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| Registros recuperados: 45 | |
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| Ellis, John R.; Lacewell, Ronald D.; Reneau, Duane R.. |
| This study estimates the expected benefits from adoption of new water-related technologies for the Texas High Plains, a region which is currently mining groundwater. Adoption rates for two improved irrigation systems and limited tillage practices are assumed, and changes in net returns, resource usage, and irrigated acres are examined as measures of adoption benefits. A recursive linear programming framework covering a 40-year period is employed, with results indicating that, contrary to what one might hope, adoption will not significantly lengthen the life of the aquifer. Annual water use changes very little with adoption, while irrigated acreages increase slightly. Adoption does provide a substantial increase in annual net returns, with discounted... |
| Tipo: Journal Article |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies. |
| Ano: 1985 |
URL: http://purl.umn.edu/32310 |
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| Rister, M. Edward; Sturdivant, Allen W.; Lacewell, Ronald D.; Michelsen, Ari M.. |
| The Rio Grande has headwaters in Colorado, flows through New Mexico, and serves as the United States.–Mexico border in Texas, emptying into the Gulf of Mexico. Snow melt in Colorado and northern New Mexico constitutes the water river supply for New Mexico and the El Paso region, whereas summer monsoonal flow from the Rio Conchos in Mexico and tributaries, including the Pecos River, provides the Rio Grande flow for southern Texas. The region is mostly semiarid with frequent long-term drought periods but is also characterized by a substantial irrigated agriculture sector and a rapidly growing population. International treaties and interstate compacts provide the rules for allocation of Rio Grande waters between the United States and Mexico and among... |
| Tipo: Journal Article |
Palavras-chave: Agriculture; Agricultural economics; Conservation; Irrigation; Natural resources; Renewable resources; Resources; Water; Resource /Energy Economics and Policy; Q5; Q15; Q20; Q25; Q28. |
| Ano: 2011 |
URL: http://purl.umn.edu/113529 |
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| Teague, Paul W.; Ziemer, Rod F.; Lacewell, Ronald D.. |
| In this study a complete survey of all WJAE articles was conducted. The 158 titles that have appeared in the WJAE as of December 1981 are categorized by institutional category, authorship affiliation, and subject category. These results are compared to similar studies concerning the SJAE and AJAE. Our findings indicate that the WJAE has a broad range of contributors and is not dominated by any one institution, author, or group of authors. We feel that these and other interesting results are of general interest to all WJAE readers. |
| Tipo: Journal Article |
Palavras-chave: Teaching/Communication/Extension/Profession. |
| Ano: 1983 |
URL: http://purl.umn.edu/32486 |
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| Keplinger, Keith O.; McCarl, Bruce A.; Chowdhury, Manzoor E.; Lacewell, Ronald D.. |
| A dry year irrigation suspension has been proposed as a way of reallocating water when aquifer levels are low for the Texas Edwards Aquifer. Under this program, farmers would be paid to suspend irrigation to allow more spring flow or nonagricultural pumping. When irrigation is suspended in the east, springflow response is markedly larger than when suspended in the western portions of the aquifer. Most acreage participates when a $90 per acre payment is offered before the cropping season. Considerably higher payments are needed and less water saved for a suspension program instituted during the cropping season. |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 1998 |
URL: http://purl.umn.edu/31172 |
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| Chowdhury, Manzoor E.; Lacewell, Ronald D.. |
| This study estimates the cost effectiveness of alternative environmental policies for controlling nitrate contamination of groundwater in the Seymour aquifer region of Texas. Results from biophysical simulation model are integrated with a farm-level optimization model. The study also compares the cost of bottled water, used as the lower-bound estimate of benefits of groundwater protection, with the least costly environmental policy. Results indicate that the least-cost policy alternative for the region is about $1 million either to farmers or to the local government and it is approximately three times the cost of bottled water. |
| Tipo: Journal Article |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 1996 |
URL: http://purl.umn.edu/30995 |
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| Leidner, Andrew J.; Lacewell, Ronald D.; Rister, M. Edward; Woodard, Joshua D.; Sturdivant, Allen W.; White, Jacob M.. |
| This paper examines the optimal allocation of several inputs in the context of seawater desalination by reverse osmosis (RO) as a source of municipal (or commercial or industrial) water. A cost-minimization model is developed, a production function is estimated, and sensitivity analyses are conducted using the optimization model to investigate the effect of environmental conditions and economic factors on the optimal input portfolio and the cost of operating a modeled seawater desalination facility. The objectives of this paper are to better understand the effect on the seawater desalination facility’s costs and input portfolio from changes in water quality, membrane lifespan, daily operations schedule, and energy prices. Findings include that lower... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Water; Production; Seawater desalination; Resource /Energy Economics and Policy. |
| Ano: 2011 |
URL: http://purl.umn.edu/98827 |
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| Taylor, C. Robert; Lacewell, Ronald D.; Talpaz, Hovav. |
| A framework for combining extraneous information with an econometric model to evaluate the economic impacts of pesticide withdrawals is presented in this paper. The extraneous information, which can be a best guess or experimental data, is used to shift an econometrically estimated supply function. The full sectoral econometric model is then simulated through time with and without the supply shift to estimate the relative impacts of withdrawing the pesticide. The theoretical framework is applied to the withdrawal of all insecticides used on cotton. |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries. |
| Ano: 1979 |
URL: http://purl.umn.edu/32429 |
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| Lambregts, Johannes Adrianus; Griffin, Wade L.; Lacewell, Ronald D.; Davis, James T.; Clary, Gregory M.. |
| Cost, returns, and economies of scale for small, medium and large catfish farms with recirculating ponds are presented for the upper Texas coast. Internal rates of return are 0.150, 0.183 and 0.219, respectively. Total investment is higher than farms with static ponds but investment per unit production capacity is 7 percent to 16 percent lower. Average total cost per pound is between $0.565 and $0.541, (11 percent 20 percent lower than farms using current technology). These results have implications for regional comparative advantage of catfish production as well as incentive for adoption of new technology in conventional ponds. |
| Tipo: Journal Article |
Palavras-chave: Aquaculture; Catfish; Economics; Off-flavor; Livestock Production/Industries. |
| Ano: 1993 |
URL: http://purl.umn.edu/15045 |
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| Registros recuperados: 45 | |
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