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Registros recuperados: 49
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TESTING FOR SYMMETRY IN PRICE TRANSMISSION: AN EXTENSION OF THE SHILLER LAG STRUCTURE WITH AN APPLICATION TO FRESH TOMATOES AgEcon
Parrott, Scott D.; Eastwood, David B.; Brooker, John R..
An empirical model of the price relationship between distribution stages is developed based on the Shiller lag. The assumption of constant returns to scale is relaxed to incorporate changes in the volume of shipments. An iterative GLS methodology is developed to estimate the model. Tests for symmetry, length of adjustment, and the amount of price transmission are outlined. An application using the change in the retail price of tomatoes based on shipping point price changes is described. Results suggest that the supermarket chain does not respond differently to price increases versus decreases at the shipping point level.
Tipo: Journal Article Palavras-chave: Farm level; Price spreads; Price transmission; Retail level; Shiller lag structure; Symmetry; Tomatoes; Demand and Price Analysis.
Ano: 2001 URL: http://purl.umn.edu/14688
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THE IMPACT OF THE PHASE OUT OF METHYLBROMIDE ON THE U.S. VEGETABLE INDUSTRY AgEcon
VanSickle, John J.; Nalampang, Sikavas.
Methyl bromide is a critical soil fumigant used in the production of several fresh fruit and vegetables grown in the U.S. The U.S. Clean Air Act of 1992, as amended in 1998, requires that methyl bromide be phased out of use by 2005. A mathematical programming model of the North American vegetable market indicates that the elimination of methyl bromide will have significant impacts on U.S. growers of fruit and vegetables that rely on methyl bromide for soil fumigation purposes. The schedule for eliminating methyl bromide has resulted in a 50% decline in methyl bromide availability and has resulted in significant increases in the price of methyl bromide. The vegetable industry has not felt the impact that the reduction in methyl bromide may have, however, as...
Tipo: Working or Discussion Paper Palavras-chave: Methyl bromide; Montreal Protocol; U.S. Clean Air Act; North American vegetable market; Strawberries; Tomatoes; Bell peppers; Eggplant; Cucumbers; Squash; Watermelons; Crop Production/Industries.
Ano: 2002 URL: http://purl.umn.edu/15664
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Thermal energy use in three Swedish greenhouses – the outdoor temperature-dependent variation and the influence of wind speed under no-sunlight conditions CIGR Journal
Katarzyna Maslak; Swedish University of Agricultural Sciences, Dept. of Biosystems and Technology, Alnarp; Sven Nimmermark; Swedish University of Agricultural Sciences, Dept. of Biosystems and Technology, Alnarp.
Thermal energy is used in greenhouses for the temperature and humidity control.  In the North of Europe, energy expenditures have a significant share in the total greenhouse production cost.  A study was performed to quantify and analyze the use of thermal energy in three Swedish commercial greenhouses (two with tomatoes and one with ornamental plants), to test the hypothesis that substantial amounts of heat are used at higher outdoor temperatures, and to investigate the influence of the wind speed on the energy use under no-sunlight conditions.  Hourly climate data were registered by means of Priva control systems.  The use of thermal energy was computed based on the readings from the flowmeters and the temperature of the inlet/outlet water to/from the...
Palavras-chave: Agricultural Engineering Thermal energy use; Greenhouses; Tomatoes; Ornamental plants; Wind speed.
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2923
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Thermal energy use in three Swedish greenhouses – the outdoor temperature-dependent variation and the influence of wind speed under no-sunlight conditions CIGR Journal
Maslak, Katarzyna; Nimmermark, Sven.
Thermal energy is used in greenhouses for the temperature and humidity control.  In the North of Europe, energy expenditures have a significant share in the total greenhouse production cost.  A study was performed to quantify and analyze the use of thermal energy in three Swedish commercial greenhouses (two with tomatoes and one with ornamental plants), to test the hypothesis that substantial amounts of heat are used at higher outdoor temperatures, and to investigate the influence of the wind speed on the energy use under no-sunlight conditions.  Hourly climate data were registered by means of Priva control systems.  The use of thermal energy was computed based on the readings from the flowmeters and the temperature of the inlet/outlet water to/from the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering Thermal energy use; Greenhouses; Tomatoes; Ornamental plants; Wind speed.
