Digital Commons Network^™

Sustainable Agriculture Lesson For Middle School Classrooms, Sara Colombe, Madhav P. Nepal, Jennifer Mclaughlin, Matthew L. Miller, Larry B. Browning, P. Troy White

iLEARN Teaching Resources

In this lesson, students will learn about sustainability, where farmers/agriculturists can meet the needs of food, fiber, and fuel for the growing population. Students learn about growing population, its growth rate, major food source, sustainability barrel, potential ripple effects of positive impacts as well as the food waste and its effects.

Improving The Distribution And Use Of Biogas By Conversion To Methanol, Zachary Christman

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

In this technology review, the process of turning an average biogas into methanol will be presented. The purpose is to find a better method of transporting the energy contained within biogas so that it may be used in industry as a value added product. The first step is removal of hydrogen sulfide, a corrosive chemical that can breakdown mechanical parts. The second step is carbon capture and conversion of the biogas into hydrogen. The final step is the hydrogenation of carbon dioxide into methanol using a copper catalyst and an alcohol co-catalyst.

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

A New Direction For Salinity Management In Western Australia: A Consultative Review, Ghd

Natural resources commissioned reports

In May 2018, the Office of the Auditor General (OAG) published an audit into the management of salinity and recommended that the Department of Primary Industries and Regional Development (DPIRD), in consultation with the Department of Biodiversity, Conservation and Attractions (DBCA) and the Department of Water and Environmental Regulation (DWER), set a strategic direction for salinity management for WA and improve monitoring, cooperation, coordination, promotion of soil conservation, and compliance of salinity impacts and its management.

The OAG’s audit focused on two questions:

1. Do agencies know the extent and impact of dryland salinity in the South West agricultural regions?
2. Are …

Measuring And Building Soil Health, Matt Yost, Grant Cardon, Brad Crookston, Jennifer Reeve, Earl Creech

All Current Publications

This fact sheet provide facts about soil health and will help land managers understand what soil health is, how to measure it, and how to potentially build it on their soils.

Livestock Grazing And Sage-Grouse: Science, Policy, And The 7-Inch Rule, David K. Dahlgren, Eric Thacker

All Current Publications

This fact sheet discusses livestock grazing and its impact on sage-grouse.

Comparison Of Fermentation Characteristics Between Clostridium Butyricum And Clostridium Tyroburicum, Wang Youling, Wei Zhujun, Liu Qing, Zhu Lilei, Xiao Haifang, Song Yuanda

Food and Machinery

In this study, three strains of Clostridium butyrate were isolated from human feces, pit mud and animal intestinal contents. Which were named as Clostridium butyricum NK, SY and RX respectively. The fermentation characteristics of C. butyricum NK, SY and RX and C. tyroburicum ATCC25755 grown in synthetic medium were compared. The results showed that the growth ability of C. butyricum NK and SY were strong. C. tyroburicum had higher butyric acid, but lower lactic acid-production than C. butyricum. Compared among the three different strains of C. butyricum, C. butyricum NK had a stronger ability to produce butyric acid, with the …

Flavor Components Of Fermented Coconut Milk Using Omics Technology Combined With Spme-Gc-Ms, Lei Wenping, Zhou Hui, Zhou Xingrong, Wu Kun, Wu Ni, Song Yanfei, Liu Chengguo

Food and Machinery

In order to analyze the correlation between characteristic flavor components and sensory flavor of fermented coconut milk. Solid-phase micro extraction (SPME) combined with gas chromatography-mass spectrometry (GC-MS) was employed to analyze the volatile flavor compounds of fermented coconut, natural coconut milk and yogurt, respectively. The sensory properties of flavor were assessed, and the characteristic flavor of the fermented coconut milk was analyzed from the sensory and flavor substances in combination with the omics technology. The results showed that the sensory flavor characteristics of fermented coconut milk were higher in sweet, sour, coconut, milky, creamy and alcoholic sensory scores; the sweetness …

