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| Registros recuperados: 90 | |
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| Vidal Barahona, Aurelio. |
| En el estado de Tabasco, En 1951 se buscó reorganizar las unidades productivas en el campo la producción agropecuaria a escala comercial, lejos de cumplir el objetivo se afectó la biodiversidad de especies de plantas por la deforestación, provocando un grave deterioro en el agroecosistemas. Para el presente estudio se realizó para determinar la diversidad de especies de plantas y su manejo. Se registró las características sociodemográficas del jefe de familia, las prácticas agrícolas en el traspatio y parcela, prácticas agroecológicas en la región y las prácticas agrícolas institucionales. La mayoría de los productores son de avanzada edad. En el traspatio se puede encontrar una gran diversidad de especies de plantas de consumo familiar que van... |
| Tipo: Tesis |
Palavras-chave: Sistemas de producción agrícola; Agricultura orgánica; Tabasco; Maestría; Desarrollo Rural; Agricultural production systems; Organic farming. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1317 |
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| Noe, Egon; Aarhus University; Egon.Noe@agrsci.dk. |
| Assessing the overall effects of organic food systems is important, but also a challenge because organic food systems cannot be fully assessed from one single research perspective. The aim of our research was to determine the role of values in assessments of organic food systems as a basis for discussing the implications of combining multiple perspectives in overall sustainability assessments of the food system. We explored how values were embedded in five research perspectives: (1) food science, (2) discourse analysis, (3) phenomenology, (4) neoclassical welfare economics, and (5) actor-network theory. Value has various meanings according to different scientific perspectives. A strategy for including and balancing different forms of knowledge in overall... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Food networks; Multicriteria assessment; Organic farming; Values. |
| Ano: 2014 |
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| Freyer, Bernhard; University of Natural Resources and Life Sciences (BOKU); bernhard.freyer@boku.ac.at; Bingen, Jim; Michigan State University, USA; bingen@msu.edu; Paxton, Rebecca; University of Natural Resources and Life Sciences (BOKU); Rebecca.Paxton@boku.ac.at. |
| In a continuously expanding, globalizing, and industrializing organic market, organic consumers confront increasing complexity in organic product representation, labeling, and information that challenges how they build trust in organic products. We present a conceptual framework to analyze how consumers might build and practice trust in the organic agrifood chain. We asked specifically about the role of multicriteria assessment tools (MCATs) for trust building. We identified three consumer trust types: uninformed trust in labels (type 1); informed trust in extensive information, control, and certification (type 2); and informed and engaged trust in forms of close farmer–consumer relationships (type 3). Three concepts of... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Ethics; Governance; Multicriteria assessment tools; Organic farming; Reflexivity; Reflectivity; Systems thinking; Trust. |
| Ano: 2014 |
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| Oliveira,Fábio Luíz de; Guerra,José Guilherme M; Ribeiro,Raul de LD; Almeida,Dejair Lopes de; Silva,Edmilson Evangelista da; Urquiaga,Segundo; Espindola,José Antônio A. |
| An experiment was carried out in Magé, Rio de Janeiro State, Brazil, to evaluate the performance of taro (Colocasia esculenta) intercropped with sunn hemp (Crotalaria juncea), used as green manure. A randomized blocks design with four replicates was used and the soil of the field plots was classified as Haplic Gleysol. Treatments consisted of taro (1) intercropped with unpruned sunn hemp, (2) intercropped with sunn hemp cut at soil level, (3) intercropped with sunn hemp pruned at its mid-height, and (4) in monoculture. The taro was planted in double rows spaced by 1.0 m. The planting furrows had a space of 0.5 m, with rhizomes placed at every 3.0 m. The experimental plot consisted of four 3.0 m rows and the useful area corresponded to the five central... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crotalaria juncea; Colocasia esculenta; Organic farming; Leaf area; Leaf burning; Weed control. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362007000400013 |
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| Oliveira,Ademir Kleber M; Rizzi,Elvia Silvia; Pereira,Kelly Cristina L; Bono,José Antônio M; Matias,José Carlos Pina; Rosemary. |
