Agriculture Commons^™

Phosphorus Vs. Mycorrhiza: Mitigation Of Lead Uptake In Tomatoes, Helen Senerchia, Liz Miernicki, Andrew Margenot

PRECS 2018

This study seeks to understand how the mutualist relationship between arbuscular mycorrhizal fungi (AM) and Solanum lycopersicum (tomato) affects the uptake and distribution of iron (Pb) found in soil by tomatoes and how the effects of phosphorous (P) application may pose a trade-off between AM and P mitigation of bioavailability of Pb.

Sustainability Partnerships And Viticulture Management In California, Vicken Hillis, Mark Lubell, Matthew Hoffman

Human-Environment Systems Research Center Faculty Publications and Presentations

Agricultural regions in the United States are experimenting with sustainability partnerships that, among other goals, seek to improve growers' ability to manage their vineyards sustainably. In this paper, we analyze the association between winegrape grower participation in sustainability partnership activities and practice adoption in three winegrowing regions of California. Using data gathered from a survey of 822 winegrape growers, we find a positive association between participation and adoption of sustainable practices, which holds most strongly for practices in which the perceived private benefits outweigh the costs, and for growers with relatively dense social networks. We highlight the mechanisms by which …

Louisiana Agriculture Summer, 2018, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

Economic Development In Nonmetropolitan Nebraska: Internet Use, Nature-Based Tourism, Federal Tax Policy And Workforce Development: 2018 Nebraska Rural Poll Results, Rebecca J. Vogt, Cheryl A. Burkhart-Kriesel, Randolph L. Cantrell, Bradley Lubben, L. J. Mcelravy, Timothy Meyer

Rural Futures Institute: Publications

Conclusion

The proportion of rural Nebraskans accessing the Internet using their cell phone has increased compared to two years ago. But, the proportion subscribing to high-speed Internet service at home remained stable during the past two years. Persons living in or near the smallest communities are less likely than persons living in or near larger communities to have high-speed Internet service at home.

Not many rural Nebraskans report significant limitations from their home Internet service on their ability to do most tasks. At least one in ten report being limited significantly or not being able to play real time video …

The Effects Of Fungicide And Genetics On Fungal Diseases On Wheat In Nebraska With Emphasis On Stem Rust, Javed Sidiqi

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

Foliar fungal diseases of wheat (Triticum aestivum L.) pose a serious threat to wheat production. Despite the significant progress that has been made limiting major fungal diseases by developing resistant cultivars, these diseases challenge the economic sustainability of wheat production. The objectives of this research were (1) To determine the effect of fungal plant pathogens on grain yield in eastern Nebraska, released and pre-release winter wheat genotypes were studied in fungicide treated and untreated plots from 2015 to 2017. (2) To determine if Sr7b is present using allelism tests in ‘Gage’ wheat as previously hypothesized.

Sixty genotypes were planted …

Collecting Carbon: An Analysis Of Soil Carbon In Conservation Reserve Program Fields And Agricultural Fields, Cody Welcher, Destiny Magee, Kenneth Elgersma

Undergraduate Student Work

Intensive agricultural practices are associated with detrimental effects to the environment including, but not limited to, increasing the rate of soil erosion, introducing pollutants to water supply, reduced habitat for various species, and reduced atmospheric carbon sequestration in soils.

The Conservation Reserve Program allows farmers to enroll sensitive lands into the program and out of circulation for agricultural purposes. It has been shown to increase soil carbon sequestration, reduce erosion, increase water and air quality, and provide habitat restoration for displaced species, along with other benefits.

Comparison Of Traditional And Alternative Ingredients On Meat Curing Reactions Using A Model System, Faith Rasmussen

Department of Animal Science: Dissertations, Theses, and Student Research

Consumer’s negative perception of “chemical-sounding” ingredients has increased the use of alternative ingredients. The objective of this study was to determine the effect traditional (sodium nitrite with or without sodium erythorbate) or alternative (celery juice powder with or without acerola cherry powder) curing systems with different ingoing concentrations of sodium nitrite using model meat solutions. Curing systems with reducing agents developed the most cured meat pigment (p < 0.001). Using more than 50 ppm of nitrite did not further increase cured meat pigment (p < 0.001). Curing systems with reducing agents and 50 ppm or greater nitrite had the least residual nitrite (p < 0.001). Alternative curing systems had the most residual sulfhydryl groups when formulated with 100 ppm or more nitrite (p < 0.001). Treatments with reducing agents had greater residual reducing capacity than treatments without reducing agents (p < 0.001). Both alternative and traditional curing systems develop similar cured meat pigment but differences in the nitrosation of cysteine exist.