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2923
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TOMATE 'Finestra': híbrido F1 ornamental. Infoteca-e
Tomate finestra. Origem e características da planta. Disponibilidade de sementes. Recomendações para o cultivo em vaso.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Híbrido Finestra; Tomate ornamental; Brasília; Distrito Federal; Brasil; Hybrid; Ornamental plant; Cerrado; Lycopersicon Esculentum; Tomate; Brazil; Tomatoes.
Ano: 2001 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/770975
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Tomaticultura em gramado, na região do trópico úmido brasileiro. Infoteca-e
CHENG, S. S.; CHU, E. Y..
bitstream/item/39912/1/Circ-Tec-3-Am-Oriental.pdf
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Cultivo em gramado; Cultural methods; Cultivation.; Comercialização; Pratica Cultural; Produtividade; Tomate.; Tomatoes; Trade; Yields..
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/377270
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U.S.-Canadian Tomato Wars: An Economist Tries to Make Sense Out of Recent Antidumping Suits AgEcon
VanSickle, John J.; Evans, Edward A.; Emerson, Robert D..
U.S. growers filed an antidumping case against Canadian growers of greenhouse-grown tomatoes, alleging that U.S. growers were being injured, or threatened with material injury, by imports from Canada. The U.S. Department of Commerce determined that imports of greenhouse-grown tomatoes were being sold in U.S. markets at less than fair market value. The U.S. International Trade Commission determined the “like product” to be all fresh market tomatoes, concluding the domestic industry was not materially injured. Anecdotal evidence used by the Commission Department in determining like product ignores the wealth of knowledge that economics can add. An economic model is proposed for purposes of determining like product.
Tipo: Journal Article Palavras-chave: Antidumping; Law; Tomatoes; Trade; U.S.-Canada; F13; F17; K33; Q17.
Ano: 2003 URL: http://purl.umn.edu/37962
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Vegetable and Melons Outlook: June 24, 2010 AgEcon
Lucier, Gary; Glaser, Lewrene K..
Tipo: Report Palavras-chave: Potatoes; Tomatoes; Lettuce; Onions; Broccoli; Dry beans; Pinto; Dry peas; Lentils; Direct marketing; Supply; Demand; Prices; Retail; Farm; Fresh; Processing; Canned; Frozen; Wholesale; PPI; CPI; Input prices; Data; Market analysis; USDA; ERS; Economic Research Service; United States Department of Agriculture; VGS339; Agribusiness; Crop Production/Industries; Demand and Price Analysis; Marketing; Production Economics.
Ano: 2010 URL: http://purl.umn.edu/92333
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การปรับปรุงพันธุ์ต้านทานโรคไวรัสใบหงิกเหลืองของมะเขือเทศ Thai Agricultural
Kanlayanee Chaichana; Prasartporn Smitamana; Maneechat Nikronpun.
Improvement of tomato for resistance to tomato yellow leaf curl virus (TYLCV) were carried out byusing a pedigree and backcrossing methods and crossing between resistant parent H-24 with susceptible parents CT-1 and CT-2. The virus was transmitted by viruliferous whiteflies and virus infection was detected by sandwich ELISA. F2 generation showed moderate resistance with scores ranging from 1.58-3.21. Segregation of disease resistance was observed among the population. Virus detection of the F2 populations (scoring 1 or 2) showed virus titer which were not statistically different from H24 but were significantly different from CT-1, CT-2 and susceptible control. The disease severity and virus titer in infected plants of F2 populations showed positive...
Tipo: PhysicalObject Palavras-chave: Tomatoes; Tomato yellow leaf curl; Viroses; Plant breeding; Hybrid; Fertilization; Virus resistance; มะเขือเทศ; โรคใบหงิกเหลือง; โรคที่เกิดจากเชื้อไวรัส; การปรับปรุงพันธุ์พืช; ความต้านทานโรค; พันธุ์ลูกผสม; การคัดเลือกพันธุ์; วิธีการผสมพันธุ์.
Ano: 2009 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5720
Registros recuperados: 49
Primeira ... 123 ... Última
 

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