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Autor: Couper, D.C.

In agriculture, surveying is required to prepare topographical maps that indicate variations in the level of the land's surface. Topographical maps are necessary as a base for the preparation of research station maps which include layout of field, buildings, roads, and soil conservation measures.


Couper, D.C.[Land survey for research stations: IITA research guide, No. 1]Land survey for research stations: IITA research guide, No. 1
Whittome, M.P.Spencer, D.Bayliss-Smith, T.[IITA and ILCA onfarm alley farming research: lessons for extension workers]IITA and ILCA onfarm alley farming research: lessons for extension workers

Reith, J.Dubovky, O.Muthoni, Francis K.Kimaro, A.Swai, E.[Spatial assessment of land degradation in semi-arid zone of central Tanzania]Spatial assessment of land degradation in semi-arid zone of central Tanzania

The Ethiopian highlands are characterized by land degradation, erosion and low productivity, while they serve as the water towers of the region. It is estimated that over 1.9 billion tons of soil are lost from the highlands of Ethiopia each year, with the soil loss ranging from 5 to 300 t/ha/year...


Gebresilase, Y.Amede, Tilahun[Investing in land and water management practices in the Ethiopian highlands]Investing in land and water management practices in the Ethiopian highlands

Frontier areas in Latin America have been characterized by land speculation, abandonment and exploitation. This paper analyzes a frontier cattle ranching area in the savanna where intensification has occurred in spite of land speculation. A whole farm livestock production model is used to quantif...


Smith, J.Cadavid Herrera, JVRincón Castillo, A.Vera, Raúl R.[Land speculation and intensification at the frontier: a seeming paradox in the Colombian savanna]Land speculation and intensification at the frontier: a seeming paradox in the Colombian savanna

The International Center for Tropical Agriculture (CIAT), in collaboration with our national research partners, has been working in Africa for the last 30 years. Our cutting-edge science helps policy makers, private sector, scientists, civil society, and farmers respond to the most pressing chall...


International Center for Tropical Agriculture[CIAT in Africa: Science for Impact]CIAT in Africa: Science for Impact
Autor: Couper, D.C.

Research scientists must have access to field records to ensure that their experimental treatments are neither masked nor affected by previous land usage. Research fields must be identified on the ground and accurate records kept of all operations and treatments carried out. Several procedures ha...


Couper, D.C.[Farm records and work planning on agricultural research farms]Farm records and work planning on agricultural research farms

The impact of human endeavours on the environment in the struggle to eke out a living through crop and animal agriculture is examined in a holistic context. Analyses focus on all the sources of pressure that modify the vegetation cover of rural Africa, including the effects of fires and burning o...


Leeuw, P.N. deReid, Robin S.[Impact of human activities and livestock on the African environment: An attempt to partition the pressure]Impact of human activities and livestock on the African environment: An attempt to partition the pressure

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