Agriculture Commons^™

U.S. Drought Monitor, December 22, 2015, Richard R. Heim Jr.

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for December 22, 2015 (12/22/15) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.

Rnai-Mediated Control Of Aflatoxins In Peanut: Method To Analyze Mycotoxin Production And Transgene Expression In The Peanut/Aspergillus Pathosystem, Renee S. Arias, Phat M. Dang, Victor S. Sobolev

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The Food and Agriculture Organization of the United Nations estimates that 25% of the food crops in the world are contaminated with aflatoxins. That represents 100 million tons of food being destroyed or diverted to non-human consumption each year. Aflatoxins are powerful carcinogens normally accumulated by the fungi Aspergillus flavus and A. parasiticus in cereals, nuts, root crops and other agricultural products. Silencing of five aflatoxin-synthesis genes by RNA interference (RNAi) in peanut plants was used to control aflatoxin accumulation following inoculation with A. flavus. Previously, no method existed to analyze the effectiveness of RNAi in individual peanut transgenic events, …

Extension Agriculture And Natural Resources In The U.S. Midwest: A Review And Analysis Of Challenges And Future Opportunities, Mahdi M. Al-Kaisi, Roger Wesley Elmore, Gerald A. Miller, David Kwaw-Mensah

Department of Agronomy and Horticulture: Faculty Publications

This review addresses key changes in U.S. agricultural extension and future opportunities. Agricultural extension has been a part of the land-grant university (LGU) system for more than 100 years. The Morrill Act of 1862 established the LGU system by authorizing states access to federally controlled land and funding for public institutions offering educational opportunities focusing on agriculture and mechanical arts for farmers and the working class. Current surveys in Iowa reveal changing trends in extension: more than 90% of farmers identified private-sector crop advisers as their primary source for recommendations, whereas more than 80% of those advisors identified Iowa State …

Rna-Sequencing Reveals Global Transcriptomic Changes In Nicotiana Tabacum Responding To Topping And Treatment Of Axillary-Shoot Control Chemicals, Sanjay Kumar Singh, Yongmei Wu, Jayadri S. Ghosh, Sitakanta Pattanaik, Colin Fisher, Ying Wang, Darlene Lawson, Ling Yuan

Kentucky Tobacco Research and Development Center Faculty Publications

Removal of terminal buds (topping) and control of the formation of axillary shoots (suckers) are common agronomic practices that significantly impact the yield and quality of various crop plants. Application of chemicals (suckercides) to plants following topping is an effective method for sucker control. However, our current knowledge of the influence of topping, and subsequent suckercide applications, to gene expression is limited. We analyzed the differential gene expression using RNA-sequencing in tobacco (Nicotiana tabacum) that are topped, or treated after topping by two different suckercides, the contact-localized-systemic, Flupro^® (FP), and contact, Off-Shoot-T^®. Among the differentially …

Affordable Care Act 2016 Changes, Marilyn Schlake

Cornhusker Economics

Since enacted in 2010, the Affordable Care Act (ACA) has in some capacity affected nearly all individuals and businesses throughout the United States. With its sweeping legislation, insurance companies, health providers, employers and individuals alike have changed how they operate within the health industry. These changes will continue as more ACA regulations go into effect in 2016 and 2017. Understanding how these changes affect you and your family and business is important to successfully navigate through the evolving ACA regulations.

U.S. Drought Monitor, December 15, 2015, Richard Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for December 15, 2015 (12/15/15) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.

Soybean Yield And Nodulation Response To Crop History And Inoculation, Stephen Mason, Tomie Galusha, Zaher Kmail

Department of Agronomy and Horticulture: Faculty Publications

Soybean [Glycine max (L.) Merr.] inoculation was imposed on a long-term continuous grain sorghum [Sorghum bicolor (L.) Moench] and soybean cropping systems study with and without manure application at Mead, NE. The objective was to determine the influence of 28-yr history of continuous grain sorghum and soybean production, inoculation, and manure on soybean yield and nodulation. Average 2-yr soybean grain yield was 0.5 Mg ha^–1 greater on plots with continuous grain sorghum crop history rather than soybean history, even after this history was broken by 2-yr crop rotation with grain sorghum in the 2 yr previous to …

Soil Moisture Affects Growing-Season Wildfire Size In The Southern Great Plains, Erik S. Krueger, Tyson E. Ochsner, David M. Engle, J. D. Carlson, Dirac L. Twidwell, Samuel D. Fuhlendorf

