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Articles 151 - 180 of 720

Full-Text Articles in Agriculture

In Pursuit Of Understanding Barrel Variation: Surveying The Lignocellulose Composition And Content Changes In Quercus Alba Barrel Staves During Cooperage And Bourbon Whiskey Maturation, Jarrad Wade Gollihue Jan 2020

In Pursuit Of Understanding Barrel Variation: Surveying The Lignocellulose Composition And Content Changes In Quercus Alba Barrel Staves During Cooperage And Bourbon Whiskey Maturation, Jarrad Wade Gollihue

Theses and Dissertations--Plant and Soil Sciences

Bourbon whiskey is a distilled spirit which is a uniquely American with several legal requirements including 1) the major grain in the mash is corn, 2) must be aged in a new charred white oak barrel, and 3) made in the United States of America. Kentucky is the whiskey historical home, producing most of the bourbon in the United States. Interest in whiskey has developed a need to understand more about the underlying chemistry of bourbon. The charred white oak barrel used in bourbon production is of substantial interest because the barrel has been implicated in giving American whiskey its …


2019-2020 Kentucky Agricultural Economic Situation And Outlook, Kenneth H. Burdine, Todd D. Davis, Jerry Pierce, William M. Snell, Timothy A. Woods, Jeffrey W. Stringer, Bobby Ammerman Dec 2019

2019-2020 Kentucky Agricultural Economic Situation And Outlook, Kenneth H. Burdine, Todd D. Davis, Jerry Pierce, William M. Snell, Timothy A. Woods, Jeffrey W. Stringer, Bobby Ammerman

Agricultural Situation and Outlook

No abstract provided.


Forage News [2019-11], Department Of Plant And Soil Sciences, University Of Kentucky Nov 2019

Forage News [2019-10], Department Of Plant And Soil Sciences, University Of Kentucky Oct 2019

Forage News [2019-09], Department Of Plant And Soil Sciences, University Of Kentucky Sep 2019

Forage News [2019-08], Department Of Plant And Soil Sciences, University Of Kentucky Aug 2019

Forage News [2019-07], Department Of Plant And Soil Sciences, University Of Kentucky Jul 2019

Meta-Analysis Of Yield Response Of Foliar Fungicide-Treated Hybrid Corn In The United States And Ontario, Canada, Kiersten A. Wise, Damon Smith, Anna Freije, Daren S. Mueller, Yuba Kandel, Tom Allen, Carl A. Bradley, Emmanuel Byamukama, Martin Chilvers, Travis Faske, Andrew Friskop, Clayton Hollier, Tamra A. Jackson-Ziems, Heather Kelly, Bob Kemerait, Paul Price Iii, Alison Robertson, Albert Tenuta Jun 2019

Meta-Analysis Of Yield Response Of Foliar Fungicide-Treated Hybrid Corn In The United States And Ontario, Canada, Kiersten A. Wise, Damon Smith, Anna Freije, Daren S. Mueller, Yuba Kandel, Tom Allen, Carl A. Bradley, Emmanuel Byamukama, Martin Chilvers, Travis Faske, Andrew Friskop, Clayton Hollier, Tamra A. Jackson-Ziems, Heather Kelly, Bob Kemerait, Paul Price Iii, Alison Robertson, Albert Tenuta

Plant Pathology Faculty Publications

Background

Foliar fungicide applications to corn (Zea mays L.) occur at one or more application timings ranging from early vegetative growth stages to mid-reproductive stages. Previous studies indicated that fungicide applications are profitable under high disease pressure when applied during the tasseling to silking growth stages. Few comprehensive studies in corn have examined the impact of fungicide applications at an early vegetative growth stage (V6) compared to late application timings (VT) for yield response and return on fungicide investment (ROI) across multiple locations.

Objective

Compare yield response of fungicide application timing across multiple fungicide classes and calculate the probability …


Forage News [2019-06], Department Of Plant And Soil Sciences, University Of Kentucky Jun 2019

Determination Of Tobacco Alkaloid Enantiomers Using Reversed Phase Uplc/Ms/Ms, Huihua Ji, Ying Wu, Franklin Fannin, Lowell P. Bush May 2019

Determination Of Tobacco Alkaloid Enantiomers Using Reversed Phase Uplc/Ms/Ms, Huihua Ji, Ying Wu, Franklin Fannin, Lowell P. Bush

