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Articles 1 - 30 of 498
Full-Text Articles in Plant Sciences
Integrated Management Strategies For Phytophthora Sojae Combining Host Resistance And Seed Treatments, A. E. Dorrance, A. E. Robertson, S. Cianzo, L. J. Giesler, C. R. Grau, M. A. Draper, A. U. Tenuta, T. R. Anderson
Integrated Management Strategies For Phytophthora Sojae Combining Host Resistance And Seed Treatments, A. E. Dorrance, A. E. Robertson, S. Cianzo, L. J. Giesler, C. R. Grau, M. A. Draper, A. U. Tenuta, T. R. Anderson
Department of Plant Pathology: Faculty Publications
Phytophthora sojae has re-emerged as a serious soybean pathogen in the past decade. This may be due in part to changes in resistance levels in current cultivars, adoption of P. sojae populations to deployed Rps genes, and highly favorable environments in the past decade. This multilocation study evaluated the effect of seed treatments on the incidence and severity of Phytophthora root and stem rot on soybeans with different combinations of Rps genes and levels of partial resistance. The efficacy of the seed treatments was highly variable across locations. Seed treatments (metalaxyl and mefenoxam) provided protection and increased yields across cultivars …
Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, October 1, 2008 To December 31, 2008, Margaret N. Rees
Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, October 1, 2008 To December 31, 2008, Margaret N. Rees
Vegetation Monitoring
Executive Summary
- The Weed Sentry program surveyed over 62 miles of federal land by vehicle and foot in Clark County for incipient populations of exotic plants.
- New weed monitoring botanists and botany assistant joined the staff during this period.
- Vegetation staff presented four presentations at the Natural Areas Association annual conference in Nashville, TN and eight poster presentations at the “wildfires and invasive plants in American deserts” meeting in Reno, NV.
- Several new Brassica tournefortii experiments were initiated.
Joint Fire Science Program – Lake Mead National Recreation Area: Revegetating Burned Arid Lands: Identifying Successful Native Species Using Trait And Competition Analysis, Quarterly Progress Report, October 1 — December 31, 2008, Margaret N. Rees
Fire Science
• Presented poster at Natural Areas Conference in Nashville, TN
• Initiated granivory study at Goodsprings.
• Outplanted 2376 plants for Experiment 1 at Lake Mead nursery.
• Presented poster at Wildfires and Invasive Plants in American Deserts conference in Reno, NV.
• Submitted manuscript covering our distance from road - microsite invasibility study to Journal of Arid Environments.
Northeast Research Station Watertown, South Dakota Annual Progress Report, 2008, Agricultural Experiment Station, Plant Science Department
Northeast Research Station Watertown, South Dakota Annual Progress Report, 2008, Agricultural Experiment Station, Plant Science Department
Agricultural Experiment Station and Research Farm Annual Reports
This is the 2008 annual progress report for the Northeast Research Station in Watertown, South Dakota. This report is issued by the South Dakota Agricultural Experiment Station and the South Dakota State University Plant Science Department. This report includes weather data, yield comparisons, crop performance trials, corn trials, soybean trials, winter wheat performance testing, Barley Foliar information, weed and pest control, herbicide demonstrations, canola and flax variety trials and more.
A High-Oleic-Acid And Low-Palmitic-Acid Soybean: Agronomic Performance And Evaluation As A Feedstock For Biodiesel, George L. Graef, Bradley J. Lavallee, Patrick Tenopir, Mustafa Tat, Bruce Schweiger, Anthony J. Kinney, Jon H. Van Gerpen, Thomas E. Clemente
A High-Oleic-Acid And Low-Palmitic-Acid Soybean: Agronomic Performance And Evaluation As A Feedstock For Biodiesel, George L. Graef, Bradley J. Lavallee, Patrick Tenopir, Mustafa Tat, Bruce Schweiger, Anthony J. Kinney, Jon H. Van Gerpen, Thomas E. Clemente
Department of Agronomy and Horticulture: Faculty Publications
Phenotypic characterization of soybean event 335-13, which possesses oil with an increased oleic acid content (> 85%) and reduced palmitic acid content (< 5%), was conducted across multiple environments during 2004 and 2005. Under these conditions, the stability of the novel fatty acid profile of the oil was not influenced by environment. Importantly, the novel soybean event 335-13 was not compromised in yield in both irrigated and non-irrigated production schemes. Moreover, seed characteristics, including total oil and protein, as well as amino acid profile, were not altered as a result of the large shift in the fatty acid profile. The novel oil trait was inherited in a simple Mendelian fashion. The event 335-13 was also evaluated as a feedstock for biodiesel. Extruded oil from event 335-13 produced a biodiesel with improved cold flow and enhanced oxidative stability, two critical fuel parameters that can limit the utility of this renewable transportation fuel.
