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Articles 1 - 30 of 428
Full-Text Articles in Entire DC Network
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, Time Period: October 1 — December 31, 2009, Margaret N. Rees
Fire Science
• Article accepted for publication in Journal of Arid Environments.
• Recharged irrigation gel packs for outplanting and watered seed plots at Goodsprings site.
• Completed full year of seed granivory trials at Goodsprings site.
• Presented information on this Task Agreement to 4th International Fire Ecology and Management Congress.
• Maintained nursery plots and added installment of nitrogen treatment.
Mir319a Targeting Of Tcp4 Is Critical For Petal Growth And Development In Arabidopsis, Anwesha Nag, Stacey King, Thomas Jack
Mir319a Targeting Of Tcp4 Is Critical For Petal Growth And Development In Arabidopsis, Anwesha Nag, Stacey King, Thomas Jack
Dartmouth Scholarship
In a genetic screen in a drnl-2 background, we isolated a loss-of-function allele in miR319a (miR319a129). Previously, miR319a has been postulated to play a role in leaf development based on the dramatic curled-leaf phenotype of plants that ectopically express miR319a (jaw-D). miR319a129 mutants exhibit defects in petal and stamen development; petals are narrow and short, and stamens exhibit defects in anther development. The miR319a129 loss-of-function allele contains a single-base change in the middle of the encoded miRNA, which reduces the ability of miR319a to recognize targets. Analysis of the expression patterns of the …
A Unique Role For The Host Escrt Proteins In Replication Of Tomato Bushy Stunt Virus, Daniel Barajas, Yi Jiang, Peter D. Nagy
A Unique Role For The Host Escrt Proteins In Replication Of Tomato Bushy Stunt Virus, Daniel Barajas, Yi Jiang, Peter D. Nagy
Plant Pathology Faculty Publications
Plus-stranded RNA viruses replicate in infected cells by assembling viral replicase complexes consisting of viral- and host-coded proteins. Previous genome-wide screens with Tomato bushy stunt tombusvirus (TBSV) in a yeast model host revealed the involvement of seven ESCRT (endosomal sorting complexes required for transport) proteins in viral replication. In this paper, we show that the expression of dominant negative Vps23p, Vps24p, Snf7p, and Vps4p ESCRT factors inhibited virus replication in the plant host, suggesting that tombusviruses co-opt selected ESCRT proteins for the assembly of the viral replicase complex. We also show that TBSV p33 replication protein interacts with Vps23p ESCRT-I …
Northeast Research Station Watertown, South Dakota Annual Progress Report, 2009, Agricultural Experiment Station, Plant Science Department
Northeast Research Station Watertown, South Dakota Annual Progress Report, 2009, Agricultural Experiment Station, Plant Science Department
Agricultural Experiment Station and Research Farm Annual Reports
This is the 2009 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.
Porter, Eugene A., 1841-1922 (Mss 294), Manuscripts & Folklife Archives
Porter, Eugene A., 1841-1922 (Mss 294), Manuscripts & Folklife Archives
MSS Finding Aids
Finding aid only for Manuscripts Collection 294. Two letter press books containing outgoing letters from the firm, E. A. Porter & Bros. of Bowling Green, Kentucky. These letters deal almost exclusively with the manufacture and marketing of a piece of agricultural equipment called the "corn cob crusher." A small amount of correspondence also documents Mr. Porter's personal agricultural pursuits.
