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| Registros recuperados: 31 | |
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| Lowenberg-DeBoer, James. |
| This analysis works out the economic implications for variable rate seeding of the corn population response curves estimated by Pioneer Hi-Bred agronomists. Examples are developed for various mixes of low, medium and high yield potential soil, as well as for a range of seed costs and variable rate equipment costs. The strategies analyzed were: variable rate planting using agronomic recommendations for each yield potential zone, variable rate planting using an economic decision rule for each yield potential zone, an information strategy which sets the uniform planting rate at the highest population indicated by agronomic recommendations for any part of the field and a second information strategy which uses an economic decision rule for the whole field based... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Precision farming; Variable rate; Corn; GPS; Production economics; Crop Production/Industries. |
| Ano: 1998 |
URL: http://purl.umn.edu/28685 |
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| Lambert, Dayton M.; Lowenberg-DeBoer, James; Griffin, Terry W.; Peone, J.; Payne, Tim; Daberkow, Stan G.. |
| Precision agriculture (PA) technology has been on the market for over ten years. Global Positioning Systems (GPS), Geographic Information Systems (GIS), yield monitors, variable rate technologies (VRT) and other spatial management technologies are being used by farmers worldwide, but questions remain about the profitability of the technology and its future. This paper summarizes: 1) data on adoption of PA technology worldwide, 2) review of PA economics studies and 3) efforts to make better use of yield monitor and other sensor data in crop management. The adoption estimates are based on reports by an international network of collaborators. This paper draws on USDA ARMS data to update U.S. PA adoption numbers. The PA profitability summary goes beyond... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Agribusiness. |
| Ano: 2004 |
URL: http://purl.umn.edu/28615 |
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| Kushwaha, Saket; Musa, A.S.; Lowenberg-DeBoer, James; Fulton, Joan R.. |
| Cowpea is the most important indigenous African grain legume for both home use and as a cash crop. Because of its tolerance to drought it is especially important for the Sahel. Genetic transformation of cowpea with Bachilius Thurengius (Bt) genes to control pod boring insects has many advantages, but little is known of the potential consumer response. This paper analyzes and reports the results of a survey of 200 consumers in northern Nigeria in early 2003 concerning consumer awareness of and acceptance of biotechnology. Ninety percent of the respondents were aware of GM products. Those respondents who were most concerned about the ethics of genetic transformation were likely to disapprove of such products, while those individuals who identified... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Institutional and Behavioral Economics. |
| Ano: 2004 |
URL: http://purl.umn.edu/20216 |
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| Ibro, Germaine; Fulton, Joan R.; Lowenberg-DeBoer, James. |
| Kosai, a deep-fat fried fritter made from cowpea, is an important product for economic development and poverty alleviation. Kosai is sold as street food almost exclusively by women entrepreneurs who use the money they earn from selling kosai on savings and daily expenditures for their family. In addition, cowpea is the more important indigenous African legume and kosai production uses a significant amount of cowpea. Data was collected, via personal interviews, with about 400 vendors in three different cities in the West African country of Niger. Results revealed that vendors with more experience were more likely to be successful. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Community/Rural/Urban Development. |
| Ano: 2006 |
URL: http://purl.umn.edu/21160 |
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| Faye, Mbene Dieye; Jooste, Andre; Lowenberg-DeBoer, James; Fulton, Joan R.. |
| In examining demand for a product it is useful to think of consumers not as purchasing the product, but as purchasing its characteristics that provide utility. Consequently, it is important to measure the specific characteristics that consumers perceive as providing them with utility. In this article a hedonic pricing model is used to investigate the influence of different cowpea characteristics on cowpea prices in Senegal. The results provide valuable information for research institutions, producers, and traders. Cowpea plant breeders should emphasise large grain size as the main characteristic since buyers are willing to pay a premium for this characteristic. This should translate into higher returns on R&D. There exist differences between markets in... |
| Tipo: Journal Article |
Palavras-chave: Demand and Price Analysis. |
| Ano: 2004 |
URL: http://purl.umn.edu/9494 |
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| Dofonsou, Sika Gbegbelegbe; Lowenberg-DeBoer, James; Adeoti, Razack; Coulibaly, Ousmane; Lusk, Jayson L.. |
