Discusses the Development of alley cropping and alley farming, uses of trees and shrubs in fallow systems, hedgegrow establishment and management and benefits for crop production and livestock. Examines the economic aspects and social acceptability of alley farming.

The humid tropics are exposed to an unprecedented modernization of agriculture involving rapid and highly-mixed land-use changes with contrasted environmental impacts. Afforestation is often mentioned as an unambiguous solution for restoring ecosystem services and enhancing biodiversity. One consequence of afforestation is the alteration of streamflow variability controlling habitats, water resources and flood risks. We demonstrate that afforestation by tree planting or by natural forest regeneration can induce opposite hydrological changes.

This proceeding report is divided in three sessions. In the first session papers on African forage plant genetic resources in Zimbabwe, Botswana, Malawi and the PANESA region are presented. The second session discusses forage germplasm evaluation. In this session experiences of ILCA, Tanzania, Mauritius, Uganda, Malawi, Ethiopia and Kenya are presented. Species involved in the studies included Brachiaria, Cynodon, Trifolium, Lablab, Zornia, Stylosanthes and Crotalaria. The third session deals with extensive livestock production systems.

Presentación de la dra. Aracely Castro, líder de suelos para LAC del CIAT, durante la primera Casa Abierta de 2013, dirigida a decanos y docentes.

AEPS, Agricultura Específica por sitio, es un conjunto de métodos y herramientas que permiten colectar información de experiencias productivas comerciales, analizar datos con métodos novedosos y generar información que le servirá a productores, asistentes técnicos y entidades del sector agrícola, para tomar mejores decisiones sobre donde sembrar, cuando sembrar, que sembrar y que prácticas de manejo aplicar, cuando se cuenta con ciertas condiciones específicas de clima y suelo.

The technological and institutional requirements needed for a broader distribution and adoption of new cropping technologies are indicated, using as example the case of changes in land use by soybean growers of the Brazilian Cerrados. In Brazil, soybean had contributed significantly to economic development, accounting for 8 percent of total exports. The current survey was conducted on a red-yellow Latosol in southeastern Minas Gerais. In 1986, 72 percent of this area was under annual crops and 11 percent under pastures.