| ABSTRACT The use of plant extracts can be an alternative to reduce the use of pesticides, to control diseases and pests that affect agricultural production. The aim of this study was the chemical characterization of the extract and fractions of Pouteria ramiflora leaves and to determine its fungistatic potential on Lasiodiplodia theobromae. The ethanolic extract of dried and crushed leaves was obtained by maceration. Part of this extract was sequentially partitioned and the following fractions were obtained: hexane, dichloromethane, chloroform, ethyl acetate, n-butyl, and hydromethanol for subsequent bioassay, and qualitative and quantitative phytochemical analysis. Experimental development comprises of adding a L. theobromae mycelial disk (5 mm), obtained... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pathogen; Natural products; Organic farming; Flavonoids. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000400564 |
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| MARENCO,RICARDO ANTONIO; LUSTOSA,DENISE CASTRO. |
| Soil solarization is a technique used for weed and plant disease control in regions with high levels of solar radiation. The effect of solarization (0, 3, 6, and 9 weeks) upon weed populations, carrot (Daucus carota L. cv. Brasília) yield and nematode infestation in carrot roots was studied in São Luís (2º35' S; 44º10' W), MA, Brazil, using transparent polyethylene films (100 and 150 mm of thickness). The maximum temperature at 5 cm of depth was about 10ºC warmer in solarized soil than in control plots. In the study 20 weed types were recorded. Solarization reduced weed biomass and density in about 50% of weed species, including Cyperus spp., Chamaecrista nictans var. paraguariensis (Chod & Hassl.) Irwin & Barneby, Marsypianthes chamaedrys... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Commelina benghalensis; Cyperus; Organic farming; Soil heating; Mulching; Plastic film covers; Soil desinfection; Nematode controls; Sandy soil. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000001000014 |
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| Favarato,L.F.; Galvão,J.C.C.; Souza,J.L.; Guarçoni,R.C.; Souza,C.M.; Cunha,D.N.. |
| Currently, one of the biggest challenges faced by organic no-tillage farming is weed control. Thus, the use of cropping practices that help in the control of weeds is extremely important. The objective of this study was to evaluate population density and level of weed infestation in an organic no-tillage corn cropping system under different soil covers. The experiment was conducted in a randomized block design with six repetitions and five treatments, consisting of three soil covers in an organic no-tillage system, and an organic and a conventional system, both without soil cover. The treatments with soil cover used a grass species represented by the black oat, a leguminous species represented by the white lupine, and intercropping between both species.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avena strigosa; Lupinus albus; Straw; Organic farming. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000400008 |
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| Daugbjerg, Carsten; Tranter, Richard B.; Holloway, Garth J.. |
| There has been little systematic analysis of the extent to which organic farming policies have influenced growth in the organic sector. Analyses of organic farming policy instruments, for the most part, provide extensive and detailed reviews of instruments applied either in a single country or across countries. Hence, there is a great need to examine systematically whether there is a relationship between the introduction of organic farming policies and the growth of the organic food sector, and whether particular designs of organic farming policies are more effective than others. In this paper, we take the first step in the endeavour of analysing the effects of organic farming by undertaking an econometric analysis of the relationship between organic... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Organic farming; Policy; Agricultural and Food Policy; Farm Management. |
| Ano: 2008 |
URL: http://purl.umn.edu/44173 |
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| Karafillis, C.C.; Papanagiotou, Evangelos. |
| This paper measures the contribution of innovations in total factor productivity(TFP) of organic olive farmers. By constructing an innovation variable instead of the use of a time trend, technical change is replaced by technical difference and TFP growth becomes TFP difference. Primary cross section data on organic olive enterprises from a Greek region is used in the application of the restricted frontier profit function. Farmers are classified into groups according to their innovative ‘profile’. TFP difference among consecutive innovation groups is decomposed into technical difference and adjustment in innovativeness effects. Furthermore, efficiency differences among innovation groups are estimated. Results indicate that more innovative farmers perform... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Innovations; Total factor productivity; Profit efficiency; Organic farming; Greece; Productivity Analysis. |
