Now showing items 1-10 of 2840
Bioeconomics of managing the spread of exotic pest species with barrier zones
(Ecological Society of America, 1998-08)
Exotic pests are serious threats to North American ecosystems; thus, economic analysis of decisions about eradication, stopping, or slowing their spread may be critical to ecosystem management. We present a model to analyze ...
Preschoolers' Food Handling Skills - Motor Development
(Virginia Cooperative Extension Service, 1984-04)
Food activities provide the chance to learn many skills useful for a lifetime. For the preschooler , food handling skills need to be tailored to muscular development and coordination. The activities listed are for two to ...
An Electric Water System for the Farm
Published bulletin on the advantages of rural electrification for farm homes.
Project 10 Image - VA Tazewell County - 1946-04-11
(Virginia Tech, 1946-04-11)
Westmoreland (soil) topography. Foreground - stream - wet area. Linside semi-drained up to second line in corn field. Rock pile. Hayter colluvial soil - draw on right. Stomy colluvial solid - ridge to tree line. Muskingum ...
Project 10 Image - VA Carroll - 1945-05-08
(Virginia Tech, 1945-05-08)
Rear view of International Harvester Company A-Model, 2-disc plow constructing terrace (note side move action upon hitting small stone).
Project 10 Image - VA Bedford - 1960-12-20
(Virginia Tech, 1960-12-20)
After weir construction. Upstream veiw taken from road above culvert.
Measuring the environmental impacts of economic change: The case of land degradation in Philippine agriculture
(Madison, Wisc.: University of Wisconsin-Madison. Department of Agricultural Economics, 1995)
We evaluate the onsite land degradation effects of economic changes occurring both within agriculture and elsewhere in the Philippine economy, simulated with the APEX applied general equilibrium model. We derive changes ...
The transfer of agricultural technology and the development of small-scale farming in rural Africa: Case studies from Ghana, Sudan, Uganda, Zambia and South Africa
(Kluwer Academic Publishers, 1998)
This paper examines the situation of agricultural development in African countries, specifically cases in Ghana, Sudan, Uganda, Zambia, and South Africa. The author asserts that inadequate institutional support and a lack ...
Indigenous soil and water conservation in Africa
(London, UK: International Institute for Environment and Development (IIED), 1991)
Many parts of Africa are experiencing annual population growth rates between 2 and 4%, degradation of the natural resource base, recurrent droughts and a growing dependence on food aid as well as the import of cereals to ...
Project 10 Image - VA Montgomery County - 1947-04-29
(Virginia Tech, 1947-04-29)
View of approaching pulverator plow (rotary moldboard) sub base operates in 3" furrow in foreground, to depth of 4" - Total depth of tillage 7".