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Articles 1 - 30 of 74
Full-Text Articles in Life Sciences
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.
Lucerne Guidelines For Western Australia Principles For Integrating A Perennial Pasture Into Broadacre Dryland Farming Systems, Diana Fedorenko, Perry Dolling, Christopher Loo, Tom Bailey, Roy Latta
Lucerne Guidelines For Western Australia Principles For Integrating A Perennial Pasture Into Broadacre Dryland Farming Systems, Diana Fedorenko, Perry Dolling, Christopher Loo, Tom Bailey, Roy Latta
Bulletins 4000 -
Lucerne, often regarded as the queen of forages, has been used in agriculture for centuries. In Western Australia, however, its potential has never been fully realised despite its well-documented ability to dewater soils and reduce groundwater recharge. Over the years adoption has been limited by a range of factors including pests and diseases, soil acidity, grazing management and economics. During the last decade research has addressed these issues, paving the way for much greater impact at the farm and catchment level.
No-Till Tomato Production, Bradley L. Booker
No-Till Tomato Production, Bradley L. Booker
Master's Theses
Tillage increases erosion rates and diminishes the quality of soils but has traditionally been a way to manage weeds and prepare a seedbed. No-till vegetable production can ameliorate the ill-effects of tillage in an economically effective way but has not been studied much in California. The objective of this thesis was to determine the viability of no-till vegetable cropping on the Central Coast of California. Tomatoes were grown in no-till and conventionally tilled treatments. Total yield, fruit weight, weed emergence, soil bulk density, soil aggregate stability, and soil organic carbon content were measured and compared. Yields and soil tests in …
Little Bluestem In The Landscape, Heidi Kratsch, Graham Hunter
Little Bluestem In The Landscape, Heidi Kratsch, Graham Hunter
CWEL Extension Fact Sheets
No abstract provided.
Las Frambuesas De Otoño En Los Túneles Altos, Daniel Rowley, Brent Black, Trevin Cardon
Las Frambuesas De Otoño En Los Túneles Altos, Daniel Rowley, Brent Black, Trevin Cardon
All Current Publications
Se ha demostrado que los túneles altos son una manera eficaz para extender la temporada de crecimiento de la frambuesa en Utah y otras áreas de los Estados Unidos. Dependiendo del clima, los rendimientos de las frambuesas de otoño cultivados al aire libre pueden ser reducidos significativamente por la primera helada del otoño. Los túneles altos son una de las maneras de protección de la helada, y cuando se los usan junto con otras maneras de protección de la helada se puede extender significativamente la temporada de crecimiento. Investigadores en Nueva York han extendido eficazmente la temporada de crecimiento hasta …
Horticulture, Department Of Agricultural Economics, University Of Kentucky
Horticulture, Department Of Agricultural Economics, University Of Kentucky
Agricultural Economics Presentations
No abstract provided.
Summaries Of Arkansas Cotton Research 2008, Derrick M. Oosterhuis
Summaries Of Arkansas Cotton Research 2008, Derrick M. Oosterhuis
Arkansas Agricultural Experiment Station Research Series
No abstract provided.
Fall Planting, Larry A. Sagers
Impact Of Weed Management Practices On Grapevine Growth, Yield Components, Plant And Arthropod Abundance, And Carabid Seed Predation In Paso Robles Vineyard, Paolo Sanguankeo
Impact Of Weed Management Practices On Grapevine Growth, Yield Components, Plant And Arthropod Abundance, And Carabid Seed Predation In Paso Robles Vineyard, Paolo Sanguankeo
Master's Theses
In the Central Coast of California, USA, wine grape growers are making efforts to identify weed control practices that promote biodiversity in their vineyards while maintaining yields. A field study was conducted in Paso Robles, CA in 2006 and 2007 evaluating the effect on Zinfandel grape-vine growth and production, groundcover plant, and ground dwelling arthropod communities of five weed control practices: 1) flumioxazin, 2) simazine, 3) cultivation, 4) cover crop, and 5) untreated control.
The herbicide treatments had the lowest weed biomass followed by the cultivation, being approximately 10 and 2 times lower than the weed biomass of either the …
Arkansas Small-Grain Cultivar Performance Tests 2008-2009, J. T. Kelly, T. S. Rainey, R. K. Bacon, E. A. Milus
Arkansas Small-Grain Cultivar Performance Tests 2008-2009, J. T. Kelly, T. S. Rainey, R. K. Bacon, E. A. Milus
Arkansas Agricultural Experiment Station Research Series
Small-grain cultivar performance tests are conducted each year in Arkansas by the Arkansas Agricultural Experiment Station, Department of Crop, Soil, and Environmental Sciences. The tests provide information to companies developing cultivars and/or marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating cultivar recommendations for smallgrain producers.