Department of Agronomy and Horticulture: Faculty Publications

The increasing availability of soil moisture data presents an opportunity for its use in wildfire danger assessments, but research regarding the influence of soil moisture on wildfires is scarce. Our objective was to identify relationships between soil moisture and wildfire size for Oklahoma wildfires during the growing (May-October) and dormant seasons (November-April). We hypothesized that soil moisture influences wildfire size when vegetation is growing but is less important when most vegetation is dead or dormant. Soil moisture, as fraction of available water capacity (FAW), and commonly measured weather variables were determined for 38,419 wildfires from 2000–2012. Wildfires were grouped by …

Mobile Broadband In Nebraska, Charlotte Narjes, Becky Vogt, Cullen Robbins

Cornhusker Economics

Mobile Broadband Coverage in Nebraska

• Is mobile broadband coverage available throughout Nebraska?
• Is there a difference between rural and urban areas with respect to mobile wireless speed?
• Should mobile wireless coverage be classified as broadband?

These are some of the questions that were answered by an August 2015 Nebraska Public Service Commission (PSC) report. The study, which began in October 2013, was part of the Nebraska Broadband Initiative efforts to facilitate the integration of broadband and information technology into state and local economics.

Oregon Wine Board Meeting Minutes December 8, 2015, Oregon Wine Board

Oregon Wine Board Documents

These meeting minutes list individuals in attendance at the December 8, 2015 Oregon Wine Board (OWB) meeting, held at the Hotel Vintage in Portland, Oregon. The Board went into Executive Session prior to calling the meeting to order. The finance, education, and marketing committees provided reports. The Board discussed funding grant proposals from the 11^th International Terroir Congress and the Oregon Wine History Archive. The Board also discussed nominations for industry awards and elected a new slate of Directors to chair OWB's Executive Committee in 2016. The meeting lasted 4 hours 13 minutes (including the time spent in Executive …

Guide To The Mark Kronquist Collection, Linfield College Archives

Linfield Archives Finding Aids

This collection includes wine bottles, wine glasses, wine corks, and other memorabilia from the 1980s, as well as numerous books pertaining to the wine industry.

Community Scholars Program - Hopkins County, Kentucky (Fa 736), Manuscripts & Folklife Archives

FA Finding Aids

Finding aid only for Folklife Archives Project 736. This collection contains information and documentation about the Community Scholars Program’s workshops held in Hopkins County, Kentucky during the summer of 2008. The collection chiefly consists of projects completed by program participants.

Managing Net Income Risk With Crop Insurance, Farm Bill, And Hedging, Cory Walters

Cornhusker Economics

Managing uncertain yields and prices before planting is a primary concern to producers, especially when financial ruin is at stake. To manage uncertainty, producers are presented with a complex set of financial tools from both public sources (crop insurance and Farm Bill) and private sources (commodity futures markets). Over time these tools and their relation have evolved. Prior to the mid-1990s, before crop insurance expanded, producers relied primarily on privately operated commodity futures markets and publicly funded government programs, such as the disaster assistance program and the loan deficiency program, to reduce income uncertainty. Since this time the U.S. government …

2015–2016 Kentucky Agricultural Economic Situation And Outlook, Kenneth H. Burdine, Todd Davis, Timothy A. Woods, William M. Snell, Lee Meyer, Jeffrey W. Stringer

Agricultural Situation and Outlook

No abstract provided.

Raspberry Crown Borer [Pennisetia Marginata], Diane Alston

All Current Publications

This fact sheet described raspberry crown borer, a pest that attacks raspberry plants in northern Utah, causing cane-wilt and death. It includes life history, host injury, monitoring and thresholds, and management techniques.

Field Abundance And Performance Of Hoverflies (Diptera: Syrphidae) On Soybean Aphid, James O. Eckberg, Julie A. Peterson, Colin P. Borsh, Joe M. Kaser, Gregg A. Johnson, John C. Luhman, Donald L. Wyse, George E. Heimpel

West Central Research and Extension Center, North Platte

The management of the soybean aphid Aphis glycines Matsumara is a major challenge to soybean production in the north-central United States. The identification and characterization of the insect predator community has informed integrated pest management strategies by providing insight on predators that can suppress soybean aphid populations. Hoverflies (Diptera: Syrphidae) are known predators of A. glycines, but more information is needed on their diversity, abundance, and performance to evaluate their importance as biological control agents of A. glycines. In this study, syrphid abundance was evaluated across two growing seasons in four soybean fields in east-central Minnesota. Six methods …

Intrastate And Interstate Travel Requirements For Horses, Karl Hoopes, Barry Pittman, Cody James

All Current Publications

This fact sheet describes the requirements for transporting horses within Utah and to other states.