| Ano: 2008 |
URL: http://purl.umn.edu/43645 |
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| Lohr, Luanne; Park, Timothy A.. |
| Responses from a national survey of U.S. organic farmers indicated dissatisfaction with the extension service. An ordered probit model was used to identify the factors influencing effectiveness ratings of extension advisors by farmers. Study findings show that part-time, higher income organic farmers who used a variety of highly rated private-sector information sources rated extension providers as more effective. Farmers in the Northeast and West regions rated extension usefulness more highly than in other regions. Not accounting for these demographic components in effectiveness ratings may result in under- or overestimation of results of organic-targeted extension programs. Extension agents can improve their usefulness to organic farmers by complementing... |
| Tipo: Journal Article |
Palavras-chave: Extension service; Ordered probit model; Organic farming; Teaching/Communication/Extension/Profession. |
| Ano: 2003 |
URL: http://purl.umn.edu/31055 |
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| Gyarmati, Gabor. |
| A hazai ökológiai gazdálkodás növekedési pályára állt az ezredforduló táján, de 2004-től a vállalkozások számának és az ökológiai művelés alá vont területek nagyságának növekedési mértéke csökkent, majd visszaesés következett be. Az ökológiai termelést végző vállalkozások nagy része jó adottságokkal rendelkező nagygazdaság, amelyek párhuzamos termelést folytatnak, és olyan elkötelezett kisvállalkozás, amelyek gazdasági súlya nem jelentős. Egyes rossz adottságú gazdaságok földjeiket átállítják ökológiai státuszra, a támogatás végett. A műve-lési ágak között nagyobb a gyep (rét, legelő, 53,6%) és alacsonyabb a szántó (26,4%) aránya. A gyepterületek könnyen átminősíthetők ökológiai területté, vi-szont gazdasági értékük nem jelentős. A vetésszerkezetben a... |
| Tipo: Journal Article |
Palavras-chave: Ökológiai gazdálkodás; Támogatás; Hazai-és xportpiac; Subsidies; Domestic and export market; Organic farming; Crop Production/Industries; Food Consumption/Nutrition/Food Safety; Land Economics/Use. |
| Ano: 2007 |
URL: http://purl.umn.edu/57645 |
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| Gardebroek, Cornelis. |
| Different views exist on the future development of organic agriculture. The Dutch government believes that in 2010 10% of the farm land will be used for organic farming. Others have a more radical view: due to increasing emphasis on sustainable production in the end all farming will be organic. Others believe in a more pessimistic scenario in which the recent growth in organic was just a temporary upswing and that the share of organic farmers already reached its maximum. In this paper different potential scenarios for the further growth of organic farming are evaluated using Bayesian techniques. A nonlinear logistic growth model explaining the share of organic farms is estimated using available historical data for Dutch agriculture. Various scenarios imply... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Organic farming; Bayesian analysis; Non-linear logistic growth curves; Farm Management. |
| Ano: 2008 |
URL: http://purl.umn.edu/44211 |
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| Kuhnert, Heike. |
| In 2001 the Federal Government of Germany formed by Social Democrats and Green Party declared a policy goal of 20 % of organic farming in Germany by 2010. This objective can only be achieved by behavioural changes of the actors within the food supply chain and consumers. Therefore, the proper political strategy has to be developed. The article starts with a theoretical overview of the social marketing approach. Then the social marketing approach is applied to the development of strategies and measures for the growth of organic production in Germany. The article concludes with a discussion of the suitability of the social marketing concept. |
| Tipo: Journal Article |
Palavras-chave: Organic farming; Social marketing; Strategy; Marketing-mix; Policy design; Policy implementation; Marketing. |
| Ano: 2006 |
URL: http://purl.umn.edu/97180 |
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| Registros recuperados: 90 | |
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