Статьи
Всего статей в данном разделе : 4
Опубликовано на портале: 21-02-2005
C. 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).
Опубликовано на портале: 24-11-2003
Octavio 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: 24-11-2003
Cynthia 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.
Студенческие дружины охраны природы [статья]
Опубликовано на портале: 28-02-2005
Сергей Германович Мухачев
Социологические исследования.
2003.
№ 1.
С. 141-142.
В заметке прослеживается динамика природоохранного молодежного движения. Она отражает
как внутренние интенции движения, так и внешние воздействия, - взаимоотношения с
административно-бюрократическим аппаратом и распад социалистической экономики. Дружины
и объединения дружин можно также рассматривать как структурные единицы, с точки зрения
достижения оптимальной "производительности труда".
|
|