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Showing items 45397 through 45405 of 73421.Since the publication of the Report of the Brundtland Commission (Our Common Future) in 1987, and the consequent Earth Summit on sustainable development, global attention on natural resource scarcity and degradation has been increasing, because of climate change and rising food and energy prices.
Spatial patterns in socioeconomic data reveal issues and trends that would otherwise be missed by data aggregation to political or other units. Geographic Information System (GIS) tools provide display and analysis capabilities that are underutilized by many social scientists.
Although soil fertility is recognized as a primary constraint to agricultural production in developing countries, use of fertilizer in Sub-Saharan Africa is declining. Smallholder farmers still rely heavily on livestock manure for soil fertility management.
Although soil fertility is recognized as a primary constraint to agricultural production in developing countries, use of fertilizer in Sub-Saharan Africa is declining. Smallholder farmers still rely heavily on livestock manure for soil fertility management.
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