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  • 1
    Electronic Resource
    Electronic Resource
    POTENTIAL EFFECTS OF CLIMATE CHANGE ON AGRICULTURAL WATER USE IN THE SOUTHEAST U.S. (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 35 (1999), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : Climate change has the potential to have dramatic effects on the agricultural sector nationally and internationally as documented in many research papers. This paper reports on research that was focused on a specific crop growing area to demonstrate how farm managers might respond to climate-induced yield changes and the implications of these responses for agricultural water use. The Hadley model was used to generate climate scenarios for important agricultural areas of Georgia in 2030 and 2090. Linked crop response models indicated generally positive yield changes, as increased temperatures were associated with increased precipitation and CO2. Using a farm management model, differences in climate-induced yield impacts among crops led to changes in crop mix and associated water use; non-irrigated cropland received greater benefit since irrigated land was already receiving adequate moisture. Model results suggest that farm managers will increase cropping intensity by decreasing fallowing and increasing double cropping; corn acreage decreased dramatically, peanuts decreased moderately and cotton and winter wheat increased. Water use on currently irrigated cropland fell. The potential for increased water use through conversion of agriculturally important, but currently non-irrigated, growing areas is substantial.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1999.tb04237.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Economic Assessment of Alternative Aquaculture Aeration Strategies (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the World Aquaculture Society 19 (1988), S. 0 
    Details
    ISSN: 1749-7345
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Oxygen depletion is a serious problem for the catfish industry, especially as producers attempt to increase their production intensity. Aeration, either emergency or continuous, is the most common method used to address oxygen depletion.A risk-programming model using Target MOTAD methodology was developed to study the aquacultural producer's aeration decision-making process. Effects of stocking rate, aeration yield response and availability of labor, capital and electricity on the selection of aeration strategy were analyzed.Continuous aeration with electric paddlewheels was most often selected as the best aeration strategy. However, as farmers become increasingly concerned with financial risk, they apply continuous aeration with pump sprayers first, then no aeration and lastly emergency aeration with tractor-powered paddlewheels. Emergency aeration was only used when: 1) electricity was not available and the producer desired a highly conservative financial strategy, and 2) the relative efficiency of continuous aeration in the field was dramatically reduced from experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-7345.1988.tb00934.x
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  • 3
    Electronic Resource
    Electronic Resource
    Economic Assessment of Alternative Aquaculture Aeration Strategies (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the World Aquaculture Society 19 (1988), S. 0 
    Details
    ISSN: 1749-7345
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Oxygen depletion is a serious problem for the catfish industry, especially as producers attempt to increase their production intensity. Aeration, either emergency or continuous, is the most common method used to address oxygen depletion.A risk-programming model using Target MOTAD methodology was developed to study the aquacultural producer's aeration decision-making process. Effects of stocking rate, aeration yield response and availability of labor, capital and electricity on the selection of aeration strategy were analyzed.Continuous aeration with electric paddlewheels was most often selected as the best aeration strategy. However, as farmers become increasingly concerned with financial risk, they apply continuous aeration with pump sprayers first, then no aeration and lastly emergency aeration with tractor-powered paddlewheels. Emergency aeration was only used when: 1) electricity was not available and the producer desired a highly conservative financial strategy, and 2) the relative efficiency of continuous aeration in the field was dramatically reduced from experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-7345.1988.tb01050.x
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  • 4
    Electronic Resource
    Electronic Resource
    Demonstrating the Use of Risk Programming for Aquacultural Farm Management: (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the World Aquaculture Society 18 (1987), S. 0 
    Details
    ISSN: 1749-7345
