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| Registros recuperados: 150 | |
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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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| Asogwa, B.C.; Umeh, Joseph Chinedu; Ater, P.I.. |
| This study analyzed relationship between techn ical efficiency and socio-economic variables of cassava farmers in Nigeria. Data were collected from randomly sampled 360 cassava farmers in Nigeria using a structured questionnaire. The data were analyzed using descriptive statistics comprising mean, minimum value, maximum value and standard deviation, as well as inferential statistics, which comprised correlation and regression. The findings of the s tudy indicated that a significant relationship exists between technical efficiency and cassava output (0.542), farm income (0.612), processing cost (- 0.414), gari yield (0.608), gross margin (0.483), farming experience (0.278), education (0.699) and extension contact (0.585) of the sampled cassava farmers in... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Technical efficiency; Nigerian cassava farmers; Food security policy; Crop Production/Industries; Food Security and Poverty; Productivity Analysis. |
| Ano: 2006 |
URL: http://purl.umn.edu/25473 |
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| Henriques, Pedro Damiao de Sousa; Carvalho, Maria Leonor da Silva. |
| Este estudo teve como objectivos caracterizar e analisar a evolução, medir os níveis de eficiência técnica e relacionar esta com alguns atributos dos agricultores e das explorações, de uma amostra de explorações vitícolas pertencentes à região Alentejo. Os atributos considerados foram a dimensão física e económica, idade do produtor, natureza jurídica do produtor, tipo de posse da terra, irrigação, tipo de comercialização e especialização cultural e produtiva. A amostra analisada é composta por um painel de explorações, produtoras de uva para vinho para o período 2000-2005, pertencentes à Rede de Informação de Contabilidades Agrícolas, do Ministério da Agricultura, Desenvolvimento Rural e Pescas (MADRP). A caracterização e a análise da evolução das... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Eficiência técnica; Métodos paramétricos; Vinha; Technical efficiency; Parametric methods; Vineyards; Agribusiness; Crop Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/108930 |
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| Registros recuperados: 150 | |
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