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| Registros recuperados: 150 | |
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| Qasemi Kordkheili, Peyman; Amin Asoodar, Mohammad; Kazemi, Navab. |
| Due to good climate condition and large cultivation area in Mazandaran province of Iran, orchard commodities products, especially orange production is widely improved in this region. In this study, Data Envelopment Analysis (DEA) technique was used to analyze the efficiency of farmers, discriminate efficient orchards from inefficient ones and to identify wasteful uses of energy for orange producers in Sari region. Data were collected using face-to-face surveys from 86 orange orchardists and included the human power, machinery, diesel fuel, chemicals, fertilizer, farmyard manure, water for irrigation and electricity input sources used per hectare of orange production. The data was organized and analyzed by DEA Techniques. The results revealed that the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Technical efficiency; Energy saving; Orange production; Sari. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2554 |
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| Ebrahimi, Sajjad; Mesri Gundoshmian, Tarahom; Abdi, Reza; Raei Jadidi, Mehri. |
| The goal of this study was to evaluate the sustainability and efficiency of broiler production with regard to energy consumption in Ardabil province, Iran. To reach the goal, linear programming model and Data Envelopment Analysis (DEA) were employed. Data were collected from the farmers using a face–to–face questionnaire performed in September–December 2014 period. The DEA application results showed that the average values of technical, pure technical and scale efficiency scores of producers were 0.949, 0.988 and 0.960, respectively. Also, energy saving target ratio for broiler production was calculated as 8.33%, indicating that by following the recommendations resulted from this study, about 12316.85 MJ/(1000 bird) of total input energy could be saved... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Energy efficiency; Data Envelopment Analysis; Linear programming; Technical efficiency; Broiler. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3562 |
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| This paper develops a meta-regression analysis to explain the variation of mean technical efficiency (PETP) measurements from a total of 65 frontier studies that report technical efficiency (ET) measurements at the dairy farm level in the literature published in English and Spanish. The analysis includes the effect of methodology on ET measurements, as well as the effect of the econometric procedure on the meta-regression estimates. Eight models were estimated, and two of these were selected: a fixed effects specification with dummy variables for the most significant studies without geographical effects (EFS), and a specification where the multiple observations are averaged and geographical effects included (OP). Based on model performance, the EFS option... |
| Tipo: Journal article |
Palavras-chave: Meta-regression; Frontier models; Technical efficiency; Dairy farms. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000200011 |
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| Mancilla Villa, Oscar Raúl. |
| Los objetivos de esta investigación fueron realizar el diseño, trazo y construcción de terrazas de banco para plantaciones forestales comerciales en el Rancho Jesús María, Valle de Bravo, México, evaluar su eficiencia técnica y determinar su factibilidad financiera. El diseño consistió en determinar los intervalos vertical y horizontal de los bancales, con base en la precipitación, pendientes dominantes en el terreno (15% y 30%), la textura del suelo y los requerimientos del silvicultor; se diseñaron 70 terrazas con 3 m de ancho por 0.45 m y 0.90 m de alto para las pendientes respectivas, en un total de 4 ha de terreno y se plantaron 3,757 árboles comerciales. Para la eficiencia técnica se midieron la infiltración, el escurrimiento superficial y la... |
| Tipo: Tesis |
Palavras-chave: Terrazas de banco; Pérdida de suelo; Escurrimiento superficial; Infiltración; Eficiencia técnica; Viabilidad financiera; Maestría; HIdrociencias; Bench terraces soil loss; Superficial glide; Infiltration; Technical efficiency; Financial viability. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1422 |
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| Albiero,Daniel; Xavier,Reuel S.; Garcia,Angel P.; Marques,Arthur R.; Rodrigues,Ruan L.. |
