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Articles 61 - 87 of 87
Full-Text Articles in Physical Sciences and Mathematics
Nitrogen Fertilizer Suppresses Mineralization Of Soil Organic Matter In Maize Agroecosystems, Navreet K. Mahal, William R. Osterholz, Fernando E. Miguez, Hanna J. Poffenbarger, John E. Sawyer, Daniel C. Olk, Sotirios V. Archontoulis, Michael J. Castellano
Nitrogen Fertilizer Suppresses Mineralization Of Soil Organic Matter In Maize Agroecosystems, Navreet K. Mahal, William R. Osterholz, Fernando E. Miguez, Hanna J. Poffenbarger, John E. Sawyer, Daniel C. Olk, Sotirios V. Archontoulis, Michael J. Castellano
Plant and Soil Sciences Faculty Publications
The possibility that N fertilizer increases soil organic matter (SOM) mineralization and, as a result, reduces SOM stocks has led to a great debate about the long-term sustainability of maize-based agroecosystems as well as the best method to estimate fertilizer N use efficiency (FNUE). Much of this debate is because synthetic N fertilizer can positively or negatively affect SOM mineralization via several direct and indirect pathways. Here, we test a series of hypotheses to determine the direction, magnitude, and mechanism of N fertilizer effect on SOM mineralization and discuss the implications for methods to estimate FNUE. We measured the effect …
Weather And Climate Summary And Forecast: March 2019 Report, Gregory V. Jones
Weather And Climate Summary And Forecast: March 2019 Report, Gregory V. Jones
Linfield University Wine Studies Reports
This report provides a summary of the weather and climate forecast for March 2019. It includes forecast information specific to the Pacific Northwest and the western United States, as well as forecast information for other portions of the United States and abroad.
Flowering Resources Distract Pollinators From Crops: Model Predictions From Landscape Simulations, Charlie C. Nicholson, Taylor H. Ricketts, Insu Koh, Henrik G. Smith, Eric V. Lonsdorf, Ola Olsson
Flowering Resources Distract Pollinators From Crops: Model Predictions From Landscape Simulations, Charlie C. Nicholson, Taylor H. Ricketts, Insu Koh, Henrik G. Smith, Eric V. Lonsdorf, Ola Olsson
Rubenstein School of Environment and Natural Resources Faculty Publications
Enhancing floral resources is a widely accepted strategy for supporting wild bees and promoting crop pollination. Planning effective enhancements can be informed with pollination service models, but these models should capture the behavioural and spatial dynamics of service-providing organisms. Model predictions, and hence management recommendations, are likely to be sensitive to these dynamics. We used two established models of pollinator foraging to investigate whether habitat enhancement improves crop visitation; whether this effect is influenced by pollinator foraging distance and landscape pattern; and whether behavioural detail improves model predictions. The more detailed central place foraging model better predicted variation in bee …
Food And Earth Systems: Priorities For Climate Change Adaptation And Mitigation For Agriculture And Food Systems, Ana Maria Loboguerrero, Bruce M. Campbell, Peter J.M. Cooper, James W. Hansen, Todd Rosenstock, Eva Wollenberg
Food And Earth Systems: Priorities For Climate Change Adaptation And Mitigation For Agriculture And Food Systems, Ana Maria Loboguerrero, Bruce M. Campbell, Peter J.M. Cooper, James W. Hansen, Todd Rosenstock, Eva Wollenberg
Rubenstein School of Environment and Natural Resources Faculty Publications
Human activities and their relation with land, through agriculture and forestry, are significantly impacting Earth system functioning. Specifically, agriculture has increasingly become a key sector for adaptation and mitigation initiatives that address climate change and help ensure food security for a growing global population. Climate change and agricultural outcomes influence our ability to reach targets for at least seven of the 17 Sustainable Development Goals. By 2015, 103 nations had committed themselves to reduce greenhouse gas emissions from agriculture, while 102 countries had prioritized agriculture in their adaptation agenda. Adaptation and mitigation actions within agriculture still receive insufficient support across …
A New Direction For Salinity Management In Western Australia: A Consultative Review, Ghd
A New Direction For Salinity Management In Western Australia: A Consultative Review, Ghd
Natural resources commissioned reports
In May 2018, the Office of the Auditor General (OAG) published an audit into the management of salinity and recommended that the Department of Primary Industries and Regional Development (DPIRD), in consultation with the Department of Biodiversity, Conservation and Attractions (DBCA) and the Department of Water and Environmental Regulation (DWER), set a strategic direction for salinity management for WA and improve monitoring, cooperation, coordination, promotion of soil conservation, and compliance of salinity impacts and its management.
