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| Registros recuperados: 406 | |
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| Liao, Yongsong; Gao, Zhanyi; Bao, Ziyun; Huang, Qingwen; Feng, Guangzhi; Xu, Di; Cai, Jiabin; Han, Huijing; Wu, Weifeng. |
| Irrigation occupies a central position in China’s crop production. However, due to low per capita water resources, much worse, unevenly distributed over regions and time and the rapid increase of water diversions to non-irrigation sectors, irrigation water shortages have become a very serious problem. Without the adoption of effective measures this problem may even threaten China’s food security. Currently, irrigation efficiency is very low in general, irrigation water prices cannot fully recover water supply costs, and irrigation facilities are aging due to the lack of funding for O&M (operation & maintenance). Since water prices are regulated by the government, and not determined by the market, water prices did not work effectively in water... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Water rates; Pricing; Price policy; Cost recovery; Farmers attitudes; Water rights; Water market; Water supply; User charges; Irrigation water; Water allocation; Irrigation management; Participatory management; Water conservation; Institutions; Organizations; Water users associations; Cereals; Yields; Models; Labor; Cost benefit analysis; Irrigation requirements; Investment; Groundwater management; Wells; Irrigation canals; Food security; Legal aspects; Crop Production/Industries; Farm Management; Food Security and Poverty; Production Economics; Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/91872 |
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| Fernandez Aguirre, Hector; Perez Mata, Luz Elena; Godoy Avila, Salvador; Reyes Lopez, Alfonso; Valdes Rodriguez, Victor M.; Prado Delgado, Alberto; Lagarda Murrieta, Angel; Castro Medina, Ruben; Ramirez Contreras, Carlos Efren. |
| The Secretaria de Fomento Agropecuario del Estado de Coahuila created at the express request of rural producers, the program of agricultural and rural extension, in order to lead the field a comprehensive system of technical assistance, supported by technology that generate research institutions , and backed by highly trained technicians, committed to sustainable rural development. Among the main objectives of the program in the case of crops, is raising yields and improve their quality, and in the case of livestock, increase productivity and maintain the health of cattle ranches. The extension program, began in 2006 with two specific programs: one in Cotton, in the laguna region, and another in Bovine, in 23 municipalities of the entity; for 2007, are... |
| Tipo: Journal Article |
Palavras-chave: Agricultural and rural extension program; Yields; Productivity; Health; Cattle; Crops; Agribusiness. |
| Ano: 2009 |
URL: http://purl.umn.edu/48603 |
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| Langyintuo, Augustine S.; Mwangi, Wilfred; Diallo, Alpha O.; MacRobert, John F.; Dixon, John; Banziger, Marianne. |
| The publication describes outcomes of a study conducted in 2007/08 to analyze the bottlenecks affecting the production and deployment of maize seed in eastern and southern Africa. The objectives of the study were to provide a better understanding of the factors limiting the production and deployment of improved maize seed in Africa, and to contribute to increasing the efficiency of variety release, seed production and seed dissemination for new drought tolerant maize varieties. The study identified a number of institutional bottlenecks affecting the maize seed value chain, in particular in the area of policy, credit availability, seed production, germplasm and marketing. To address these bottlenecks and improve the efficiency of seed production and... |
| Tipo: Report |
Palavras-chave: Seed production; Seed industry; Commodity markets; Marketing; Maize; Zea mays; Agricultural products; Yields; Crop yield; Crop Production/Industries; E10; E16; E21; E70; F03. |
| Ano: 2008 |
URL: http://purl.umn.edu/56189 |
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| Choi, Jung-Sup; Helmberger, Peter G.. |
| A two-stage approach is used to estimate sensitivity of corn, wheat, and soybean yields to changes in prices and land idled. Estimated elasticity of demand for fertilizer per acre with respect to expected output price equals 0.47, 0.10, and 0.82 for corn, wheat, and soybeans. Upper estimates of the elasticity of yield with respect to fertilizer equals +0.58, +0.29, and +0.16 for corn, wheat, and soybeans. Yields are found to be quite insensitive to price changes. Fertilizer demands and yields are insensitive to land idled under farm programs. |
| Tipo: Journal Article |
Palavras-chave: Corn; Farm programs; Fertilizer demands; Soybeans; Wheat; Yields; Agricultural and Food Policy; Demand and Price Analysis. |
| Ano: 1993 |
URL: http://purl.umn.edu/15202 |
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| Elbakidze, Levan; Lu, Liang; Eigenbrode, Sanford. |
| This study examines the effects of climatic conditions on interactions among pea and lentil yields, pea aphid Acyrthosiphon pisum (Harris) infestations, and outbreaks of PEMV (Pea enation mosaic) and BLRV (Bean leaf roll) viruses in the Palouse region of easternWashington. The study analytically and empirically evaluates the effects of aphid outbreaks on per acre yields, implicitly including the effects of adopted pest management activities and explicitly taking into account possible effects of climatic conditions on the severity of pea aphid outbreaks. The results show that aphid outbreaks have historically decreased pea and lentil yields by approximately 5% and 7% on average respectively. |
| Tipo: Article |
Palavras-chave: Climate; Pest damages; Yields; Crop Production/Industries; Production Economics; Productivity Analysis. |
| Ano: 2011 |
URL: http://purl.umn.edu/119177 |
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| Bezerra,Sharleny Braz Lobato; Véras,Antonia Sherlânea Chaves; Silva,Dulciene Karla de Andrade; Ferreira,Marcelo de Andrade; Pereira,Kedes Paulo; Santos,Gladston Rafael de Arruda; Magalhães,André Luiz Rodrigues; Almeida,Omer Cavalcanti de. |
| The objective of this study was to evaluate morphometric measures, carcass yields, absolute weights and yields of commercial cuts of carcass of kids with no defined breed. Eighteen castrated male goats, with average weight of 15 kg were used. The experimental period lasted 105 days. The experimental design was completely randomized; animals were allocated to three treatments: free grazing without supplementation; restricted grazing without supplementation and free grazing with supplementation. Animals were supplemented (1% of body weight) with forage cactus (Opuntia ficus - indica, Mill) and soybean meal (Glycine max). The feeding consisted of continuous grazing on caatinga. Supplemented animals had higher live slaughter weight and body score, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body score; Commercial cuts; Conformation; Morphometric measures; Supplementation; Yields. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000100020 |
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| Registros recuperados: 406 | |
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