Livestock in south-east Asia are used for a wide variety of purposes. In many regions, there is an increasing demand for animal protein but, at the same time, increasing population pressure is pushing livestock on to more marginal lands. These marginal lands are generally uplands where soils are acid and infertile.

This paper examines the conversion of Indonesia’s natural forests to timber and tree crop plantations, notably oil palm. The principal aims are to understand the impact of this process on natural forest and on forest-dwelling people, and to establish whether past and present policies governing this process are meeting their objectives.

The potential of Crotalaria ochroleuca check for this species in other resources as a green manure crop was evaluated in a series of on-station and on-farm trials on reddish kaolinitic loam and sandy clay loam soils in Uganda. Production of the green manure by intercropping Crotalaria with either maize or beans was found to be feasible with little reduction in food crop yield and a mean Land Equivalent Ratio of 1.3. The large amounts of N in the Crotalaria indicates that large quantities of N were biologically fixed.

This audiotutorial unit (cassette, printed script, 139 color slides, study guide, self-evaluation test), prepared by the Communications Support Unit at CIAT, is available for use with a manually or automatically synchronized slide projector/cassette tape recorder. Each unit is available from the Distribution Office at a cost of US$$50; photocopies of the study guide alone can be obtained from the Bean Information Center. Hybridization or crossing constitutes the principal means for genetic improvement of plants.

Se cuantificó la biodiversidad, abundancia y biomasa de la macrofauna en diferentes usos del suelo utilizando la metodología propuesta por el programa Tropical Soil Biology and Fertility (TS.B.F.).
La mayor biodiversidad la presento el cacaotal (47 u.-t.), mientras que el tratamiento con mulch tiller tuvo la mayor abundancia (122 ind/0.062 m2) y el sistema de siembra directa la mayor biomasa (5.44 g/0.062 m2).

Our goal is to improve the targeting of investments in agricultural and NRM research and development

through economic and geographic analysis. Our objective is to develop and provide analysis, information and tools to improve decisions about where, when and how innovations can be implemented to enhance rural livelihoods in a sustainable and equitable manner.

Our goal is to improve the targeting of investments in agricultural and NRM research and development

through economic and geographic analysis. Our objective is to develop and provide analysis, information and tools to improve decisions about where, when and how innovations can be implemented to enhance rural livelihoods in a sustainable and

equitable manner.