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| Registros recuperados: 176 | |
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| Haque, Mohua; Biermacher, Jon T.; Kering, Maru K.; Guretzky, John A.. |
| There is limited information available explaining the agronomic and economic relationships between yield and nitrogen and phosphorus applications to growing switchgrass produced in phosphorus-deficient soils. The objective of this study was to determine the effects of nitrogen and phosphorus fertilizers on feedstock yield and measures of expected total cost, gross revenue, net return, and breakeven price of feedstock produced in phosphorus-deficient soils in the southern Great Plains. Data were collected from a three-year, two-location agronomic field study conducted in south-central Oklahoma. Two discrete nitrogen treatments (0 and 134 kg ha-1) and four discrete phosphorus treatments (0, 30, 60 and 90 kg ha-1) were randomly assigned to small plots... |
| Tipo: Presentation |
Palavras-chave: Bioenergy feedstock; Economics; Phosphorus-deficient soils; Nitrogen; Switchgrass; Crop Production/Industries; Environmental Economics and Policy; Production Economics. |
| Ano: 2012 |
URL: http://purl.umn.edu/119765 |
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| Vosough Ahmadi, Bouda; Morgan, Colin A.; Stott, Alistair W.. |
| Since decoupling of the CAP, many Scottish suckler cow farms are facing financial difficulties. In response, many farmers are out-wintering extensively managed suckler cows to minimise production costs. These systems are of animal welfare concern. A range of trade-offs between animal welfare indicators and between animal welfare and farm profitability can be identified. A Dynamic Programming (DP) model was developed to study these trade-offs. Two herds were modelled assuming their feeding regimes were either low (LHERD) or high (HHERD). The objective of the DP was to maximise the expected net margin from a current cow and its successors over an infinite time horizon. Preliminary results showed that the rate of voluntary culling was higher in HHERD than in... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Beef cow; Economics; Dynamic programming; Animal welfare; Livestock Production/Industries. |
| Ano: 2009 |
URL: http://purl.umn.edu/51078 |
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| Jiang, Yong; Koo, Won W.. |
| The purpose of this study is to examine the possible impacts of cap-and-trade climate policy on agricultural producers in North Dakota. In this study, we focused on carbon sequestration potential and production cost impacts of carbon prices, and explicitly considered farmer preferences and adaptation behavior to estimate the benefits and costs of greenhouse gas cap-and-trade. Based on empirically estimated farmer behavior models, a policy simulation with agricultural census data identified farmer acreage allocation for carbon sequestration, carbon offset supplies and revenues, the production cost impacts of carbon prices, and impacts on net farm income and their distributions among heterogeneous farmers. Our analysis found that: 1) farmer ex ante... |
| Tipo: Report |
Palavras-chave: Cap-and-trade; Climate change; Agricultural impacts; Economics; Carbon sequestration; Agricultural Finance; Financial Economics. |
| Ano: 2010 |
URL: http://purl.umn.edu/98170 |
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| Saraiva,DJ; Campina,ACC; Gonçalves,FCS; Melo-Viegas,D; Santos,ACG; Nogueira,RMS; Costa,AP. |
| ABSTRACT Brazilian poultry production is growing, mainly due to the cost and benefit that chicken meat provides. The importance of free-range chickens and the susceptibility, to which they are exposed, makes it necessary to know about gastrointestinal parasites and the consequences that large infections can cause for them as such as weight loss. The present study aimed to determine the occurrence of gastrointestinal parasites in free-range hens raised in an extensive regime in the municipality of Santa Rita, state of Maranhão, Brazil. The studied population was composed of adult chickens (Gallus gallus domesticus) acquired from slaughterhouses in the region. The gastrointestinal organs of each chicken were separated and subsequently conditioned in flasks... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cestoda; Economics; Gallus gallus domesticus; Helminthe fauna; Nematoda. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100315 |
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| Tecchio,Marco Antonio; Bettiol Neto,José Emilio; Barbosa,Wilson; Tucci,Maria Luiza Sant'ana. |
| This work was carried out to show the current situation of the temperate fruit crops in São Paulo state, Brazil, with an emphasis on grapes, peaches, apples, plums, nectarines and pears crops. Current economic data of crops, major growing regions, main cultivars produced, as well as the new technologies generated by research are presented. Regarding the grape crop, a decrease in the national production as well as in the major growing states was observed. The main grapes growing centers in São Paulo state are presented, highlighting its peculiarities regarding cultivars, cultural crop management and current researches. A trend has been observed toward increasing Niagara Rosada grape growing area rather than the fine table grape cultivars. It was also... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Temperate fruit crops; Economics; Diagnosis; Cultural management. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000500018 |
