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Grasslands As A Comparative For Farming Practices' Influence On Carbon/Nitrogen Dynamics, S A. Clancy, M E. Biondini, J C. Gardner Jun 2024

Grasslands As A Comparative For Farming Practices' Influence On Carbon/Nitrogen Dynamics, S A. Clancy, M E. Biondini, J C. Gardner

IGC Proceedings (1997-2023)

A remnant prairie was used for comparison of the soil as a natural resource among alternative and conventional farming systems. Beginning and ending biotic and abiotic characteristics were quantified directly. Carbon and N flow was calculated using CENTURY model. Carbon decay was not tied to the size of the soil organic matter pool (SOM), but to crop choice. Nitrogen decay was linked to the size of the SOM pool. Nitrogen fertilizer depressed the amount of N mineralized by soil biota. The alternative farming systems in North Dakota (no-till and green-manure fallow) more nearly mimic the ecosystem processes of the prairie …


And Food Justice For All: Advancing Access To Just And Sustainable Food Systems, Makenna Grace Landry May 2024

And Food Justice For All: Advancing Access To Just And Sustainable Food Systems, Makenna Grace Landry

Graduate Student Portfolios, Professional Papers, and Capstone Projects

A collection of work exploring food justice and food access programming in Western Montana, as well as a critique of the Bayer-Monsanto merger.


Biological Stimulants Increase Fertilizer Efficiency And Pasture Legume Content, P. R. Espie, S. Haswell, A. Barton Feb 2024

Biological Stimulants Increase Fertilizer Efficiency And Pasture Legume Content, P. R. Espie, S. Haswell, A. Barton

IGC Proceedings (1997-2023)

The effects of a soil biological stimulant (SS) and biologically activated reactive phosphate rock (BAP) on pasture yield and botanical composition were examined in a field trial in low-fertility New Zealand rangeland. BAP application significantly increased pasture yield by 60% and BAP plus biostimulant increased yield by 120%. BAP significantly increased resident legume cover by 75% and BAP with biostimulants by 85%. Alfalfa, direct drilled as an indicator test species, increased in establishment from 0 to 3.8 plants m-2 with BAP and to 4.2 plants m-2 with BAP plus biostimulant. Biostimulant applied alone increased yield by 17%, legume cover by …


Changes And Relationships Of Soil Aluminum, Organic Matter, And Hydrogen Ion Concentration With Rye Cover Crop, Arron Wilder Jan 2023

Changes And Relationships Of Soil Aluminum, Organic Matter, And Hydrogen Ion Concentration With Rye Cover Crop, Arron Wilder

Cal Poly Humboldt theses and projects

Soil acidity is a common agricultural problem worldwide, as approximately 50% of all potentially arable soils are affected by pH limitations. At soil pH 3+) is considered to be the chemical form of aluminum in acid soil that hinders plant growth the most. Potentially, soil organic matter (SOM) can ameliorate the toxic effects of Al3+ on plants and microbes by binding with Al3+, thus preventing Al3+ (and other species of aluminum) from interacting in the rhizosphere. Increasing SOM also increases soil health indicators (i.e., microbial activity, soil water holding capacity, aggregate stability, porosity, etc.) while the …


Abiotic Stress Mitigation: A Case Study From 21 Trials Using A Natural Organic Matter Based Biostimulant Across Multiple Geographies, Rachel L. Sleighter, Terry Hanson, David Holden, Kristen M. Richards Jan 2023

Abiotic Stress Mitigation: A Case Study From 21 Trials Using A Natural Organic Matter Based Biostimulant Across Multiple Geographies, Rachel L. Sleighter, Terry Hanson, David Holden, Kristen M. Richards

Chemistry & Biochemistry Faculty Publications

Crop productivity and yields can be greatly diminished by abiotic stress events including drought, extreme temperatures, excess moisture, and saline irrigation water. Multiple stressors occurring simultaneously can further exacerbate the strain on plants. Various types of biostimulants have been shown to mitigate abiotic stress and here, the results of 21 trials on corn, wheat, soybean, and various high-value crops are discussed in the context of the abiotic stress that either occurred naturally or was experimentally induced. Treatments in these trials included stressed and non-stressed plants, as well as either an untreated control or grower standard fertilizer applications alone and in …