| ABSTRACT Agricultural mechanization is a significant factor of agricultural modernization, but there are few data on the technological levels of this mechanization in the State of Ceará, Brazil. To study this topic, we designed a structured questionnaire, and interviews were conducted across the state. The survey data made it possible to calculate an index of agricultural mechanization technology and study hypotheses specific to farms of Ceará. The results indicate that the technology levels are different between farms of different sizes: large and medium farms are level I-M5 (automation), while small farms ranged from level IV-M1/M2 (primary/animal) to III-M3 (preliminary). We conclude that public policy for training should be directed at small farms.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural mechanization; Technological level; Technical efficiency; Economic development. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000100133 |
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| FARIA,A.T.; SILVA,E.M.G.; PEREIRA,G.A.M.; SOUZA,M.F.; SILVA,A.A.; REIS,M.R.. |
| ABSTRACT: Studies on herbicide behavior in soils may be performed using biological and chemical methods. The efficiency of the biological method depends on the indicator species sensitivity to low herbicide concentrations in the soil solution. Among the herbicides commonly used in Brazil for corn cultivation, tembotrione stands out. In the last agricultural seasons, the intoxication of some crops when cultivated in succession to corn has been reported, which may be attributed to tembotrione recommendations without the knowledge of their interactions with colloids of tropical soils. In this research, we selected an indicator plant species of tembotrione residues in the soil after sorting 12 species. The sorption of this herbicide was estimated in two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioassay; Environmental impact; Herbicides; Technical efficiency. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100327 |
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| Abatania, Luke N.; Hailu, Atakelty; Mugera, Amin W.. |
| Crop production is the main source of livelihood for households in Northern Ghana. The government is committed to improving crop production and knowledge about the technical efficiency of crop farms is essential in guiding policy decisions. This paper examined the technical efficiency of 189 crop farms in Northern Ghana using data envelopment analysis (DEA) with bootstrapping. We found that bias-corrected average technical efficiency of the sample farms is 77.26%. The estimated scale efficiency is 94.21%. In a second stage regression, we found that hired labour, geographical location of farms, gender and age of head of household significantly affect technical efficiency. Policy implications of the results are discussed. |
| Tipo: Presentation |
Palavras-chave: Technical efficiency; DEA; Bootstrap; Ghana; OLS regression.; Farm Management. |
| Ano: 2012 |
URL: http://purl.umn.edu/124211 |
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| Nambiro, Elizabeth; Chianu, Jonas; Murage, Alice W.. |
| Maize is the staple food for most Kenyan households, and grown in almost all the farming systems. Due to diminishing farm sizes in Kakamega District, crop productivity and the efficiency of farming systems are of great concern. This paper aims to provide empirical evidence on the links between efficiency in maize production and access to soil-related agricultural information services. Using cluster sampling, a total of 154 farmers in Kakamega District were interviewed. A 2–step estimation technique (Data Envelopment Analysis (DEA) and Tobit model) were used to evaluate the technical efficiencies among the farmers and the factors explaining the estimated efficiency scores. Data was disaggregated into farmers with and those without access to soil-related... |
| Tipo: Journal Article |
Palavras-chave: Maize; Soil information; Technical efficiency; Tobit analysis; DEA; Teaching/Communication/Extension/Profession. |
| Ano: 2010 |
URL: http://purl.umn.edu/95961 |
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| Cattle, Nathan; White, Benedict. |
| The production performance of wheatbelt farms in Western Australia is analysed to determine whether potential to exploit scale economies and improve technical efficiency has driven the trend towards increased farm size. An input-orientated stochastic frontier model is used to estimate technical efficiency and scale economies using an unbalanced panel dataset provided by BankWest for the period 1995/1996 to 2005/2006. Differences in the relative efficiency of farms are explored by the simultaneous estimation of a model of inefficiency effects. The results show the majority of wheatbelt farms operate at high levels of technical efficiency and experience increasing returns to scale. Over the study period farms became bigger to benefit from economies of scale,... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Stochastic frontier; Agriculture; Farm size; Scale economies; Technical efficiency; Productivity Analysis. |
| Ano: 2007 |
URL: http://purl.umn.edu/10392 |
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| Registros recuperados: 150 | |
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