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Series

2019

University of Kentucky

Articles 1 - 16 of 16

Full-Text Articles in Agriculture

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.

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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 …

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

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

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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 …

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

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 …

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

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