Early Post-Fire Recovery On A Heavily Visited Mojave Desert Burn: Red Rock Canyon Near Las Vegas, Nevada, Scott R. Abella, E. Cayenne Engel, Christina L. Lund, Jessica E. Spencer
Early Post-Fire Recovery On A Heavily Visited Mojave Desert Burn: Red Rock Canyon Near Las Vegas, Nevada, Scott R. Abella, E. Cayenne Engel, Christina L. Lund, Jessica E. Spencer
Fire Science Presentations
Wildfire has become widespread in southwestern USA deserts. In a record 2005 fire season in the Mojave Desert, for example, more than 385,000 hectares burned (Brooks and Matchett 2006). This burned area is approximately 3% of the entire Mojave Desert. Fueled in large part by exotic annual grasses, these fires burned desert ecosystems thought to have only burned infrequently historically. Burns now occupy significant portions of desert landscapes, posing prominent management challenges. Improving our understanding of plant recovery on desert burns is important for evaluating future fire hazard, whether natural revegetation will meet management objectives, and for planning active revegetation …
Using A Diverse Seed Mix To Establish Native Plants On A Sonoran Desert Burn, Scott R. Abella, John L. Gunn, Mark L. Daniels, Judith D. Springer, Susan E. Nyoka
Using A Diverse Seed Mix To Establish Native Plants On A Sonoran Desert Burn, Scott R. Abella, John L. Gunn, Mark L. Daniels, Judith D. Springer, Susan E. Nyoka
Fire Science Presentations
- Revegetating burned areas is a formidable challenge facing resource managers in southwestern United States arid lands.
- Natural revegetation of desert burns by native species may be slow, or dominated by exotic annual grasses that perpetuate a frequent-fire regime.
- Resource managers may have several reasons for actively revegetating burns with native species, such as for providing competition with exotic species, minimizing soil erosion and dust pollution, and improving aesthetics.
- The use of native species in revegetation has been limited by a lack of available seed and by findings that native desert species are difficult to establish (e.g., Bainbridge and Virginia 1990, …
Post-Fire Plant Recovery In The Mojave And Sonoran Deserts Of Western North America, Scott R. Abella, Public Lands Institute, Department Of Environmental Studies, University Of Nevada, Las Vegas
Post-Fire Plant Recovery In The Mojave And Sonoran Deserts Of Western North America, Scott R. Abella, Public Lands Institute, Department Of Environmental Studies, University Of Nevada, Las Vegas
Fire Science Presentations
Fire is thought to have been generally rare historically in the Mojave and Sonoran Deserts. However, invasion by exotic grasses (e.g., Schismus spp.) has increased fuel continuity, promoting fire in these deserts. Succession and recovery are not well understood processes in deserts, nonetheless for a novel disturbance like fire. In addition to helping build theories of desert succession and recovery, information on post-fire recovery has numerous practical implications (e.g., determining whether active revegetation is needed). Systematic reviews provide a means for obtaining literature using reproducible search criteria. This approach facilitates a balanced appraisal of available information, synthesizes scattered literature, and …
Forage News [2008-12], Department Of Plant And Soil Sciences, University Of Kentucky
Forage News [2008-12], Department Of Plant And Soil Sciences, University Of Kentucky
Forage News
- Improved Grass Varieties Benefit Farmers
- Alfalfa and the Environment
- Grass May Help Balance Hot Dairy Diets
- Ethanol Maker Files for Bankruptcy Relief
- Pricing Hay: Consider Plant Nutrient Value
- Performance and Physiology of Steers Grazing Toxic Tall Fescue as Influenced by Feeding Soybean Hulls and Steroidal Implants
- Upcoming Events
Sp618-2008-2008 Corn Hybrid And Sweet Sorghum Silage Tests In Tennessee, The University Of Tennessee Agricultural Extension Service
Sp618-2008-2008 Corn Hybrid And Sweet Sorghum Silage Tests In Tennessee, The University Of Tennessee Agricultural Extension Service
Field & Commercial Crops
No abstract provided.
