Open Access. Powered by Scholars. Published by Universities.®

Agriculture Commons™

Open Access. Powered by Scholars. Published by Universities.®

2017

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 1291 - 1301 of 1301

Full-Text Articles in Agriculture

Identification Of Novel Seroreactive Antigens In Johne’S Disease Cattle By Using The Mycobacterium Tuberculosis Protein Array, John Bannantine, Joseph J. Campo, Lingling Li, Arlo Randall, Jozelyn Pablo, Craig A. Praul, Juan Antonio Raygoza Garay, Judith R. Stabel, Vivek Kapur Jan 2017

Identification Of Novel Seroreactive Antigens In Johne’S Disease Cattle By Using The Mycobacterium Tuberculosis Protein Array, John Bannantine, Joseph J. Campo, Lingling Li, Arlo Randall, Jozelyn Pablo, Craig A. Praul, Juan Antonio Raygoza Garay, Judith R. Stabel, Vivek Kapur

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

Johne’s disease, a chronic gastrointestinal inflammatory disease caused by Mycobacterium avium subspecies paratuberculosis, is endemic in dairy cattle and other ruminants worldwide and remains a challenge to diagnose using traditional serological methods. Given the close phylogenetic relationship between M. aviumsubsp. paratuberculosis and the human pathogen Mycobacterium tuberculosis, here, we applied a whole-proteome M. tuberculosis protein array to identify seroreactive and diagnostic M. avium subsp. paratuberculosis antigens. A genome-scale pairwise analysis of amino acid identity levels between orthologous proteins in M. avium subsp. paratuberculosis and M. tuberculosis showed an average of 62% identity, with more than half the orthologous proteins sharing …

Go to article

Comparative Water Quality And Channel Catfish Production In Earthen Ponds And A Biofloc Technology Production System, Bartholomew W. Green, Matthew E. Mcentire Jan 2017

Comparative Water Quality And Channel Catfish Production In Earthen Ponds And A Biofloc Technology Production System, Bartholomew W. Green, Matthew E. Mcentire

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

This 210-day study compared variation in water quality and fish growth for channel catfish (Ictalurus punctatus; 47 g/fish) stocked in earthen ponds (1.5 fish/m2, 14,820/ha) and in a biofloc technology (BFT) production system with high-density polyethylene-lined rectangular tanks (12.6 fish/m2, 126,000/ha). Feed input and culture environment affected water-quality dynamics. In ponds, phytoplankton uptake predominated and little nitrification occurred, whereas in the BFT system phytoplankton uptake and nitrification maintained low ammonia-nitrogen concentrations. Size classes of fish were skewed toward the larger market sizes in ponds and toward smaller market sizes in the BFT system. Mean …

Go to article

Effects Of Fertilizer And Shade Management On Nitrogen Mineralization, Nitrifying Microbial Abundance And Nitrogen-Fixing Capacity Of Erythrina Poeppigiana In Coffee (Coffea Arabica) Agroforestry Systems In Costa Rica, Stuart E. Barker Iii Jan 2017

Effects Of Fertilizer And Shade Management On Nitrogen Mineralization, Nitrifying Microbial Abundance And Nitrogen-Fixing Capacity Of Erythrina Poeppigiana In Coffee (Coffea Arabica) Agroforestry Systems In Costa Rica, Stuart E. Barker Iii

College of Graduate Studies: Theses & Dissertations

Worldwide chemical fertilizer use has increased by four times during the last 50 years. Conventional agricultural systems have a high nitrifying nature, resulting in a loss of nearly 70% of overall nitrogen (N) fertilizer inputs, an estimated economic loss of $81 billion. Over application of fertilizer is rampant in tropical developing nations in Central America, where coffee is major crop. Agroforestry offers ecologically sustainable land management strategies that promote the provision of ecosystem services such as, protection of biodiversity, climate change mitigation, and water and soil regulation. When legume trees are incorporated as the shade tree in coffee production, direct …

Go to article

Investigation Of Candidate Loci Associated With Maize Perennialism, Anjun Ma Jan 2017

Investigation Of Candidate Loci Associated With Maize Perennialism, Anjun Ma

Electronic Theses and Dissertations

Developing perennial grain crops is an effective and crucial way to prevent soil erosion caused by conventional agriculture of using annual crops while meeting the increasing need of global food demand. We hypothesized that the regrowth in Zea might be controlled by two dominant complementary genes. F1 hybrids were created by crossing Zea diploperennis Iltis, Doebley & R. Guzman with annual Zea mays L. ssp. mays inbred line B73. A Total of 134 F2 plants derived from nine F1 were planted and phenotyped. A subpopulation of 94 F2 plants were genotyped with Genotype-by- Sequencing (GBS) and called 10,431 SNPs after …

Go to article

Comprehensive Structural, Thermal And Toxicological Characterization Of 1-Ethyl-3-Methylimidazolium Alkylbenzenesulfonate Ionic Liquids, Hiranmayee Kandala Jan 2017

Comprehensive Structural, Thermal And Toxicological Characterization Of 1-Ethyl-3-Methylimidazolium Alkylbenzenesulfonate Ionic Liquids, Hiranmayee Kandala

