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| Registros recuperados: 816 | |
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| Parveaud, Claude-Eric; Gomez, Christelle; Bussi, Claude; Capowiez, Yvan. |
| In conventional orchards, weeds on the raw are mainly controlled with chemical herbicides because of their efficiency, their low cost and ease of use. The most common method in organic orchard to eliminate weeds on the raw consists of tillage operations. However, some drawbacks of these mechanical methods have been demonstrated: (1) the energetic cost (non-renewable energy) is high, (2) this method is time-consuming, (3) tillage interferes with the development of superficial roots and can hurt the trunk, (4) the physical, chemical and biological properties of the soil can be disturb and (5) erosion and runoff potentially increase. Cover crops are interesting alternatives to manage ground cover but the effect on the agronomic properties and the soil... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil biology; Soil tillage; Weed management. |
| Ano: 2010 |
URL: http://orgprints.org/17223/1/Poster_Soil_Fertility_IHC_V4.pdf |
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| Fittje, Susanne; Hänsel, Martin; Langsenkamp, Frederik; Kielhorn, Arnd; Trautz, Dieter. |
| Der Beitrag beschreibt Erhebungen zum Aufwand und Erfolg der mechanischen Beikrautregulierung im ökologischen Möhrenanbau, die über 3 Jahre auf 6 Praxisflächen in Sachsen und Niedersachsen zum Zweck des Vergleichs zu einem in der Entwicklung befindlichen Robotersystem (Projekt „RemoteFarming.1“) erhoben wurden. Die zeit- und kostenintensiven Beikrautregulierungsmaßnahmen die z.T. von Hand durchgeführt werden müssen, werden wegen des großen Einflusses des Beikrautbesatzes auf den Ertrag (Minderung bis zu 80%) in Kauf genommen. Die Anzahl Beikräuter schwankte sehr stark zwischen 7 bis 256 Pflanzen je Meter Möhrenreihe und es trat eine sehr große Varianz von 80-430 Jätestunden pro ha und Jahr auf. Zudem war der Regulierungserfolg stark von den einzelnen... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2015 |
URL: http://orgprints.org/27154/1/27154_fittje.pdf |
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| There is a more detailed Executive Summary at the top of the attached document, which is the final report for Defra Project OF0177. The project aimed to examine the organic extension of a simple mechanistically-based growth and competition model, calibrated to data originally gained from conventional vegetable production. Essentially the model simulation follows the growth of each crop and weed plant as they compete for space and light during and after canopy closure. The growth and competition model has been modified to simulate crop and weed growth of multiple cohorts so that the onset of crop weed competition can be predicted. This onset of competition marks the point when it is essential to remove weeds (i.e. critical weeding time); otherwise, there... |
| Tipo: Report |
Palavras-chave: Weed management; Vegetables; Technology transfer. |
| Ano: 2002 |
URL: http://orgprints.org/7998/1/OF0177_2155_FRP.pdf |
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| Casagrande, Marion; Peigne, Joséphine; David, Christophe; Sans, Francesc Xavier; Blanco-Moreno, José Manuel; Cooper, Julia; Gascoyne, Kate; Antichi, Daniele; Bàrberi, Paolo; Bigongiali, Federica; Surböck, Andreas; Kranzler, Andreas; Beeckman, Annelies; Willekens, Koen; Luik, Anne; Peetsmann, Elen; Grosse, Meike; Heß, Jürgen; Clerc, Maurice; Dierauer, Hansueli; Mäder, Paul. |
| As conservation agriculture and organic farming are currently considered as environmentally friendly options for producing food, this study explores the motivations and problems of organic European farmers that apply at least two of the following techniques: (i) no-tillage, (ii) reduced tillage and/or (iii) green manures conservation practices. We carried out a survey about motivations and problems of 159 farmers located in 10 European countries with a questionnaire with closed-ended questions. Data were analysis with a principal component analysis followed by clustering to identify groups of farmers that share the same type of motivations and problems. The most important motivations are related to soil preservation concerns and problems are mainly linked... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Surveys and statistics; Social aspects; Soil tillage; Weed management. |