Rr09-03-2008 Soybean Variety Performance Tests In Tennessee, The University Of Tennessee Agricultural Extension Service
Rr09-03-2008 Soybean Variety Performance Tests In Tennessee, The University Of Tennessee Agricultural Extension Service
Field & Commercial Crops
No abstract provided.
W209 Cutleaf Evening Primrose (Oenothera Laciniata Hill), The University Of Tennessee Agricultural Extension Service
W209 Cutleaf Evening Primrose (Oenothera Laciniata Hill), The University Of Tennessee Agricultural Extension Service
Field & Commercial Crops
No abstract provided.
Arkansas Corn And Grain Sorghum Performance Tests 2008, D. G. Dombek, R. D. Bond, I. L. Eldridge, R. M. Pryor
Arkansas Corn And Grain Sorghum Performance Tests 2008, D. G. Dombek, R. D. Bond, I. L. Eldridge, R. M. Pryor
Arkansas Agricultural Experiment Station Research Series
Corn and grain sorghum performance tests are conducted each year in Arkansas by the University of Arkansas Division of Agriculture. The tests provide information to companies marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating recommendations for producers.
Effects Of Olfactory And Visual Predators On Nest Success And Nest-Site Selection Of Waterfowl In North Dakota, Jennifer Borgo
Effects Of Olfactory And Visual Predators On Nest Success And Nest-Site Selection Of Waterfowl In North Dakota, Jennifer Borgo
Green Canyon Environmental Research Area, Logan Utah
No abstract provided.
Chlorovirus-Mediated Membrane Depolarization Of Chlorella Alters Secondary Active Transport Of Solutes, Irina V. Agarkova, David Dunigan, James R. Gurnon, Timo Greiner, Julia Barres, Gerhard Thiel, James L. Van Etten
Chlorovirus-Mediated Membrane Depolarization Of Chlorella Alters Secondary Active Transport Of Solutes, Irina V. Agarkova, David Dunigan, James R. Gurnon, Timo Greiner, Julia Barres, Gerhard Thiel, James L. Van Etten
Department of Plant Pathology: Faculty Publications
Paramecium bursaria chlorella virus 1 (PBCV-1) is the prototype of a family of large, double-stranded DNA, plaque-forming viruses that infect certain eukaryotic chlorella-like green algae from the genus Chlorovirus. PBCV-1 infection results in rapid host membrane depolarization and potassium ion release. One interesting feature of certain chloroviruses is that they code for functional potassium ion-selective channel proteins (Kcv) that are considered responsible for the host membrane depolarization and, as a consequence, the efflux of potassium ions. This report examines the relationship between cellular depolarization and solute uptake. Annotation of the virus host Chlorella strain NC64A genome revealed 482 putative …
Mexican Cliffrose In The Landscape, Heidi Kratsch, Graham Hunter
Mexican Cliffrose In The Landscape, Heidi Kratsch, Graham Hunter
Gardening
No abstract provided.