Isolation And Identification Of Escherichia Coli O26 From A Slaughter House, Fu Wenjing, Dong Chen, Yu Jinlong, Hu Jie, Jiang Yun

Food and Machinery

Escherichia coli O26 was isolated and identified form a slaughter plant in order to investigate its contamination of E. coli O26. According to USDA detection method, samples were enriched with immunomagnetic separation (IMS) after selective enrichment, and then isolated and purified with selective chromogenic mRainbow agar. Subsequently, the suspected colonies were screened and chose to test the O antigen by PCR and followed by the serum agglutination test. The virulence genes (stx1, stx2, eae and hly) of positive isolations were detected by multiplex PCR. The results showed that only one strain from 120 samples was identified as E. coli O26, …

Advances In The Application Of Rfid Technology In Food Traceability Systems, Zhao Xunming, Liu Jianhua

Food and Machinery

RFID technology is simple, flexible and practical. It has been applied to food traceability systems to ensure the quality and safety of food materials. In this paper, the concept of food safety and traceability, and RFID technology are introduced. The research progress in food traceability systems such as dairy products, animal products, aquatic products, fruits and vegetables is summarized. And the advantages of RFID technology and its application difficulties are analyzed. This paper will provide the theoretical guidance to a traceability system for food quality and safety.

Research Progress Fermented Food And Its Functional Properties Of Mung Bean, Wang Li, Ren Si, Zhou Sumei, Yi Cuiping, Tong Litao, Wang Lili, Zhou Xianrong

Food and Machinery

In this paper, the quality characteristics of mung bean and the types of microbial strains used in fermented mung bean products were summarized. And the types of mung bean fermented food and their functional properties were also introduced. Furthermore, the problems and suggestions were listed in the paper, which was helpful to develop and utilize the mung bean.

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

Kentucky Alfalfa and Stored Forage Conference

No abstract provided.

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.

Next-Generation Sequencing Identifies Polyunsaturated Fatty Acid Responsive Genes In The Juvenile Rat Cerebellum, Aaron A. Mehus, Aaron M. Dickey, Timothy P. L. Smith, Kathleen M. Yeater, Matthew Picklo

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

Dietary n-3 polyunsaturated fatty acids (PUFA) influence postnatal brain growth and development. However, little data exist regarding the impacts of dietary n-3 PUFA in juvenile animals post weaning, which is a time of rapid growth. We tested the hypothesis that depleting dietary n-3 PUFA would result in modifications to the cerebellar transcriptome of juvenile rats. To test this hypothesis, three week old male rats (an age that roughly corresponds to an 11 month old child in brain development) were fed diets containing either soybean oil (SO) providing 1.1% energy from α-linolenic acid (ALA; 18:3n-3; ALA-sufficient) or corn oil (CO) providing …

Climate Change, Woodpeckers, And Forests: Current Trends And Future Modeling Needs, Eric S. Walsh, Kerri T. Vierling, Eva Strand, Kristina Bartowitz, Tara W. Hudiburg

Aspen Bibliography

The structure and composition of forest ecosystems are expected to shift with climate‐induced changes in precipitation, temperature, fire, carbon mitigation strategies, and biological disturbance. These factors are likely to have biodiversity implications. However, climate‐driven forest ecosystem models used to predict changes to forest structure and composition are not coupled to models used to predict changes to biodiversity. We proposed integrating woodpecker response (biodiversity indicator) with forest ecosystem models. Woodpeckers are a good indicator species of forest ecosystem dynamics, because they are ecologically constrained by landscape‐scale forest components, such as composition, structure, disturbance regimes, and management activities. In addition, they are …

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 …

Effectiveness Of Windrow Composting Methodology In Killing A Thermo-Tolerant Species Of Salmonella During Mortality Composting, Spencer Gabriel Myers

Master's Theses

In a large agricultural operation, such as the one at Cal Poly San Luis Obispo, disposal of deceased animals is an immense issue. The cost of transporting and rendering every dead animal is inhibitory to the general function of the agricultural operations and their thin budget. Therefore, we propose that composting mortalities could be an economical alternative. Composting is a recognized method for taking animal waste products along with carbon waste and turning it into a pathogen-free, nutrient-rich topsoil. Carcass composting is in fact performed in other countries and states to varying degrees of success. However, the California EPA limits …

Understanding The Basics Of Rabbit Care, Nicloe Reed, Amanda Christensen

All Current Publications

This fact sheet is designed to give anyone interested in owning and raising rabbits an overview of the basics of rabbit care and the resources needed to get started.