Remote Sensing To Detect The Movement Of Wheat Curl Mites Through The Spatial Spread Of Virus Symptoms, And Identification Of Thrips As Predators Of Wheat Curl Mites, Abby R. Stilwell
Department of Entomology: Dissertations, Theses, and Student Research
The wheat curl mite (WCM), Aceria tosichella Keifer, transmits three viruses to winter wheat: wheat streak mosaic virus, High Plains virus, and Triticum mosaic virus. This virus complex causes yellowing of the foliage and stunting of plants. WCMs disperse by wind, and an increased understanding of mite movement and subsequent virus spread is necessary in determining the risk of serious virus infections in winter wheat. These risk parameters will help growers make better decisions regarding WCM management. The objectives of this study were to evaluate the capabilities of remote sensing to identify virus infected plants and to establish the potential …
Education In Plant Pathology Present Status And Future Challenges, James Macdonald, Caitilyn Allen, David Gadoury, William Jacobi, Segenet Kelemu, James Moyer, Tim Murray, Kevin Ong, Charles Pearson, John Sherwood, Ann Vidaver
Education In Plant Pathology Present Status And Future Challenges, James Macdonald, Caitilyn Allen, David Gadoury, William Jacobi, Segenet Kelemu, James Moyer, Tim Murray, Kevin Ong, Charles Pearson, John Sherwood, Ann Vidaver
Department of Plant Pathology: Faculty Publications
Plant pathology is largely a mission driven discipline that seeks to increase the fundamental understanding of host–pathogen interactions and the etiology of plant diseases for the purpose of preventing or mitigating crop loss. This is an important mission because all nations face serious challenges in their efforts to prevent disease on plants cultivated for food, fiber, ornamental use, timber, and fuel, as well as those growing in native ecosystems. In 1994, it was estimated that global losses due to plant diseases ranged from 9.7 to 14.2% of potential yield (12).
Observations Of Badgers Preying On Black-Tailed Prairie Dogs, Daniel S. Licht
Observations Of Badgers Preying On Black-Tailed Prairie Dogs, Daniel S. Licht
The Prairie Naturalist
American badgers (Taxidea taxus) often visit black-tailed prairie dog (Cynomys ludovicianus) colonies, most likely in search of prey (Lomolino and Smith 2004, Shaughnessy and Cifelli 2004). Badgers are well suited to hunting fossorial prey such as prairie dogs by excavating burrows and capturing individuals belowground (Lindzey 2003). However, the ecological literature is sparse regarding details of how badgers hunt and capture prairie dogs underground. Eads and Biggins (2008) documented three occurrences of a badger excavating prairie dogs. That badger (apparently the same individual) had a den within the prairie dog town where captures occurred. This note …
Mortality Of Cranes (Gruidae) Associated With Powerlines Over A Major Roost On The Platte River, Nebraska, Gregory D. Wright, Timothy J. Smith, Robert K. Murphy, Jeffery T. Runge, Robert R. Harms
Mortality Of Cranes (Gruidae) Associated With Powerlines Over A Major Roost On The Platte River, Nebraska, Gregory D. Wright, Timothy J. Smith, Robert K. Murphy, Jeffery T. Runge, Robert R. Harms
The Prairie Naturalist
Two 69-kilovolt powerlines spanning the Platte River in south central Nebraska are suspected to cause substantial mortality to sandhill cranes (Grus canadensis) and pose a threat to endangered whooping cranes (G. americana) that roost overnight on the river during spring and fall migrations. Most studies of crane collisions with powerlines in the region have focused on counts of carcasses away from night roosts on the river and none have accounted for potential biases in detecting carcasses. We found 61 carcasses of sandhill cranes below over-river segments of the two powerlines during 4 March to 7 April …
Long Distance Molt Migration By A Giant Canada Goose From Eastern South Dakota, Bobby J. Anderson, Charles D. Dieter
Long Distance Molt Migration By A Giant Canada Goose From Eastern South Dakota, Bobby J. Anderson, Charles D. Dieter
The Prairie Naturalist
