23,107 research outputs found
The outline scheme for closing the waste landfill Ostri vrh in Logatec
Get PDFThe present Master's thesis seeks to present the landfill Ostri vrh in Logatec, its current function and\ud
its possibilities after closing it. The landfill does not have a valid environmental usage permision\ud
anymore therefore it is in the closing process. The landfill was established in year 1977 when the issue\ud
of waste management was not yet so familiar and developed. Situation in the field of waste\ud
management has improved significantly since then, mainly due to the implementation of appropriate\ud
environmental policies. Today much more waste is reused or recycled and this leads to empty landfills\ud
across the country. The same situation is in the landfill Ostri vrh. As a starting point basic concepts\ud
and definitions in the field of waste management and the regulatory framework that applies to the\ud
scope of the European Union and Slovenia is presented. It is followed by an insight into the impact of\ud
the landfill on the environment and its status quo. Second part of the thesis is focused into presenting\ud
conceptual solution for the landfill closing and the possibility of technological processes for\ud
purification of leachate. One of the possible solutions is complete closure of the landfill as defined by\ud
the Regulation on the waste landfills. That would mean construction of the sealed cover in order to\ud
isolate it from its surroundings. System of pumps would create a closed loop of the leachate, so we\ud
would not need an independent wastewater treatment plant. In the event that leachate would not be\ud
returned to the landfill, it would be necessary to clean it with means of membrane technology, physicchemical\ud
or biological processes. Furthermoew, the thesis also presents a method of forced ventilation\ud
and energy use of landfill waste with a plasma reactor. Thus, on the basis of both a study of the\ud
literature and analysis of the empirical data collected through the research results show that currently\ud
complete closure is best and money affordable solution.\ud
Corn
WHAT IS THE VALUE OF BT CORN?
Get PDFA common perception is that the value of Bt corn arises from two components-Bt corn increases expected profit and reduces profit variability. This perception encourages farmers and the policy makers to add a risk benefit to estimates of the value of Bt corn to account for the variability reduction. However, a conceptual model generates a useful decomposition of the value of Bt corn and a condition determining the impact of Bt corn on profit variability. An empirical model finds that Bt corn increases profit variability and thus decreases the value of Bt corn by 10-25% depending on risk preferences.Crop Production/Industries,
YIELD BENEFIT OF CORN EVENT MON 863
Get PDFData from field experiments are used to estimate the yield benefit of corn hybrids containing event MON 863 relative to nontransgenic corn hybrids without corn rootworm control and with a soil insecticide for corn rootworm control. Over typical ranges for corn rootworm population pressure, event MON 863 provides a yield benefit of 9-28% relative to no control and of 1.5-4.5% relative to control with a soil insecticide. For a reasonable range of prices and yields, the value of the event MON 863 yield benefit is 75/ac relative to no control and 12/ac relative to control with a soil insecticide, depending on corn rootworm pressure. Because of the low correlation between yield loss and the root rating difference, a common empirical finding when estimating yield loss with root ratings, the 95% confidence intervals around these averages are quite wide. Though on average, event MON 863 has substantial value, the wide confidence intervals imply that farmers will see a wide variety of actual performance levels in their fields. This uncertainty in the realized yield benefit is not due to any property of event MON 863, but rather due to the inherent randomness in the numerous environmental and agronomic factors determining a corn plant's yield and yield response to corn rootworm larval feeding damage.Crop Production/Industries,
ESTIMATING THE VALUE OF BT CORN: A MULTI-STATE COMPARISON
Get PDFBt corn offers a powerful tool to control European corn borers and some other pests. Because pest infestations and farming practices differ across the Corn Belt, economic benefits also differ. This research estimates the value of Bt corn across the Corn Belt. Results identify areas where Bt adoption is economically justified.Crop Production/Industries, Research and Development/Tech Change/Emerging Technologies,
Kansas Corn Commission Press Releases, 2021. Kansas Corn Commission News Releases, 2021.