Advisor: Gary A. Sullivan

Dairy In Your Child's Diet, Richelle Hudson, Mateja R. Savoie-Roskos, Carrie Durward

All Current Publications

This fact sheet presents the health benefits of dairy and busts some common myths to assist you in making informed decisions when purchasing dairy products for your children. It also includes information on dairy alternatives for children who, for one reason or another, do not consume dairy products.

Market Goats: Tips For Beginning A Livestock Project, Deric Despain, Karah Nay, Kevin Heaton

All Current Publications

The purpose of this fact sheet is to provide several tips for beginning a market goat 4-H youth livestock project. 4-H market goat projects are gaining popularity, as seen by the increased level of competition and 4-H livestock shows.

Benefits Of Family Mealtime, Cindy Nelson, Makendra Goff

All Current Publications

Working together as a family can help establish a regular family mealtime habit and potential positive benefits and outcome. This fact sheet tells how.

Leafminers Of Vegetable Crops (Order: Diptera; Family: Agromyzidae), Diane G. Alston, Ann Mull

All Current Publications

Agromyzid leafminers are small black-and-yellow flies that are pests of vegetable and ornamental crops throughout the world. In Utah, three species of leafminer flies attack vegetable crops: American serpentine leafminer [Liriomyza trifolii (Burgess)], pea leafminer [Liriomyza huidobrensis (Blanchard)], and vegetable leafminer [Liriomyza sativae (Blanchard)]. All three species are native to the New World (Western Hemisphere) but have spread worldwide. In the U.S., leafminers are most problematic in the southern states from Florida to California, and in Hawaii. Allium leafminer, [Phytomyza gymnostoma (Loew)] is a recent invasive pest to the northeastern U.S. that targets both wild and …

Equine West Nile Encephalitis, Karl Hoopes, Karah Nay

All Current Publications

West Nile Virus (WNV) was first introduced to the United States in 1999. Since then, the disease has spread to all of our equine populations. Spread by mosquitos from infected birds to horses, WNV can cross the blood-brain barrier to cause an encephalomyelitis. Clinical signs can include weakness, ataxia, muscle twitching, coma, and even death. Prevention, by vaccination and reducing mosquito numbers, is much more effective than treating the disease.

Strategies For Managing Soil Fertility And Health In Organic Orchards - A Fact Sheet, E.O. Thomsen, C.M. Culumber, J.R. Reeve, G. Cardon, D. Alston, B.L. Black, C.V. Ransom

All Current Publications

This fact sheet is a report of research to provide fruit growers with locally adapted advice and solutions for managing soil fertility in certified organic stone-fruits.It includes information of transitioning to organic management; building soil organic matter and providing appropriate nutrients, including phosphorus, potassium, seconary nutrients and trace elements; soil testing; cover crops; mulches; and possible organic management systems.

Smart Vertical Farm System (Svfs), Sarasit Sirawattanakul

The International Student Science Fair 2018

The unremitting trends of increasing population, urbanization, diminishing water supply, and continuing climate change have contributed to declining stocks of arable land per person. Land available for farming is shrinking, and the demand for food is growing. All of these lead to food insecurity. For the first version of Smart Vertical Farm System is designed to increase food productions by an automatic system. It built with shelves which support soil and hydroponic system, stacked vertically. The system first shovels the soil in the tray and sews the seeds. There is also additional watering system. The hydroponic parts are on the …

Application Of Agricultural Waste Biochar For Canteen Wastewater Treatment In Chulalongkorn University, Norakamon Ariyakanon, Chalisa Vikrompanitkul

