Digital Commons Network^™

Nitrogen Requirements Of Ethiopian Mustard For Biofuel Feedstock In South Dakota, Phillip Alberti, Shannon Osborne, Febina Mathew, Shakaut Ali, Heidi Sieverding, Sandeep Kumar, Thandiwe Nieya

Agronomy, Horticulture and Plant Science Faculty Publications

Ethiopian mustard (Brassica carinata A. Braun) is a non-food oilseed crop that has received attention for its potential as a low-input biofuel feedstock suitable for production in the semiarid regions of the Northern Great Plains (NGP). Because B. carinata is a new crop to the NGP, the best management practices have yet to be developed. The objective of the study was to evaluate the effects of N fertilizer rate on seed yield, seed oil concentration, and oil yield of B. carinata and to determine the economic optimum N fertilizer rates. Field studies were conducted at two locations in South …

Proceedings Of The 46th Annual Meeting Of The Southern Soybean Disease Workers (March 6-7, 2019, Pensacola Beach, Florida), Carl Bradley, Heather M. Kelly, Burt Bluhm, Danise Beadle, Patricia Bollich, Trey Price, Tom Allen

Southern Soybean Disease Workers: Conference Proceedings

Contents

List of SSDW Officers

Agenda for March 6-7, 2019

Abstracts for presented/contributed papers

Evaluating phytotoxicity in response to fungicide by adjuvant combinations. TW Allen and TH Wilkerson

Effect of delayed harvest on the seed quality of commercial soybean cultivars. JC Rupe, JA Rojas, R Holland, SR Segalin, RD Bond, and JA Still

Virome of Macrophomina phaseolina isolates collected from soybean fields in Mississippi. Nina Aboughanem-Sabanadzovic, Tessie Wilkerson, Tom Allen, and Sead Sabanadzovic

Genomic evidence for interspecific hybridization in Cercospora cf. flagellaris strains associated with Cercospora leaf blight of soybean. Alex Zaccaron, Kona Swift, Ahmad Fakhoury, and Burt Bluhm

Identification …

Forage News [2019-03], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Novel Tall Fecue Workshop - March 20
• Round Bale Binding Materials Evaluated
• Impact of Tedding on Alfalfa Silage
• Spring Grazing School April 23-24
• Spring Fencing School: 3 Dates, 3 Locations

Wayne E. Sabbe Arkansas Soil Fertility Studies 2018, 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.

Seasonal Origins Of Soil Water Used By Trees, Scott T. Allen, James W. Kirchner, Sabine Braun, Rolf T. W. Siegwolf, Gregory R. Goldsmith

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Rain recharges soil water storages and either percolates downward into aquifers and streams or is returned to the atmosphere through evapotranspiration. Although it is commonly assumed that summer rainfall recharges plant-available water during the growing season, the seasonal origins of water used by plants have not been systematically explored. We characterize the seasonal origins of waters in soils and trees by comparing their midsummer isotopic signatures (δ2H) to seasonal isotopic cycles in precipitation, using a new seasonal origin index. Across 182 Swiss forest sites, xylem water isotopic signatures show that summer rain was not the predominant water source …

Evaluation Of Soybean [Glycine Max (L.) Merr.] Genotypes For Yield, Water Use Efficiency, And Root Traits, Harrison Gregory Fried, Sruthi Narayanan, Benjamin Fallen

Publications

Drought stress has been identified as the major environmental factor limiting soybean [Glycine max (L.) Merr.] yield worldwide. Current breeding efforts in soybean largely focus on identifying genotypes with high seed yield and drought tolerance. Water use efficiency (WUE) that results in greater yield per unit rainfall is an important parameter in determining crop yields in many production systems, and is often related with crop drought tolerance. Even though roots are major plant organs that perceive and respond to drought stress, their utility in improving soybean yield and WUE under different environmental and management conditions are largely unclear. The …

How Good Is Our Kentucky Haylage? A Summary Of 2017-18 Farm Results, Jimmy C. Henning, Jeff Lehmkuhler, Levi Berg, April Wilhoit, Corinne Belton, Tommy R. Yankey

Kentucky Alfalfa and Stored Forage Conference

The ability to harvest moist forage as hay gives Kentucky producers many advantages, including timely harvest, higher forage quality, and less weathering loss over hay systems. The baleage system allows producers to utilize commonly available forage equipment (mowers, rakes, balers) rather than requiring choppers and silo structures or bags. Making high quality baleage requires timely access to bale wrappers.