Requisitos Para El Viaje De Caballos Dentro Del Estado De Utah Y De Un Estado A Otro, Karl Hoopes, Barry Pittman, Cody James

All Current Publications

No abstract provided.

Distribution Of Herbicide-Resistant Shattercane And Johnsongrass Populations In Sorghum Production Areas Of Nebraska And Northern Kansas, Rodrigo Werle, Amit J. Jhala, Melinda K. Yerka, J. Anita Dille, John L. Lindquist

Department of Agronomy and Horticulture: Faculty Publications

Overreliance on acetolactate synthase (ALS)-inhibiting herbicides for weed control during the 1990s resulted in selection of ALS-resistant shattercane [Sorghum bicolor (L.) Moench ssp. drummondii (Nees ex Steud.) de Wet ex Davidse] biotypes in Nebraska. The objective of this study was to assess the baseline presence of ALS-resistance in 190 shattercane and 59 johnsongrass [Sorghum halepense (L.) Pers.] populations collected across northern Kansas, northwestern Missouri, and southern Nebraska in 2013. In 2014, a preliminary field experiment was conducted to evaluate the presence of herbicide resistance in the aforementioned populations. Treatments consisted of four herbicides (clethodim {2-[1-[[(E)-3-chloroprop-2-enoxy]amino] propylidene]-5-(2-ethylsulfanylpropyl)cyclohexane-1,3-dione}, glyphosate [N-(phosphonomethyl) …

Neural Correlates Of Decision-Making Under Ambiguity And Conflict, Helen Pushkarskaya, Michael Smithson, Jane E. Joseph, Christine R. Corbly, Ifat Levy

Agricultural Economics Faculty Publications

HIGHLIGHTS

• We use a simple gambles design in an fMRI study to compare two conditions: ambiguity and conflict.

• Participants were more conflict averse than ambiguity averse.

• Ambiguity aversion did not correlate with conflict aversion.

• Activation in the medial prefrontal cortex correlated with ambiguity level and ambiguity aversion.

• Activation in the ventral striatum correlated with conflict level and conflict aversion.

Studies of decision making under uncertainty generally focus on imprecise information about outcome probabilities (“ambiguity”). It is not clear, however, whether conflicting information about outcome probabilities affects decision making in the same manner as ambiguity does. …

Canola: A Modern Crop For A Modern Era, Kenneth J. Roché

Doctor of Plant Health Program: Dissertations and Student Research

The University of Nebraska-Lincoln Doctor of Plant Health program is a professional doctorate program with a comprehensive approach to plants and agriculture. The program emphasizes a broad interdisciplinary education across all plant-related disciplines, practical learning, research, and experience through internships. For my final required internship, I worked as a senior agricultural research intern with Research Designed for Agriculture (RD4AG) in Montana. RD4AG is a contract research organization based in Yuma, AZ with over thirty-years of experience. During my three month internship at RD4AG in Montana, a large portion of my responsibilities centered on managing regulated canola trials that were undertaken …

U.S. Drought Monitor, November 24, 2015, Richard R. Heim Jr.

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for November 24, 2015 (11/24/15) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.

Farmland Use Decisions In The Dakota's: Key Results From The 2015 Producer Survey, Larry Janssen, Moses Luri, Md. Chowdhury, Hongli Feng, David Hennessy

Economics Commentator

This newsletter is written to summarize the major findings from the 2015 survey on farmland use decisions in the Dakotas which was completed by 1,026 producers located across 57 counties in South Dakota and North Dakota. We wish to thank each person that completed this survey in March or April of 2015. We are sending this newsletter to their household as our “thank you” for participating. The key findings should be of general interest to a wider audience and the following content is written for this purpose.

