn Belt, Patricio Grassini, Jessica A. Torrion, Kenneth Cassman, Haishun Yang, James Specht
Department of Agronomy and Horticulture: Faculty Publications
Both rainfed and irrigated soybean production are important in Nebraska (western US Corn Belt), accounting for a respective 48 and 52% of the state’s soybean production of 7 Mt on a respective 55 and 45% share of the state soybean area of 1.9 Mha. To date, no assessment of factors that may account for regional and inter-annual variation in yield and irrigation amount has been performed. To accomplish that objective, we evaluated a database containing on-farm field yields and total irrigation amount used in those fields. These data have been collected annually from ca. 1000 soybean fields in six regions …
Nebline, April 2014
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Feature: Backyard Farmer -- Six Decades of Growing Gardeners and Protecting the Environment
Food & Health
Family Living
Farm & Acreage
Home & Family Living
Horticulture
Pests & Wildlife
4-H & Youth
Extension Calendar
and other extension news and events
Special Pullout Section: Weed Awareness
Nebline, March 2014
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Feature: Make a Difference -- Reduce, Reuse, Recycle
Food & Health
Family Living
Farm & Acreage
Home & Family Living
Horticulture
Pests & Wildlife
4-H & Youth
Extension Calendar
and other extension news and events
Nebline, February 2014
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Feature: 4-H Garbology Uses Science to Teach Environmental Responsibility
Food & Health
Family Living
Farm & Acreage
Home & Family Living
Horticulture
Pests & Wildlife
4-H & Youth
Extension Calendar
and other extension news and events
First Report Of Curvularia Inaequalis And Bipolaris Spicifera Causing Leaf Blight Of Buffalograss In Nebraska, B. S. Amaradasa, K. Amundsen
First Report Of Curvularia Inaequalis And Bipolaris Spicifera Causing Leaf Blight Of Buffalograss In Nebraska, B. S. Amaradasa, K. Amundsen
Department of Agronomy and Horticulture: Faculty Publications
During the summer of 2011, foliar blight was observed on buffalograss (Buchloë dactyloides (Nutt.) Engelm.) lawns in Lincoln and Waverly, Nebraska. Disease symptoms were common when buffalograss was growing above 30°C and in drought conditions. Disease symptoms began as dark brown oblong leaf spots, followed by leaf tip dieback and eventual blighting of entire tillers. Leaf infections would progress into patches of thinning turf. Diseased leaf pieces were rinsed in distilled water and placed on 1.5% water agar. Two mitosporic fungal species having conidial morphology of Curvularia and Bipolaris were isolated. Colonies of Curvularia isolates grown on ¼× PDA …
Caracterización Morfoagronómica De 15 Accesiones De Sorgo (Sorghum Bicolor L Moench) Con Bajo Contenido De Lignina, Dora Antonia Villeda Castillo
Caracterización Morfoagronómica De 15 Accesiones De Sorgo (Sorghum Bicolor L Moench) Con Bajo Contenido De Lignina, Dora Antonia Villeda Castillo
INTSORMIL Scientific Publications
La presente investigación se realizó durante los meses de diciembre de 2011 a marzo de 2012, en la Estación Experimental San Andrés 1, del Centro Nacional de Tecnología Agropecuaria y Forestal (CENTA), del Ministerio de Agricultura y Ganadería ubicado en el municipio de Ciudad Arce, departamento de La Libertad, con el objetivo de caracterizar 15 accesiones de sorgo bmr, con bajo porcentaje de lignina; utilizando descriptores morfoagronómicos para definir su identidad, utilizando descriptores sugeridos por el Instituto Internacional de Investigación de Cultivos para las Zonas Tropicales Semiáridas (ICRISAT), ocho de los cuales son cuantitativos y 17 cualitativos. La metodología utilizada …
Genotyping By Sequencing For Genomic Prediction In A Soybean Breeding Population, Diego Jarquin, Kyle Kocak, Luis Posadas, Katie Hyma, Joseph Jedlicka, George L. Graef, Aaron Lorenz
Genotyping By Sequencing For Genomic Prediction In A Soybean Breeding Population, Diego Jarquin, Kyle Kocak, Luis Posadas, Katie Hyma, Joseph Jedlicka, George L. Graef, Aaron Lorenz
Department of Agronomy and Horticulture: Faculty Publications
Background: Advances in genotyping technology, such as genotyping by sequencing (GBS), are making genomic prediction more attractive to reduce breeding cycle times and costs associated with phenotyping. Genomic prediction and selection has been studied in several crop species, but no reports exist in soybean. The objectives of this study were (i) evaluate prospects for genomic selection using GBS in a typical soybean breeding program and (ii) evaluate the effect of GBS marker selection and imputation on genomic prediction accuracy. To achieve these objectives, a set of soybean lines sampled from the University of Nebraska Soybean Breeding Program were genotyped using …