Phylogenetic And Biogeographic Controls Of Plant Nighttime Stomatal Conductance, Kailiang Yu, Gregory R. Goldsmith, Yujie Wang, William R. L. Anderegg

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

The widely documented phenomenon of nighttime stomatal conductance (g_sn) could lead to substantial water loss with no carbon gain, and thus it remains unclear whether nighttime stomatal conductance confers a functional advantage. Given that studies of g_sn have focused on controlled environments or small numbers of species in natural environments, a broad phylogenetic and biogeographic context could provide insights into potential adaptive benefits of g_sn.

We measured g_sn on a diverse suite of species (n = 73) across various functional groups and climates‐of‐origin in a common garden to study the phylogenetic and biogeographic/climatic controls …

Genetic Loci Associated With Salt Tolerance In Advanced Breeding Populations Of Tetraploid Alfalfa Using Genome-Wide Association Studies, Xiang-Ping Liu, Charles Hawkins, Michael D. Peel, Long-Xi Yu

Plants, Soils, and Climate Faculty Publications

Many agricultural lands in the western United States consist of soil with high concentrations of salt, which is detrimental to alfalfa (Medicago sativa L.) growth and production, especially in the region where water resource is limited. Developing alfalfa varieties with salt tolerance is imperative for sustainable production under increasing soil salinity. In the present study, we used advanced alfalfa breeding populations and evaluated five traits related to salt tolerance including biomass dry weight (DW) and fresh weight (FW), plant height (PH), leaf relative water content (RWC), and stomatal conductance (SC) under control and salt stress. Stress susceptibility index (SSI) …

Forage News [2019-02], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Anne Bay Wins Second in National Contest
• Looks Like I need that Hay after all
• My Permanent Pastures Aren't
• Converting to Novel Entophyte Tall Fescue
• The Importance of Forage Analysis
• Chewing some Cud on Mud
• Insects in Livestock Feed and Hay

Nebline, February 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

EFNEP celebrates 50 years of nutrition education

Tips to lower your risk for heart disease

Recipe of the Month

Pesticide applicator trainings

Successful Farmer Series runs through Feb. 8

Nut Orchard Seminar, Feb. 21

ProHort Lawn & Landscape Update

More than drugs and tobacco: Drugstore and cigarette beetles

Now’s the time to get birdhouses ready for spring

2019 flower All-America Selections

Garden Guide Things to Do This Month

What’s going on in the world of early childhood?

Upcoming early childhood trainings

HEART OF 4-H Volunteer Award: Travis Hodtwalker

Meet 2018–2019 4-H Teen Council

IT’S TIME TO RE-ENROLL IN 4-H!

Seeking …

Evaluation Of Stabilized Fertilizer And Crop Canopy Sensors As Next-Generation Nitrogen Management Technologies In Irrigated Corn, Leonardo Mendes Bastos

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Nitrogen (N) is often the most limiting nutrient to corn. Once applied to the field, N can be lost through different pathways, which contributes to low N use efficiency (NUE) by plants. Increases in NUE and decreases in N losses can be potentially achieved by using management options that allow a better synchrony between N supply and demand, such as stabilized fertilizers, and spatially-variable sensor-derived in-season N application. Three studies were conducted in order to assess the effects of different stabilized fertilizers and crop canopy sensors on irrigated corn yield. The first study evaluated the effect of urease inhibitor on …

Upcoming Events [2019], Christopher D. Teutsch, Christi L. Forsythe, Rehanon Pampell

Forage Symposium at the Kentucky Cattlemen’s Convention

No abstract provided.

