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Full-Text Articles in Life Sciences

Technical Feasibility Of Small-Scale Oilseed And On-Farm Biodiesel Production: A Vermont Case Study, Emily J. Stebbins-Wheelock, Robert Parsons, Qingbin Wang, Heather Darby, Vernon Grubinger Dec 2012

Technical Feasibility Of Small-Scale Oilseed And On-Farm Biodiesel Production: A Vermont Case Study, Emily J. Stebbins-Wheelock, Robert Parsons, Qingbin Wang, Heather Darby, Vernon Grubinger

College of Agriculture and Life Sciences Faculty Publications

This article investigates the technical feasibility of small-scale oilseed production and on-farm processing of biodiesel and livestock feed using primary data from two Vermont farms. Results indicate that small-scale production of sunflowers, canola, and soybeans, and on-farm processing of livestock feed and biodiesel are technically feasible, but yields depend on many factors. Increased local expertise, information-sharing among the farm and Extension communities, and improved access to harvesting and processing equipment can improve productivity and efficiency. Additional experience in seed drying and expeller pressing techniques should reduce fat content in the seed meal, improve meal value, and improve oil production efficiency. …


Genetic Patterns Of Domestication In Pigeonpea (Cajanus Cajan (L.) Millsp.) And Wild Cajanus Relatives, Mulualem T. Kassa, R. Varma Penmetsa, Noelia Carrasquilla-Garcia, Birinchi K. Sarma, Subhojit Datta, Hari D. Upadhyaya, Rajeev K. Varshney, Eric J.B. Von Wettberg, Douglas R. Cook Jun 2012

Genetic Patterns Of Domestication In Pigeonpea (Cajanus Cajan (L.) Millsp.) And Wild Cajanus Relatives, Mulualem T. Kassa, R. Varma Penmetsa, Noelia Carrasquilla-Garcia, Birinchi K. Sarma, Subhojit Datta, Hari D. Upadhyaya, Rajeev K. Varshney, Eric J.B. Von Wettberg, Douglas R. Cook

College of Agriculture and Life Sciences Faculty Publications

Pigeonpea (Cajanus cajan) is an annual or short-lived perennial food legume of acute regional importance, providing significant protein to the human diet in less developed regions of Asia and Africa. Due to its narrow genetic base, pigeonpea improvement is increasingly reliant on introgression of valuable traits from wild forms, a practice that would benefit from knowledge of its domestication history and relationships to wild species. Here we use 752 single nucleotide polymorphisms (SNPs) derived from 670 low copy orthologous genes to clarify the evolutionary history of pigeonpea (79 accessions) and its wild relatives (31 accessions). We identified three well-supported lineages …


Agricultural Mitigation And Adaptation To Climate Change In Yolo County, Ca, Louise Jackson, Van R. Haden, Allan Hollander, Hyunok Lee, Mark Lubell, Vishal Mehta, Toby O'Geen, Meredith T. Niles, Josh Perlman, David Purkey, William Salas, Daniel Sumner, M Tomuta, M Dempsey, Stephen Wheeler Jan 2012

Agricultural Mitigation And Adaptation To Climate Change In Yolo County, Ca, Louise Jackson, Van R. Haden, Allan Hollander, Hyunok Lee, Mark Lubell, Vishal Mehta, Toby O'Geen, Meredith T. Niles, Josh Perlman, David Purkey, William Salas, Daniel Sumner, M Tomuta, M Dempsey, Stephen Wheeler

College of Agriculture and Life Sciences Faculty Publications

This place‐based case study in an agricultural county in California’s Central Valley focused on the period of 2010–2050, and dealt with biophysical and socioeconomic issues related to both mitigation of greenhouse gas (GHG) emissions and to adaptation to an uncertain climate. In the past 100 years, changes in crop acreage has been more related to crop price and availability of irrigation water than to growing degree days during summer, and in fact, summer temperatures have increased less than winter temperatures. Econometric analysis indicated that warmer winters, as projected by Geophysical Fluid Dynamics Laboratory‐Bias Corrected Constructed Analog during 2035–2050, could result …


Eorganic: The Organic Agriculture Community Of Practice For Extension, Alexandra G. Stone, Danielle D. Treadwell, Alice K. Formiga, John P.G. Mcqueen, Michelle M. Wander, James Riddle, Heather M. Darby, Debra Heleba Jan 2012

Eorganic: The Organic Agriculture Community Of Practice For Extension, Alexandra G. Stone, Danielle D. Treadwell, Alice K. Formiga, John P.G. Mcqueen, Michelle M. Wander, James Riddle, Heather M. Darby, Debra Heleba

College of Agriculture and Life Sciences Faculty Publications

eOrganic is the organic agriculture community of practice (CoP) and resource area for eXtension. eOrganic's primary community of interest (CoI) is organic farmers and the agricultural professionals who support them. The 250 members of the eOrganic CoP include farmers, researchers, certifiers, and extension/other agricultural professionals. eOrganic's mission is to build a diverse national CoP and use web technologies to synthesize existing information, emerging science, and practical knowledge into information resources and training materials for its CoI. eOrganic strategies to achieve that mission include collaborative publication, stakeholder engagement, community development, projectmanagement, evaluation, and fundraising. eOrganic's public site currently offers 240 articles, …


Global And Local Concerns: What Attitudes And Beliefs Motivate Farmers To Mitigate And Adapt To Climate Change?, Van R. Haden, Meredith T. Niles, Mark Lubell, Josh Perlman, Louise Jackson Jan 2012

Global And Local Concerns: What Attitudes And Beliefs Motivate Farmers To Mitigate And Adapt To Climate Change?, Van R. Haden, Meredith T. Niles, Mark Lubell, Josh Perlman, Louise Jackson

College of Agriculture and Life Sciences Faculty Publications

In response to agriculture's vulnerability and contribution to climate change, many governments are developing initiatives that promote the adoption of mitigation and adaptation practices among farmers. Since most climate policies affecting agriculture rely on voluntary efforts by individual farmers, success requires a sound understanding of the factors that motivate farmers to change practices. Recent evidence suggests that past experience with the effects of climate change and the psychological distance associated with people's concern for global and local impacts can influence environmental behavior. Here we surveyed farmers in a representative rural county in California's Central Valley to examine how their intention …


Costs Of Food Safety Certification On Fresh Produce Farms In Vermont, Florence A. Becot, Virginia Nickerson, David S. Conner, Jane M. Kolodinsky Jan 2012

Costs Of Food Safety Certification On Fresh Produce Farms In Vermont, Florence A. Becot, Virginia Nickerson, David S. Conner, Jane M. Kolodinsky

College of Agriculture and Life Sciences Faculty Publications

This article addresses the economic costs of good agricultural practices (GAPs) audits of small and medium size farms in Vermont. It focuses on the costs of infrastructure, equipment, and labor required to successfully pass a U.S. Department of Agriculture (USDA) GAPs audit. In-depth interviews and surveys of produce farmers in 2011 revealed that the cost of GAPs certification ranges between $37 and $54 per acre, and an additional 7 hours were required each week during the growing season. Based on this exploratory research, certifying all the farms in Vermont would cost between $228,216 and $3,019,114. Our study explored all the …