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| Registros recuperados: 95 | |
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| Gonçalves, Christophe; Guiné, Raquel P.F.; Gonçalves, Fernando; Costa, Daniela. |
| This work studied the effect of production mode (organic versus conventional) and storage conditions on some physical and chemical properties of blueberry from different cultivars, namely Duke, Bluecrop, and Ozarkblue. The physical properties evaluated were caliber, color and texture and the chemical characteristics analyzed were moisture content, total soluble solids and acidity. Furthermore, the effect of storage on these properties was also evaluated.The results showed that blueberries cv. Duke were bigger, with a more intense coloration, and presented a harder and more elastic texture, when compared with the other cultivars at study. With respect to production mode it was found that the blueberries produced in organic farming were not so acid or sweet,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Postharvest conservation food processing; Food analysis Blueberry; Conservation; Color; Organic farming; Texture.. |
| Ano: 2017 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4115 |
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| Feitosa,Jardenia R.; Mendes,Alessandra M.S.; Olszevski,Nelci; Cunha,Tony J.F.; Cortez,Jorge W.; Giongo,Vanderlise. |
| The purpose of this study was to evaluate the effects of organic farming of wine grapes under physical and chemical characteristics of Ultisol Brazil's northeastern semiarid region. The samples of soil were collected from the row and interrow of the farming and from the fallow area, at the depths of 0.0-0.10, 0.10-0.20, 0.20-0.30 and 0.30-0.60 m. The samples were collected at six and twelve months after the culture implementation to evaluate the state of aggregation, bulk density and total soil porosity, flocculation index and organic matter contents, calcium, magnesium, and sodium. The results were submitted to statistical analysis. The adoption of organic farming contributed to the soil aggregation process. The bulk density and total soil porosity did... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aggregate stability; Organic farming; Soil quality; Vitiviniculture. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100483 |
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| Castro,Nilmar Eduardo Arbex de; Pinto,José Eduardo Brasil Pereira; Cardoso,Maria das Graças; Morais,Augusto Ramalho de; Bertolucci,Suzan Kelly V.; Silva,Fabiano Guimarães da; Delú Filho,Nelson. |
| The objective of this work was to evaluate the yield of calyxes of Hibiscus sabdariffa L, a medicinal plant, at four planting times in Lavras - MG. The treatments were four planting times (October 18th, November 15th, December 18th 2001 and January 15th 2002) and a harvest was proceeded when practically there were no developing calyxes, almost at the end of the plant cycle. The numbers of calyxes per plant, the fresh and dry biomasses of calyxes and quality were taken into account. It follows that planting time influenced yield per plant and the fresh and dry biomasses of calyxes, differing from each other by Tukey test at 5%. In October planting, there was a higher yield (2,522kg/ha) with a yield 5.24 as high relative to the planting of the month of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic farming; Calyx; Medicinal plant; Yield; Vinegar plant. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542004000300009 |
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| Farias,Elaine Aparecida de Paula; Ferreira,Regina Lúcia Félix; Araújo Neto,Sebastião Elviro de; Costa,Fabiana Cruz; Nascimento,Damaris Suelen. |
| The production of organically grown tomatoes in the Amazonian region of Brazil is difficult due to inherent phytosanitary issues. The objectives of the present investigation were to evaluate the productivity of grafted tomato plants (Solanumlycopersicum cv. Santa Adélia) grown organically in Rio Branco, Acre, Brazil, and to assess scion/rootstock compatibility under organic growth conditions. The Solanum species employed as rootstocks were S. gilo (jiló), S. lycocarpum (jurubebão), S. stramonifolium (jurubeba vermelha) and S. viarum (joá), while the susceptible S.lycopersicum cultivar Santa Adélia was the scion. Ungrafted tomato plants and tomato grafted on tomato rootstock were employed as controls. The experiment was arranged in a completely randomized... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic farming; Grafting; Productivity. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000400005 |
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| Spagnolo,Roger Toscan; Oldoni,André; Custódio,Tiago Vega; Reis,Ângelo Vieira dos; Machado,Antônio Lilles Tavares. |
| ABSTRACT: One of the difficulties faced by organic food farming families is weed management without the application of chemical products. Thus, this study aimed to establish the design specifications for the development of a heat applicator device for small organic family farms. The implemented methodology allowed the division of the project to phases composed by different tasks. This paper addresses the informational phase, which identifies client needs, according to the lifecycle of the product, in order to establish the design specifications. The declared needs of 40 customers were identified and converted to the requirements of 24 clients. This resulted in 26 design specifications, displayed in order of importance, and distributed along the product’s... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Informational design; Product development; Organic farming. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000200351 |
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| Viana,Eliseth de Souza; Reis,Ronielli Cardoso; Rosa,Raul Castro Carriello; Pádua,Tullio Raphael Pereira de; Matos,Aristóteles Pires de. |
| ABSTRACT: Type of fertilizer and doses used are factors that influence the quality of pineapple fruit. This study aimed to evaluate the physico-chemical and sensorial quality of organically grown ‘Pérola’ pineapple and recommend the effective dose for best fruit quality, especially regarding sensorial acceptance. Effect of doses of 10, 20, 30, 40 and 50 t ha-1 of “bokashi” organic fertilizer on color, weight, pH, titratable acidity, soluble solids, soluble solids/titratable acidity ratio (SS/TA), vitamin C content, sensory acceptance and purchase intention was evaluated. Increasing doses of bokashi positively influenced weight and titratable acidity of the fruits and negatively affected the SS/TA ratio. Fruits produced with doses between 20t ha-1 and 40t... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pineapple cultivation; Organic farming; Bokashi; Sensory analysis. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000700204 |
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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,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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| 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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| JANTALIA, C. P.; ARAÚJO, E. da S.; FERREIRA, R. G.; SILVA, L. L. G. G. da; ABOIM, M. C. R.; ARAÚJO, D. A. de; PINHEIRO, E. M.; MIRANDA, E. M. de; ABBOUD, A. C. de S.; COSTA, J. R.; URQUIAGA, S.; BODDEY, R. M.; ALVES, B. J. R.. |
| Quantificação dos fluxos de N2O. Levantamento dos pesos de cada variável pela análise multivariada por componentes principais. Avaliação ambiental quanto ao potencial de emissão de óxido nitroso. |
| Tipo: Folhetos |
Palavras-chave: Farming system; Cultural methods; Organic farming; Agricultura Orgânica; Pratica Cultural; Sistema de Produção. |
| Ano: 2005 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/628251 |
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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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| Registros recuperados: 95 | |
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