Nitrogen And Phosphorus Remediation Of Aquatic Garden Plants In Laboratory-Scale Constructed Wetlands., Robert Polomski
Nitrogen And Phosphorus Remediation Of Aquatic Garden Plants In Laboratory-Scale Constructed Wetlands., Robert Polomski
All Dissertations
This research investigated the potential of growing marketable aquatic garden plants that also remediate nursery and greenhouse runoff in a subsurface-flow constructed wetland. The cost of wastewater treatment is offset by the production of revenue-generating horticultural crops. Aquatic garden plants that offer the dual benefits of nutrient remediation and aesthetic value may also be planted in bioretention basins, rain gardens, buffer zones, and filter strips.
Fifteen commercially available aquatic garden plants were grown for 8 weeks in a laboratory scale subsurface wetland in a greenhouse and received nitrogen (N) and phosphorus (P) from Hoagland's nutrient solution every two days for …
Sfa Gardens Newsletter, Summer 2009, Sfa Gardens, Stephen F. Austin State University
Sfa Gardens Newsletter, Summer 2009, Sfa Gardens, Stephen F. Austin State University
SFA Gardens Newsletters
No abstract provided.
B. R. Wells Rice Research Studies 2008, R. J. Norman, J. F. Meullenet, K. A. K. Moldenhauer
B. R. Wells Rice Research Studies 2008, R. J. Norman, J. F. Meullenet, K. A. K. Moldenhauer
Arkansas Agricultural Experiment Station Research Series
No abstract provided.
Pasture Condition Guide For The Ord River Catchment, K Ryan, E Tierney, P Novelly
Pasture Condition Guide For The Ord River Catchment, K Ryan, E Tierney, P Novelly
Bulletins 4000 -
This guide has been produced as a tool for assessing pasture condition over a range of pasture types in the Ord River catchment. A pasture type is a distinctive mix of plant species, soil type and landscape position. For example, the Mitchell Grass Alluvial Plain Pasture type is a mixture of Mitchell grasses and other species occurring on black soil alluvial plains.
Pasture condition is an important factor affecting the potential of the rangelands for animal production and is a useful indicator for the sustainability of production.
Evaluation Of Herbicide Efficacy As Influenced By Adjuvant And Nozzle Type, Catherine L. (Grissom) Ansolabehere
Evaluation Of Herbicide Efficacy As Influenced By Adjuvant And Nozzle Type, Catherine L. (Grissom) Ansolabehere
Master's Theses
White clover (Trifolium repens) is a common and difficult weed to control in turfgrass as it is a highly visible and unsightly weed that disrupts the uniformity of the turfgrass surface. This weed is a serious problem in the turfgrass industry in California and there is a need for better methods of control. With more regulations on pesticides and less information about efficient application techniques, controlling white clover with available herbicides can be difficult.
Compatibility trials were conducted during the summer of 2005 to determine the compatibility of the herbicides and adjuvants planned for use in subsequent greenhouse and field …
Overseeded Bermudagrass Spring Trasition Response To Mowing Height, Nitrogen Rate, Sulfonylurea Herbicide, And Allelopathy, Raymond Mccauley
Overseeded Bermudagrass Spring Trasition Response To Mowing Height, Nitrogen Rate, Sulfonylurea Herbicide, And Allelopathy, Raymond Mccauley
All Theses
Hybrid bermudagrass [Cynodon transvaalensis Burtt-Davey x C. dactylon (L.)
Pers.] is the preferred turf for golf courses and athletic fields across the southern United
States because of its dark green color, fine texture, good wear and drought tolerance, and
excellent recuperative rate. Despite its many attributes, bermudagrass goes dormant and
turns an unsightly brown color when soil temperatures fall below 10-13oC (50-55super>oF).
Perennial ryegrass (Lolium perenne L.) is often overseeded into bermudagrass in the fall
to sustain acceptable turf quality through the spring months. However, perennial ryegrass
aggressively competes with the bermudagrass for resources in the spring and potentially …
Root-Zone Characteristics And Bermudagrass Response To Saline Water Delivered By Subsurface Drip Irrigation, Kelsey Gorman
Root-Zone Characteristics And Bermudagrass Response To Saline Water Delivered By Subsurface Drip Irrigation, Kelsey Gorman
All Theses
Population growth and recurring drought conditions have placed high demands on freshwater resources in South Carolina. Thus, turfgrass irrigation management practices that reduce freshwater use while maintaining quality turfgrass need to be identified.