The OAG’s audit focused on two questions:
- Do agencies know the extent and impact of dryland salinity in the South West agricultural regions?
- Are …
A Theoretical Model Of Underground Dipole Antennas For Communications In Internet Of Underground Things, Abdul Salam, Mehmet C. Vuran, Xin Dong, Christos Argyropoulos, Suat Irmak
A Theoretical Model Of Underground Dipole Antennas For Communications In Internet Of Underground Things, Abdul Salam, Mehmet C. Vuran, Xin Dong, Christos Argyropoulos, Suat Irmak
Faculty Publications
The realization of Internet of Underground Things (IOUT) relies on the establishment of reliable communication links, where the antenna becomes a major design component due to the significant impacts of soil. In this paper, a theoretical model is developed to capture the impacts of change of soil moisture on the return loss, resonant frequency, and bandwidth of a buried dipole antenna. Experiments are conducted in silty clay loam, sandy, and silt loam soil, to characterize the effects of soil, in an indoor testbed and field testbeds. It is shown that at subsurface burial depths (0.1-0.4m), change in soil moisture impacts …
Potential Economic Impacts Of Allocating More Land For Bioenergy Biomass Production In Virginia, Thomas O. Ochuodho, Janaki Alavalapati, Pankaj Lal, Domena A. Agyeman, Bernabas Wolde, Pralhad Burli
Potential Economic Impacts Of Allocating More Land For Bioenergy Biomass Production In Virginia, Thomas O. Ochuodho, Janaki Alavalapati, Pankaj Lal, Domena A. Agyeman, Bernabas Wolde, Pralhad Burli
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
The growing attention to renewable energy and rural development has created greater demand for production of biomass feedstock for bioenergy. However, forest growth rates and the amount of land in most existing forests may not be sufficient to sustainably supply the forest biomass required to support existing forest products industries and the expanding bioenergy industry. Additionally, concerns about agricultural land use competition have dampened expansion of biomass production on agricultural land base. One of the ways to meet the growing forest biomass feedstock demand for bioenergy production is by allocating currently marginal non-forested land for growing bioenergy feedstocks. In Virginia, …
Weather And Climate Summary And Forecast: February 2019 Report, Gregory V. Jones
Weather And Climate Summary And Forecast: February 2019 Report, Gregory V. Jones
Linfield University Wine Studies Reports
This report provides a summary of the weather and climate forecast for February 2019. It includes forecast information specific to the Pacific Northwest and the western United States, as well as forecast information for other portions of the United States and abroad.
Now I See: Photovisualization To Support Agricultural Climate Adaptation, Rachel E. Schattman, Stephanie Hurley, Martha Caswell
Now I See: Photovisualization To Support Agricultural Climate Adaptation, Rachel E. Schattman, Stephanie Hurley, Martha Caswell
College of Agriculture and Life Sciences Faculty Publications
Published with license by Taylor & Francis Group, LLC. To remain viable, agricultural producers will need to adapt to changing climatic conditions in coming decades. Agricultural advisers play an important role in helping producers decide to adopt appropriate adaptation practices. Photovisualizations have the potential to complement currently utilized outreach and education strategies. This research uses a focus group approach to explore (1) whether photovisualizations can aid in decision-making about climate change adaptation, and (2) what characteristics of photovisualizations are most effective at conveying spatial aspects of adaptation practices. We found that photovisualizations generate rich discussions about ecological and economic effects …
Investigations Of The Potential For Irrigated Agriculture On The Bonaparte Plains: Bore Completion Report, 2nd Edition, D L. Bennett
Investigations Of The Potential For Irrigated Agriculture On The Bonaparte Plains: Bore Completion Report, 2nd Edition, D L. Bennett
Resource management technical reports
Drilling programs were undertaken in 2013 and 2016 by the former Department of Agriculture and Food, Western Australia and in 2017 by DPIRD, at 10 sites in the Bonaparte Plains area, north of Kununurra in the East Kimberley region of Western Australia (WA).
