Journal of Agricultural and Applied Economics
Опубликовано на портале: 21-02-2005C. Richard Shumway, Rayanne R. Chesser Journal of Agricultural and Applied Economics. 1994. Vol. 26. No. 1. P. 224-240.
The impact of an ad valorem pesticide tax on cropping patterns and pesticide use was examined In the South Central Texas Crop Reporting District. Output supply equations were econometrically estimated and used in the simulation. A 25 percent tax on pesticide was estimated to have major impacts on cropping patterns and on pesticide use. Assuming other input and output prices were unaffected, the supply of one important crop would fall by more than half. Demand for some of the highly soluble and persistent pesticides, which present the greatest threat to groundwater quality, would also decrease substantially (some as much as 50 percent).
Poisson Count Models to Explain the Adoption of Agricultural and Natural Resource Management Technologies by Small Farmers in Central American Countries [статья]
Опубликовано на портале: 24-11-2003Octavio A. Ramirez, Steven D. Shultz Journal of Agricultural and Applied Economics. 2000. Vol. 32. No. 1. P. 21-33.
Evaluations of the factors influencing the adoption of agricultural and natural resource management technologies among small farmers in developing countries have been mostly limited to qualitative discussions or simple descriptive statistics resulting in superficial anti inconclusive findings. This study introduces the use of Poisson Count Regressions as a statistically appropriate procedure to analyze certain common types of adoption data, It uses them to assess the impact of key socio-economic, bio-physical, and institutional factors on the adoption of integrated pest management, agroforestry, and soil conservation technologies among small farmers in three Central American countries: Costa Rica, Panama and El Salvador.
Tradable Permits for Controlling Nitrates in Groundwater at the Farm Level: A Conceptual Model [статья]
Опубликовано на портале: 24-11-2003Cynthia L. Morgan, Jay S. Coggins, Vernon R. Eidman Journal of Agricultural and Applied Economics. 2000. Vol. 32. No. 2. P. 249-258.
Nitrate contamination of municipal and domestic well water supplies is becoming an increasing problem in many rural and urban areas, raising the cost of providing safe drinking water. The objective of this paper is to describe a marketable permit scheme that can effectively manage nitrate pollution of groundwater supplies for communities in rural areas without hindering agricultural production in watersheds. The key to implementing this scheme is being able to link nitrate leaching from nitrogen fertilizer applied to crops at a farm to nitrate levels measured at a drinking water well.