176 research outputs found

    Profitability and Nitrate Leaching Effects of Possible Farming Practice and System Changes Over South Dakota\u27s Big Sioux Aquifer: Case Farm No. 2 Summary

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    The overall goal of the SARE/Water Quality project was to determine whether economic incentives offered by recent environmental provisions of Federal farm program are sufficient to induce Western Corn Belt/Northern Plains farmers in environmentally sensitive areas to adopt sustainable fa practices and systems. To attain this goal, four case farms were chosen involved in this study based on their size, soil types, cropping systems, topography, and management in the Big Sioux Aquifer study area. Case Farm No. 2 is located in Moody County and followed a corn-soybean oats rotation on the acres focused on in the analysis prior to enrollment the Integrated Crop Management (ICM) program. It is a dry-land operation used conventional tillage prior to enrollment in the ICM program. The total operation consists of 1,858 acres, with 710 acres under the ICM program focused on 299 of those ICM acres in our analyses. Lamo and Clamo soils up the majority of the ICM crop acres. These are medium to fine-textured soils overlying a shallow drinking water aquifer

    Profitability and Nitrate Leaching Effects of Possible Farming Practice and System Changes Over South Dakota\u27s Big Sioux Aquifer: Case Farm No. 4 Summary

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    The overall goal of the SARE/Water Quality project was to determine whether economic incentives offered by recent environmental provisions of the Federal farm program are sufficient to induce Western Corn Belt/Northern Great Plains farmers in environmentally sensitive areas to adopt sustainable farming practices and systems. To attain this goal, four case farms were chosen to be involved in this study based on their size, soil types, cropping systems, topography, and management in the Big Sioux Aquifer study area. Case Farm No. 4 is located in Brookings County and followed a continuous corn rotation prior to enrollment in the Water Quality Incentive Program (WQIP). It is an irrigated operation that uses a center-pivot system. Conventional tillage practices are used. The total operation consists of 838 acres, with 213 acres enrolled in the WQIP program. One hundred and fifty of those acres received irrigation management assistance. In one 73-acre field irrigated by a center-pivot system, 66 acres were assumed to be under the center-pivot system and the other 7 acres were assumed to be in the corners of the field where the center-pivot system could not reach. These 7 acres were designated as the set-aside acres for the baseline before scenario. This 73-acre field was focused on in our analyses. The majority of the soils in this field are a combination of coarse-textured (Fordville), and fine-textured (Marysland) soils. Both of these soils overlay a shallow drinking water aquife

    Profitability and Nitrate Leaching Effects of Possible Farming Practice and System Changes Over South Dakota\u27s Big Sioux Aquifer: Case Farm No. 3 Summary

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    The overall goal of the SARE/Water Quality project was to determine whether economic incentives offered by recent environmental provisions of the Federal farm program are sufficient to induce Western Corn Belt/Northern Great Plains farmers in environmentally sensitive areas to adopt sustainable farming practices and systems. To attain this goal, four case farms were chosen to be involved in this study based on their size, soil types, cropping systems, topography, and management in the Big Sioux Aquifer study area. Case Farm No.3 is located in Minnehaha County and has corn, soybeans, oats, alfalfa, and clover. It is a dry-land operation that uses conventional tillage. The total operation consists of 168 acres, with 108 of the acres under the Water Quality Incentive program (WQIP) being focused on in the study. The acres are divided into two separate fields that are managed differently. A corn/soybean rotation is followed on the lower field and inorganic fertilizers were used. The upper field contains two different rotations. One rotation is a corn/oats,clover rotation and the other is a corn/oats,alf/alf/alf/alf/alf rotation. The majority of the soils on the lower field under WQIP are a combination of medium (Brandt), and coarse textured (La Prairie) soils. Both of these soils overlay a shallow drinking water aquifer. The upper field was mostly Moody soils (medium-textured). These soils don\u27t overlay an aquifer, but contribute to the runoff onto the lower field

    Profitability and Nitrate Leaching Effects of Possible Farming Practice and System Changes Over South Dakota\u27s Big Sioux Aquifer: Case Farm No. 1 Summary