These drilling programs were a component of resource availability and risk investigations conducted to determine the potential for developing irrigated agriculture on 30 000 hectares of Cockatoo Sands — free-draining loamy soils that have the potential to support crops in the wet and dry seasons. There was limited hydrogeological information available at a suitable scale for the …
Investigations Of The Potential For Irrigated Agriculture On The Bonaparte Plains: Land Capability Assessment Report, Henry Smolinski
Investigations Of The Potential For Irrigated Agriculture On The Bonaparte Plains: Land Capability Assessment Report, Henry Smolinski
Resource management technical reports
This report describes 55 000 hectares of predominantly red sands and sandy loams — locally referred to as Cockatoo Sands — on the Bonaparte Plains about 70 kilometres north of the Ord River Irrigation Area, Kununurra. It builds on soil surveys conducted in 2009 and 2015, which identified significant areas of red soils in the Kununurra area that could be suitable for agriculture.
The Cockatoo Sands generally have loamy, sand topsoils that grade to sandy loam with depth. The soil profiles are very deep, well drained to rapidly drained, and highly permeable. These soil characteristics support a large range of …
Pindan Soils In The La Grange Area, West Kimberley: Land Capability Assessment For Irrigated Agriculture, 2nd Edition, Henry Smolinski, Paul Galloway, Justin Laycock
Pindan Soils In The La Grange Area, West Kimberley: Land Capability Assessment For Irrigated Agriculture, 2nd Edition, Henry Smolinski, Paul Galloway, Justin Laycock
Resource management technical reports
This report identifies areas of Pindan country along the Great Northern Highway, south of Broome from Roebuck to Mandora, which have high potential for irrigated agriculture. The area contains significant reserves of potable groundwater defined by the La Grange groundwater allocation area, which is based on the surficial Broome Sandstone aquifer.
Over the past 30 years, several small- to medium-scale irrigation developments have been successfully established in the region. The water opportunities project aims to identify and quantify the land and water resources of the region to ensure any future expansion of irrigated agriculture is sustainable and will not have …
Does Household Capital Mediate The Uptake Of Agricultural Land, Crop, And Livestock Adaptations? Evidence From The Indo-Gangetic Plains (India), Sameer H. Shah, Courtney Hammond Wagner, Udita Sanga, Hogeun Park, Lia Helena Monteiro De Lima Demange, Carolina Gueiros, Meredith T. Niles
Does Household Capital Mediate The Uptake Of Agricultural Land, Crop, And Livestock Adaptations? Evidence From The Indo-Gangetic Plains (India), Sameer H. Shah, Courtney Hammond Wagner, Udita Sanga, Hogeun Park, Lia Helena Monteiro De Lima Demange, Carolina Gueiros, Meredith T. Niles
College of Agriculture and Life Sciences Faculty Publications
Farmers in the Indo-Gangetic Plains produce much of the wheat and rice grown in India. However, food production and millions of farm-based livelihoods in this region will continue to be adversely affected by hydro-climatic change and variation, reduced land productivity, and declining groundwater levels. Thus, agricultural adaptations are essential for protecting and improving upon intersecting goals of food security, poverty alleviation, and wellbeing. Household “capital” (e.g., natural, human, financial, physical, and social) is commonly cited as an indicator of livelihood adaptability and innovation. We develop a series of mediated structural equation models to empirically evaluate the validity of capital as …
Understanding Greenhouse Gases, Julie M. Mueller, Laura Edwards, Madhav P. Nepal, Larry B. Browning, Matthew L. Miller, P. Troy White
Understanding Greenhouse Gases, Julie M. Mueller, Laura Edwards, Madhav P. Nepal, Larry B. Browning, Matthew L. Miller, P. Troy White
iLEARN Teaching Resources
Students will conduct hands-on experiments to see how greenhouse gases interact with the Earth’s atmosphere and how greenhouse gases affect temperature. This lesson introduces National Geographic’s Geo-Inquiry Process, where students will identify a Geo-inquiry question, collect data, and create a project around the answer to their question. Students will then present their findings to their peers and evaluate their Geo-Inquiry process.
