Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 815
Primeira ... 333435363738394041 ... Última
Imagem não selecionada

Imprime registro no formato completo
Weed species diversity and cover-abundance in organic and conventional winter cereal fields and 15 years ago Organic Eprints
Kaar, B.; Freyer, B..
In this research, we compared the weed species development in conventional and organic winter cereals in Upper Austria. The investigations were done in 2003 in 15 paired conventional and organic farms. Following Braun-Blanquet procedure, a total of 105 weed species were found. 57 of them were found only in organic, four only in conventional fields and 48 in both. Therefore, there were 105 weed species in organic fields and 52 in conventional fields. More of the endangered species (Red List species) were found in organic fields. Low species diversity observed in 2003 compared to that in 1988 in the same field was attributed to higher temperature and low rainfall in the recent years. The question arises if under increasing temperature and dryness the...
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2008 URL: http://orgprints.org/12118/1/Kaar_12118_ed.doc
Imagem não selecionada

Imprime registro no formato completo
Weed suppressive ability of crop mixtures Organic Eprints
Pers Berglund, Anna.
In order to assess the weed suppressive ability of a pea/barley crop mixture and the component crops in sole cropping, a controlled outdoor experiment was performed at The Swedish University of Agricultural Sciences, Ultuna, Sweden, in the summer of 2015. A substitutive completely randomized ex-perimental design was used with seven treatments and six replicates. The weed species planted in the experiment was Elytrigia repens (L.) Desv. ex Nevski. At three occasions leaf area index (LAI) was optically measured using a LAI-2200C Plant Canopy Analyzer. Two destructive harvests were taken in order to assess the biomass of different plant parts from each of the component species. At the first harvest leaf area was measured in order to calibrate the optical LAI...
Tipo: Thesis Palavras-chave: Production systems; Biodiversity and ecosystem services; Weed management.
Ano: 2016 URL: http://orgprints.org/33111/1/pers_berglund_a_161129.pdf
Imagem não selecionada

Imprime registro no formato completo
Weeds as soil bioindicators: How to sample and use data Organic Eprints
Carlesi, Stefano; Barberi, Paolo.
This technical note shows how weed species can be used as indicators of soil conditions that are either linked to soil characteristics (such as soil pH or texture) or to soil management (such as water logging, lack or excess of nutrients, compaction). It should be stressed that (i) this kind of analysis does not always provide consistent results, because the relationship between weed species and soil conditions is not always clear cut and that (ii) the suggested sampling methodology requires some basic botanical skills for weed identification.
Tipo: Report Palavras-chave: Soil quality; Weed management.
Ano: 2017 URL: http://orgprints.org/31696/1/Carlesi-Barberi-2017-bioindicators-TechnicalNote-FertilCrop.pdf
Imagem não selecionada

Imprime registro no formato completo
Welchen Einfluss hat die Dauer der biologischen Bewirtschaftung auf den Ertrag und die Biodiversität im Maisanbau? Ergebnisse einer Praxisstudie Organic Eprints
van der Heijden, Marcel; Wittwer, Raphael; Honegger, Adi; Hegglin, Django.
Organic farming is popular, and an increasing number of conventional farmers consider to convert to organic farming. For those converting, and for policy makers, it is important to know whether plant yield changes with the duration of organic management and whether other aspects of organic management (e. g. weed abundance or enhanced weed diversity) increase over time. In order to test this, we compared maize yield on 34 farms: 9 conventional farms, 9 farms which recently converted to organic farming as well as 16 farms which were managed organically for 9-32 years. We also determined the number and abundance of weed species in each field. Maize yield was not affected by the duration of organic management, although N input was approximately 35 % lower on...
Tipo: Conference paper, poster, etc. Palavras-chave: "Organics" in general; Weed management.
Ano: 2013 URL: http://orgprints.org/21468/1/21468_vanHeijden.pdf
Imagem não selecionada

Imprime registro no formato completo
What makes a weed a weed? A large- scale evaluation of arable weeds through a functional lens Organic Eprints
Bourgeois, Bérenger; Munoz, Francois; Fried, Guillaume; Mahaut, Lucie; Armengot, Laura; Denelle, Pierre; Storkey, Jonathan; Gaba, Sabrina; Violle, Cyrille.
PREMISE OF THE STUDY: Despite long-term research efforts, a comprehensive perspective on the ecological and functional properties determining plant weediness is still lacking. We investigated here key functional attributes of arable weeds compared to non-weed plants, at large spatial scale. METHODS: We used an intensive survey of plant communities in cultivated and non-cultivated habitats to define a pool of plants occurring in arable fields (weeds) and one of plants occurring only in open non-arable habitats (non-weeds) in France. We compared the two pools based on nine functional traits and three functional spaces (LHS, reproductive and resource requirement hypervolumes). Within the weed pool, we quantified the trait variation of weeds along a...
Tipo: Journal paper Palavras-chave: Biodiversity and ecosystem services; Weed management.
Ano: 2019 URL: http://orgprints.org/36356/1/Bourgeois_etal_2019_AmJBot-Vol106-Issue1-p90-100.pdf
Imagem não selecionada