Sustainability And Health Impacts Of Pulse Crops In The United States Using Life Cycle Assessment, Prathamesh A. Bandekar Dec 2022

Sustainability And Health Impacts Of Pulse Crops In The United States Using Life Cycle Assessment, Prathamesh A. Bandekar

Graduate Theses and Dissertations

Environmental sustainability and human health impact of pulses produced and consumed in the United States was assessed using life cycle assessment (LCA). The study included three objectives 1) to estimate environmental impact of current production and consumption practices in the United States using attributional LCA; 2) to estimate environmental and human health impact of iso-caloric diets containing varying amounts of pulses using Hybrid-LCA and Combined Nutritional and Environmental-LCA (CONE-LCA); and 3) to estimate environmental impact of increased demand for pulses using consequential LCA. Scope of the study varied for each objective with system boundary encompassing cradle-to-grave activities for objective 1 …


A Participatory Assessment Of Nitrified Urine Fertilizer Use In Swayimane, South Africa: Crop Production Potential, Farmer Attitudes And Smallholder Challenges, Benjamin C. Wilde, Eva Lieberherr, Engil Isadora Pujol Pereira, Alfred Odindo, Johan Siz Jun 2022

A Participatory Assessment Of Nitrified Urine Fertilizer Use In Swayimane, South Africa: Crop Production Potential, Farmer Attitudes And Smallholder Challenges, Benjamin C. Wilde, Eva Lieberherr, Engil Isadora Pujol Pereira, Alfred Odindo, Johan Siz

School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

Long-term nutrient mining of soil hampers agricultural production across Africa. However, emerging sanitation technologies afford a hygienically safe and ecologically sustainable solution to this development challenge by providing fertilizers derived from human excreta that could facilitate a socio-technical transition toward a more sustainable food system. To evaluate one such technology, nitrified urine fertilizer (NUF), we conducted participatory action research to assess the potential, from both a biophysical and social perspective, of NUF to serve as a soil fertilizer to support smallholder agricultural production in Swayimane, South Africa. To achieve this objective, we formed a stakeholder group comprised of a cooperative …


Results Of The 2022 Vermont Farmer Conservation & Payment For Ecosystem Services Survey. Vermont Payment For Ecosystem Services Technical Research Report #3a, Alissa C. White Jun 2022

Results Of The 2022 Vermont Farmer Conservation & Payment For Ecosystem Services Survey. Vermont Payment For Ecosystem Services Technical Research Report #3a, Alissa C. White

Reports and Policy Briefs

This survey was commissioned by the Vermont Soil Health and Payment for Ecosystem Services Working Group (VT PES Working Group) to gather farmer input on the development of payment for ecosystem services (PES) in Vermont for agriculture. In particular, the survey was intended to help set appropriate levels of compensation for participation in a soil health PES program, although additional information was gathered in the survey to inform the development of a new incentive program. The VT PES Working Group has explored the potential for a performance-based soil health PES program that would compensate farmers on the basis of environmental …


Sustainable Rural Development: Is It Possible To Boost Rural Economies While Protecting The Environment?, Jack M. Hempleman May 2022

Sustainable Rural Development: Is It Possible To Boost Rural Economies While Protecting The Environment?, Jack M. Hempleman

Undergraduate Theses, Capstones, and Recitals

Amidst rapid depletion of our carbon budget, the need to change our practices to be more in line with Earth’s limits has become important in every sector of our economy. From advances in renewable energy generation to the growth of urban gardening, people around the world are taking action to change the way they interact with our planet. However, growing concerns have been raised that protections for the environment will disproportionately harm struggling communities. For instance, rural communities in the United States already exhibit disproportionately high poverty rates, income inequality, and unemployment, as well as lower quality healthcare and public …