Residues Of Thiamethoxam And Mefenoxam In Vegetative And Floral Tissue Of Soybean At The Early Reproductive Stage Resulting From Seed Treatments, Carolina Camargo, Daniel D. Snow, Sathaporn Onanong, Thomas Hunt, Blair Siegfried
Residues Of Thiamethoxam And Mefenoxam In Vegetative And Floral Tissue Of Soybean At The Early Reproductive Stage Resulting From Seed Treatments, Carolina Camargo, Daniel D. Snow, Sathaporn Onanong, Thomas Hunt, Blair Siegfried
Department of Entomology: Faculty Publications
Thiamethoxam with mefenoxam is the most widely used neonicotinoid insecticide/fungicide mixture applied to soybean (Glycine max [L]) as seed treatments. Based on the systemic nature of thiamethoxam and mefenoxam, residues of this insecticide/fungicide mixture may be present in soybean vegetative and floral tissue and negatively impact beneficial insects. Although neonicotinoids are often applied in combination with systemic fungicides, the research on ecological risks of neonicotinoids has been focused on the analysis of these compounds without considering their interaction with other agrochemicals. The objective of this study was to identify the concentration of thiamethoxam and mefenoxam in soybean flowers and …
Using A Case Study Approach To Teach Invasive Species And Climate Change, Amanda Hoover, Bradley Blaha, Jacob Englin, Madhav P. Nepal, Larry B. Browning, Matt L. Miller, P. Troy White
Using A Case Study Approach To Teach Invasive Species And Climate Change, Amanda Hoover, Bradley Blaha, Jacob Englin, Madhav P. Nepal, Larry B. Browning, Matt L. Miller, P. Troy White
iLEARN Teaching Resources
In this teaching module, students will explore emerald ash borer (EAB), its impacts on the ash trees, and how warming temperatures could affect EAB populations. The emerald ash borer is a green buprestid or jewel beetle native to north-eastern Asia that causes devastating disease in ash trees.
Weather And Climate Summary And Forecast: January 2019 Report, Gregory V. Jones
Weather And Climate Summary And Forecast: January 2019 Report, Gregory V. Jones
Linfield University Wine Studies Reports
This report provides a summary of the weather and climate forecast for January 2019. It includes forecast information specific to the Pacific Northwest and the western United States, as well as forecast information for other portions of the United States and abroad.