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A risk programming method that evaluates production plans based on expected income and risk was demonstrated using representative data from Panama. Results illustrate the usefulness of the program in presenting production choices to decision makers and evaluating those choices under changing conditions.Less experienced or less financially secure farmers may select farm plans that differ quite importantly from those chosen by more experienced or more financially secure farmers. If farm survival is in doubt, more conservative farm plans will generally be adopted. Without consideration of the potential losses, it will often appear that all farmers should pursue the most intensive farm plan within their farming capabilities. However, many farmers will employ less intensive management strategies if the potential for losses associated with more intensive strategies is perceived to be excessive.The model indicated that management strategies were sensitive to changes in shrimp price and feed cost, but less sensitive to the costs of post larvae or energy. Also, shrimp farm managers should give serious consideration to not producing in the dry season due to relatively high risk and low expected returns. Farmers should be most concerned with quality and availability of post larvae, not price. If hatcheries can address these concerns, the higher price of hatchery post larvae will be justified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-7345.1987.tb01037.x
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  • 5
    Electronic Resource
    Electronic Resource
    An Econometric Estimation of Market Growth for the U.S. Processed Catfish Industry (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the World Aquaculture Society 22 (1991), S. 0 
    Details
    ISSN: 1749-7345
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Inadequate information pertaining to the growth potential of the US. processed catfish industry has been a major factor leading to cyclical periods of excess supply or demand resulting in misal-location of resources and price instability. Better information for industry planners (e.g., producers, processors, government regulatory agencies, and university researchers) on future sales potential would assist in decreasing the misuse of resources. An econometric model of wholesale demand for US. processed catfish was developed to provide estimates of future sales under various scenarios. In addition to the standard variables included in models of demand for food items—price, income, and population—the effects of product life cycle and industry-sponsored generic advertising are quantitatively incorporated. Seasonality of demand and rigidities in marketing and consumer behavior are additional considerations explicitly modeled via monthly dummy variables and a Ner-lovian partial adjustment mechanism, respectively.Model results indicate the impact of alternative future price scenarios on wholesale processed caffish sales. At the mean real wholesale price of $1.60 (December 1988 dollars) for whole-dressed caffish and a real generic advertising expenditure of one million dollars postulated for 1995, projected aggregate sales are 219.2 million pounds, a 23% increase over 1989 sales. Projected 1995 wholesale sales are very sensitive to price with alternative price postulations of $1.40 and $1.80 resulting in projected sales of 252.3 and 193.6 million processed pounds, respectively. An estimated 7% average increase in wholesale sales of catfish was attributed to the industry-sponsored generic advertising campaign. Model projection estimates and impacts are posed as a quantitative source of information to be used with other information in resource allocation issues faced by industry decision makers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-7345.1991.tb00711.x
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  • 6
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    Assessment of Economic and Water Quality Impacts of Land Use Change Using a Simple Bioeconomic Model (2008)
    Springer
    Details
    Publication Date: 2008-03-25
    Print ISSN: 0364-152X
    Electronic ISSN: 1432-1009
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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    PAPER CURRENT
  • 7
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    Optimal Control of Fish Growth (1991)
    Oxford University Press
    Details
    Publication Date: 1991-02-01
    Print ISSN: 0002-9092
    Electronic ISSN: 1467-8276
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 8
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    Watershed Retrofit and Management Evaluation for Urban Stormwater Management Systems in North Carolina (2010)
    Wiley
    Details
    Publication Date: 2010-12-01
    Print ISSN: 1936-7031
    Electronic ISSN: 1936-704X
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Published by Wiley
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  • 9
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    POTENTIAL EFFECTS OF CLIMATE CHANGE ON AGRICULTURAL WATER USE IN THE SOUTHEAST U.S. (1999)
    Wiley
    Details
    Publication Date: 1999-12-01
    Print ISSN: 1093-474X
    Electronic ISSN: 1752-1688
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Published by Wiley
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  • 10
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    Development of an Optimal Water Allocation Decision Tool for the Major Crops During the Water Deficit Period in the Southeast U.S. (2005)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: We developed a dynamic model to optimize irrigation application in three major crops (corn, cotton and peanuts) grown in the Southeast USA. Water supply amount is generated from an engineering model which is then combined with economic models to find the optimal amount of irrigation water to apply on each crop field during the six critical water deficit weeks in summer. Results indicate that water is applied on the crop with the highest marginal value product of irrigation. Decision making tool such as the one developed here would help farmers and policy makers to find the maximum profitable solution when water shortage is a serious concern.
    Keywords: Earth Resources and Remote Sensing
    Format: text
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