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| Lynch, Lori; Carpenter, Janet. |
| We examine if the farm sector has a critical mass. If a critical mass of farmland acres is needed to sustain a viable agricultural sector, agriculture profits may decline once a region has dropped below this threshold, causing the rate of farmland loss to accelerate. Agricultural census and population and housing census data were assembled as a panel by county and five-year time periods for the 50-year period (1949-1997) for six Mid-Atlantic States. Three random effects models were estimated. The general model indicates that having less than 189,240 harvested cropland acres accelerates a county's rate of farmland loss. As acres increase by 10% (5,400 acres), the 5-year loss rate decreases from the predicted 7.9% to 7.67%. As sales and percent change... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Land Economics/Use. |
| Ano: 2002 |
URL: http://purl.umn.edu/28552 |
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| Kelly, Valerie A.; Carpenter, Janet; Easterling, Tom; Kone, Moctar; McCornick, Peter G.; McGahuey, Mike. |
| Recognizing that science and technology research (S&T) is one of many inputs into the broader development process, USAID/Mali, via its Initiative to End Hunger in Africa, requested an assessment of the current S&T situation in Mali. USAID asked the assessment team to produce a comprehensive strategic options plan for a Malian S&T agenda that would identify priority short-term actions to stimulate uptake of S&T results likely to make significant contributions to the attainment of Mali’s broad development goals, while simultaneously developing a coherent longer-term action plan to maintain and improve the human, physical, and financial capital needed to generate future streams of S&T results. The scope of work for the assessment team... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Mali; Growth; Technology; Food security; Agricultural and Food Policy; Food Security and Poverty; Research and Development/Tech Change/Emerging Technologies; Q16; Q18. |
| Ano: 2005 |
URL: http://purl.umn.edu/57069 |
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| Lynch, Lori; Carpenter, Janet. |
| Ongoing farmland loss has led county planners to ask "is there a critical mass of farmland needed?" to retain a viable agricultural sector. This study examines whether counties lost farmland at a faster rate if the number of agricultural acres fell below a critical threshold. Results from six Mid-Atlantic states over the period 1949 to 1997 indicate that counties with fewer agricultural acres lost farmland at a faster rate. However, after splitting the study period into two time segments (1949-1978 and 1978-1997) and modeling separately, this result was not found for the later time period, suggesting a uniform critical mass level may not exist. Population growth in a county accelerated farmland loss over all time periods. |
| Tipo: Journal Article |
Palavras-chave: Agribusiness. |
| Ano: 2003 |
URL: http://purl.umn.edu/31348 |
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| Lynch, Lori; Carpenter, Janet. |
| Spatial regulations can restrict chemical use more efficiently by linking benefits to the costs. California has instituted such a spatially based regulation of an agricultural fumigant to meet air quality standards. We examine the implications of alternative allocation mechanisms: use allocated based on a first come, first served basis; on quotas linked to historical use; and on the highest-value use. Although there are distributional impacts by crop, the overall change in aggregate value from using a highest value use mechanism rather than a first come, first served approach is estimated to be less than nine million. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 2001 |
URL: http://purl.umn.edu/28576 |
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