Permaculture As An Ecopedagogy Curriculum And Alternative Theory Of Development : An Exploration Of The Ecological Consciousness Of Rural Western Kenyan Farmers Using Photo-Voice With A Farmer Field School During Covid-19, David Yisrael Epstein May 2022

Permaculture As An Ecopedagogy Curriculum And Alternative Theory Of Development : An Exploration Of The Ecological Consciousness Of Rural Western Kenyan Farmers Using Photo-Voice With A Farmer Field School During Covid-19, David Yisrael Epstein

Legacy Theses & Dissertations (2009 - 2024)

This dissertation explores two main questions of farmers in Western Kenya – how they see farming as a creative process and their role in that – and how change is made possible in their community. I explore stories from farmers themselves, using photographs they have taken and stories they tell about those photographs, which answer these two questions. In doing so, I attempt to understand the degree to which collective action has taken root in a community exposed to a permaculture based curriculum within a farmer field school. It also importantly seeks to understand what happens when such a curriculum …


The New Shiny Penny? Regenerative Agriculture Beliefs And Practices Among Portland's Urban Agriculturalists, Melia Ann Chase Jan 2022

The New Shiny Penny? Regenerative Agriculture Beliefs And Practices Among Portland's Urban Agriculturalists, Melia Ann Chase

Dissertations and Theses

Regenerative agriculture (RA) is a set of farming and land management practices intended to support or enhance soil health and carbon sequestration potential of soils while producing food, fiber, or other agricultural products. It has received broad acclaim from scholars, corporations, and governmental bodies as a potential means of sequestering carbon and mitigating climate change impacts. It has also received critique and pushback for its vague definition, shifting metrics, and lack of acknowledgement of the Indigenous practices underlying the modern suite of regenerative practices. The purpose of this research is to investigate the beliefs Portland, Oregon urban agricultural practitioners hold …


Monitoring Agroecosystem Productivity And Phenology At A National Scale: A Metric Assessment Framework, Dawn M. Browning, Eric S. Russell, Guillermo E. Ponce-Campos, Nicole Kaplan, Andrew D. Richardson, Bijan Seyednasrollah, Sheri Spiegal, Nicanor Saliendra, Joseph G. Alfieri, John Baker, Carl Bernacchi, Brandon T. Bestelmeyer, David Bosch, Elizabeth H. Boughton, Raoul K. Boughton, Pat Clark, Gerald Flerchinger, Nuria Gomez-Casanovas, Sarah Goslee, Nick M. Haddad, David Hoover, Abdullah Jaradat, Marguerite Mauritz, Gregory W. Mccarty, Gretchen R. Miller, John Sadler, Amartya Saha, Russell L. Scott, Andrew Suyker, Craig Tweedie, Jeffrey D. Wood, Xukai Zhang, Shawn D. Taylor Nov 2021

Monitoring Agroecosystem Productivity And Phenology At A National Scale: A Metric Assessment Framework, Dawn M. Browning, Eric S. Russell, Guillermo E. Ponce-Campos, Nicole Kaplan, Andrew D. Richardson, Bijan Seyednasrollah, Sheri Spiegal, Nicanor Saliendra, Joseph G. Alfieri, John Baker, Carl Bernacchi, Brandon T. Bestelmeyer, David Bosch, Elizabeth H. Boughton, Raoul K. Boughton, Pat Clark, Gerald Flerchinger, Nuria Gomez-Casanovas, Sarah Goslee, Nick M. Haddad, David Hoover, Abdullah Jaradat, Marguerite Mauritz, Gregory W. Mccarty, Gretchen R. Miller, John Sadler, Amartya Saha, Russell L. Scott, Andrew Suyker, Craig Tweedie, Jeffrey D. Wood, Xukai Zhang, Shawn D. Taylor

School of Natural Resources: Faculty Publications

Effective measurement of seasonal variations in the timing and amount of production is critical to managing spatially heterogeneous agroecosystems in a changing climate. Although numerous technologies for such measurements are available, their relationships to one another at a continental extent are unknown. Using data collected from across the Long-Term Agroecosystem Research (LTAR) network and other networks, we investigated correlations among key metrics representing primary production, phenology, and carbon fluxes in croplands, grazing lands, and crop-grazing integrated systems across the continental U.S. Metrics we examined included gross primary productivity (GPP) estimated from eddy covariance (EC) towers and modelled from the Landsat …