Vintage Report 2018: North Willamette Valley, Gregory V. Jones
Vintage Report 2018: North Willamette Valley, Gregory V. Jones
Linfield University Wine Studies Reports
This report describes the impacts of climate and phenology on vintage for the North Willamette Valley in Oregon in 2018. A relatively mild and dry winter set the stage for a 2018 growing season that was highlighted by a cool spring, a summer with low heat stress but high drought stress along with numerous regional fires, and a glorious October. The moderately cool spring led to a late start to the growing season with an average bud break of April 17th delayed by 5-10 days compared to average. However, a warm May through August brought plant growth timing to near …
Farming Within Limits, Lindsay Barbieri, Sonya Ahamed, Sam Bliss
Farming Within Limits, Lindsay Barbieri, Sonya Ahamed, Sam Bliss
Rubenstein School of Environment and Natural Resources Faculty Publications
Global agricultural production is alarmingly unsustainable. Manipulating living beings, their genetics, and entire ecosystems to produce food has always been a technological feat. Advancements in farming technology have made it possible to surpass critical thresholds of planetary sustainability. Technological change in agriculture generates tension between those who benefit and those who bear the costs. Agriculture produces more than enough to feed the world’s human population, but the global economy allocates food inequitably among people and redirects food to industrial feedlots, biofuel refineries, and the waste stream. Technical solutions alone cannot fix the underlying socioeconomic systems that produce unjust and unsustainable …
Scaling Up Sustainability In Commodity Agriculture: Transferability Of Governance Mechanisms Across The Coffee And Cattle Sectors In Brazil, R. Hajjar, P. Newton, D. Adshead, M. Bogaerts, V. A. Maguire-Rajpaul, L. F.G. Pinto, C. L. Mcdermott, J. C. Milder, E. Wollenberg, A. Agrawal
Scaling Up Sustainability In Commodity Agriculture: Transferability Of Governance Mechanisms Across The Coffee And Cattle Sectors In Brazil, R. Hajjar, P. Newton, D. Adshead, M. Bogaerts, V. A. Maguire-Rajpaul, L. F.G. Pinto, C. L. Mcdermott, J. C. Milder, E. Wollenberg, A. Agrawal
Rubenstein School of Environment and Natural Resources Faculty Publications
A number of governance mechanisms address socio-environmental challenges associated with commodity agriculture in tropical forested countries. Governance mechanisms that prove effective in one agricultural sector are often applied to other sectors as well. For example, voluntary certification programs have been adopted by producers of commodities as diverse as beef, coffee, palm oil, and soy. However, there are substantial differences in the extent to which governance mechanisms scale up and achieve impact in different sectors. This paper analyzes how the potential for scaling up a particular governance mechanism is influenced by environmental, market, and social geographies that differ between sectors. Through …
Effectiveness Of Plant Species For Removing Atmospheric Ammonia, Marife B. Anunciado, Sheryll B. Jerez, Hans Williams, Joey Bray, Dean W. Coble, Rena Saito
Effectiveness Of Plant Species For Removing Atmospheric Ammonia, Marife B. Anunciado, Sheryll B. Jerez, Hans Williams, Joey Bray, Dean W. Coble, Rena Saito
Faculty Publications
Six plant species of Yaupon, Eastern red cedar, American holly, Arizona cypress, Arborvitae and Roughleaf dogwood were utilized to determine their effectiveness in the removal of atmospheric ammonia. All species were exposed to three ammonia levels (1, 5 and 10 ppm) in an environmental chamber. Foliar ammonia content was quantified using an enzymatic technique. The effects of exposure to ammonia on the physiological responses (e.g. photosynthetic activity, stomatal conductance, and transpiration rate) of plants in ambient condition were also determined using an open design photosynthetic gas exchange system. Foliar ammonia content was significantly different among the six plant species (p<0.0001) with Eastern red cedar exhibiting the highest content. The physiological responses differed significantly depending on the plant species and the ammonia treatment level. The photosynthetic response of plants to the presence of ammonia was mixed. At low exposure level, all species except Arborvitae had decreased photosynthetic activity, reducing by as much as 44.5% for Yaupon. At the highest concentration, however, Yaupon’s photosynthetic activity improved by about 10%. Exposure to ammonia caused increased stomatal conductance and transpiration rate on American holly and Arizona cypress, making them more susceptible to water loss.
Ua84 Sigma Chi, Wku Archives
Ua84 Sigma Chi, Wku Archives
WKU Archives Collection Inventories
Records created by and about the WKU chapter of Sigma Xi.