Previous research in the arid Southwest USA documents water conservation on bermudagrass by using saline water sources and subsurface drip irrigation (SDI) systems. A field-scale facility was constructed in Florence, SC, to evaluate `Tifway' bermudagrass
(Cynodon dactylon (L.) Pers. X C. transvaalensis Burtt Davy) quality, growth, and rootzone characteristics when subjected to saline (3.15 dS m-1) or freshwater (0.07 dS m-1) irrigation, SDI lines spaced 41 or …
Arkansas Turfgrass Report 2008, Michael Richardson, Douglas Karcher, Aaron Patton
Arkansas Turfgrass Report 2008, Michael Richardson, Douglas Karcher, Aaron Patton
Arkansas Agricultural Experiment Station Research Series
No abstract provided.
Novel Lepidopteran Sex Pheromone Components From Marmara Gulosa (Lepidoptera: Gracillariidae), J. Stephen Mcelfresh, Jardel A. Moreira, Elizabeth E. Grafton-Cardwell, David H. Headrick, John M. Heraty, Marta Guillen, Jocelyn G. Millar
Novel Lepidopteran Sex Pheromone Components From Marmara Gulosa (Lepidoptera: Gracillariidae), J. Stephen Mcelfresh, Jardel A. Moreira, Elizabeth E. Grafton-Cardwell, David H. Headrick, John M. Heraty, Marta Guillen, Jocelyn G. Millar
Horticulture and Crop Science
Marmara gulosa Guillén & Davis (Lepidoptera: Gracillariidae) is a sporadic pest of citrus and a number of other crops in southern and central California. Coupled gas chromatographic-electroantennogram detection analyses of headspace volatiles collected by solid phase microextraction from virgin female moths revealed at least four related compounds in the extracts that elicited significant antennal responses from antennae of male moths. These compounds were identified as (8E,10E)-tetradecadien-1-ol, and the corresponding aldehyde, acetate, and formate ester, representing the first report of a formate as a lepidopteran pheromone component. The four compounds were consistently found in headspace volatiles collected …
Impacts Of Plant Size, Density, Herbivory, And Desease On Native Platte Thistle (Cirsium Canescens), Deidra Jacobsen
Impacts Of Plant Size, Density, Herbivory, And Desease On Native Platte Thistle (Cirsium Canescens), Deidra Jacobsen
Department of Environmental Studies: Undergraduate Student Theses
Abstract. Based on prior field observations, we hypothesized that individual and interacting effects of plant size, density, insect herbivory, and especially fungal disease, influenced seedling and juvenile plant growth in native Platte thistle populations (Cirsium canescens Nutt.). We worked at Arapaho Prairie in the Nebraska Sandhills (May - August 2007), monitoring plant growth, insect damage, and fungal infection within different density thistle patches. In the main experiment, we sprayed half of test plants in different density patches with fungicide (Fungonil© Bonide, containing chlorothalonil) and half with a water control. Fungal infection rates were very low, so we found no difference …
Evaluating Hazelnut Cultivars For Yield, Quality And Disease Resistance, Sam Tobin
Evaluating Hazelnut Cultivars For Yield, Quality And Disease Resistance, Sam Tobin
Department of Environmental Studies: Undergraduate Student Theses
ABSTRACT This long term study focuses on testing various hazelnut cultivars for yield, nut quality and disease resistance. There are various cultivars that are being tested for these desired traits but only the Grand Traverse and Skinner will be applicable for the results of this localized study. The desired traits of commercial nut production are best matched by these two cultivars. Results from previous harvests will be used to draw trends to recommend commercially functional cultivars in Eastern Nebraska.