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| Rezende,Bráulio L. A; Cecílio Filho,Arthur B; Barros Júnior,Aurélio P; Porto,Diego R. Q; Martins,Maria Inez E. G. |
| The economical analysis complements the evaluation of the intercrop systems efficiency, considering besides the physical production of crops, the price of products according to their quality classification and time of the year. Intercropping systems of lettuce and cucumber in two plant populations under greenhouse were economically evaluated in winter-spring, in Jaboticabal City, São Paulo State, Brazil. The total operating cost (TOC) of cucumber and lettuce as sole crop and intercropping were estimated, as well as gross revenue (GR) and operating profit (OP). The labor for the crops was the component with greater participation in the TOC of crops in intercropping and single crop. Greater GR and OP were observed in intercrops established by transplanting... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa; Cucumis sativus; Economics; Agronomic efficiency. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200028 |
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| Furtado,Guilherme H.; Rocha,Jaime; Hayden,Ricardo; Solem,Caitlyn; Macahilig,Cynthia; Tang,Wing Yu; Chambers,Richard; Figueiredo,Maria Lavínea Novis de; Johnson,Courtney; Stephens,Jennifer; Haider,Seema. |
| ABSTRACT Background: Early antibiotic switch and early discharge protocols have not been widely studied in Latin America. Our objective was to describe real-world treatment patterns, resource use, and estimate opportunities for early switch from intravenous to oral antibiotics and early discharge for patients hospitalized with methicillin-resistant Staphylococcus aureus complicated skin and soft-tissue infections. Materials/methods: This retrospective medical chart review recruited 72 physicians from Brazil to collect data from patients hospitalized with documented methicillin-resistant Staphylococcus aureus complicated skin and soft tissue infections between May 2013 and May 2015, and discharged alive by June 2015. Data collected included clinical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: IV-to-PO switch; Length of stay; Clinical criteria; Antibiotic therapy; Economics. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702019000200086 |
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| Rehman,Abdul; Farrukh Saleem,M; Ehsan Safdar,Muhammad; Hussain,Safdar; Akhtar,Naeem. |
| Finding more efficient ways to fertilize crops will reduce N losses and increase nutrient uptake. A field experiment was conducted at the Agronomic Research Farm, University of Agriculture, Faisalabad, Pakistan, during 2006 and repeated in 2007. The crop was planted in three different geometrical arrangements, viz. flat sowing (rows spaced 75 cm), ridge sowing (ridges spaced 75 cm), and strip planting (double row strips spaced 120 cm with 30 cm between rows in a strip); NPK was applied in four different combinations (0-0-0 control, 200-100-100 low dose,250-125-125 medium dose, and 300-150-150 high dose kg ha-1). Both fertilizer use efficiency (FUE) and N use efficiency (NUE) were significantly lower with the high fertilizer dose (300-150-150 kg NPK ha-1)... |
| Tipo: Journal article |
Palavras-chave: Nutrient; NPK; Efficiency; Economics; Planting methods; Maize. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400014 |
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| Restrepo,Adriana P; García García,José; Moral,Raúl; Vidal,Fernando; Pérez-Murcia,María D; Bustamante,María Á; Paredes,Concepción. |
| A.P. Restrepo, J. Garcia-Garcia, R. Moral, F. Vidal, M.D. Pérez-Murcia, M.A. Bustamante, and C. Paredes. 2013. A comparative cost analysis for using compost derived from anaerobic digestion as a peat substitute in a commercial plant nursery. Cien. Inv. Agr. 40(2): 253-264. The aim of this study was to evaluate the economic feasibility of using compost made from anaerobically digested cattle slurries in a commercial nursery. Using a comparative cost analysis, commercial peat substrate growing media has been partially substituted with increasing proportions of compost (25, 50 and 75% v/v of compost). This experiment was intended to establish the conditions under which the use of these composts is feasible and competitive relative to commercial peat, at both... |
| Tipo: Journal article |
Palavras-chave: Anaerobic digestion; Costs; Economics; Growing media; Peat; Seedling production. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200002 |
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| Registros recuperados: 176 | |
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