Imprime registro no formato completo
Wirkung von reduzierter Bodenbearbeitung und Gründüngung im Ökologischen Landbau auf den Beikrautbesatz Organic Eprints
Grosse, Meike; Haase, Thorsten; Heß, Jürgen.
Reduzierte Bodenbearbeitung und Gründüngung haben das Potenzial, Anbausysteme im Ökologischen Landbau weiter zu verbessern, wenn sie an die spezifischen Bedingungen des Ökologischen Landbaus angepasst werden. Ein Ziel des europäischen Forschungsprojektes „TILMAN ORG“ (www.tilman-org.net) ist es, eine wirksamere Beikrautregulierung bei gleichzeitig erhöhter Biodiversität durch den verbesserten Einsatz von Gründüngung innerhalb verschiedener Szenarien reduzierter Bodenbearbeitung zu entwickeln. Die Ergebnisse eines wiederholten einjährigen Feldversuches auf der Domäne Frankenhausen, dem Versuchsgut der Universität Kassel, hinsichtlich der Wirkung unterschiedlicher legumer und nicht-legumer Gründüngungsarten in vier verschiedenen Bodenbearbeitungssystemen...
Tipo: Conference paper, poster, etc. Palavras-chave: Soil tillage; Weed management.
Ano: 2014 URL: http://orgprints.org/26658/1/Grosse-Haase-Hess-2014-Beikraut-tilmanorg.pdf
Imagem não selecionada

Imprime registro no formato completo
Wirkungen differenzierter Bodenbearbeitungssysteme im Dauerversuch Scheyern Organic Eprints
Kainz, M; Gerl, G; Lemnitzer, B; Bauchenß, J; Hülsbergen, K-J.
After a 12-year differing tillage in a 7-phase crop rotation with lay, potatoes, wheat, sunflowers, lay, wheat and rye it was found, that mouldboard-ploughing (P) resulted in less weed. Crop yields were as high as in the treatment with ploughing after lay and chiselling after potatoes and sunflowers (B). Lowest yields were obtained without ploughing but using the chisel (G). Weeds, esp. grasses, resulted in a huge competition for crops esp. after lay. Profit margins were highest in B due to lower expenditures for tillage and lowest in G. Soil organic carbon amounts differed by 1,5 t/ha and earthworm biomass by 0,25 t/ha between P and G after 12 years. It can be summed up for this experiment that G was not sustainable due to weeds and declining yields, and...
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management; Farming Systems; Soil biology; Soil tillage.
Ano: 2005 URL: http://orgprints.org/3651/2/3651.pdf
Imagem não selecionada

Imprime registro no formato completo
Work package 2: Crop mixtures for weed suppression Organic Eprints
Krawczyk, Roman.
Annual meeting of project PRODIVA, CoreOrganic 18th and 19th, March 2015 , Rostock, Germany
Tipo: Other Palavras-chave: Weed management.
Ano: 2016 URL: http://orgprints.org/30980/1/PRODIVA_WP2-Poland_annual%20meeting2016_Roman.pdf
Imagem não selecionada

Imprime registro no formato completo
Wuzi bekämpft Ampfer maschinell Organic Eprints
Böhm, Herwart.
"Wuzi" - hinter diesem Namen verbirgt sich eine neue selbstfahrende Wurzelstechmaschine zur Bekämpfung des Ampfers.
Tipo: Journal paper Palavras-chave: Weed management.
Ano: 2004 URL: http://orgprints.org/15134/1/Boehm%2D2004%2DTASPO%2Dwuzi.pdf
Imagem não selecionada

Imprime registro no formato completo
Yield Response to Type of Mulch and Time of Mulch Application in Organic Production of Tomato(SOLANUM LYCOPERSICUM L.) Organic Eprints
Shechambo, L.; Sibuga, K. P.; Msogoya, T.J.; Sigsgaard, L..
Mulching in organic agriculture is important for a variety of roles it performs. Mexican weeping pine (Pinus patula Schelde. ex Schltdl and Cham) and wild lemon grass (Cymbopogon spp.) were used as mulch to evaluate the effect of type of mulch, time of applying mulch and influence of seasons on yield of organically produced tomato (Solanum lycopersicum L.) in Lushoto district, north-eastern Tanzania. The experiment followed a Randomised Complete Block Design (RCBD). The treatments were pine mulch applied 3 days after transplanting, pine mulch applied 3 weeks after transplanting, grass mulch applied 3 days after transplanting, grass mulch applied 3 weeks after transplanting, weeded and unweeded (control). Yield data were taken at harvesting. Data analysis...
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2015 URL: http://orgprints.org/28883/1/Organic%20conference%20paper-Lilian%20Shechambo.docx
Imagem não selecionada