To reduce crop damage by resident giant Canada geese (Schaible et al. 2005), the South Dakota Department of Game, Fish and Parks (SDGFP) initiated a program to reduce goose nesting success in eastern South Dakota. One management tool used by SDGFP personnel was the destruction of giant Canada goose nests. When a giant Canada goose has its nest destroyed, they are known to initiate a molt migration (Mykut 2002, Luukkonen et aI. 2008). We attached Platform Transmitting Terminals (PTT; model ST -19) to document and describe molt migrations of giant Canada geese following nest destruction. We captured 3 adult nesting …
Noteworthy Winter Prey Of Short-Eared Owls In Southern Texas: A Case Study, Damon Williford, Marc C. Woodin, Mary Kay Skoruppa
Noteworthy Winter Prey Of Short-Eared Owls In Southern Texas: A Case Study, Damon Williford, Marc C. Woodin, Mary Kay Skoruppa
The Prairie Naturalist
The winter range of North American short-eared owls (Asio flammeus) encompasses much of the United States, including southern Texas, where it is a common winter resident (Oberholser 1974, Rappole and Blacklock 1985). Winter food habits of short-eared owls are relatively weJl documented, but the majority of investigations have been conducted in eastern Canada and northeastern U.S. (Clark 1975, Holt 1993); midwestern U.S. (Colvin and Spaulding 1983); and British Columbia and Pacific northwestern U.S. (Bogiatto et al. 2001). The short-eared owl has a narrow trophic niche, generally preying on small mammals, with voles (Microtus spp.) and deer mice …
Patterns Of Bison Hair Use In Nests Of Tallgrass Prairie Birds, Bryan R. Coppedge
Patterns Of Bison Hair Use In Nests Of Tallgrass Prairie Birds, Bryan R. Coppedge
The Prairie Naturalist
I examined patterns of bison (Bison bison L.) hair use by passerine birds nesting in the Tallgrass Prairie Preserve, Osage County, Oklahoma, 2002-2004. I collected and dissected 103 nests of 15 species into their constituent components. Nests were predominately composed of herbaceous material such as grass stems and leaves. Woody material and mud were rarely used. Bison hair was the most prominent zoological material used in nests, with lesser amounts and occurrence of arthropod silk, snake skin, feathers, jack rabbit (Lepus californicus Oray) fur, and man-made materials such as cellophane and string. At least one nest of 13 …
Monitoring Meadows With A Modified Robel Pole In The Northern Black Hills, South Dakota, Daniel W, Uresk, Daryl E. Mergen, Ted A. Benzon
Monitoring Meadows With A Modified Robel Pole In The Northern Black Hills, South Dakota, Daniel W, Uresk, Daryl E. Mergen, Ted A. Benzon
The Prairie Naturalist
We used a modified Robel pole to measure vegetation for a study conducted in the northern Black Hills, South Dakota. Objectives were to determine the relationship between visual obstruction readings and clipped standing herbage, and develop guidelines for monitoring standing herbage. The relationship between visual obstruction readings and standing herbage was linear and regression coefficients were significant (P≤ 0.001). Herbage ranged from 140 to 3313 kg· ha-1 with a mean of 1386 kg· ha-1 (SE = 320 kg· ha-1) for 123 transects. Visual obstruction readings (VOR) ranged from 0.6 to 30.4 (number of 1.27 cm bands …
Sp639-2010-2009 Grain Sorghum Hybrid Tests In Tennessee, The University Of Tennessee Agricultural Extension Service
Sp639-2010-2009 Grain Sorghum Hybrid Tests In Tennessee, The University Of Tennessee Agricultural Extension Service
Field & Commercial Crops
No abstract provided.
Sp618-2010-2009 Corn Hybrid & Sweet Sorghum Silage Tests In Tennessee, The University Of Tennessee Agricultural Extension Service
Sp618-2010-2009 Corn Hybrid & Sweet Sorghum Silage Tests In Tennessee, The University Of Tennessee Agricultural Extension Service
Field & Commercial Crops
No abstract provided.
Pb1768 2010 Insect Control Recommendations For Field Crops –, The University Of Tennessee Agricultural Extension Service
Pb1768 2010 Insect Control Recommendations For Field Crops –, The University Of Tennessee Agricultural Extension Service
Field & Commercial Crops
An Integrated Pest Management (IPM) program integrates control tactics including cultural practices, variety selection, biological control and insecticides to manage insect pest populations so that economic damage and harmful environmental side effects are minimized. Insecticides should only be used on an as-needed basis; therefore, insect scouting must be conducted regularly throughout the season to determine if an insecticide application is warranted.