Uk Research Spotlight [2019], Christopher D. Teutsch, Christi L. Forsythe, Rehanon Pampell

Forage Symposium at the Kentucky Cattlemen’s Convention

• Simplifying Grain Drill Calibration J.M. Buckman, H. Adams, and C.D. Teutsch
• Performance of Stockers Grazing Diverse Summer Annual Forage Mixtures K.M. Mercier, C.D. Teutsch, S.R. Smith, E.L. Ritchey, K.H. Burdine, and E.S. Vanzant
• Nitrogen Application on Diverse Summer Annual Forage Mixtures K.M. Mercier, C.D. Teutsch, S.R. Smith, E.L. Ritchey, K.H. Burdine, and E.S. Vanzant
• Cultivar X Aphicide Interactions C.D. Teutsch, R.T. Villanueva, Z.J. Vilora, G.L Olson, and S.R. Smith
• Using Summer Annuals to Transform Forage Systems in Western Kentucky H. Adams, J.M. Buckman, and C.D. Teutsch
• Can Targeted Management Reduce Nimblewill in Pastures? K. Lea and S.R. Smith
• Nutritive Value …

2018 Long-Term Summary Of Kentucky Forage Variety Trials, Gene L. Olson, S. Ray Smith, Jimmy C. Henning, Christopher D. Teutsch

Forage Symposium at the Kentucky Cattlemen’s Convention

Forage crops occupy approximately 7 million acres in Kentucky. Forages provide a majority of the nutrition for beef, dairy, horse, goat, sheep, and wildlife in the state. In addition, forage crops play an environmentally friendly role in soil conservation, water quality, and air quality. There are over 60 forage species adapted to the climate and soil conditions of Kentucky. Only 10 to 12 of these species occupy the majority of the acreage, but within these species there is a tremendous variation in varieties.

This publication was developed to provide a user-friendly guide to choosing the best variety for producers based …

Forages At Kca Foreword [2019], Christopher D. Teutsch, Christi L. Forsythe, Rehanon Pampell

Forage Symposium at the Kentucky Cattlemen’s Convention

No abstract provided.

Volume 4, Chapter 8-9: Tropics: Submontane And Montane, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

Bulletin 44: New Directions In The American Landscape, Larry Weaner, Chad Adams, Kofi Boone, Rick Darke, Thomas Woltz, Thomas Baker, Jeffrey Longhenry

Bulletins

No abstract provided.

Ultrastructural Analysis Of The Digestive Gland Secretory And Absorptive Processes In Nepenthes Glandulifera, Shannon Manuel

Biochemistry, Cellular and Molecular Biology Honors Papers

Nepenthes glandulifera is a carnivorous pitcher plant native to tropical environments, of which the majority live on the islands in the Malay Archipelago where sunlight and water are abundant. The pitcher trap style contains a modified pitfall trap that attracts insects and other small invertebrates through various attractive mechanisms. These plants also contain digestive glands that secrete digestive fluid to break down prey into nutrients for the plant. The digestive fluid, with remarkably unique properties, has been analyzed in relation to multiple areas of study including the development of an enzyme-supplementation strategy for the treatment of celiac disease and the …

Portable X-Ray Fluorescence Spectroscopy For Rapid And Cost-Effective Determination Of Elemental Composition Of Ground Forage, Yadav Sapkota, Louis M. Mcdonald, Thomas C. Griggs, Thomas J. Basden, Brandon Lee Drake

Faculty & Staff Scholarship

The recent development of portable X-ray fluorescence spectrometers (PXRF) has created new avenues for rapid plant elemental concentration determination at reduced cost while avoiding hazardous chemicals. A few studies have indicated the potential use of PXRF for homogenous plant tissue analysis. However, there is a lack of information for analysis of heterogeneous plant samples like livestock forage, which consists of a mixture of several species and plant parts, each varying in elemental concentration. Our objective was to evaluate PXRF for forage analysis, specifically the effect of forage particle size and scan time on important elements including P, K, Ca, and …

Pollinator-Mediated Yield Across A Heterogeneous Landscape In Eastern South Dakota, Shane Stiles

Oak Lake Field Station 30th Anniversary Retreat Presentations

No abstract provided.

Forage News [2019-01], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Get NAFA's 2019 Alfalfa Variety Ratings
• Evaluation of the Efficacy of Various Herbicides for the Control of Broadleaf and Buckhorn Plantain in Alfalfa
• Save Hay by Reducing Feeding Waste
• Don't Miss "The Dollars and Sense of Grazing", Forages at KCA, January 18th in Owensboro
• Taking Stock
• Winter Meeting Rundown

Global Temporal Patterns In Plant Nutrient Resorption Plasticity, Rebecca E. Drenovsky, Nicole Pietrasiak, Thomas Short

2019 Faculty Bibliography

Aim Leaf nutrient resorption is a key nutrient conservation trait, which also influences nutrient cycling rates and pools. Most global biogeochemical models assume that resorption is non‐varying at a temporal scale. However, this trait can differ substantially within populations among years. We assessed the commonality of attaining proficient resorption, the factors associated with proficient resorption, as well as the variability of this trait and the factors controlling trait variability.

