Report of the First Meeting of the Ad Hoc Working Group in Agricultural Planning

Informa sobre la reunion que tuvo por objetivo la formulacion de estrategias de desarrollo para el sector agricola en la region.

Agricultural statistics of the Caribbean countries

Includes bibliography

Anthropogenic impacts on mineral weathering: A statistical perspective

Correspondence Analysis was adopted as tool for investigating the statistical structure of hydrochemical and weathering datasets of groundwater samples, with the main purpose of identifying impacts on mineral weathering caused by anthropogenic activities, namely fertilizing of farmlands. The hydrochemical dataset comprised measured concentrations of major inorganic compounds dissolved in groundwater, namely bicarbonate, silica (usually by-products of chemical weathering), chloride, sulphate and nitrate (typically atmospheric plus anthropogenic inputs). The weathering dataset consisted of calculated mass transfers of minerals being dissolved in loess sediments of a region located in SW Hungary (Szigetvár area), namely Na-plagioclase, calcite and dolomite, and of pollution-related concentrations of sodium, magnesium and calcium. A first run of Correspondence Analysis described groundwater composition in the study area as a system of triple influence, where spots of domestic effluents-dominated chemistries are surrounded by areas with agriculture-dominated chemistries, both imprinted over large regions of weathering dominated chemistries. A second run revealed that nitrification of N-fertilizers is promoting mineral weathering by the nitric acid reaction (anthropogenic pathway), in concurrence with the retreating of weathering by carbonic acid (natural pathway). It also indicated that dolomite and calcite are being players in a dedolomitization process driven by dissolution of gypsum fertilizers and nitrification of N-fertilizers. © 2013 Elsevier Ltd.

Directory of agricultural producers

Publicación trilingüe

Informe del Seminario Regional sobre Sistemas Ambientales y Estrategias para Ampliar la Frontera Agropecuaria en América Latina = Report of the Regional Seminar on Environmental Systems and Strategies for Extending the Agricultural Frontier in Latin America

Contiene los antecedentes y el resumen de los debates del seminario que tuvo como propósito hacer un aporte a la ejecución del proyecto del mismo nombre cuyo objetivo básico es propiciar metodologías viables que tiendan a disminuir el costo ecológico de las transformaciones y a formar silvoagrosistemas sustentables, y que puedan ser utilizados por los planificadores y encargados de proyectos de desarrollo agrícola y regional en áreas de expansión de frontera agropecuaria.

Caracterização espectral e espacial de áreas infestadas por nematóides e Migdolus fryanusem em cultura canavieira

Pós-graduação em Ciências Cartográficas - FCT

Economía política de la planificación de los sectores agrícola y rural en las sociedades del Caribe = Polítical economy of agricultural and rural sector planning in Caribbean societies

Incluye Bibliografía

Identificação do teor de nitrogênio foliar em cana-de-açúcar no estágio inicial de crescimento utilizando infravermelho próximo e sistemas inteligentes

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estimação de variáveis físico-químicas de solo por espectroscopia no visível e no infravermelho próximo através de sistemas inteligentes

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Conservação da agrobiodiversidade por agricultores de pequena escala em Mato Grosso - Brasil

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Inputs for the governments of Latin America and the caribbean for formulating a regional stance for the Rio +20: note by the secretariat

Spanish version available at the Library

Informe del Seminario Regional sobre Expansión de la Frontera Agropecuaria y Medio Ambiente en América Latina = Report of the Regional Seminar on the Expansion of the Agricultural Frontier and the Environment in Latin America

Informe del Seminario efectuado para analizar las caracteristicas de la expansion de la frontera agropecuaria en la region y su relacion con el estilo de desarrollo predominante, resaltando los aspectos ambientales y sociales del proceso, para recomendar politicas de desarrollo optativas que permitan realizar el proceso de expansion aludido minimizando el costo ambiental y social. Incluye lista de participantes y de documentos presentados.