Pb1580 2010 Weed Control Manual For Tennessee, The University Of Tennessee Agricultural Extension Service
Pb1580 2010 Weed Control Manual For Tennessee, The University Of Tennessee Agricultural Extension Service
Field & Commercial Crops
This manual contains the 2010 University of Tennessee weed control recommendations for corn, grain sorghum, cotton, soybeans, burley and dark tobacco, wheat, forage crops, sunflowers and farm ponds. These recommendations are based on results of research and demonstrations conducted by the Agricultural Experiment Station and the Agricultural Extension Service. Decisions regarding recommendations are made by the University of Tennessee Weed Control Committee and are based on available data at various locations in the state.
This publication contains pesticide recommendations that are subject to change at any time. The recommendations in this publication are provided only as a guide. It is …
Arkansas Corn And Grain Sorghum Performance Tests 2009, D. G. Dombeck, R. D. Bond, I. L. Eldridge, R. M. Pryor
Arkansas Corn And Grain Sorghum Performance Tests 2009, D. G. Dombeck, 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.
Economic Contribution Of The Agricultural Sector To The Arkansas Economy In 2007 And Revised Estimates For 2006, Nathan Kemper, Jennie Popp, Wayne Miller
Economic Contribution Of The Agricultural Sector To The Arkansas Economy In 2007 And Revised Estimates For 2006, Nathan Kemper, Jennie Popp, Wayne Miller
Research Reports and Research Bulletins
This report is the fourth in a series of reports examining agriculture’s economic contribution on the Arkansas economy. Utilizing data from the United States Bureau of Economic Analysis, USDA Economics Research Service, USDA National Agricultural Statistics Service, and Minnesota IMPLAN Group, Inc., the economic contribution of agriculture on the Arkansas economy was estimated for the most recent year available, 2007. Gross Domestic Product (GDP) by State information for Arkansas was compared with those of other states in the southeast U.S. to give a measure of the relative importance of agriculture in Arkansas. The total economic contribution of agriculture (direct, indirect, …
Forage News [2009-12], Department Of Plant And Soil Sciences, University Of Kentucky
Forage News [2009-12], Department Of Plant And Soil Sciences, University Of Kentucky
Forage News
- Grazing Conference Photos
- Growing Alfalfa in the South
- Heart of America Grazing Conference
- Role and Importance of Clovers in Kentucky
- Advantage of Rotational Grazing Confirmed Using Time Lapse Photography
- Corn Stalk Quality After Weathering
- Kentucky Land Values Buck the Trend
- Results of the 1st Year for a Grazing Evaluation of KYFA9302 Tall Fescue, With and Without the AR584 Novel Endophyte
- Cutting Ash Content
- KFGC Update
- Upcoming Events
Vitisnet: ‘‘Omics’’ Integration Through Grapevine Molecular Networks, Jerome Grimplet, Grant R. Cramer, Julie A. Dickerson, Kathy Mathiason, John Van Hemert, Anne Y. Fennell Dr
Vitisnet: ‘‘Omics’’ Integration Through Grapevine Molecular Networks, Jerome Grimplet, Grant R. Cramer, Julie A. Dickerson, Kathy Mathiason, John Van Hemert, Anne Y. Fennell Dr
Agronomy, Horticulture and Plant Science Faculty Publications
Background: Genomic data release for the grapevine has increased exponentially in the last five years. The Vitis vinifera genome has been sequenced and Vitis EST, transcriptomic, proteomic, and metabolomic tools and data sets continue to be developed. The next critical challenge is to provide biological meaning to this tremendous amount of data by annotating genes and integrating them within their biological context. We have developed and validated a system of Grapevine Molecular Networks (VitisNet). Methodology/Principal Findings: The sequences from the Vitis vinifera (cv. Pinot Noir PN40024) genome sequencing project and ESTs from the Vitis genus have been paired and the …
Vitisnet: ‘‘Omics’’ Integration Through Grapevine Molecular Networks, Jerome Grimplet, Grant R. Cramer, Julie A. Dickerson, Kathy Mathiason, John Van Hemert, Anne Y. Fennell
Vitisnet: ‘‘Omics’’ Integration Through Grapevine Molecular Networks, Jerome Grimplet, Grant R. Cramer, Julie A. Dickerson, Kathy Mathiason, John Van Hemert, Anne Y. Fennell
Agronomy, Horticulture and Plant Science Faculty Publications
Background: Genomic data release for the grapevine has increased exponentially in the last five years. The Vitis vinifera genome has been sequenced and Vitis EST, transcriptomic, proteomic, and metabolomic tools and data sets continue to be developed. The next critical challenge is to provide biological meaning to this tremendous amount of data by annotating genes and integrating them within their biological context. We have developed and validated a system of Grapevine Molecular Networks (VitisNet).
