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A água na produção agrícola | Water in agricultural production
1978
Reichardt, Klaus
[Water and cross-border disputes] | Agua y conflictos transfronterizos Texte intégral
2008
Mestre, E.
Necessidade de água para irrigaçaõ | Need for irrigation water
1983
Matute, E.
Regeneración de agua y suelo y sus efectos en la alimentación | Reclamation of soil and water and its effect on food
1988
Antúnez de Mayolo R., Santiago E. (Santiago Erik Antúnez de Mayolo Rynning)
[Water markets: a new instrument for the public management of water] | Mercados de agua: un instrumento novedoso en la gestión pública del agua Texte intégral
2008
Maestu, J. | Sánchez Tamarit, S. | Gómez Ramos, A.
Abastecimiento de agua por gravedad para poblaciones rurales dispersas : experiencias con nuevas tecnologias, el caso de Poccontoy y Orcconmarca Texte intégral
Mendelsohn, Robert | Dinar, Ariel | Huang, Jikun | Wang, Jinxia
This paper presents new experiences in the province of Andahuaylas, in the Andes of Peru, in a bid to help solve the problem of water supply in rural scattered areas. The central part of the document consists of a study that describes and analyzes the process by which 5 small areas in a scattered rural steeply sloping side of a mountain managed to acquire a sustainable water supply operated by gravity. The study includes 3 chapters. The first chapter examines the water issues in the communities, what solutions developed by the commoners to stock up on water, what are the drawbacks of the traditional system of their drinking water system. The second chapter describes technical aspects of the project, explaining how the technologies employed were the product of the physical and social environment. The third chapter describes the community participation during and after the project.
Afficher plus [+] Moins [-]Mercados de agua en Colombia | Water markets in Colombia Texte intégral
2022
Vásquez Corzo, William Alexander | Pedraza Nájar, Ximena Lucía
La implementación de los mercados de agua en Colombia se crea como estrategia para reducir el déficit de infraestructura y cobertura en la prestación del servicio de agua potable y saneamiento básico, pero se esconde a simple vista un gran negocio de jugosas ganancias para las grandes corporaciones en el futuro con las estrategias de comercialización, privatización y financierización del agua que pueden representar la limitación del derecho fundamental del acceso al agua potable en cantidad suficiente, calidad optima y de forma eficiente. El negocio puede llegar a la venta de derechos del líquido en su lugar de producción sin que medie la propiedad de la tierra. Mediante una búsqueda en bases de datos y en la red se realiza un análisis de contexto y se miran algunos factores que pueden influir en la profundización del negocio del agua en Colombia y la instauración de la fase de bursatilización o mercados de futuros de agua. Los gobiernos de Colombia desde siempre ha sido partidarios de las imposiciones en materia de recursos que le son “sugeridas” desde los organismos multilaterales y en esa medida su ordenamiento jurídico y ambiental se pliega a esos designios; hace tiempo el concepto de mercados de agua se aplica en el país y amplia la cobertura del negocio hídrico para los privados y grandes capitales. Queda la tarea de profundizar en los temas conexos del contexto de mercados de agua con metas más ambiciosas. | The implementation of water markets in Colombia was created as a strategy to reduce the infrastructure and coverage deficit in the provision of drinking water and basic sanitation services, but a great deal of juicy profits for large corporations is hidden in plain sight. large corporations in the future with the strategies of commercialization, privatization and financialization of water that may represent the limitation of the fundamental right of access to drinking water in sufficient quantity, optimal quality and continuously; the business can reach the sale of rights to the liquid in its place of production without ownership of the land. Through a search in databases and in the network, a context analysis is carried out and some factors that can influence the deepening of the water business in Colombia and the establishment of the securitization phase or water futures markets are looked at. The governments of Colombia have always been in favor of impositions on resources that are "suggested" from multilateral organizations and to that extent the legal and environmental system bends to those designs, The concept of water markets has been applied in the country for a long time and broadens the coverage of the water business for private companies and large capitals. The task remains to delve into related issues in the context of water markets with more ambitious goals. | Especialización
Afficher plus [+] Moins [-]Tilapia growth in irrigation water reservoir and water parameters evaluation | Tilápia em reservatório de água para irrigação e avaliação da qualidade da água Texte intégral
2022
Cardoso Filho, Ruy | Campeche, Daniela F. B. | Paulino, Renata V.
This research was carried out aiming to evaluate tilapia production in irrigation water reservoir, improving the productivity in small scale family farms. Tilapia juveniles (3.600) with 8.10 g of initial weight were put in a water reservoir with useful volume of 1,170 m3 and bred for seven and half months. Fish were fed with commercial feed specific for each level. The feed was given 3 times a day, in the amount of 5% of its total biomass. In order to adjust feed amount, fish were weighed every 20 days. At the same time, local water analyses were made and water samples were collected for laboratory analyses. At the end of the trial growth parameters were measured. Average final weight was of 535 g and total final biomass was of 18.489 kg ha-1. Water quality parameters were within optimal values for fish culture. Fish production in the water reservoirs for irrigation is viable for the small scale farmer as a way to increase water, area and family productivity. | Este trabalho foi realizado com o intuito de avaliar o potencial de cultivo de tilápia em reservatório de água para irrigação, aumentando a produtividade em pequenas propriedades familiares. Foram utilizados 3.600 alevinos de tilápia tailandesa, com peso inicial de 8,10 g. Os alevinos foram colocados em um reservatório de água para irrigação, com volume útil de 1.170 m3. O período de cultivo foi de 26/12/2007 a 01/08/2008. Os alevinos foram alimentados com ração comercial extrusada com porcentagem de proteína recomendada para cada fase de crescimento. O arraçoamento restrito foi de três vezes ao dia, com a proporção de 5% da biomassa total. Para o ajuste do fornecimento de ração, foram realizadas biometrias a cada 20 dias. Em cada biometria foram realizadas análises locais dos parâmetros de qualidade da água e amostras da água foram coletadas para análise posterior em laboratório. Ao final do experimento foi realizada a avaliação do desempenho zootécnico dos animais. O peso final médio foi de 535 g e a biomassa final de 18.489 kg ha-1. Os parâmetros de qualidade da água estavam dentro da faixa ótima para cultivo. A produção de peixes em reservatórios de água para a irrigação é viável.
Afficher plus [+] Moins [-]9th International Rainwater Catchment Systems Conference | 9a Conferência Internacional sobre Sistemas de Captação de Agua de Chuva | Ninth International Rainwater Catchment Systems Conference | Nona Conferência Internacional sobre Sistemas de Captação de Agua de Chuva
1999
Gnadlinger, Johann
"Rainwater catchment: an answer to the water scarcity of the next milennium"--Page [5].
Afficher plus [+] Moins [-]Soil conservation and productivity | Soil and water conservation to prevent food shortage | Conservacion de suelos y agua para prevenir deficit de alimentos
1987
Pla Sentís, Ildefonso