Kentucky Tobacco Research and Development Center Faculty Publications

Nʹ-Nitrosonornicotine (NNN), a carcinogenic tobacco-specific Nʹ-nitrosamine (TSNA), is on the FDA list of harmful and potentially harmful constituents (HPHCs). Nornicotine, a product of the demethylation of nicotine, is the immediate alkaloid precursor for NNN formation. Nicotine, nornicotine and NNN are optically active. The accumulation of the isomers of nicotine, nornicotine, and NNN impacts their biological activity. In this paper, we report the determination of tobacco alkaloid enantiomers (including nicotine, nornicotine, anabasine, and anatabine) in samples of different tobacco lines using a reversed phase ultra-performance liquid chromatography-tandem mass spectrometer (UPLC/MS/MS) method. Current method demonstates excellent detection capability for all alkaloid enantiomers, …


Forage News [2019-05], Department Of Plant And Soil Sciences, University Of Kentucky May 2019

Forage News [2019-04], Department Of Plant And Soil Sciences, University Of Kentucky Apr 2019

Nitrogen Fertilizer Suppresses Mineralization Of Soil Organic Matter In Maize Agroecosystems, Navreet K. Mahal, William R. Osterholz, Fernando E. Miguez, Hanna J. Poffenbarger, John E. Sawyer, Daniel C. Olk, Sotirios V. Archontoulis, Michael J. Castellano Mar 2019

Nitrogen Fertilizer Suppresses Mineralization Of Soil Organic Matter In Maize Agroecosystems, Navreet K. Mahal, William R. Osterholz, Fernando E. Miguez, Hanna J. Poffenbarger, John E. Sawyer, Daniel C. Olk, Sotirios V. Archontoulis, Michael J. Castellano

Plant and Soil Sciences Faculty Publications

The possibility that N fertilizer increases soil organic matter (SOM) mineralization and, as a result, reduces SOM stocks has led to a great debate about the long-term sustainability of maize-based agroecosystems as well as the best method to estimate fertilizer N use efficiency (FNUE). Much of this debate is because synthetic N fertilizer can positively or negatively affect SOM mineralization via several direct and indirect pathways. Here, we test a series of hypotheses to determine the direction, magnitude, and mechanism of N fertilizer effect on SOM mineralization and discuss the implications for methods to estimate FNUE. We measured the effect …


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

Survey And Adjourn, Kentucky Alfalfa And Stored Forages Conference Feb 2019

Survey And Adjourn, Kentucky Alfalfa And Stored Forages Conference

Kentucky Alfalfa and Stored Forage Conference

No abstract provided.


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 Feb 2019

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.


Farmer Panel: Baleage – How It Works On My Farm, Todd Clark, Tom Wright, Tom Greathouse Feb 2019

Farmer Panel: Baleage – How It Works On My Farm, Todd Clark, Tom Wright, Tom Greathouse

Kentucky Alfalfa and Stored Forage Conference

No abstract provided.


Evolution Of Mechanization And Transport In My Hay Operation, Ron Tombaugh Feb 2019

Evolution Of Mechanization And Transport In My Hay Operation, Ron Tombaugh

Kentucky Alfalfa and Stored Forage Conference

Good morning! My name is Ron Tombaugh. I was born and raised on a dairy farm near Streator, IL. Streator is about 100 miles southwest of Chicago. Our farm was in the northwest corner of Livingston county, one of the largest counties in IL. To give you an idea of the crops grown there, Livingston County along with 4 surrounding counties produce more corn than the neighboring state of Missouri! Dairy farms were not real common in our area then, and are almost non-existent in the area now.


Barn Considerations For Cash Hay Operations, Morgan D. Hayes Feb 2019

Barn Considerations For Cash Hay Operations, Morgan D. Hayes

Kentucky Alfalfa and Stored Forage Conference

A well designed and built a barn can be invaluable for cash hay operation. Barn provide opportunity to reduce losses in dry matter and help maintain quality throughout the winter. There are numerous styles of barns that hay producers can purchase or build themselves. Wood frame structures, often with metal roofs and metal sides, are fairly common. You can also build barns with a steel structure with or without metal siding on the walls. Hoop barns are another common hay storage structure - particularly common with round bale storage. All, however, provide valuable storage for hay. There are four areas …