Mapping Of Photoperiod-Induced Growth Cessation In The Wild Grape Vitis Riparia, Amanda Garris, Lindsay Clark, Chris Owens, Steven Mckay, James Luby, Kathy Mathiason, Anne Fennell
Mapping Of Photoperiod-Induced Growth Cessation In The Wild Grape Vitis Riparia, Amanda Garris, Lindsay Clark, Chris Owens, Steven Mckay, James Luby, Kathy Mathiason, Anne Fennell
Agronomy, Horticulture and Plant Science Faculty Publications
In grapevines (Vitis spp.), the timing of growth cessation in the fall is an important aspect of adaptation and a key objective in breeding new grape cultivars suitable for continental climates. Growth cessation is a complex biological process that is initiated by environmental cues such as daylength and temperature, as well as water and nutrient availability. The genetic control of growth cessation in grapevines was studied by mapping quantitative trait loci (QTL) in a hybrid grape population. An F2 mapping population was developed by selfing a single F1 plant derived from a cross between an accession of the North American …
Evolution Of Genome Size And Complexity In Pinus., Alison M. Morse, Daniel G. Peterson, M. Nurul Islam-Faridi, Katherine E. Smith, Zenaida V. Magbanua, Saul A. Garcia, Thomas L. Kubisiak, Henry V. Amerson, John E. Carlson, C. Dana Nelson, John M. Davis
Evolution Of Genome Size And Complexity In Pinus., Alison M. Morse, Daniel G. Peterson, M. Nurul Islam-Faridi, Katherine E. Smith, Zenaida V. Magbanua, Saul A. Garcia, Thomas L. Kubisiak, Henry V. Amerson, John E. Carlson, C. Dana Nelson, John M. Davis
College of Agriculture & Life Sciences Publications and Scholarship
BACKGROUND: Genome evolution in the gymnosperm lineage of seed plants has given rise to many of the most complex and largest plant genomes, however the elements involved are poorly understood. METHODOLOGY/PRINCIPAL FINDINGS: Gymny is a previously undescribed retrotransposon family in Pinus that is related to Athila elements in Arabidopsis. Gymny elements are dispersed throughout the modern Pinus genome and occupy a physical space at least the size of the Arabidopsis thaliana genome. In contrast to previously described retroelements in Pinus, the Gymny family was amplified or introduced after the divergence of pine and spruce (Picea). If retrotransposon expansions are responsible …
W215-Organic Certification In Tennessee, The University Of Tennessee Agricultural Extension Service
W215-Organic Certification In Tennessee, The University Of Tennessee Agricultural Extension Service
Commercial Horticulture
Organic certification promotes trust between producers and consumers. Certification provides consumers assurance that a product has originated from an agricultural system using organic production methods. For producers, organic certification provides access to price premiums and specialty markets.
Arkansas Cotton Variety Test 2008, Fred M. Bourland, A. B. Beach, J. M. Hornbeck, A. J. Hood
Arkansas Cotton Variety Test 2008, Fred M. Bourland, A. B. Beach, J. M. Hornbeck, A. J. Hood
Arkansas Agricultural Experiment Station Research Series
The primary goal of the Arkansas Cotton Variety Test is to provide unbiased data regarding the agronomic performance of cotton varieties and advanced breeding lines in the major cotton-growing areas of Arkansas. This information helps seed companies establish marketing strategies and assists producers in choosing varieties to plant.
Temperature Influence And Heat Management Requirements Of Microalgae Cultivation In Photobioreactors, Thomas Hagen Mehlitz
Temperature Influence And Heat Management Requirements Of Microalgae Cultivation In Photobioreactors, Thomas Hagen Mehlitz
Master's Theses
Microalgae are considered one of the most promising feedstocks for biofuel production for the future. The most efficient way to produce vast amounts of algal biomass is the use of closed tubular photobioreactors (PBR). The heat requirement for a given system is a major concern since the best algae growth rates are obtained between 25-30 °C, depending on the specific strain. A procedure to determine temperature influence on algal growth rates was developed for a lab-scale PBR system using the species Chlorella. A maximum growth rate of 1.44 doublings per day at 29 °C (optimal temperature) was determined. In addition, …
A Photovoice Participatory Evaluation Of A School Gardening Program Through The Eyes Of Fifth Graders, Catherine Sands, Krista Harper, Lee Ellen Reed, Maggie Shar
A Photovoice Participatory Evaluation Of A School Gardening Program Through The Eyes Of Fifth Graders, Catherine Sands, Krista Harper, Lee Ellen Reed, Maggie Shar
Anthropology Department Faculty Publication Series
In the springtime, fifth grade students at the Williamsburg Elementary School in rural Western Massachusetts ask to snack on sorrel and chives from the school garden, between planting potatoes and building a shade structure for their outdoor classroom. They are members of the first cohort of the curriculum-integrated program initiated by Fertile Ground, a grassroots organization in western Massachusetts. The children’s delight in the fresh greens they have grown marks a national phenomenon: the farm-to-school movement. With limited resources, parents, teachers, students, administrators, and community activists are developing inroads to better school food and food education, by constructing school teaching …
Research Update Meeting 2009 - Research Programs At The Cranberry Station, Carolyn J. Demoranville
Research Update Meeting 2009 - Research Programs At The Cranberry Station, Carolyn J. Demoranville
Cranberry Station Extension meetings
No abstract provided.
Research Update Meeting 2009 - Frost Tolerance, Carolyn J. Demoranville
Research Update Meeting 2009 - Frost Tolerance, Carolyn J. Demoranville
Cranberry Station Extension meetings
No abstract provided.
Research Update Meeting 2009 - Managing Dodder In 2009, Hilary A. Sandler
Research Update Meeting 2009 - Managing Dodder In 2009, Hilary A. Sandler
Cranberry Station Extension meetings
No abstract provided.