693 research outputs found
Clay Mineral transformations and heavy metal release in paddy soils formed on serpentinites in eastern Taiwan
No full textPlant-water relations in an Andean landscape: Modeling the effect of irrigation on upland crop production
No full textIn the inter-Andean valleys of northern Ecuador, irrigation systems have long been used to minimize drought risk and secure the production of food crops during dry periods. However, not all Andean communities have access to irrigation water. Increasing population pressure has forced many peasant farmers to move higher up the volcanic slopes and cultivate more marginal land under rainfed conditions. In the SANREM CRSP research site of Cotacachi, local community members and officials of the local water authorities (juntas de agua) have been seeking to expand existing irrigation systems to a wider area. University of GeorgiaÕs researchers Franz Zehetner and Bill Miller analyzed the potential benefits to crop production that such expansion could bring about in different zones of the Cotacachi area that currently do not have access to irrigation water. The scientists used crop growth modeling to quantify the improvement of wet-season and dry-season maize production that would occur if irrigation water was available
Towards sustainable crop production in Andean communities, Ecuador: An assessment of the soils' nutrient status
No full textThe volcanic ash soils of northern Ecuador have supported agricultural activities for thousands of years; however, at the dawn of a new millennium, in the peasant communities of Cotacachi, where crop yields have been declining over the past decades, the sustainability of agricultural production seems to be threatened. Within the SANREM CRSP, researchers Franz Zehetner and Bill Miller analyzed the fertility status of the soils in the Cotacachi area and identified limiting factors to crop growth in different zones of the area. The researchers used crop growth modeling to examine the long-term effects of nitrogen fertilization and residue management on maize yields, and to identify possible avenues for restoring and maintaining soil fertility as the basis of sustainable agricultural production
Internationaler Klimaschutz im Rahmen des Kyoto Protokolls
No full textDer Artikel erörtert Klimaschutz als Beispiel der Weiterentwicklung des internationalen Umweltrechts von einem Recht der individuellen Gefahrenabwehr zu einm umfassenden Umwelterhaltungsrech
Lösung internationaler Wasserkonflikte durch enge Kooperation von Rechts- und Ingenieurwissenschaften
No full text
Describiendo el paisaje: Geología, clima, suelos y hidrología en el área de Cotacachi
No full textDescription of geology, climate, soils, and hydrology in the Cotacachi areaAvailable in SANREM office, E
Unravelling the pedogenetic development of forest soils in Northern Patagonia, Argentina
No full texthttp://dx.doi.org/10.13039/501100005908 Bundesministerium für Ernährung und Landwirtschafthttp://dx.doi.org/10.13039/501100010771 Federal Agency for Agriculture and Foo
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