Update On Hay Making Equipment And Technology, Joshua J. Jackson Feb 2019

Update On Hay Making Equipment And Technology, Joshua J. Jackson

Kentucky Alfalfa and Stored Forage Conference

Precision agriculture has focused on optimizing efficiency. For crop production, yields can be obtained from the combine and integrated with soil nutrient data to characterize the response to changes in management strategies (spraying, harvesting, nutrient application, irrigation, etc). Currently the highest resolution for yield, for the majority of farms raising alfalfa in Kentucky, is based upon the field level of data. Specifically, most farmers could specify the bales per field. From this and a dry matter (DM) analysis, we can derive the following: bales per acre, tons per acre, total tons of DM, and nutrients removed. Soil characteristics can be …


Hay Prices And Trends, David Knopf Feb 2019

Hay Prices And Trends, David Knopf

Kentucky Alfalfa and Stored Forage Conference

Kentucky’s large cattle and horse populations require considerable forage, and hay is one of the primary feed sources. The state ranks eighth nationally in the production of dry hay. This paper will look at this important sector of Kentucky’s agriculture production, specifically at the available sources of hay prices and recent price trends.


Fixed Costs In Hay Production, Greg S. Halich Feb 2019

Fixed Costs In Hay Production, Greg S. Halich

Kentucky Alfalfa and Stored Forage Conference

When hay producers estimate cost of production they often focus exclusively on “cash costs” or variable cost of production such as fuel, repairs, supplies, fertilizer, labor (if hired), and rent (if leased). They all too often ignore their “fixed costs” of production such as depreciation, interest, labor (if family), insurance, and certain taxes. Although there are legitimate reasons to concentrate on cash costs in the short-run, it is a mistake in the long-run, as these are real costs. Fixed costs for equipment are often ignored because they are generally paid in lump sums, and thus there is a disconnect between …


An Economic Feasibility Assessment Of Autonomous Field Machinery In Grain Crop Production, Jordan Murphy Shockley, Carl R. Dillon, Scott A. Shearer Feb 2019

An Economic Feasibility Assessment Of Autonomous Field Machinery In Grain Crop Production, Jordan Murphy Shockley, Carl R. Dillon, Scott A. Shearer

Agricultural Economics Faculty Publications

A multi-faceted whole farm planning model is developed to compare conventional and autonomous machinery for grain crop production under various benefit, farm size, suitable field day risk aversion, and grain price scenarios. Results suggest that autonomous machinery can be an economically viable alternative to conventional manned machinery if the establishment of intelligent controls is cost effective. An increase in net returns of 24% over operating with conventional machinery is found when including both input savings and a yield increase due to reduced compaction. This study also identifies the break-even investment price for intelligent controls for the safe and reliable commercialization …


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

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

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 Jan 2019

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 …


Grazing Myths That Impact Profitability [Slides], Gregory S. Halich Jan 2019

Grazing Myths That Impact Profitability [Slides], Gregory S. Halich

Forage Symposium at the Kentucky Cattlemen’s Convention

No abstract provided.


Grazing Myths That Reduce Profitability, Gregory S. Halich Jan 2019

Grazing Myths That Reduce Profitability, Gregory S. Halich

Forage Symposium at the Kentucky Cattlemen’s Convention

Many cattle farms have moved to rotational grazing in the past decade, and there are significant benefits associated with this grazing technique. However, one thing that I have noticed is that costs are not always accounted for when it comes to recommended rotational grazing practices. If you ignore costs, partially or fully, you will invariably do too much of whatever you are considering. In this light, I will highlight four grazing recommendations (myths) that many folks are often taking to extremes related to rotational grazing, and one additional myth (generic to grazing style) that is reducing the overall profitability of …


Economics Of Grazing Cover Crops, Edward N. Ballard Jan 2019

Economics Of Grazing Cover Crops, Edward N. Ballard

Forage Symposium at the Kentucky Cattlemen’s Convention

Feed costs represent the major cost in most livestock production systems. A completed analysis of 225 Standardized Performance Analysis (SPA) Beef Cow Records on herds in Illinois and Iowa showed that feed cost was the overriding factor determining profitability, explaining over 57 percent of the herd-to-herd variation.


Estimating Pasture Forage Mass From Pasture Height, Ed Rayburn, John Lozier Jan 2019

Estimating Pasture Forage Mass From Pasture Height, Ed Rayburn, John Lozier

Forage Symposium at the Kentucky Cattlemen’s Convention

How do you decide when to move animals to new pasture? How long can they feed on a pasture before they should be moved again? The short answer is, "It depends." It depends on the number and size of animals, pasture size, production goals, available alternative pastures, and the forage mass present in the pasture. In order to practice pasture budgeting, you need an estimate of forage mass measured as pounds of forage dry matter/acre.