No Acute Effects Of Grape Juice On Appetite, Implicit Memory And Mood, Sara J. Hendrickson, Richard D. Mattes
No Acute Effects Of Grape Juice On Appetite, Implicit Memory And Mood, Sara J. Hendrickson, Richard D. Mattes
Botanicals Research Center for Age-Related Diseases Publications
Background: Animal experiments document effects of grape juice on cognitive performance and motor skills, and observational studies in humans suggest an inverse association between flavonoid intake and cognitive decline. These effects may be related to the antioxidant properties of polyphenols. Juice consumption and flavonoid intake may also affect appetite. Objective: To study the acute effects of grape juice consumption on appetite, mood and implicit memory during a time of increased lethargy - the post-lunch dip. Design: Thirty-five participants with a mean age of 26 years who smoked a mean of 11 cigarettes/day for 8 years were included in the study. …
Shaping The Cross Timbers With Fire And Grazing, John A. Guretzky
Shaping The Cross Timbers With Fire And Grazing, John A. Guretzky
Department of Agronomy and Horticulture: Faculty Publications
Recently, our agricultural research team has been asked to provide talks during tours of our Oswalt Road Ranch. The Oswalt Road Ranch is a 4,992-acre property in Love County, Okla., willed to us by D. Joyce Coffey. The Noble Foundation took full control of the property in 2000. The ranch is a valuable piece of property because of its unique natural beauty and potential to support livestock production and wildlife habitat. On the tours, we have been showing off our new state-of-the art livestock handling facilities and providing information about results from recent research on by-product feeds, the Noble Foundation …
Early Season Weed Suppression In Buckwheat Using Clopyralid, Ona Sakaliene, Sharon A. Clay, William C. Koskinen, Gediminas Almantas
Early Season Weed Suppression In Buckwheat Using Clopyralid, Ona Sakaliene, Sharon A. Clay, William C. Koskinen, Gediminas Almantas
Agronomy, Horticulture and Plant Science Faculty Publications
Currently there are no herbicides registered for direct application to buckwheat for broadleaf weed control. This 4-yr Lithuanian study examined weed control using several rates of clopyralid alone or combined with a single rate of desmedipham. Most applications were applied at the 1-leaf stage of crop growth, however, one rate of clopyralid was applied pre-emergence (PRE) in 2 of the 4 yr. Buckwheat injury was evident within a few days after application (or emergence) with all treatments, but by harvest, no symptoms were evident. In the 2 yr with greatest weed densities, densities were reduced with increasing clopyralid rates alone …
Efficient Utilization Of Water And Nitrogen Resources For Grain Sorghum Under Rainfed Conditions, Akwasi A. Abunyewa
Efficient Utilization Of Water And Nitrogen Resources For Grain Sorghum Under Rainfed Conditions, Akwasi A. Abunyewa
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Grain sorghum (Sorghum bicolor L. Moench) is the fifth world leading cereal after maize, wheat, rice and barley. The crop can yield reasonably well under adverse conditions of low soil water and high temperature. A three year field study was conducted in a transect across Nebraska where annual mean precipitation ranges from 300 to 900 mm yr-1 to evaluate management practices to optimize yield potential under water limiting conditions. Loss in grain yield due to planting configurations ranged from 20 to 30% with skip-row configurations compared to conventional planting configuration (s0) at the site with greatest precipitation. At …
Mathematical Models Of Zea Mays: Grain Yield And Aboveground Biomass Applied To Ear Flex And Within Row Spacing Variability, Todd Curtis Ballard
Mathematical Models Of Zea Mays: Grain Yield And Aboveground Biomass Applied To Ear Flex And Within Row Spacing Variability, Todd Curtis Ballard
Masters Theses & Specialist Projects
Field studies were conducted during the summers of 2007 and 2008 at the Agricultural Research and Education Complex, Western Kentucky University, Warren County, KY and commercial production fields in Caldwell County, KY, Warrick County IN, and Vanderburgh County, IN. The goals of these studies were to further validate the Duncan grain yield model, the Russell aboveground biomass model, and to study the effect of inconsistent spacing within rows on Zea mays L. yield. Plant spacing other than uniform decreases grain yield and profitability. The population experiments conducted at the Warren County location were a randomized complete block design with three …
