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| Registros recuperados: 1.237 | |
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| Gastó,Juan; Vera,Leonardo; Vieli,Lorena; Montalba,Rene. |
| This work is the product of a long process that tried to approximate the principia involved in sustainable agriculture in an attempt to analyze it. We believe that these principia are crucial for the systematic, rigorous, and consistent development of sustainable agriculture. The unifying concepts of agriculture sustainability are classified into seven fundamental principies: (i) there is a hierarchy in decision-making with respect to human actions on the landscape and environment; (ii) human impact on the land should be analyzed from different perspectives (local, global, anthropocentric, and ecocentric); (iii) the carrying capacity in an agrarian context is crucial to ecosystem management and design; (iv) humans arrange nature with little consideration... |
| Tipo: Journal article |
Palavras-chave: Agriculture; Cultural landscape; Nature; Territory; Sustainability. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000100001 |
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| Cano Estrada,Araceli; Vélez Díaz,Daniel; Morgado Hernández,Carlos Alberto. |
| Over the past several decades, technological developments and modernization have grown concomitantly.For example, advances in biotechnology have been used as a tool to increase food production. Specifically, advances in genetic engineering have made possible the manipulation of crops to increase yield, guaranteeing food supplies for the increasing world population. However, transgenic crops have not been well received by all members of society, and there is still uncertainty about their social benefits and the possible implications to human health. Additionally, the benefits of agricultural modernization have favored only developed countries, whereas people living in developing and underdeveloped countries suffer rampant hunger, malnutrition and poverty.... |
| Tipo: Journal article |
Palavras-chave: Agriculture; Development; Food industry; Nutrition; Organic food; Transgenic food. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100001 |
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| Boccanelli,Silvia; Pire,Eduardo; Lewis,Juan. |
| Agriculture has been practised in the Argentine Pampa region for more than a century. This long history of disturbance has strongly modified the native vegetation of the region. Some original species have disappeared or its area has been remarkably reduced. The objective was to evalúate vegetation changes over time after the abandonment of agriculture practice. Our hypothesis was that over time vegetation in this region will evolve towards a "flechillar" (Stipa spp. community) similar to the original vegetation. The experiment was conducted at Zavalla (Santa Fe) Argentina (33° 01' S, 60° 53' W and 50 m.a.s.1.). Vegetation evolution was studied during 15 years (1982-1997) after abandonment, considering four initial crop situations (i.e. wheat, soybean,... |
| Tipo: Journal article |
Palavras-chave: Abandoned field; Agriculture; Disturbance; Secondary succession; Weeds. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000200005 |
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| Campos,Jorge; Foster,William. |
| During the past thirty years the Chilean economy generally and agriculture specifically have grown considerably, raising both per capita GDP and observed real wages of salaried workers. There has been, however, a concern about the country's persistent unequal distribution of income. Among the possible factors associated with income inequality is the relatively infrequent use of contracts in seasonal and occasional work, both strongly present in agriculture. Based on Chilean household surveys (CASEN) for 1996 and 2006, impacts of contracts and work relationships (permanent, seasonal, etc.) on salaries, and their possible contributions to inequality, were measured, accounting for schooling, ethnicity, work experience, geographic zones, and other variables... |
| Tipo: Journal article |
Palavras-chave: Agriculture; Labor; Gender; Income distribution; Inequality; Work contract; Work relationship. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100001 |
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| Streck,Nereu Augusto. |
| The amount of carbon dioxide (CO2) of the Earth´s atmosphere is increasing, which has the potential of increasing greenhouse effect and air temperature in the future. Plants respond to environment CO2 and temperature. Therefore, climate change may affect agriculture. The purpose of this paper was to review the literature about the impact of a possible increase in atmospheric CO2 concentration and temperature on crop growth, development, and yield. Increasing CO2 concentration increases crop yield once the substrate for photosynthesis and the gradient of CO2 concentration between atmosphere and leaf increase. C3 plants will benefit more than C4 plants at elevated CO2. However, if global warming will take place, an increase in temperature may offset the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Global warming; Photosynthesis; Agriculture; Food supply. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782005000300041 |
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| Szesz Junior,Albino; Monteiro Junior,Marcos; Dias,Ariangelo Hauer; Mathias,Ivo Mário; Conti,Giuvane. |
| ABSTRACT: Aeration is currently the most commonly used technique to improve the drying and storage of grain, depending on temperature and water content of the grain, as of the temperature and relative humidity of the outside air. In order to monitor temperature and humidity of the grain mass, it is possible to have a network of sensors in the cells of both internal and external storage. Use of artificial intelligence through Fuzzy theory, has been used since the 60s and enables their application on various forms. Thus, it is observed that the aeration of grain in function of representing a system of controlled environment can be studied in relation to the application of this theory. Therefore, the aim of this paper is to present an embedded Fuzzy control... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arduino; Agriculture; Mathematical model; Fuzzy logic; Grain aeration. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001101917 |