Genetic Control Of Morphometric Diversity In The Maize Shoot Apical Meristem, Samuel Leiboff, Xianran Li, Heng-Cheng Hu, Natalie Todt, Jinliang Yang, Xiao Li, Xiaoqing Yu, Gary J. Muehlbauer, Marja C.P. Timmermans, Jianming Yu, Patrick S. Schnable, Michael J. Scanlon

Department of Agronomy and Horticulture: Faculty Publications

The maize shoot apical meristem (SAM) comprises a small pool of stem cells that generate all above-ground organs. Although mutational studies have identified genetic networks regulating SAM function, little is known about SAM morphological variation in natural populations. Here we report the use of high-throughput image processing to capture rich SAM size variation within a diverse maize inbred panel. We demonstrate correlations between seedling SAM size and agronomically important adult traits such as flowering time, stem size and leaf node number. Combining SAM phenotypes with 1.2 million single nucleotide polymorphisms (SNPs) via genome-wide association study reveals unexpected SAM morphology candidate …

Rental Agreements For Cover Crop Grazing, Jay Parsons, Mary Drewnoski

Cornhusker Economics

Cover crops are becoming increasing popular throughout Nebraska and the surrounding region. As their name implies, cover crops cover the ground helping prevent soil erosion outside of the growing season for the primary crop. Below ground, cover crops also contribute to soil organic matter. Increasingly, people are looking at the above ground biomass produced by cover crops as a potential source of feed for cattle or other ruminant livestock. Technically, this would make them double cropped forages instead of cover crops but that is a topic for another day. For now, let's consider the fact that many of the crop …

U.S. Drought Monitor, November 17, 2015, Richard R. Heim Jr.

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for November 17, 2015 (11/17/15) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.

Guide To The Amity Vineyards Collection, Linfield College Archives

Linfield Archives Finding Aids

This collection is comprised of documents and artifacts covering Amity Vineyards and winery information. This includes vineyard and harvest records, business documentation, representative material from various wine-affiliated organizations, published books, newspapers, magazine articles, and research papers. The collection provides researchers with a wide representation of the Oregon wine industry in addition to documentation and published works regarding wineries and vineyard owners from around the world.

Residue Harvest Effects On Irrigated, No-Till Corn Yield And Nitrogen Response, Charles S. Wortmann, Charles A. Shapiro, Marty R. Schmer

Department of Agronomy and Horticulture: Faculty Publications

Crop residue harvest occurs on about 40% of Nebraska’s 3,700,000 ha of corn (Zea mays L.) land, primarily for feeding of beef cattle. Immobilization of applied N is expected to be less with residue harvest due to reduced microbial activity for digestion of high C/N ratio organic material. Residue reduction may affect subsequent crop yield and response to applied N. Field research was conducted at three locations over 2 yr in eastern Nebraska for irrigated, no-till corn following corn to determine residue harvest effects on yield and the economically optimal nitrogen rate (EONR). Study sites had deep silt loam …

Evidence Of Field-Evolved Resistance To Bifenthrin In Western Corn Rootworm (Diabrotica Virgifera Virgifera Leconte) Populations In Western Nebraska And Kansas, Adriano E. Pereira, Haichuan Wang, Sarah N. Zukoff, Lance Meinke, B. Wade French, Blair Siegfried

Department of Entomology: Faculty Publications

Pyrethroid insecticides have been used to control larvae or adults of the western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte, a key pest of field corn in the United States. In response to reports of reduced efficacy of pyrethroids in WCR management programs in southwestern areas of Nebraska and Kansas the present research was designed to establish a baseline of susceptibility to the pyrethroid insecticide, bifenthrin, using susceptible laboratory populations and to compare this baseline with susceptibility of field populations. Concentration-response bioassays were performed to estimate the baseline susceptibility. From the baseline data, a diagnostic concentration (LC99) was determined and …

Herbicides Applied At Or Shortly After Seeding Are Effective For Weed Control In Seedling Buffalograss, Luqi Li, Matthew D. Sousek, Zachary Reicher

Department of Agronomy and Horticulture: Faculty Publications

Herbicides applied shortly after seeding of buffalograss [Buchloe dactyloides (Nutt.) Engelm.] can help reduce weed pressure and maximize establishment of buffalograss. This study evaluated 12 relatively recently developed herbicides for turf safety and weed control when applied at seeding or 0 or 2 weeks after emergence (WAE) of ‘Bowie’ or ‘Sundancer’ buffalograss. Primary weed species on the site were common purslane (Portulaca oleracea L.), redroot pigweed (Amaranthus retroflexus L.), and/or yellow foxtail [Setaria lutescens (Weigel ex Stuntz) F.T. Hubb.]. Regardless of cultivar, untreated checks had53% weed cover by 6 WAE, whereas most of the herbicide treatments resulted …