Quantitative Proteomic Analysis Of The Salmonella-Lettuce Interaction, Yuping Zhang, Renu Nandakumar, Shannon L. Bartelt-Hunt, Daniel D. Snow, Laurie Hodges, Xu Li
Quantitative Proteomic Analysis Of The Salmonella-Lettuce Interaction, Yuping Zhang, Renu Nandakumar, Shannon L. Bartelt-Hunt, Daniel D. Snow, Laurie Hodges, Xu Li
Department of Agronomy and Horticulture: Faculty Publications
Human pathogens can internalize food crops through root and surface uptake and persist inside crop plants. The goal of the study was to elucidate the global modulation of bacteria and plant protein expression after Salmonella internalizes lettuce. A quantitative proteomic approach was used to analyse the protein expression of Salmonella enterica serovar Infantis and lettuce cultivar Green Salad Bowl 24 h after infiltrating S. Infantis into lettuce leaves. Among the 50 differentially expressed proteins identified by comparing internalized S. Infantis against S. Infantis grown in Luria Broth, proteins involved in glycolysis were down-regulated, while one protein involved in ascorbate …
Comparison Of Winter Strawberry Production In A Commercial Heated High Tunnel Versus A University Greenhouse, Ellen T. Paparozzi, Ryan Pekarek, George E. Meyer, Stacy A. Adams, M. Elizabeth Conley, David P. Lambe, Paul Read, Erin E. Blankenship
Comparison Of Winter Strawberry Production In A Commercial Heated High Tunnel Versus A University Greenhouse, Ellen T. Paparozzi, Ryan Pekarek, George E. Meyer, Stacy A. Adams, M. Elizabeth Conley, David P. Lambe, Paul Read, Erin E. Blankenship
Department of Agronomy and Horticulture: Faculty Publications
For the past 4 years, the University of Nebraska strawberry team has worked to develop low cost, sustainable methods for farmers and growers to produce strawberries in a double polyethylene greenhouse during the winter. This past year, this growing system was adapted to become a commercial grower’s heated high tunnel for the winter/spring of 2013-14. The idea was to scale up to a farm-size demonstration and compare it to the university greenhouse production system with a goal to expand marketing opportunities for strawberries into the winter season.
Nebline, January 2014
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Feature: 4-H Youth Serve Their Community By Volunteering
Food & Health
Family Living
Farm & Acreage
Home & Family Living
Horticulture
Pests & Wildlife
4-H & Youth
Extension Calendar
Family and Community Education (FCE) Clubs
and other extension news and events
Nebraska’S Groundwater Legacy: Nitrate Contamination Beneath Irrigated Cropland, Mary E. Exner Spaulding, Aaron J. Hirsh, Roy F. Spalding
Nebraska’S Groundwater Legacy: Nitrate Contamination Beneath Irrigated Cropland, Mary E. Exner Spaulding, Aaron J. Hirsh, Roy F. Spalding
Department of Agronomy and Horticulture: Faculty Publications
A 31 year record of ~44,000 nitrate analyses in ~11,500 irrigation wells was utilized to depict the decadal expansion of groundwater nitrate contamination (N>10 mg/L) in the irrigated corn-growing areas of eastern and central Nebraska and analyze long-term nitrate concentration trends in 17 management areas (MAs) subject to N fertilizer and budgeting requirements. The 1.3 M contaminated hectares were characterized by irrigation method, soil drainage, and vadose zone thickness and lithology. The areal extent and growth of contaminated groundwater in two predominately sprinkler-irrigated areas was only ~20% smaller beneath well-drained silt loams with thick clayey-silt unsaturated layers and unsaturated …
Multilocation Corn Stover Harvest Effects On Crop Yields And Nutrient Removal, Douglas L. Karlen, Stuart J. Birrell, Jane M.F. Johnson, Shannon L. Osborne, Thomas E. Schumacher, Gary E. Varvel, Richard B. Ferguson, Jeff M. Novak, James R. Frederick, John M. Baker, John A. Lamb, Paul R. Alder, Greg W. Roth, Emerson D. Nafziger
Multilocation Corn Stover Harvest Effects On Crop Yields And Nutrient Removal, Douglas L. Karlen, Stuart J. Birrell, Jane M.F. Johnson, Shannon L. Osborne, Thomas E. Schumacher, Gary E. Varvel, Richard B. Ferguson, Jeff M. Novak, James R. Frederick, John M. Baker, John A. Lamb, Paul R. Alder, Greg W. Roth, Emerson D. Nafziger
Department of Agronomy and Horticulture: Faculty Publications
Corn (Zea mays L.) stover was identified as an important feedstock for cellulosic bioenergy production because of the extensive area upon which the crop is already grown. This report summarizes 239 site-years of field research examining effects of zero, moderate, and high stover removal rates at 36 sites in seven different states. Grain and stover yields from all sites as well as N, P, and K removal from 28 sites are summarized for nine longitude and six latitude bands, two tillage practices (conventional vs no tillage), two stoverharvest methods (machine vs calculated), and two crop rotations {continuous corn (maize) …