Greg Thoma
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View article: The effects of PRRS on the environmental impact of pig production: a life cycle assessment study
The effects of PRRS on the environmental impact of pig production: a life cycle assessment study Open
The Porcine Reproductive and Respiratory Syndrome (PRRS) is a viral pig disease that increases mortality rates and reduces (re)production performance. This worsens a farm’s whole-enterprise feed conversion ratio, which increases its greenh…
View article: Net zero initiative in U.S. beef and dairy systems: integrative on-farm recommendations for greenhouse gas reduction
Net zero initiative in U.S. beef and dairy systems: integrative on-farm recommendations for greenhouse gas reduction Open
Beef and dairy production systems play an important role in society, providing a variety of ecosystem services. U.S. beef and dairy production systems require being aligned with the global and national effort to stabilize the anthropogenic…
A Life Cycle Assessment Study of the Impacts of Pig Breeding on the Environmental Sustainability of Pig Production Open
Lifecycle assessment (LCA) quantified changes in environmental impact categories (global warming, eutrophication, etc.) from 2021 to 2030 due to genetic trends in (re)production traits in pig lines of the breeding company Genus-PIC. The 20…
A Life Cycle Assessment Study of the Impacts of Pig Breeding on the Environmental Sustainability of Pig Production Open
Lifecycle assessment (LCA) quantified changes in environmental impact categories (global warming, eutrophication, etc.) from 2021 to 2030 due to genetic trends in (re)production traits in pig lines of breeding company Genus-PIC. The 2030 l…
Fifty years of environmental progress for United States dairy farms Open
Dairy farms in the United States have changed in many ways over the past 50 yr. Milk production efficiency has increased greatly, with ∼30% fewer cows producing about twice the amount of milk today. Other improvements include increases in …
A comprehensive environmental assessment of beef production and consumption in the United States Open
Life cycle assessments of have been completed documenting the environmental sustainability of beef, but these studies have often focused on specific cattle production systems with an emphasis on global warming potential. A need exists for …
Spatialized Life Cycle Assessment of Fluid Milk Production and Consumption in the United States Open
Purpose: Understanding the main factors affecting the environmental impacts of milk production and consumption along the value chain is key towards reducing these impacts. This paper aims to present detailed spatialized distributions of im…
Supporting information for U.S. Dairy LCA: Matrices for spatialized impacts Open
These files provide matrices as supporting information to the manuscript "Spatialized Life Cycle Assessment of Fluid Milk Production and Consumption in the United States", published in Sustainability: https://doi.org/10.3390/su15031890
Supporting information for U.S. Dairy LCA: Matrices for spatialized impacts Open
These files provide matrices as supporting information to the manuscript "Spatialized Life Cycle Assessment of Fluid Milk Production and Consumption in the United States", published in Sustainability: https://doi.org/10.3390/su15031890
Prospective Life Cycle Assessment and Cost Analysis of Novel Electrochemical Struvite Recovery in a U.S. Wastewater Treatment Plant Open
Nutrient recovery in domestic wastewater treatment has increasingly become an important area of study as the supply of non-renewable phosphorus decreases. Recent bench-scale trials indicate that co-generation of struvite and hydrogen using…
69 Animal Sourced Foods Role in Sustainable Nutrition Open
Amid growing concern regarding the food system are calls to reduce or eliminate animal sourced foods (ASF) from human diets. Despite the green revolution and consequent increase in crop yields, nutrient deficiencies are still problematic, …
Environmental life cycle impact assessment of fresh California strawberries: A full supply chain perspective Open
A cradle-to-grave life cycle assessment (LCA) study was conducted for an open-field strawberry (strb) produced in California. The evaluation covered the full supply chain of strawberry, which also included the impacts of food waste generat…
Assessment of Struvite as an Alternative Sources of Fertilizer-Phosphorus for Flood-Irrigated Rice Open
Phosphorus (P) recovery from wastewaters as struvite (MgNH4PO4·6H2O) may be a viable alternative fertilizer-P source for agriculture. The objective of this study was to evaluate the economic and environmental implications of struvite as a …
Environmental Impact Assessment of Tractor Guidance Systems Based on Pasture Management Scenarios Open
Highlights Tractor guidance (TG) reduced the overlaps and gaps during fertilizer and herbicide applications. Production gains with TG on were 2.7% to 6.5% relative to TG off; however, fuel consumption increased. A 5% increase in yield is n…
Analysis of Life Cycle Environmental Impacts of Using Enogen Corn in Beef Cattle Rations Open
Agricultural production systems have been identified as significant sources of anthropogenic impacts across several environmental key performance indicators (KPIs). Livestock husbandry is growing in global importance as the demand for high…
520 Late-Breaking: Effect of Technology on Environmental Emissions from Four Representative U.S. Feedlots and the Beef Production System Open
Our objective was to evaluate effects of technological management strategies on environmental impacts and net returns of feedlot operations in the United States. Feedlot operations were simulated with the Integrated Farm System Model (IFSM…
Environmental assessment of United States dairy farms Open
Dairy farms in the United States are diverse and although regional dairy production and farm strategy has been evaluated for environmental impact, a comprehensive national assessment is important to define national priorities for sustainab…
Holistically valuing public investments in agricultural water conservation Open
Multiple Inlet Rice Irrigation (MIRI) reduces water use and production costs for Arkansas rice producers. While the water savings from MIRI have been analyzed experimentally, the overall holistic benefits of MIRI rice have yet to be quanti…
Disinfection/Ammonia Removal from Aquaculture Wastewater and Disinfection of Irrigation Water using Electrochemical Flow Cells: A Case Study in Hawaii Open
This field case study reports findings on disinfection/ammonia removal from aquaculture wastewater and disinfection of irrigation water carried out at an aquaculture farm and two irrigation locations in Hawaii. We used a flow cell incorpor…
Disinfection of Irrigation Water using Titanium Electrodes Open
The microbiological safety of irrigation water is critical to the prevention of fresh produce contamination with human pathogens. This work reports on the electrochemical disinfection of natural irrigation water using an undivided batch ce…