Imprime registro no formato completo
Yield responses of weed-free seeded onions [Allium cepa (L.)] to hoeing close to the row Organic Eprints
Melander, Senior scientist Bo; Hartvig, Technicians Peter.
The paper contains results from field experiments looking at the possibilities for hoeing very close to the crop row in seeded onions.
Tipo: Journal paper Palavras-chave: Weed management.
Ano: 1997 URL: http://orgprints.org/1763/1/Yield_responses.pdf
Imagem não selecionada

Imprime registro no formato completo
Začlenění systému povrchového mulčování do technologie pěstování brambor Organic Eprints
Dvorak, Petr; Tomasek, Jaroslav; Hamouz, Karel; Micak, Libor.
Předkládaná interpretace výsledků výzkumu získaných na základě víceletých polních pokusů přináší návody a zkušenosti o využití povrchového mulčování u brambor. Na základě dostupných informací a nynějších možností využití mulčovacích prostředků byly do pokusů vybrány alternativy, které lze bez větší problémů začlenit mezi agrotechnická opatření při pěstování brambor. A to s možností lokální aplikace (s cílem zmírnit vodní erozi, a tím i degradaci půdy) či plošné aplikace, která přináší i další významné benefity zejména do podmínek (systému hospodaření), kde je omezeno např. použití herbicidů či insekticidů. Např. v systému ekologického hospodaření pro regulaci plevelů či mandelinky bramborové, a také pro regulaci teplotních a vláhových podmínek v porostu a...
Tipo: Book Palavras-chave: Soil tillage; Weed management.
Ano: 2013 URL: http://orgprints.org/23216/1/Metodika%20mul%C4%8Dov%C3%A1n%C3%AD_new.pdf
Imagem não selecionada

Imprime registro no formato completo
Zuckerrüben: Anspruchsvoll, aber toll Organic Eprints
Hirschi, Christian.
Der biologische Anbau von Zuckerrüben birgt Risiken, kann aber sehr interessant sein. Die Nachfrage ist gross.
Tipo: Newspaper or magazine article Palavras-chave: Weed management; Root crops.
Ano: 2019 URL: http://orgprints.org/34806/1/Bioaktuell-2-2019-Hirschi.pdf
Imagem não selecionada

Imprime registro no formato completo
Zur Bedeutung einer stark gegliederten Feldflur für die Entwicklung von Ackerwildkraut-Gesellschaften. Beispiele aus Thüringen und Nordhessen. Organic Eprints
van Elsen, Thomas; Scheller, Ute.
Die regionale Gliederung der Feldflur unterscheidet sich je nach Nutzungsgeschichte der Agrarlandschaft erheblich. Die Bedeutung einer stark gegliederten Feldflur für artenreiche Ackerwildkraut-Gesekkschaften wird anhand floristischer und vegetationskundlicher Untersuchungen in zwei benachbarten Gebieten beiderseits der hessisch-thüringischen Grenze dargestellt. Teile des nordhessischen Werra-Meißner-Kreises sind noch heute durch eine infolge Realteilungs-Erbrechts zersplitterte Feldflur und das Vorherrschen von Nebenerwerbs-Landwirtschaft geprägt, während im thüringischen Obereichsfeld die großflächige Bewirtschaftung durch LPG-Nachfolgeorganisationen dominiert. Die erfolgte Ausräumung der Agrarlandschaft und der damit verbundene Verlust an...
Tipo: Journal paper Palavras-chave: Weed management; Biodiversity and ecosystem services.
Ano: 1994 URL: http://orgprints.org/4801/1/vE_Scheller_1994.pdf
Imagem não selecionada

Imprime registro no formato completo
Zwischenfrüchte im pfluglosen System Organic Eprints
Grosse, Meike; Heß, Jürgen.
Wenn Bio-Ackerbauern auf die tief wendende Bodenbearbeitung verzichten, brauchen sie verlässliche Zwischenfrüchte gegen Beikraut. Forschungsergebnisse eines wiederholten einjährigen Versuchs auf dem Versuchsgut der Universität Kassel zeigen große Unterschiede zwischen den getesteten drei Zwischenfruchtarten Gelbsenf, Perserklee und Sommerwicke. Die Ergebnisse zum Beikrautunterdrückungspotenzial der Zwischenfrüchte und zum Ertrag der auf die Zwischenfrüchte folgenden Hauptfrucht Hafer werden in diesem Artikel dargestellt.
Tipo: Newspaper or magazine article Palavras-chave: Crop combinations and interactions; Soil tillage; Weed management.
Ano: 2016 URL: http://orgprints.org/29731/1/bioland_01_2016_Zwischenfruechte_im_pfluglosen_System.pdf
Registros recuperados: 815
Primeira ... 333435363738394041 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional