Papers by Abelardo Rodriguez Lopez
Marketing of goat and sheep skins in highland Balochistan, Pakistan
Small Ruminant Research, Dec 1, 1993
... Rodríguez, 1992A. Rodríguez, Social and economic considerations of sheep and goat production ... more ... Rodríguez, 1992A. Rodríguez, Social and economic considerations of sheep and goat production and marketing in Balochistan, Pakistan, Proceedings of the USAID Workshop on Small Ruminants:Production Systems for Sustainability New Delhi, February 2829 (1992), p. 12. ...
Anexo II. Bibliografía
Desarrollo y perspectivas de los sistemas de andenería de los Andes centrales del Perú
Abanto, C. y Arce A.2000 Evaluación socioeconómica de la rehabilitación del canal de Quishuarpata... more Abanto, C. y Arce A.2000 Evaluación socioeconómica de la rehabilitación del canal de Quishuarpata, comunidad de Chamana, distrito de Ollantauambo. Informe Interno Cusichaca Trust, Andahuaylas. Albarracín-Jordán, J1996 Tiwanaku: Arqueología regional y dinámica segmentaria. Editores Plural, La Paz, Bolivia. Alfaro, J.1986 “Conservación de suelos y desarrollo rural en los andes peruanos”, En: J. Portocarrero (ed.). Andenería, conservación de suelos y desarrollo rural en los Andes peruanos. Asoci..
Marketing of goat and sheep skins in highland Balochistan, Pakistan
Small Ruminant Research, 1993
... Rodríguez, 1992A. Rodríguez, Social and economic considerations of sheep and goat production ... more ... Rodríguez, 1992A. Rodríguez, Social and economic considerations of sheep and goat production and marketing in Balochistan, Pakistan, Proceedings of the USAID Workshop on Small Ruminants:Production Systems for Sustainability New Delhi, February 2829 (1992), p. 12. ...
A wheat grazing systems model for the US Southern Plains: Part I—Model description and performance
Agricultural Systems, 1990
A model was developed to simulate production of wheat and stocker cattle. A mechanistic plant mod... more A model was developed to simulate production of wheat and stocker cattle. A mechanistic plant model (CERES-Wheat, Ritchie & Otter, 1985) was combined with empir.
Capítulo 6. Experiencias de proyectos de desarrollo rural en sistemas de andenería
Desarrollo y perspectivas de los sistemas de andenería de los Andes centrales del Perú
INTRODUCCIÓN Las experiencias en la rehabilitación en los ochenta se basaron en la premisa de rec... more INTRODUCCIÓN Las experiencias en la rehabilitación en los ochenta se basaron en la premisa de recuperar el uso de las infraestructura ambiental y cultural y contribuir a incrementar la producción agrícola de las comunidades de bajos recursos, predominantemente en el sur de los andes peruanos y así contribuir al desarrollo rural (De la Torre y Burga, 1986). Estas experiencias evolucionaron hacia el manejo integrado de cuencas y micro-cuencas, o bien el manejo de la interacción entre las activi..
Challenges for the agricultural sector in develping Mediterrean counties
Challenges for the agricultural sector in develping Mediterrean counties , Challenges for the agr... more Challenges for the agricultural sector in develping Mediterrean counties , Challenges for the agricultural sector in develping Mediterrean counties , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی
Capítulo 3. Tecnología de construcción de sistemas de andenería y el patrimonio vivo
Institut français d’études andines eBooks, 2009
Stochastic Modeling of Short‐Term Cattle Operations
American Journal of Agricultural Economics, Feb 1, 1988
A risk-neutral stochastic dynamic programming model was used to test the certainty equivalence (C... more A risk-neutral stochastic dynamic programming model was used to test the certainty equivalence (CE) property in sequential decisions over a single season in a northeastern Colorado yearling operation. Stochastic rainfall represented risk in forage production, and stochastic steer ...
Evaluación De La Productividad Primaria Neta Arbórea Potencial y La Arquitectura Vegetal Para Una Mejor Producción Caprina en El Departamento De Piura
Zonas Áridas, 2005
Los bosques secos de la costa norte del Peru, llamados “secos” debido a la baja y estacional prec... more Los bosques secos de la costa norte del Peru, llamados “secos” debido a la baja y estacional precipitacion que presentan, han sido desde hace por lo menos trescientos anos escenario de una alta produccion de ganado caprino, tanto para aprovechamiento carnico como lacteo y sus derivados. Dichos ecosistemas resultan ser adecuados para la ganaderia caprina: la alta variabilidad climatica dada por la aleatoriedad en la secuencia de anos secos y anos humedos (de alta precipitacion causada por el Fenomeno El Nino o ENSO - El Nino Southern Oscillation), no permite la formacion de un estrato herbaceo perenne que asegure un desarrollo sostenible para la ganaderia de ovinos o vacunos. El caprino – especialmente la “cabra criolla” que encontramos en Piura – se alimenta eficazmente y a lo largo de todo el ano de los estratos arbustivo y arboreo del bosque y se ha convertido por ello en el componente mas importante de la economia familiar del poblador del “despoblado” piurano. La produccion caprina es llevada a cabo principalmente mediante la trashumancia, que es un sistema rentable a corto plazo debido a los bajos costos de manejo y de produccion (Dios, 1998). Sin embargo, esta actividad, llevada a cabo por el pequeno campesino de ingresos economicos muy bajos, no esta respaldada por un adecuado manejo del recurso bosque (entre otros), lo cual genera que los ingresos percibidos por las familias sean largamente insuficientes e inestables. Por ello los pobladores recurren a una excesiva tala y venta de lena de algarrobo ( Prosopis sp. ), compitiendo asi con su propio medio para lograr su subsistencia y generando la desertificacion de la zona.
Capítulo 1. Contexto prehispánico del desarrollo de los andenes en los Andes Centrales
INTRODUCCIÓN A nivel global, los Andes Centrales constituyen una de las áreas nucleares claves de... more INTRODUCCIÓN A nivel global, los Andes Centrales constituyen una de las áreas nucleares claves de interacción cultural que hicieron posible el desarrollo de las civilizaciones. Desde hace 10,000 años el cultivo de plantas y luego el pastoreo de camélidos complementaron el sustento basado en la caza, pesca y recursos marinos. Desde hace 6,000 años la vida sedentaria llevó al desarrollo de la infraestructura agrícola. Las condiciones geológicas y el impacto de los cambios de clima sobre el medi..
Small Ruminant Research, Mar 1, 1993
Marketing and processing of small ruminants in highland Balochistan, Pakistan. Small Rumin. Res.,... more Marketing and processing of small ruminants in highland Balochistan, Pakistan. Small Rumin. Res., Most small ruminants in highland Balochistan are produced under transhumant and nomadic pastoralist systems. This study investigated the livestock and meat marketing practices in this area through interviews with producers, village dealers, wholesalers, commission agents, butchers and consumers. It was confir:aaed that producers had little knowledge about market forces and quality of livestock, and this limiled their ability to increase income. However, they incorporated liveweight in their perception of livestock price per unit of weight. The average weight of sheep was 26.4 kg and for goat 21.8 kg, with estimated farm-gate prices of Rs 512 and Rs 480 (US$ 23.50 and 22.00, respectively). Average prices paid by the consumers were Rs 750 (US$ 34.40) for sheep and Rs 682 (US$ 31.30) for goat. Correspondingly, services of intermediaries in the marketing chain represented 32% and 30%, respectively, of the price paid by consumers. Meat grading was absent but there was government regulation of retail prices. Consumers did not have ways to convey their degree of dissatisfaction to producers th:7ough intermediaries in the marketing chain. Most services could be improved for the benefit of consumers and producers: overall volume of the market could be higher, the quality of the meat could be more uniform and some marketing costs could be decreased.
Capítulo 7. Aspectos socioeconómicos en la rehabilitación de sistemas de andenería
Institut français d’études andines eBooks, 2009
Agradecimientos
Institut français d’études andines eBooks, 2009
Prefacio
Institut français d’études andines eBooks, 2009
Capítulo 6. Experiencias de proyectos de desarrollo rural en sistemas de andenería
Institut français d’études andines eBooks, 2009
Journal of Arid Environments, Sep 1, 1992
Farmers and camel herders in the arid highlands of western Pakistan are generally disadvantaged e... more Farmers and camel herders in the arid highlands of western Pakistan are generally disadvantaged economically. The results of a survey of highland farmersindicatethat theyownon average 5' 2 camels,the majorityofwhichareof working age. Camelsare a major financial asset for farmers and 57 percent of farmers/herders expect to be using such animal draft power in 10 years time. Camels are valued for their versatility of agricultural use and are particularly preferredovertractorsfor sowing operations.In casesofanimalsicknessfarmers areusuallydependenton homeremediesasveterinarians are not easily available. * Single copies of all lCARDA publications quotedin this papermaybe obtained on request,withoutcharge from lCARDA, P.O. Box362,Quetta,Pakistan.
Consideraciones finales y recomendaciones
Ecological Modelling, Apr 1, 1988
Livestock management on semiarid ranges is closely linked to ecosystem behavior, and is generally... more Livestock management on semiarid ranges is closely linked to ecosystem behavior, and is generally risky. Forward stochastic dynamic programming was used to compare livestock management decisions made under assumptions of risk. This comparison determines when a stochastic system can properly be managed as a deterministic system; that is, when the certainty equivalence property holds. Low forage quality and animal growth with constant or decreasing prices near the end of the grazing season favored early scale of cattle. Sale dates regulated of the standing crop of vegetation left at the end of the grazing season. Fluctuations in rainfall did not change the optimal decisions at low initial stocking rates. However, at high initial stocking rates the optimal strategies using deterministic and stochastic models were different during the last half of the grazing season. Therefore, risk was greater for high initial stocking rates than for low initial stocking rates. Risk was less for flexible marketing dates. A substantial portion of livestock production of the world takes place on rangelands with arid or semi-arid climates. These climates have large rainfall fluctuations that influence forage production and the decisions to be made with regard to livestock production. Medium-and long-term risk in forage production has been studied by , , among others. Less attention has been paid to short-term decisions that take place within a grazing season. These decisions are related to two fundamental issues in range science: (a) optimal stocking rate (area per animal per unit of time); and (b) vegetation remaining at the
Journal of Agricultural and Applied Economics, Feb 1, 2012
We analyze the effects of the North American Free Trade Agreement (NAFTA) and United States farm ... more We analyze the effects of the North American Free Trade Agreement (NAFTA) and United States farm subsidies on U.S.-Mexican illegal immigration and agricultural trade. The theoretical analysis develops an integrated trade-migration model and shows that NAFTA and U.S. subsidies exacerbate the illegal labor flow and increase U.S. exports. The theoretical analysis is empirically implemented by simultaneous estimation and simulation analysis. The analysis shows that NAFTA increased the number of undocumented workers to U.S. agriculture and U.S. farm exports to Mexico by an average of 1573 and $6.82 billion, respectively. U.S. farm subsidy reduction decreases unauthorized entry marginally and U.S. farm exports by an average of $3.2 billion.
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Papers by Abelardo Rodriguez Lopez