Agroforestry Strategic Framework, Fiscal Years 2019-2024, Susan Stein

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

America’s farmers, ranchers, and forest landowners are integrating trees with agriculture to address a variety of conservation and production goals. A unique land management approach, agroforestry provides opportunities to integrate productivity and profitability with environmental stewardship to support healthy, sustainable agriculture systems, economies, and communities.

Functional Traits Explain Variation In Chaparral Shrub Sensitivity To Altered Water And Nutrient Availability, Reina L. Nielsen, Jeremy J. James, Rebecca E. Drenovsky

2019 Faculty Bibliography

Worldwide drylands are threatened by changes in resource availability associated with global environmental change. Functional traits may help predict which species will be most responsive to these alterations in nutrient and water availability. Current functional trait work focuses on tissue construction and nutrient concentrations, but plant performance in low resource environments also may be strongly influenced by traits related to nutrient budgets and allocation. Our overall objective was to compare trait responses in a suite of serpentine and nonserpentine congener pairs from the California chaparral, a biodiverse region facing nutrient deposition and future changes in precipitation. In a common garden …

Functional Traits Explain Variation In Chaparral Shrub Sensitivity To Altered Water And Nutrient Availability, Reina Lee Nielsen, Jeremy James, Rebecca E. Drenovsky

2019 Faculty Bibliography

Worldwide drylands are threatened by changes in resource availability associated with global environmental change. Functional traits may help predict which species will be most responsive to these alterations in nutrient and water availability. Current functional trait work focuses on tissue construction and nutrient concentrations, but plant performance in low resource environments also may be strongly influenced by traits related to nutrient budgets and allocation. Our overall objective was to compare trait responses in a suite of serpentine and nonserpentine congener pairs from the California chaparral, a biodiverse region facing nutrient deposition and future changes in precipitation. In a common garden …

Fad2 Gene Radiation And Positive Selection Contributed To Polyacetylene Metabolism Evolution In Campanulids1[Open], Tao Feng, Ya Yang, Lucas Busta, Edgar B. Cahoon, Hengchang Wang, Shiyou Lü

Center for Plant Science Innovation: Faculty Publications

Polyacetylenes (PAs) are bioactive, specialized plant defense compounds produced by some species in the eudicot clade campanulids. Early steps of PA biosynthesis are catalyzed by Fatty Acid Desaturase 2 (FAD2). Canonical FAD2s catalyze desaturation, but divergent forms can catalyze hydroxylation, conjugation, acetylenation, and epoxygenation. These alternate reactions give rise to valuable unusual fatty acids, including the precursors to PAs. The extreme functional diversity of FAD2 enzymes and the origin of PA biosynthesis are poorly understood from an evolutionary perspective. We focus here on the evolution of the FAD2 gene family. We uncovered a core eudicot-wide gene duplication event giving rise …

Nebraska Grazing Conference Proceedings, 2019, Center For Grassland Studies, University Of Nebraska-Lincoln

Nebraska Grazing Conference Proceedings

Rangeland Health Session

Managing Sand Deposits after the Flood by Daren Redfearn

Rangeland Health: What Is It and Why Do I Care?” by Patrick Shaver

Managing a Sandhills Ranch with an Eye to Soil Health by Dana Larsen

Grazinglands Management Session

Soil Health: Expectations and Evidence by Virginia Jin

Mob Grazing on Nebraska Sandhills Meadow by Walt Schacht

Effect of Length of Grazing Period on Upland Sandhills Range by Jerry Volesky

Carbon Input and Loss in Semi-arid Sandy Rangeland by Martha Mamo

Graze 365 by Jacob Miller

Soil Health and Grazing Strategies: Opportunities for Increasing Soil Water by Andrea Basche …

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Instructions For Authors, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.