No full textThis internet resource contains news releases issued throughout the year.Jan. 8 E-News Political Outlook -- 2021 Kansas Corn School Webinars Announced -- Kansas Farmers Harvest Second Largest Corn Crop -- National Corn, Ethanol Leaders to Speak at Online Kansas Corn Symposium and Annual Meeting -- Kansas Corn Recognizes Collegiate Honors During Annual Symposium -- 2020 Kansas Corn Yield Contest Winners Announced -- Kansas Corn Growers Association Elects New Board Member; Holds First Virtual Annual Meeting -- Kansas Corn STEM Launches “We Grow Corn!” Public Library Series -- 2021 Corn School Presentations Now Available Online -- Thomas County Leads Kansas Corn Production -- Cost-share Funds Available for Fuel Retailers to Add E15 -- Kansas Corn . . . On the Air -- EPA’s E15 Decision for KC Is a Win for Drivers, Air Quality and Corn Farmers -- Production Focused, Communication Driven: Interning with Kansas Corn -- Find E15 Fuel Here! -- Kansas Corn Growers Encouraged to Enter State, National Yield Contests -- Kansas Corn STEM Launches Summer Scientist Program -- KCGA Disagrees with Court Ruling Against Year-Round E15 -- Kansas Corn Invites Farmers to Summer Listening Tour Stops -- Kansas Corn Growers Association Appoints Board Member -- Kansas Corn Commission Appoints Two Growers to Fill Retiring Commissioners -- Kansas Corn Welcomes Next Generation Fuels Act Introduction -- Kansas, Missouri, Nebraska Corn Checkoffs Help Build Ethanol Infrastructure in Top U.S. Ethanol Market -- KCGA Represents Grower Interests in Tax and WOTUS Letters and Comments -- Why I Contribute to CornPAC -- Mental Health Matters, Especially During Harvest -- Kansas Corn STEM Lesson Author KaCee James -- Pulled Pork: A BBQ Staple -- KCGA: EPA Ethanol Announcement Falls Short -- 2022 Kansas Corn Schools- Both In-Person and Virtual Sessions
The Value of Bt Corn in Southwest Kansas: A Monte Carlo Simulation Approach
Get PDFWhile most Corn Belt farmers consider planting Bt corn to control European corn borer, southwestern Kansas farmers must also take into account an array of other insect pests, including corn rootworm, spider mites, and southwestern corn borer. This research uses a decision analysis framework to estimate the expected economic value of Bt corn in southwest Kansas. Mean per acre Bt values ranged from 34.60, well above the technology fee assumed to be 5.25 per acre at a seeding rate of 30,000 seeds per acre. The minimum value over all scenarios was $8.69 per acre. Using Monte Carlo simulation, it was shown that European and southwestern corn borer infestation probabilities, expected corn price, and expected pest-free yields are important determinants of the value of Bt corn.Bt corn, decision analysis, European corn borer, integrated pest management, Monte Carlo simulation, southwestern corn borer, Crop Production/Industries,
Sustainability of Corn Stover Harvest for Biomass
Get PDFOff-farm demand for crop residues is expected to grow as bioenergy policies become effective. Demand for residues will provide farmers with an additional source of revenue but it may also trigger losses in soil organic carbon and increases in fertilizer application. This study develops a dynamic economic model of stover harvest that permits conceptualization and quantification of these potential tradeoffs. We parameterize our model based on publicly available studies of soil biophysical relationships in the Corn Belt. Under these parameter values and 2010 corn and fertilizer prices harvesting stover is not economically convenient at prices below $53 per dry ton of stover. Results suggest that the rate of stover harvest may be quite sensitive and negatively linked to corn prices, which means that policies favoring the use of stover for biomass may be overridden by further increases in corn price. The negative link between stover harvest and corn prices, while somewhat counterintuitive, is driven by the fact that removal of stover reduces future grain yield (through reductions in soil organic carbon). Results also seem to indicate that, under plausible parameter values, profit maximizing farmers would increase stover supply in response to increases in stover price. However increases in supply are, according to our simulations, associated with (potentially significant) reductions in soil organic carbon (and hence carbon emissions as these are positively linked) and increases in nitrogen application (and potential runoffs). This result suggests that concerns about adverse environmental implications of harvesting stover may be justified, and more precise quantification of environmental tradeoffs should be pursued by future research.stover supply, biomass, soil productivity, soil organic carbon, nitrogen, Environmental Economics and Policy, Farm Management, Land Economics/Use, Resource /Energy Economics and Policy, C61, Q12, Q24, Q42, Q53,
ECONOMIC VIABILITY OF BT-CORN IN THE U.S.
Get PDFBt-corn, a genetically engineered insect resistant variety, has been adopted by almost one-quarter of all corn farmers, resulting in economic impacts on both conventional corn growers and Bt-corn growers. we estimate changes in profits for both types of farmers with different levels of seed premiums, yield increases and adoption rates. We find that Bt-corn growers will see their profits decline when the adoption rate and seed premium are high, if they are not offset by higher yields. Conventional corn growers will always experience a decline in profits because the yield increase from Bt-corn causes corn price to fall.Crop Production/Industries,
RISK AND RETURN TO IP GRAIN PRODUCTION: THE CASE OF HIGH OIL CORN
Get PDFReturns for soybeans, commodity corn and high oil corn under an export and domestic market buyer's-call contract were simulated. High oil corn is competitive with commodity corn when yield drag is two percent and bundling reduces seed cost. Commodity loan rate is important in reducing high oil corn price risk.Crop Production/Industries,
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