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Full-Text Articles in Agriculture
Impacts Of The Food Safety Modernization Act On On-Farm Food Safety Practices For Small And Sustainable Produce Growers, Aaron Adalja, Erik Lichtenberg
Impacts Of The Food Safety Modernization Act On On-Farm Food Safety Practices For Small And Sustainable Produce Growers, Aaron Adalja, Erik Lichtenberg
Aaron Adalja
We use data from a national survey of fruit and vegetable growers to examine the current prevalence and cost burden of food safety practices required in the proposed Produce Rule implementing the Food Safety Modernization Act. In particular, we analyze the influence of farm size and farming practices on the probability of adopting food safety measures that would be required by the Produce Rule; and we analyze how the costs of using those food safety practices vary by farm size and farm practices. Majorities of our respondents currently employ most of the food safety practices that would be required under …
Adoption And Coexistence Of Ge, Conventional Non-Ge, And Organic Crops, Aaron Adalja, Catherine Greene, James Hanson, Robert Ebel, Michael Barron
Adoption And Coexistence Of Ge, Conventional Non-Ge, And Organic Crops, Aaron Adalja, Catherine Greene, James Hanson, Robert Ebel, Michael Barron
Aaron Adalja
The adoption of genetically engineered (GE) crop varieties by U.S. farmers is widespread for major crops—94 percent of planted acres for soybeans, and 88 percent for corn in 2012 (USDA-NASS 2012). The potential exists for GE crop production to impose costs on organic and conventional non-GE production via unintended presence of GE material along the supply chain through: • Contamination of seed stock • Accidental cross-pollination • Accidental co-mingling during planting, harvesting, handling, and storing of crops (Bullock and Desquilbet 2002). Maintaining the integrity of GE-differentiated product markets relies on segregation protocols such as: • Hybrid selection and seed purity …
The Costs Of Photorespiration To Food Production Now And In The Future, Berkley J. Walker, Andy Vanloocke, Carl J. Bernacchi, Donald R. Ort
The Costs Of Photorespiration To Food Production Now And In The Future, Berkley J. Walker, Andy Vanloocke, Carl J. Bernacchi, Donald R. Ort
Andy VanLoocke
Photorespiration is essential for C3 plants but operates at the massive expense of fixed carbon dioxide and energy. Photorespiration is initiated when the initial enzyme of photosynthesis, ribulose-1,5-bisphosphate carboxylase/ oxygenase (Rubisco), reacts with oxygen instead of carbon dioxide and produces a toxic compound that is then recycled by photorespiration. Photorespiration can be modeled at the canopy and regional scales to determine its cost under current and future atmospheres. A regional-scale model reveals that photorespiration currently decreases US soybean and wheat yields by 36% and 20%, respectively, and a 5% decrease in the losses due to photorespiration would be worth approximately …