Electronic Theses and Dissertations

Synthesis and characterization of 1-ethyl-3- methylimidazolium alkylbenzenesulfonate ionic liquids for extraction of lignin from prairie cord grass have been studied. The ionic liquids (ILs) 1-ethyl-3- methylimidazolium benzenesulfonate (EBS), 1-ethyl-3- methylimidazolium toluenesulfonate (ETS) and 1-ethyl-3- methylimidazolium xylenesulfonate (EXS) have been synthesized in this research. An extensive structural, physical, thermal and toxicological characterization has been performed to understand the behavior of these ionic liquids. The reaction yield for the synthesis of EBS, ETS, and EXS ionic liquids was determined to be 91.2 ± 1.5 %, 96.1 ± 0.7 %, 99.0 ± 0.5 % respectively. Spectral analysis using NMR and FTIR confirms the …

Go to article

Getting To Know Your Yield Response Better Through Whole-Field Randomized Experiments, Taro Mieno, David Bullock Jan 2017

Getting To Know Your Yield Response Better Through Whole-Field Randomized Experiments, Taro Mieno, David Bullock

Cornhusker Economics

Six researchers at the University of Nebraska- Lincoln are working on the USDA-NIFA-funded Data Intensive Farm Management (DIFM) project. DIFM is based at the University of Illinois, and also involves the Universities of Kentucky, Massachusetts, Maryland, and Illinois State. The overarching goal of the project is to collect production data after conducting large-scale, on-farm randomized input use field trials, and then using the information to inform growers of optimal input use practices to enhance their profits. DIFM researchers hope to find a win-win situation in which more efficient crop nutrient management both increases farm profits and water quality in the …

Go to article

Soil Erosion Risk Factors And The Impacts Of Diversification On Organic Strawberry Farms Along California’S Central Coast, Kay Sterner Jan 2017

Soil Erosion Risk Factors And The Impacts Of Diversification On Organic Strawberry Farms Along California’S Central Coast, Kay Sterner

Pomona Senior Theses

Soil erosion is a major issue that threatens to undermine our current system of agriculture. Due to the fact that this system is in turn the number one cause of erosion, agricultural practices in the United States need to be rethought. This study explores how traditional ideas of erosion risks are related to observed erosion on organic strawberry farms along California’s Central Coast. In addition, diversified farming systems are addressed as a possible solution for the current unsustainability of our farming practices. The data from this research suggest that diversity of crops on farms could be linked to less soil …

Go to article

Anti-Cancer And Bioavailabilty Of Arachidin-1 And Arachidin-3 In Colon Cancer Cells, Macy R. Shirley, Cindi Brownmiller, Wing Shun Lam, Sun-Ok Lee Jan 2017

Anti-Cancer And Bioavailabilty Of Arachidin-1 And Arachidin-3 In Colon Cancer Cells, Macy R. Shirley, Cindi Brownmiller, Wing Shun Lam, Sun-Ok Lee

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Cancer is a common cause of death in the United States and locally in the state of Arkansas. Modifiable factors such as tobacco use, physical activity, and diet lead to reduced incidence of colon cancer diagnosis. Plant-based foods may contain phytochemicals that confer health promoting properties. Specifically, peanuts contain phytochemicals known as resveratrol, arachidin-1, and arachidin-3 that have been linked to anticancer activities. However, few research studies have been done on arachidin-1 and arachidin-3 that could develop understanding of their health promoting properties or nutraceutical applications. The objectives of this study were to (1) determine the most effective concentration of …

Go to article

Weaning Strategies In Beef Cattle To Reduce Stress, Matthew Garcia, Kerry Rood, Clark Israelsen Jan 2017

Weaning Strategies In Beef Cattle To Reduce Stress, Matthew Garcia, Kerry Rood, Clark Israelsen

All Current Publications

This fact sheet considers weaning strategies for beef cattle, including the advantages and disadvantages of fenceline weaning, and twostep weaning.

Go to article

Evaluation Of The Brazilian Agrarian Reform Objective: Agricultural Production Yield Change, Tiffany Kwader Harbour Jan 2017

Evaluation Of The Brazilian Agrarian Reform Objective: Agricultural Production Yield Change, Tiffany Kwader Harbour

Walden Dissertations and Doctoral Studies

Brazil has an active agrarian reform policy program, publicly organized by the federal government and publicly administered at the state level by the National Institute for Colonization and Agrarian Reform. The objective of the agrarian reform policy program is to retitle unproductive and underproductive rural lands to increase agricultural production and land use. Previous agrarian reform researchers have examined quantities of land redistributed, rural technology developments, and the impact of social movements on land redistribution, but a knowledge gap remains regarding the correlation of agricultural production yields in rural municipalities before and after policy program participation. The State of Ceará …

Go to article

Restoring And Sustaining Smallholder Kappaphycus Alvarezii Farming Post-Typhoon Haiyan/Yolanda In Molocaboc, Central Philippines, David C. Fenlon Jan 2017

Restoring And Sustaining Smallholder Kappaphycus Alvarezii Farming Post-Typhoon Haiyan/Yolanda In Molocaboc, Central Philippines, David C. Fenlon

Dissertations, Master's Theses and Master's Reports

The farming of marine seaweed has the potential to provide both nutritional and financial resources to developing communities such as the Molocaboc Islands in the Philippines. To foster this mariculture development approximately $1,000 USD in grant funds received from the US-Philippines Society was used to purchase materials needed to replace seaweed production infrastructure lost to Typhoon Haiyan (known as Super Typhoon Yolanda in the Philippines). The goal was to restore and expand smallholder farming of the seaweed Kappaphycus alvarezii (locally known as ‘guso’ in the Visayan dialect) in the Molocaboc Islands, thereby increasing harvest yields as compared to those …

Go to article

First Prev