Medication Darts Are Gaining In Popularity - Do They Affect Meat Quality? Are There Risks?, David J. Wilson, Kerry A. Rood

All Current Publications

Livestock, such as beef cattle or post-weaned dairy cattle that are not yet milking, are often relatively “tame” (sometimes the term tame may not apply very well) and can be readily approached within a few feet. However, without adequate restraint facilities or enough personnel, actually treating the livestock is often difficult and can become frustrating and dangerous to people and animals. A solution to this problem, which is being rapidly and increasingly adopted, is the use of medication darts. Nevertheless, many in the cattle industry are raising some concerns. What are some of the characteristics of medication darts? Is there …

Predatory Hymenopteran Assemblages In Boreal Alaska: Associations With Forest Composition And Post-Fire Succession, Alexandria Wenninger, Teresa Hollingsworth, Diane Wagner

Aspen Bibliography

Changes to the fire regime in boreal Alaska are shifting the ratio of coniferous to deciduous dominance on the landscape. The increase in aspen and birch may have important effects on predatory hymenopteran assemblages by providing a source of extrafloral nectar and increasing prey availability. Furthermore, fire-induced changes in successional age alter habitat structure and microclimate in ways that may favor ants. This study is the first to characterize the influence of fire-related vegetation changes on boreal predatory hymenopteran assemblages. We compare the abundance, species richness, and composition of predatory hymenopteran assemblages among forests at different stages of succession and …

Study On Preheating And Ultrasound-Assisted Extraction Of Polyphenols From Corn Silk And Their Antioxidant Activities, Xu Yingyi, Xu Yanxia, Wang Yu, Lin Wei, Wu Hongyan, Meng Xiangwen

Food and Machinery

Ultrasonic-assisted ethanol extraction after heating was used to extract polyphenols from corn silk. On the basis of single factor test, the response surface optimization test was carried out on polyphenols by ultrasonic-assisted ethanol extractions, and the antioxidant activity of the extracted polyphenols was studied. The results showed that the optimum extraction conditions were as follows: the ratio of solid to liquid 1∶22 (g/mL), the volume fraction of ethanol 60%, the ultrasonic time 32 min, and the ultrasonic temperature 60 ℃，the extraction rate of the polyphenol from corn silk was (6.49 ± 0.23)%. The scavenging rates of DPPH，hydroxyl and ABTS free …

Reliable Screening Of Rutin In Healthcare Products By Hptlc-Dpph Assay, Wang Tiannan, Zhang Huang, Chen Yisheng, Xu Xueming, Huang Caihong

Food and Machinery

The study combines the reaction of 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) with reduce discoloration and high-performance thin layer chromatography to establish a new method for the determination of rutin in healthcare products by HPTLC-DPPH. The effects of DPPH color reaction time, mobile phase, and optical density scanning parameters on chromatographic separation and densitometric results are investigated as well as recovery and precision of the method. The standard addition recovery rate of the method is 82%~97%, and the precision RSD is <10%. It was demonstrated that the method is able to circumvent the interferences from sample matrices with a simplified sample pretreatment. Therefore, the method is suitable for rapid detection of rutin in healthcare products.

Sources And Biological Functions Of Citrus Polymethoxy Flavones, Zhang Mengling, Li Qili, Li Gaoyang, Fu Fuhua, Xiao Yecheng, Shan Yang, Yu Huanling

Food and Machinery

This study reviewed the sources and biological functions of polymethoxy flavones, and discussed the existing problems in the current research.

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 …

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

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 …