Multifunctionality Of Sown Grassland Is Enhanced By Combining Four Complementary Species, M. Suter, O. Huguenin-Elie, Andreas Lüscher Oct 2021

Multifunctionality Of Sown Grassland Is Enhanced By Combining Four Complementary Species, M. Suter, O. Huguenin-Elie, Andreas Lüscher

IGC Proceedings (1997-2023)

We investigated species diversity effects and multifunctionality in an intensively managed grassland. A diversity experiment was set up with monocultures and mixtures comprising Lolium perenne, Dactylis glomerata, Trifolium pratense, and Trifolium repens, and was maintained for three years at 150 kg∙N∙ha-1∙ year-1. Ten functions were measured that represented i) forage production (aboveground biomass yield (μ), standard deviation of yield (σ), temporal stability (μ/σ), weed biomass), ii) N cycling (symbiotic-N2-fixation, N efficiency, NO3 in soil solution), and forage quality (crude protein content (CP), organic matter digestibility …


A Year In Syntropy: Exploring Syntropic Agriculture, Ajah Eills May 2021

A Year In Syntropy: Exploring Syntropic Agriculture, Ajah Eills

College Honors Program

Syntropic agriculture is a form of sustainable agriculture that originated in Brazil around 25 years ago. Although it has since spread throughout Brazil and Australia, there has yet to be a comprehensive study of the driving scientific principles behind syntropy. For my thesis, I conducted literature research and interviews with farmers, with the goal of describing the ecological principles on which syntropy is based, including its primary goal to improve soil health. Much of my thesis contrasted syntropic agriculture with conventional agriculture as practiced in the United States today, but I also explored the differences between syntropic agriculture and other …


Sustainable Agricultural And Rural Development In Semi‐Arid Environment When Supplementing Rainfall With 200 Mm Irrigation Water Per Year, Benzarti Jalila, Ben Youssef Salah Mar 2021

Sustainable Agricultural And Rural Development In Semi‐Arid Environment When Supplementing Rainfall With 200 Mm Irrigation Water Per Year, Benzarti Jalila, Ben Youssef Salah

IGC Proceedings (1997-2023)

No abstract provided.


Growing Specialty Coffee: Economic Security And Environmental Sustainability In Global Coffee Systems, Stephen Posner, Janica Anderzen, Alejandra Guzman Luna, Ernesto Mendez Apr 2020

Growing Specialty Coffee: Economic Security And Environmental Sustainability In Global Coffee Systems, Stephen Posner, Janica Anderzen, Alejandra Guzman Luna, Ernesto Mendez

Reports and Policy Briefs

The Gund Institute has partnered with the Agroecology & Livelihoods Collaborative to create a more sustainable and just global coffee sector. Gund Fellows used this research brief to leverage our networks and engage NGOs such as The Specialty Coffee Association, funders, and companies in early discussions about how to address systemic inequity across the coffee value chain.


Contribution Of Annual Legumes Pasture To The Cereal In Mediterranean Agriculture Systems, Carlos Ovalle, Soledad Espinoza, Alejandro Del Pozo, Viviana Barahona Feb 2020

Contribution Of Annual Legumes Pasture To The Cereal In Mediterranean Agriculture Systems, Carlos Ovalle, Soledad Espinoza, Alejandro Del Pozo, Viviana Barahona

IGC Proceedings (1997-2023)

The depletion of fossil fuels, the high demand of food for a constantly growing human population and, more recently, the strong expansion of biofuel crops, are causing sharp increases in the prices of fertilizers particularly nitrogen (N)(Crews and Peoples 2004; Jensen et al. 2011). Faced with this future scenario of high cost of N fertilizer, there is increasing interest in using legumes as N sources for sustainable agriculture and livestock. In the dryland (rainfed) cropping area of the Mediterranean climatic region of central Chile, bread wheat (Triticum aestivum) is predominantly grown in rotation with oats (Avena …