Methodology/Principal Findings: The sequences from the Vitis vinifera (cv. Pinot Noir PN40024) genome sequencing project and ESTs from the Vitis genus have been paired and the …
Temperature Compensation Of Auxin Dependent Developmental Patterning, Nicholas J. Kaplinsky
Temperature Compensation Of Auxin Dependent Developmental Patterning, Nicholas J. Kaplinsky
Biology Faculty Works
The establishment of localized auxin gradients plays a central role in developmental patterning in plants. Auxin levels and responses have been shown to increase with temperature although developmental patterning is not affected. This suggests the existence of a homeostatic mechanism that ensures that patterning occurs normally over a range of temperatures. We recently described the cloning and characterization of BOBBER1 (BOB1), an Arabidopsis gene which encodes a small heat shock protein. BOB1 is required for the establishment of auxin gradients and for normal developmental patterning. BOB1 is also required for organismal thermotolerance and localizes to heat shock granules at elevated …
Bed Site Selection Of Fawn Pronghorn In Custer State Park, South Dakota, Chad P. Lehman, Jamin D. Hartland, Barbara J. Keller, Joshua J. Millspaugh, Gary C. Brundige
Bed Site Selection Of Fawn Pronghorn In Custer State Park, South Dakota, Chad P. Lehman, Jamin D. Hartland, Barbara J. Keller, Joshua J. Millspaugh, Gary C. Brundige
The Prairie Naturalist
We evaluated pronghorn (Antilocapra americana) fawn bedding site characteristics on a prairie and ponderosa pine (Pinus ponderosa) landscape interface in Custer State Park, South Dakota. We radio-marked 16 adult female pronghorn and collected bed site information from their fawns during 2007~2008. We compared bed site selection with random sites (n = 74) during 2 periods; the early hiding phase when fawns were 1 ~28 days of age (n = 23 bed sites) and the later group phase when fawns were 29~60 days of age (n = 52 bed sites). During the hiding phase fawns selected dry …
A Partial Inventory Of Islands In North Dakota: Potential For Breeding Waterfowl Management, Michael L. Szymanski
A Partial Inventory Of Islands In North Dakota: Potential For Breeding Waterfowl Management, Michael L. Szymanski
The Prairie Naturalist
Islands can provide secure nesting habitat for ducks and other waterbirds, especially in agriculturally dominated landscapes. I inventoried natural and man-made islands in the portion of North Dakota covered by the Prairie Pothole Joint Venture (PPJV). I mapped 1,305 islands in this area; up to 46% of which could provide enhanced nest success with management (e.g., predator removal or establishment of brushy cover). Management of islands for breeding ducks may be an important method for achieving desired reproductive rates in the PP JV as substantial areas of perennial grass cover are lost from federal conservation programs, primarily the Conservation Reserve …
Heirloom And Hybrid Tomato Yield And Quality In Organic And Conventional Production Systems, Diana J. Edlin
Heirloom And Hybrid Tomato Yield And Quality In Organic And Conventional Production Systems, Diana J. Edlin
Masters Theses & Specialist Projects
Due to the recent changes in the economy of Kentucky tobacco production, some producers are seeking an alternative crop that will provide similar economic gains to tobacco without needing more acreage. Tomatoes are an existing crop in Kentucky that have been declining in acreage over the last five years. There is evidence to suggest that, through niche and local marketing, tomatoes may be able to fill the void left by tobacco. However, there is concern among producers that they will lose yield and/or quality if they switch to one of these niche production systems or cultivars.