Apoyo Del Intsormil Incrementa La Produccion Y Productividad Del Cultivo De Sorgo En America Central, Intsormil
Apoyo Del Intsormil Incrementa La Produccion Y Productividad Del Cultivo De Sorgo En America Central, Intsormil
INTSORMIL Impacts and Bulletins
El INSORMIL ha apoyado, las actividades de investigación y transferencia de tecnología de sorgo desde 1981, con énfasis en Nicaragua y El Salvador pero en los ultimos años se viene expandiendo a otros países de America Central. Estadísticas del Ministerio de Agricultura y Ganadería de El Salvador, indican un signifi cativo incremento en la producción nacional de grano de sorgo en la misma superfi cie sembrada desde hace 9 años, debido principalmente al incremento en el rendimiento por unidad de superfi cie, tal como se presenta en el gráfi co. En este gráfi co puede verse que desde 1999 al …
Intsormil Support Contributes To Increased Sorghum Yields In Central America, Intsormil
Intsormil Support Contributes To Increased Sorghum Yields In Central America, Intsormil
INTSORMIL Impacts and Bulletins
INTSORMIL has supported sorghum research and technology transfer activities in Central America since 1981. Emphasis has been on El Salvador and Nicaragua but now the program is expanding to other Central American countries. Statistics provided by the Ministry of Agriculture indicate a significant advance in sorghum production in El Salvador. As shown in the graph below surface area in ha sown to sorghum during the period 1999-2009 did not increase (about 105,000 ha). However, during that same period grain production increased from 140,000 MT to 186,000 MT, an increase of 33%. This is due to the dramatic yield increase per …
Altos Costos Del Trigo: El Caso De La Harina De Sorgo En La Industria De La Panifi Cacion De El Salvador, Intsormil
INTSORMIL Impacts and Bulletins
El programa de tecnología de alimentos del CENTA, con el apoyo del INTSORMIL ha estado desarrollando recetas de pan a base de harina de sorgo y probándolas en pequeñas y medianas panaderías de El Salvador por muchos años. Ahora con los precios de harina de trigo a $0.57 por libra, los panaderos de El Salvador han demostrado un creciente interés en el uso del sorgo a un costo de $0.32 por libra como un sustituto parcial de la harina de trigo en sus productos. Los tecnólogos de alimentos del CENTA han estado promoviendo el uso y consumo de harina de …
First Report Of Soybean Rust Caused By Phakopsora Pachyrhizi In Nebraska, S. R. Watson, L. J. Giesler, A. D. Ziems, T. E. Brovont
First Report Of Soybean Rust Caused By Phakopsora Pachyrhizi In Nebraska, S. R. Watson, L. J. Giesler, A. D. Ziems, T. E. Brovont
Department of Plant Pathology: Faculty Publications
Soybean rust caused by Phakopsora pachyrhizi Sydow was first observed in the continental United States in Louisiana in November 2004 (2). As part of the national soybean rust monitoring effort, samples were collected on 3 October 2007 during the scouting of fields with green leaves in southeastern Nebraska. After incubation at room temperature for 24 h, uredinea and urediniospores were observed with microscopic examination. Urediniospores were obovoid, hyaline to pale brown, and measured 20 to 30 × 18 to 20 μm.
Alternative Cereal Processing Technologies [Conference Program And Proceedings] (Lobatse, Botswana, November 4-6, 2008), Martin Kebakile, Kemelo Ookeditse
Alternative Cereal Processing Technologies [Conference Program And Proceedings] (Lobatse, Botswana, November 4-6, 2008), Martin Kebakile, Kemelo Ookeditse
INTSORMIL Presentations
Objectives of the workshop:
To review the current status of local cereals production and processing explore opportunities for growing the cereal industry.
To promote diversification of cereal processing by sensitizing all players and stakeholders in the cereals industry about readily available alternative cereals processing technologies which have commercial potential.
To promote and strengthen collaboration between local and international researchers, as well as fostering strategic partnerships between researchers and users of technologies to develop customer tailored processing technologies.