Intercropping For Water Conservation: Environmental And Economic Implications Of A Sustainable Farming Practice In California's Central Valley, Sophie Baker Jan 2020

Intercropping For Water Conservation: Environmental And Economic Implications Of A Sustainable Farming Practice In California's Central Valley, Sophie Baker

Scripps Senior Theses

California’s agricultural sector is the biggest water consumer in the state and faces intense pressure to reduce its overall water usage. Industrialized monoculture systems dominate the industry and often disregard long-term environmental and economic externalities for short-term profit maximization. To maintain longstanding food security and economic stability as well as protect the state’s water supply, it is critical that these systems transition to more sustainable and resilient production mechanisms. As an alternative to monoculture, intercropping affords greater potential to conserve water, protect soil quality, and increase crop yields, among other metrics of sustainability. However, there has been much controversy over …


Payment For Ecosystem Services: Incentives To Support Environmental Quality & Farming In Vermont, Stephen Posner, Taylor Ricketts, Eric Roy Oct 2019

Payment For Ecosystem Services: Incentives To Support Environmental Quality & Farming In Vermont, Stephen Posner, Taylor Ricketts, Eric Roy

Reports and Policy Briefs

Environmental quality is an ongoing concern in the Lake Champlain Basin. Vermont farmers are in a unique position to manage land in a way that maintains and improves environmental quality. A payment for ecosystem services (PES) program for Vermont would both support the economic vi- ability of Vermont farms and incentivize farmers to improve water quality and soil health. How- ever, conceptual and practical implementation challenges remain.


A Pedagogical Framework For The Design And Utilization Of Place-Based Experiential Learning Curriculum On A Campus Farm, Julia L. Angstmann, Amber J. Rollings, Grant A. Fore, Brandon H. Sorge Apr 2019

A Pedagogical Framework For The Design And Utilization Of Place-Based Experiential Learning Curriculum On A Campus Farm, Julia L. Angstmann, Amber J. Rollings, Grant A. Fore, Brandon H. Sorge

Scholarship and Professional Work - LAS

Campus agriculture projects are increasingly being recognized as spaces impactful to student engagement and learning through curricular and co-curricular programming; however, most campus farm activities are limited to agriculture or sustainability programs and/or co-curricular student clubs. Thus, campus farms are largely underutilized in the undergraduate curriculum, marking a need to explore the efficacy and impact of engaging a diverse array of disciplinary courses in the rich social, environmental, and civic context of local sustainable agriculture. The Farm Hub program presented here incentivizes instructors to refocus a portion of existing course content around the topic of local, sustainable agriculture, and reduces …


Pesticide Application Practices And Knowledge Among Small-Scale Local Rice Growers And Communities In Rwanda: A Cross-Sectional Study, Benjamin Ndayambaje, Hellen Amuguni, Jeanne Coffin-Schmitt, Nancy Sibo, Martin Ntawubizi, Elizabeth Vanwormer Jan 2019

Pesticide Application Practices And Knowledge Among Small-Scale Local Rice Growers And Communities In Rwanda: A Cross-Sectional Study, Benjamin Ndayambaje, Hellen Amuguni, Jeanne Coffin-Schmitt, Nancy Sibo, Martin Ntawubizi, Elizabeth Vanwormer

School of Natural Resources: Faculty Publications

Background: Agriculture contributes a third of Rwanda’s GDP and is the main source of income for rural households, with 80% of the total population involved in crop and/or livestock production. The Government of Rwanda established the Muvumba rice project in 2011 amidst a policy shift towards rice as a national staple crop. However, the indiscriminate use of pesticides by local, low-income rice growers has raised concerns about potential human, animal and ecosystem health impacts as pesticide distribution and application are not strictly regulated. Although pesticide use can directly influence farmer health and ecosystems, little is known about small-scale farmers’ pesticide …