Water For A Hungry World: Innovation In Water And Food Security: Proceedings Of The 2019 Water For Food Global Conference. Lincoln., Daugherty Water For Food Global Institute
Water For A Hungry World: Innovation In Water And Food Security: Proceedings Of The 2019 Water For Food Global Conference. Lincoln., Daugherty Water For Food Global Institute
Daugherty Water for Food Global Institute: Literature
Welcome and Opening Remarks : Mike Boehm, Vice President and Vice Chancellor of Agriculture and Natural Resources, University of Nebraska ; Peter G. McCornick, Executive Director, Daugherty Water for Food Global Institute at the University of Nebraska
How the Irrigation Industry is Driving the Future through Efficient Technologies. Speaker: Deborah Hamlin, CEO, Irrigation Association
Sustainable Solutions for Water and Food Security — Business Perspectives. Speaker: Mark Edge, Director of Collaborations for Developing Countries, Bayer
Value of Water. Speakers: Dustin Garrick, Associate Professor and Co-Director of the Smith School of Enterprise and the Environment at the University of Oxford ; …
Growing A Water And Food Secure Future: Annual Report Fy2019 (July 1, 2018 To June 30, 2019), Robert B. Daugherty Water For Food Global Institute
Growing A Water And Food Secure Future: Annual Report Fy2019 (July 1, 2018 To June 30, 2019), Robert B. Daugherty Water For Food Global Institute
Daugherty Water for Food Global Institute: Literature
Ensuring water and food security for our growing world is an audacious goal – exactly what Bob Daugherty sought to achieve by creating the Daugherty Water for Food Global Institute (DWFI) at the University of Nebraska nearly 10 years ago. He, along with leaders and supporters within the University of Nebraska, the state and well beyond, understood that a collective and committed effort on wise water management was essential to producing enough food to feed the world while sustaining our valuable and limited water resources. For decades, many dedicated people around the world have striven to overcome the challenges of …
Following The Seed: Investigating Seed Saving And Network Creation In The Appalachian Region Of Southeastern Ohio, Molly Hicks
Following The Seed: Investigating Seed Saving And Network Creation In The Appalachian Region Of Southeastern Ohio, Molly Hicks
Antioch University Dissertations & Theses
Since the beginning of agriculture, seeds have been cultivated, saved, and exchanged by farmers each year to ensure the success of future crops adapted to local environments. Yet, over ninety percent of our diverse vegetable and fruit crop varieties have been lost due to the industrialization and commercialization of seeds. Industrial agriculture has caused a great homogenization of crop varieties, but locally adapted seeds and their seed savers do still exist on the fringe, and across the world. There is a small but growing body of research on agri-food networks in Western and developing countries where advocates are working to …
Effective Plant Discrimination Based On The Combination Of Local Binary Pattern Operators And Multiclass Support Vector Machine Methods, Vi N T Le, Beniamin Apopei, Kamal Alameh
Effective Plant Discrimination Based On The Combination Of Local Binary Pattern Operators And Multiclass Support Vector Machine Methods, Vi N T Le, Beniamin Apopei, Kamal Alameh
Research outputs 2014 to 2021
Accurate crop and weed discrimination plays a critical role in addressing the challenges of weed management in agriculture. The use of herbicides is currently the most common approach to weed control. However, herbicide resistant plants have long been recognised as a major concern due to the excessive use of herbicides. Effective weed detection techniques can reduce the cost of weed management and improve crop quality and yield. A computationally efficient and robust plant classification algorithm is developed and applied to the classification of three crops: Brassica napus (canola), Zea mays (maize/corn), and radish. The developed algorithm is based on the …
Consultation Summary For Proposed Declared Pest Rates 2019/2020, Department Of Primary Industries And Regional Development, Western Australia
Consultation Summary For Proposed Declared Pest Rates 2019/2020, Department Of Primary Industries And Regional Development, Western Australia
Biosecurity published reports
In accordance with the Biosecurity and Agriculture Management (Declared Pest Account) Regulations 2014, the Minister for Agriculture and Food carries out consultation on Declared Pest Rates, to be considered prior to the rates being determined and gazetted.
This document is the Department of Primary Industries and Regional Development's response to the submissions received.