14 resultados para ORGANIC-INORGANIC PEROVSKITES
em Iowa Publications Online (IPO) - State Library, State of Iowa (Iowa), United States
Resumo:
Tillage systems play a significant role in agricultural production throughout Iowa and the Midwest. It has been well documented that increased tillage intensities can reduce soil organic matter in the topsoil due to increased microbial activity and carbon (C ) oxidation. The potential loss of soil organic matter due to tillage operations is much higher for high organic matter soils than low organic matter soils. Tillage effects on soil organic matter can be magnified through soil erosion and loss of soil productivity. Soil organic matter is a natural reservoir for nutrients, buffers against soil erosion, and improves the soil environment to sustain soil productivity. Maintaining soil productivity requires an agriculture management system that maintains or improves soil organic matter content. Combining cropping systems and conservation tillage practices, such as no-tillage, strip-tillage, or ridge-tillage, are proven to be very effective in improving soil organic matter and soil quality.
Resumo:
Evaluating the possible benefits of the introduction of genetically modified (GM) crops must address the issue of consumer resistance as well as the complex regulation that has ensued. In the European Union (EU) this regulation envisions the “co-existence” of GM food with conventional and quality-enhanced products, mandates the labelling and traceability of GM products, and allows only a stringent adventitious presence of GM content in other products. All these elements are brought together within a partial equilibrium model of the EU agricultural food sector. The model comprises conventional, GM and organic food. Demand is modelled in a novel fashion, whereby organic and conventional products are treated as horizontally differentiated but GM products are vertically differentiated (weakly inferior) relative to conventional ones. Supply accounts explicitly for the land constraint at the sector level and for the need for additional resources to produce organic food. Model calibration and simulation allow insights into the qualitative and quantitative effects of the large-scale introduction of GM products in the EU market. We find that the introduction of GM food reduces overall EU welfare, mostly because of the associated need for costly segregation of non-GM products, but the producers of quality-enhanced products actually benefit.
Resumo:
Organic producers have limited methods of avoiding plant diseases that result in cosmetic damage to produce. Therefore, the appearance of organic produce is often less than perfect. We use an experimental auction to investigate how cosmetic damage affects consumers’ willingness to pay for organic apples. We find that 75% of the participants are willing to pay more for organic than for conventional apples given identical appearance. However, at the first sight of any imperfection in the appearance of the organic apples, this segment is significantly reduced. Furthermore, we find that there is a significant effect of interaction between cosmetic damage and product methods. Even though most consumers say they buy organic products to avoid pesticides, we find that cosmetic damage has a larger impact on the willingness to pay for organic apples than for conventional apples.
Resumo:
A newsletter produced by Iowa Department of Agriculture and Land Stewardship about the changes of organic farming and raising livestock in Iowa.
Resumo:
A newsletter produced by Iowa Department of Agriculture and Land Stewardship about the changes of organic farming and raising livestock in Iowa.
Resumo:
A newsletter produced by Iowa Department of Agriculture and Land Stewardship, this information is all about Iowa growers, what is new, what is going on around Iowa for growing.
Resumo:
Newsletter produced by Iowa Department of Agriculture and Land Stewardship about Organic News in farming.
Resumo:
Newsletter produced by Iowa Department of Agriculture and Land Stewardship about Organic News in farming.
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Newsletter produced by Iowa Department of Agriculture and Land Stewardship about Organic News in farming.
Resumo:
Newsletter produced by Iowa Department of Agriculture and Land Stewardship about Organic News in farming.
Resumo:
Newsletter produced by Iowa Department of Agriculture and Land Stewardship about Organic News in farming.
Resumo:
Newsletter produced by Iowa Department of Agriculture and Land Stewardship about Organic News in farming.
Resumo:
Newsletter produced by Iowa Department of Agriculture and Land Stewardship about Organic News in farming.
Resumo:
Newsletter produced by Iowa Department of Agriculture and Land Stewardship about Organic News in farming.