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    The overall goal of the SARE/Water Quality project was to determine whether economic incentives offered by recent environmental provisions of the Federal farm program are sufficient to induce Western Corn Belt/Northern Great Plains farmers in environmentally sensitive areas to adopt sustainable farming practices and systems. To attain this goal, four case farms were chosen to be involved in this study based on their size, soil types, cropping systems, topography, and management in the Big Sioux Aquifer study area

    Profitability and Nitrate Leaching Effects of Possible Farming Practice and System Changes Over South Dakota\u27s Big Sioux Aquifer: Case Farm No. 1 Summary

    Get PDF
    The overall goal of the SARE/Water Quality project was to determine whether economic incentives offered by recent environmental provisions of the Federal farm program are sufficient to induce Western Corn Belt/Northern Great Plains farmers in environmentally sensitive areas to adopt sustainable farming practices and systems. To attain this goal, four case farms were chosen to be involved in this study based on their size, soil types, cropping systems, topography, and management in the Big Sioux Aquifer study area

    Profitability and Nitrate Leaching Effects of Possible Farming Practice and System Changes Over South Dakota\u27s Big Sioux Aquifer: Case Farm No. 1 Summary

    Get PDF
    The overall goal of the SARE/Water Quality project was to determine whether economic incentives offered by recent environmental provisions of the Federal farm program are sufficient to induce Western Corn Belt/Northern Great Plains farmers in environmentally sensitive areas to adopt sustainable farming practices and systems. To attain this goal, four case farms were chosen to be involved in this study based on their size, soil types, cropping systems, topography, and management in the Big Sioux Aquifer study area

    Hobby greenhouse

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    The Oklahoma Cooperative Extension Service periodically issues revisions to its publications. The most current edition is made available. For access to an earlier edition, if available for this title, please contact the Oklahoma State University Library Archives by email at [email protected] or by phone at 405-744-6311

    The psychosocial impact of microtia and ear reconstruction: A national data-linkage study

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    IntroductionChildren with visible facial differences are believed to be at increased risk of negative psychosocial behaviours which may manifest as affective disorders. The aim of this study was to determine whether a diagnosis of microtia, and the associated surgical intervention, is associated with psychosocial implications including impaired educational attainment and a diagnosis of an affective disorder.MethodsA retrospective case-control study was conducted using data linkage to identify patients in Wales with a diagnosis of microtia. Matched controls were sought on the basis of age, gender and socioeconomic deprivation status to yield a total sample size of 709. incidence was calculated using annual and geographic birth rates. Surgical operation codes were used to classify patients into those that had no surgery, autologous reconstruction or prosthetic reconstruction. Educational attainment at 11 years of age, plus a diagnosis of depression or anxiety were used as markers of adverse psychosocial outcomes and the relative risk was attained using logistic regression analyses.ResultsThere were no significant associations between a diagnosis of microtia and an increased risk of adverse educational attainment or a risk of an affective disorder diagnosis. Male gender and higher deprivation scores were significantly associated with poorer educational attainment, irrespective of a diagnosis of microtia. Surgical intervention of any nature was also not associated with any increased risk of adverse educational or psychosocial outcomes in microtia patients.DiscussionMicrotia patients in Wales do not appear to be at greater risk of developing affective disorders or impaired academic performance as a result of their diagnosis or associated surgical intervention. Whilst reassuring, the need for appropriate support mechanisms to maintain positive psychosocial wellbeing and academic achievement in this patient cohort is reinforced

    Current-Induced Step Bending Instability on Vicinal Surfaces

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    We model an apparent instability seen in recent experiments on current induced step bunching on Si(111) surfaces using a generalized 2D BCF model, where adatoms have a diffusion bias parallel to the step edges and there is an attachment barrier at the step edge. We find a new linear instability with novel step patterns. Monte Carlo simulations on a solid-on-solid model are used to study the instability beyond the linear regime.Comment: 4 pages, 4 figure
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