The International Student Science Fair 2018

The potential use of biochar in canteen wastewater remediation. Biochars were prepared from rice straw, bagasse or coir, produced by slow temperature pyrolysis at 300^oC for 1 h. This study characterized the physical and chemical properties of biochar products related to wastewater treatment. The physical and chemical parameters of wastewater were analyzed before and after treatment with the three different types of biochar. Measured parameters included, pH, biological oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids (TSS), oil and grease, total phosphorus (TP) and total nitrogen (TKN). The biochar derived from rice straw contained the highest …

Skeleton Weed Program: Annual Report To Grain Growers 2017/2018, Department Of Primary Industries And Regional Development, Western Australia

Biosecurity published reports

The Grains, Seeds and Hay Industry Management Committee (GSHIMC) believes the current program is delivering the best value for the funding provided and is achieving the Project Outcomes of eradication (where possible), management (on infested sites), and limiting the spread of Skeleton weed across the cereal growing districts.

There has been a significant increase in the infested area of Skeleton weed in 2017/18. Most of this increase was in the eastern zone where wet conditions favoured Skeleton weed in late 2017.

Many landholders in these areas also had difficulty achieving “long term” control over summer and infested areas needed monitoring …

Bedstraw Eradication Program: Annual Report To Grain Growers 2017/2018, Department Of Primary Industries And Regional Development, Western Australia

Biosecurity published reports

The Grains, Seeds and Hay Industry Management Committee (GSHIMC) believes the current program is delivering the best value for the funding provided and is achieving the project outcomes of containment and eradication.

Approved programs are developed annually for each infested property in consultation with GSHIMC, the Department of Primary Industries and Regional Development (DPIRD) and the landholders detailing management actions, estimated costs and timeframes of the agreed actions.

The two infested properties have now entered the final Release Phase of a nine year eradication program. The program is implemented by DPIRD and includes six consecutive years of winter spray treatments, …

Impact Of Temperature, Plant Species, And Sorghum Cultivar On The Population Dynamics Of Melanaphis Sacchari, Monique Ferreira De Souza

LSU Doctoral Dissertations

Sugarcane aphid, Melanaphis sacchari Zehner, is now widely established in sorghum, Sorghum bicolor L., production areas of the United States and is an important economic pest. However, detailed studies of temperature, host range and plant resistance effects on the biology and population parameters of the M. sacchari biotype responsible for the sorghum outbreak in the United States have not been performed previously. Therefore, the present study aimed to investigate: 1) How temperatures affect M. sacchari 2) M. sacchari interaction with host plants 3) M. sacchari interaction with sorghum genotypes. The response of M. sacchari to six different constant temperatures (15, …

Structural Characteristics Of Millet Glutenin And Gliadin, Ji Zhongwei, Dai Tiantian, Mao Jian

Food and Machinery

Millet glutenin and gliadin was obtained by alkali extraction and acid precipitation and millet gliadin was distracted by ethanol. Then their structural characteristics were analyzed. SDS-PAGE electrophoresis results showed that the molecular weight of the millet gliadin was small, while millet glutenin was distributed from high molecular weight to low molecular weight. Furthermore, the XRD analysis showed that both the two kinds of proteins were amorphous structures. The secondary structure was measured by circular dichroism. Millet gliadin belonged to all alpha structure, and its order was better than that of millet alkali soluble protein. Moreover, by atomic force microscopy analysis, …

Effect Of Intermolecular Interaction On Gel Formation Of Preserved Egg Yolk, Ai Minmin, Tan Gting, Jiang Aimin, Yang Yijia, You Yuting

Food and Machinery

The preserved eggs were processed by immersion method. The effect of internal interactions on the formation of egg yolk gel during salting and ageing were determined by fluorescence spectrophotometer and FTIR et al. The sum of α-helical and β-turn of the secondary structure of the exterior egg yolk protein decreased by 54.71% under strong alkaline environment, with the surface hydrophobicity decreased significantly (P＜0.05), and the dramatic increase of ion bonds and disulfide bonds promoted the egg yolk proteins to form a gel. The sum of α-helical and β-turn of the secondary structure of the interior egg yolk protein increased by …