Relationship Between Habitat And Barn Owl Prey Delivery Rate And Composition In A Napa Valley Vineyard Agroecosystem, Dane A. R. St. George Jan 2019

Relationship Between Habitat And Barn Owl Prey Delivery Rate And Composition In A Napa Valley Vineyard Agroecosystem, Dane A. R. St. George

Cal Poly Humboldt theses and projects

The provision of habitat for natural enemies of agricultural pests is common in integrated pest management approaches globally but has rarely been examined for vertebrate predators controlling vertebrate pests. To mitigate the economic and environmental costs of treating for rodent pests, winegrape producers in Napa Valley, California, have installed nest boxes to attract barn owls (Tyto alba) to their properties, but their effectiveness to control rodent pests in vineyards has not been thoroughly tested. A rigorous estimate of the number of rodents barn owls remove from the landscape is a necessary first step, and this study aimed to …


Reorganizing School Lunch For A More Just And Sustainable Food System In The Us, Jennifer Gaddis, Amy K. Coplen Jul 2018

Reorganizing School Lunch For A More Just And Sustainable Food System In The Us, Jennifer Gaddis, Amy K. Coplen

Urban Studies and Planning Faculty Publications and Presentations

Public school lunch programs in the United States are contested political terrains shaped by government agencies, civil society activists, and agri-food companies. The particular organization of these programs has consequences for public health, social justice, and ecological sustainability. This contribution draws on political economy, critical food studies, and feminist economics to analyze the US National School Lunch Program, one of the world's oldest and largest government-sponsored school lunch programs. It makes visible the social and environmental costs of the "heat-and-serve" economy, where widely used metrics consider only the speed and volume of service as productive work. This study demonstrates that …


The Fungus Among Us: The Effect Of Copper Fungicide On Arbuscular Mycorrhizal Fungi And Implications For Sustainable Agricultural Systems, Francois J. Hartnett Jan 2018

The Fungus Among Us: The Effect Of Copper Fungicide On Arbuscular Mycorrhizal Fungi And Implications For Sustainable Agricultural Systems, Francois J. Hartnett

Senior Projects Spring 2018

Senior Project submitted to The Division of Social Studies of Bard College.


A Multi-Criteria And Dynamic Sustainability Assessment Of Crop Rotation Alternatives, Saturnina Fabian Nisperos Jan 2018

A Multi-Criteria And Dynamic Sustainability Assessment Of Crop Rotation Alternatives, Saturnina Fabian Nisperos

Computational Modeling & Simulation Engineering Theses & Dissertations

With the food security challenge faced by nations globally, agriculture sustainability has been a significant consideration for concerned agencies. Sustainability assessments are significant tools in providing support to stakeholders in their crop production planning. Agricultural sustainability assessment, however, is complex and it involves numerous criteria that can be conflicting. Limitations on crop rotation sustainability assessment methods include: non-dynamic assessment; lack of regard to cover crops and to the individual crop production preferences of farmers; and focused only on single-year and single-crop rotation. We sought to address these limitations by developing a multi-criteria and dynamic sustainability assessment model that considers the …


Managing Herbicide Resistance: Listening To The Perspectives Of The Practitioners, Jill Schroeder, David Shaw, Michael Barrett, Harold Coble, Amy Asmus, Raymond Jussaume, David E. Ervin Dec 2017

Managing Herbicide Resistance: Listening To The Perspectives Of The Practitioners, Jill Schroeder, David Shaw, Michael Barrett, Harold Coble, Amy Asmus, Raymond Jussaume, David E. Ervin

Economics Faculty Publications and Presentations

No abstract provided.