Genetic Change Following Fire In Populations Of A Seed-Banking Perennial Plant, Rebecca W. Dolan, Pedro F. Quintana-Ascencio, Eric S. Menges
Genetic Change Following Fire In Populations Of A Seed-Banking Perennial Plant, Rebecca W. Dolan, Pedro F. Quintana-Ascencio, Eric S. Menges
Scholarship and Professional Work - LAS
Disturbances such as fire have the potential to remove genetic variation, but seed banks may counter this loss by restoring alleles through a reservoir effect. We used allozyme analysis to characterize genetic change in two populations of the perennial Hypericum cumulicola, an endemic of the fire-prone Florida scrub. We assessed genetic variation before and 1, 2, and 3 years after fire that killed nearly all aboveground plants. Populations increased in size following fire, with most seedlings likely recruited from a persistent seed bank. Four of five loci were variable. Most alleles were present in low frequencies, but our large sample …
Epithelial And Mesenchymal Cells In The Bovine Colonic Mucosa Differ In Their Responsiveness To Escherichia Coli Shiga Toxin 1, Ivonne Stamm, Melanie Mohr, Philip S. Bridger, Elmar Schröpfer, Matthias König, William C. Stoffregen, Evelyn A. Dean-Nystrom, Georg Baljer, Christian Menge
Epithelial And Mesenchymal Cells In The Bovine Colonic Mucosa Differ In Their Responsiveness To Escherichia Coli Shiga Toxin 1, Ivonne Stamm, Melanie Mohr, Philip S. Bridger, Elmar Schröpfer, Matthias König, William C. Stoffregen, Evelyn A. Dean-Nystrom, Georg Baljer, Christian Menge
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Bovine colonic crypt cells express CD77 molecules that potentially act as receptors for Shiga toxins (Stx). The implication of this finding for the intestinal colonization of cattle by human pathogenic Stx-producing Escherichia coli (STEC) remains undefined. We used flow cytometric and real-time PCR analyses of primary cultures of colonic crypt cells to evaluate cell viability, CD77 expression, and gene transcription in the presence and absence of purified Stx1. A subset of cultured epithelial cells had Stx receptors which were located mainly intracellularly, with a perinuclear distribution, and were resistant to Stx1-induced apoptosis and Stx1 effects on chemokine expression patterns. In …
Technical Variables In High-Throughput Mirna Expression Profiling: Much Work Remains To Be Done, Peter T. Nelson, Wang-Xia Wang, Bernard R. Wilfred, Guiliang Tang
Technical Variables In High-Throughput Mirna Expression Profiling: Much Work Remains To Be Done, Peter T. Nelson, Wang-Xia Wang, Bernard R. Wilfred, Guiliang Tang
Pathology and Laboratory Medicine Faculty Publications
MicroRNA (miRNA) gene expression profiling has provided important insights into plant and animal biology. However, there has not been ample published work about pitfalls associated with technical parameters in miRNA gene expression profiling. One source of pertinent information about technical variables in gene expression profiling is the separate and more well-established literature regarding mRNA expression profiling. However, many aspects of miRNA biochemistry are unique. For example, the cellular processing and compartmentation of miRNAs, the differential stability of specific miRNAs, and aspects of global miRNA expression regulation require specific consideration. Additional possible sources of systematic bias in miRNA expression studies include …
Forage News [2008-11], Department Of Plant And Soil Sciences, University Of Kentucky
Forage News [2008-11], Department Of Plant And Soil Sciences, University Of Kentucky
Forage News
- KFGC Awards
- Clayton Geralds Wins KFGC Forage Spokesman Contest
- 29th Alfalfa Conference Program Set
- Forages at KCA
- 9th Grazing Conference Proceedings
- Decision Aid Added to Website
- Enough Hay…
- Animal Grazing Habits
- Time to Focus On Switchgrass Economics
- Limiting Access Time to Hay Can Stretch the Roll
- Horse Gastric Ulcer Syndrome Can Be Controlled With Diet
- Upcoming Events