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| Rockett,Fernanda Camboim; Corrêa,Rafaela da Silveira; Pires,Gabriela Cheuiche; Machado,Letiane de Souza; Hoerlle,Fernanda Sonntag; Souza,Camila Pinto Monteverde De; Oliveira,Ana Beatriz Almeida de. |
| ABSTRACT: In Brazil, at least 30% of the total financial resources provided by the federal government for school feeding should be used to buy products from family farming. The present study examines the profile of the purchase of these products in municipalities of the state of Rio Grande do Sul (RS), south Brazil, in 2014. A cross-sectional descriptive study was carried out with information obtained through a questionnaire sent to the municipalities and filled by respondents. Of the 371 participating municipalities, 367 acquired products from family farming, and 86.8% of these municipalities achieved the minimum percentage required. Nutritionists and farmers were the main components involved in the articulation of this process. Difficulties faced by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: School meals; Food and nutrition security; Agriculture; Public policy. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000200930 |
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| Berk,Ali. |
| ABSTRACT: This study has focused on the factor affecting the exit from farming of young farmers, since it is an important issue in many provinces of Turkey. Data obtained through face-to-face interview method with 85 selected young farmers (aged 15-40 years) engaged in agricultural activity in the Niğde province in 2017. Logistic regression model based upon the dependent variable decision to exit from farming was used to determine relevant factors. According to results, number of children, the presence of house in the city center and the monthly income level has effects to exit from farming. Young farmers have priorities to reach a better life conditions for their children such as better education and health care services. Rural investment support should... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rural; Agriculture; Exit from farming; Young farmers. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000800901 |
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| Zhang,Zhenguo; Zhou,Jun. |
| ABSTRACT: Biodiversity plays a key role in human welfare by providing agricultural, economic, and health benefits. However, following the industrial revolution, the rapid expansion of the human population and subsequent economic activities have caused a dramatic loss in global biodiversity, resulting in significant disturbances to ecosystems and our own living conditions. Accordingly, the conservation of biodiversity has become one of the most important challenges for humanity. The vast numbers of plants, animals, and microorganisms, the enormous genetic diversity of these species and the different ecosystems to which these organisms belong are all part of a biologically diverse planet. A substantial proportion of the world’s biodiversity has been... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Ecosystem; Agriculture; Conservation; Genetics; Human welfare. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000500400 |
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| Ullah,Arif; Khan,Dilawar; Zheng,Shaofeng; Ali,Uzair. |
| ABSTRACT: This study aimed to investigate factors influencing the adoption of improved cultivars (ICs) in peach production in Khyber Pakhtunkhwa province of Pakistan. A total of 270 respondents were randomly selected from the three different cultivated areas of Khyber Pakhtunkhwa, namely, Peshawar, Nowshera and Swat. Binary choice model was used in this study to categorise the ICs of peach farmers into adoption and non-adoption. The study identifies that socio-economic, institutional farm resources, and climatic factors are influencing the adoption of ICs of peach production. Results of the estimated model reveal that farmer’s age, education, household size, membership, cell phone, farm size, extension services and the role of the non-government... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Improved cultivars; Peach; Technology; Agriculture. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001100200 |
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| Aparecido,Lucas Eduardo de Oliveira; Rolim,Glauco de Souza; Richetti,Jonathan; Souza,Paulo Sergio de; Johann,Jerry Adriani. |
| ABSTRACT Climate is the set of average atmospheric conditions that characterizes a region. It directly influences the majority of human activities, especially agriculture. Climate classification systems (CCSs) are important tools in the study of agriculture, enabling knowledge of the climatic characteristics of a region. Thus, we aimed to perform the climatic characterization of the State of Paraná using the methods proposed by Köppen and Geiger (1928), modified by Trewartha (1954) (KT), Thornthwaite (1948) (TH) and Camargo (1991) and modified by Maluf (2000) (CM), using data from the European Center for Medium-Range Weather Forecast (ECMWF) model. The results of spatial interpolation (virtual stations) were performed using the Kriging method in spherical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water balance; Agriculture; Climatic characterization; ECMWF. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000400405 |
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| Registros recuperados: 1.237 | |
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