| The net impact of pest-resistant GM crops on the welfare of both producers and consumers in developing countries is currently unknown and subject to speculation. This study uses choice-based conjoint protocol to estimate the net impact of pest-resistant Genetically Modified (GM) cowpea on net social welfare in Benin given price and income risks. Results imply that Bt cowpea will increase expected net social welfare by about $US 50 million per year in Benin given no inefficiencies in the seed sector. If inefficiencies in the seed sector are such that cowpea growers can access Bt cowpea seeds only 50% of the time, net benefits from Bt cowpea drop to about $US 11 million per year. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries. |
| Ano: 2007 |
URL: http://purl.umn.edu/9817 |
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| Bongiovanni, Rodolfo; Lowenberg-DeBoer, James. |
| Adapting variable rate technology (VRT) to Argentine conditions requires methods that use inexpensive information and that focus on the inputs and variability common to Argentine maize and soybean growing areas. The goal of this study is to determine if spatial regression analysis of yield monitor data can be used to estimate the site-specific crop Nitrogen (N) response needed to fine tune variable rate fertilizer strategies. N has been chosen as the focus of this study because it is the most commonly used fertilizer by corn farmers in Argentina. The methodology uses yield monitor data from on-farm trials to estimate site-specific crop response functions. The design involves a strip trial with a uniform N rate along the strip and a randomized complete... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries. |
| Ano: 2001 |
URL: http://purl.umn.edu/20650 |
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| Lambert, Dayton M.; Lowenberg-DeBoer, James. |
| Soybean production in narrow rows is not a novel idea. Wiggans (1939) reported yield advantages of drilled soybeans in narrow rows (8-inches) over soybeans planted in 28-inch rows. However, farmers, consultants, and extension agents face a bewildering array of information regarding optimal row widths intended to maximize return from corn and soybeans during a growing cycle. This information is further complicated by the choices of planting equipment specialized for certain row widths. That soybeans planted in narrow rows generally out-yield soybean produced in wider rows is well documented. However, what is not clear is which narrow row width consistently and significantly outperforms other widths, yield-wise and return-wise, in which regions (Devlin... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Crop Production/Industries. |
| Ano: 2001 |
URL: http://purl.umn.edu/28681 |
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| Mishili, Fulgence J.; Temu, Anna A.; Fulton, Joan R.; Lowenberg-DeBoer, James. |
| The objective of this study was to determine the impact of bean grain quality characteristics on market price. The data was collected from retail markets in Tanzania. Hedonic pricing provides a statistical estimate of premiums and discounts. Implications for development of bean markets include: i) extension agents should identify cost-effective ways to educate producers on targeting urban market niches based on consumer preferences for varieties, ii) breeding for bruchid resistant beans and use of appropriate storage technologies would alleviate the problems of storage damage, and iii) requiring a portfolio of grain quality characteristics to fit consumer preferences in local markets. |
| Tipo: Journal Article |
Palavras-chave: Beans; Markets; Consumer preferences; Hedonic; Storage; Tanzania; Marketing; D12; Q13. |
| Ano: 2009 |
URL: http://purl.umn.edu/48658 |
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| Lowenberg-DeBoer, James; Boehlje, Michael. |
| This analysis used simulation to compare the cost of intergenerational transfer of farm estates under the pre-1981 tax rules and the Economic Recovery Tax Act of 1981 (ERTA) provisions. ERTA reduces transfer costs for almost all the estates considered. Large estimates tend to benefit more than small estates if they qualify for use valuation or it they are large enough to be affected by the reduction in tax rates. ERTA does not create new forces for change in U.S. agriculture, but it tends to strengthen the tendency toward larger farm size and favor those who already own farm resources. |
| Tipo: Journal Article |
Palavras-chave: Political Economy. |
| Ano: 1985 |
URL: http://purl.umn.edu/29988 |
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| Lambert, Dayton M.; Lowenberg-DeBoer, James; Malzer, Gary L.. |
| Site-specific application of manure has the potential to improve crop production and environmental quality. If manure is applied where it is needed, in the quantity required by the crop, over application, with attendant runoff and leaching problems can be reduced. To implement this approach growers need site-specific crop response information. Increasing availability of site-specific yield information offers a way to estimate such crop responses. The objective of this study is to develop a methodology for estimating site-specific response of corn and soybeans to manure given soil test information, and to use that methodology to analyze an on-farm manure management trial conducted near Sleepy Eye, Minnesota. Both quantity and quality of the crop is... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 2004 |
URL: http://purl.umn.edu/20091 |
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| Registros recuperados: 31 | |
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