A two year study …
Water Uptake Threshold Of Rabbiteye (Vaccinium Ashei) Blueberries And Its Influence On Fruit Splitting, Donna A. Marshall-Shaw, James M. Spiers, Kenneth J. Curry
Water Uptake Threshold Of Rabbiteye (Vaccinium Ashei) Blueberries And Its Influence On Fruit Splitting, Donna A. Marshall-Shaw, James M. Spiers, Kenneth J. Curry
Faculty Publications
Split-resistant and split-susceptible rabbiteye blueberry fruit were evaluated at all stages of development to determine ''water uptake thresholds'' by soaking in distilled water. Weight increase after soaking was measured, and percent weight gain was calculated to take into consideration the weight increase of the fruit from development. The ratio of percent increase in volume to weight increase resulting from water uptake was calculated. Ratios of percent water uptake to weight increase between splitsusceptible 'Tifblue' and split-resistant 'Premier' blueberries were found to be similar. The split-susceptible 'Tifblue' had a 1.6 g/50 fruit increase with a 1.7% water uptake and a ratio …
Detection And Measurement Of Water Stress In Vegetation Using Visible Spectrum Reflectance, Arthur Zygielbaum
Detection And Measurement Of Water Stress In Vegetation Using Visible Spectrum Reflectance, Arthur Zygielbaum
Department of Geography: Dissertations, Theses, and Student Research
At any scale, from a single microbe to the planet that nurtures us, water defines our place in the universe. It provides the hydraulic forces needed to give plants structure, and the medium enabling photosynthesis, the basis for most life on Earth, to occur. Knowledge of plant water status is vital to understanding the state or condition of vegetation, information which is essential to disciplines as diverse as agriculture, geography, and climatology. Non-destructive and remote sensing of plant water status allows the gathering of such information across wide geographic extents and over long periods of time. Monitoring vegetation remotely requires …
In Planta "Green Engineering" Of Variable Sizes And Exotic Shapes Of Gold Nanoparticles: An Integrative Eco-Friendly Approach, Daniel Lee Starnes
In Planta "Green Engineering" Of Variable Sizes And Exotic Shapes Of Gold Nanoparticles: An Integrative Eco-Friendly Approach, Daniel Lee Starnes
Masters Theses & Specialist Projects
Manipulating matter at the nanoscale creates materials endowed with unique optoelectronic and physicochemical attributes. Among the noble metals, the properties of gold in "nano" can be manipulated by varying, their shapes and sizes. Gold nanoparticles find several applications in electronics, medicine and environmental reclamation. Emphasis has been on the “green synthesis” of nanogold to mitigate the hazardous implications stemmed from conventional nanogold synthesis. However, it is not known if the in planta synthesis of nanogold particles could be “green engineered” as well for generating desirable sizes and exotic shapes. In the present study, we used inductively coupled plasma (ICP) analysis …
Characterization Of Genes Encoding Poly(A) Polymerases In Plants: Evidence For Duplication And Functional Specialization, Lisa R. Meeks, Bala Subrahmanyam Addepalli, Arthur G. Hunt
Characterization Of Genes Encoding Poly(A) Polymerases In Plants: Evidence For Duplication And Functional Specialization, Lisa R. Meeks, Bala Subrahmanyam Addepalli, Arthur G. Hunt
Plant and Soil Sciences Faculty Publications
Background: Poly(A) polymerase is a key enzyme in the machinery that mediates mRNA 3′ end formation in eukaryotes. In plants, poly(A) polymerases are encoded by modest gene families. To better understand this multiplicity of genes, poly(A) polymerase-encoding genes from several other plants, as well as from Selaginella, Physcomitrella, and Chlamydomonas, were studied.
Methodology/Principal Findings: Using bioinformatics tools, poly(A) polymerase-encoding genes were identified in the genomes of eight species in the plant lineage. Whereas Chlamydomonas reinhardtii was found to possess a single poly(A) polymerase gene, other species possessed between two and six possible poly(A) polymerase genes. With the exception …