Community Supported Agriculture At Indian Creek Nature Center's Sugar Grove Farm: Sustainable Farming For Iowa, Erin Anzalone May 2017

Community Supported Agriculture At Indian Creek Nature Center's Sugar Grove Farm: Sustainable Farming For Iowa, Erin Anzalone

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Agriculture is the largest revenue source for the state of Iowa and the state’s two priority crops are corn and soybeans. Farming practices that emphasize monoculture production of these crops can reduce biological diversity and habitat for all-important pollinators, and exacerbate runoff and erosion that sends nutrient-rich soil, herbicides, and pesticides into streams and rivers. The industrial agriculture model is lucrative now, but unsustainable for Iowa over the long run. Sugar Grove Farm, a subset of Indian Creek Nature Center (ICNC), plans to grow a variety of food crops on a large-scale, economically sustainable farm, and support low-income households in …


Policies For Reintegrating Crop And Livestock Systems: A Comparative Analysis, Rachael D. Garrett, Meredith Niles, Juliana Gil, Philip Dy, Julio Reis, Judson Valentim Mar 2017

Policies For Reintegrating Crop And Livestock Systems: A Comparative Analysis, Rachael D. Garrett, Meredith Niles, Juliana Gil, Philip Dy, Julio Reis, Judson Valentim

College of Agriculture and Life Sciences Faculty Publications

The reintegration of crop and livestock systems within the same land area has the potential to improve soil quality and reduce water and air pollution, while maintaining high yields and reducing risk. In this study, we characterize the degree to which federal policies in three major global food production regions that span a range of socioeconomic contexts, Brazil, New Zealand, and the United States, incentivize or disincentivize the use of integrated crop and livestock practices (ICLS). Our analysis indicates that Brazil and New Zealand have the most favorable policy environment for ICLS, while the United States provides the least favorable …


A Study Of Short-Season Winter Cover Crops For Organic High Tunnel Production Systems, Luke Riley Freeman Dec 2016

A Study Of Short-Season Winter Cover Crops For Organic High Tunnel Production Systems, Luke Riley Freeman

Graduate Theses and Dissertations

This two-year study investigated short-season winter cover crops to improve soil quality and growth of subsequent vegetable crops in an organic high tunnel production system. Five winter cover crop treatments including a nontreated control, Austrian winter peas (Pisum arvense), bell beans (Vicia faba), mustard (Brassica juncea cv. Kodiak), and Daikon radish (Raphanus sativus var. longipinnatus) were grown in a high tunnel in a randomized complete block design from mid-November to mid-March, mowed and incorporated into the soil, and followed by a succession of vegetable crops including tomato (Lycopersicon lycopersicum, cv. ‘Plum Dandy’) and broccoli (Brassica oleracea var. italica, cv. ‘Bay …


Transdisciplinary Weed Research: New Leverage On Challenging Weed Problems?, N. Jordan, M. Schut, S. Grahan, J. N. Barney, D. Z. Childs, S. Christensen, R. D. Cousens, A. S. Davis, H. Eizenberg, David E. Ervin, C. Fernández-Quintanilla, L. J. Harrison, M. A. Harsch, S. Heijting, M. Liebman, D. Loddo, S. B. Mirsky, M. Riemens, P. Neve, D. A. Peltzer, M. Renton, M. Williams, J. Recasens, M. Sønderskov Jul 2016

Transdisciplinary Weed Research: New Leverage On Challenging Weed Problems?, N. Jordan, M. Schut, S. Grahan, J. N. Barney, D. Z. Childs, S. Christensen, R. D. Cousens, A. S. Davis, H. Eizenberg, David E. Ervin, C. Fernández-Quintanilla, L. J. Harrison, M. A. Harsch, S. Heijting, M. Liebman, D. Loddo, S. B. Mirsky, M. Riemens, P. Neve, D. A. Peltzer, M. Renton, M. Williams, J. Recasens, M. Sønderskov

Institute for Sustainable Solutions Publications and Presentations

Transdisciplinary weed research (TWR) is a promising path to more effective management of challenging weed problems. We define TWR as an integrated process of inquiry and action that addresses complex weed problems in the context of broader efforts to improve economic, environmental and social aspects of ecosystem sustainability. TWR seeks to integrate scholarly and practical knowledge across many stakeholder groups (e.g. scientists, private sector, farmers and extension officers) and levels (e.g. local, regional and landscape). Furthermore, TWR features democratic and iterative processes of decision-making and collective action that aims to align the interests, viewpoints and agendas of a wide range …