| Ano: 2014 |
URL: http://orgprints.org/23939/1/23939_revised%20version_MM.pdf |
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| Heilmann, Hartmut. |
| Even if an existing agricultural holistic production system works without specific measures of control of CIRSIUM ARVENSE (L.) SCOP. scientific questions of pedogene probiotic aspects are left to be answered. Changes in soil structure and pH-Value are not as much due to the conditions of soil but depend on the influences of the Creeping thistle. Thistle growth, rhizome dormancy and subterranean embryogeny depend on microbial conditions in the soil which should be controlled. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2011 |
URL: http://orgprints.org/17767/3/Heilmann_17767.pdf |
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| Hotze, C.; van Elsen, T.. |
| Das östliche Meißnervorland in Nordhessen ist als besonders artenreiches Refugium selten gewordener Ackerwildkräuter bekannt. Auf den bereits 1975 und 1990 floristisch gut untersuchten Ackerflächen wurden mit 348 Vegetationsaufnahmen im Jahre 2002 erneut Daten zur aktuellen Segetalvegetation erhoben. Die pflanzensoziologische Vergesellschaftung der Arten und deren Entwicklung wird, differenziert für die Rand- und Innenbereiche der Felder, vorgestellt. Seltene Pflanzengemeinschaften, wie z.B. die Haftdolden-Adonisröschen-Gesellschaft, sind nach wie vor im Gebiet vorhanden, jedoch zunehmend floristisch verarmt und beschränkt auf die Randbereiche von Feldern. Gut zwei Drittel der Aufnahmen im Innenbereich der Flächen lassen sich heute aus Mangel an Arten... |
| Tipo: Journal paper |
Palavras-chave: Weed management; Biodiversity and ecosystem services. |
| Ano: 2006 |
URL: http://orgprints.org/8679/1/Hotze%2DvanElsen%2D2006%2DZ.PflKrankh.PflSchutz%2D505.pdf |
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| Olsen, Lars Egelund. |
| Video om radrensning af stub. I forsøget er rødkløver sået som efterafgrøder mellem rækkerne (25 cm rækkeafstand) af havre. Efter høst fjernes stubbene med radrenseren, som er kamerastyret. Rødkløveren er en stærk efterafgrøde, som bekæmper rodukrudt effektivt. Perspektiverne er et dyrkningssystem, hvor der er styr på rodukrudtet og en efterafgrøde, som samler næringsstofferne. |
| Tipo: Video |
Palavras-chave: Weed management; Post harvest management and techniques. |
| Ano: 2015 |
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| Pekrun, Carola; Claupein, Wilhelm. |
| In practical farming early and shallow stubble tillage post-harvest is carried out to stimulate germination of freshly ripened crop and weed seeds, to kill the resulting seedlings and hence to reduce the input into the soil seedbank. Additionally, it aims at reducing perennial weeds by mechanical damage. In this paper field experiments and laboratory studies are presented which show that stubble tillage can reduce perennial weeds. However, it had a variable effect on annual weeds. After five years of experimentation, no effect of stubble tillage was seen when looking at the aboveground vegetation. In contrast, the soil seedbank of the control roughly doubled the seedbank of plots where stubble tillage had been carried out immediately after harvest. These... |
| Tipo: Journal paper |
Palavras-chave: Weed management; Soil tillage. |
| Ano: 2006 |
URL: http://orgprints.org/8983/1/pekrun_2006_stubble_tillage_uni_hohenheim.pdf |
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| Crowley, Oliver; Döring, Thomas F.; Measures, Mark. |
| Organic farming practices aim to maximise the delivery of ecosystem services in the agricultural landscape. However, in order to maintain optimal crop productivity the mouldboard plough is often used to control weeds and this can have negative effects on a range of soil parameters, thereby jeopardizing delivery of these services. Reduced tillage (RT) can be beneficial to soils and could improve both the efficiency of production and the delivery of ecosystem services on organic farms. However, abandoning the plough on organic farms is challenging due to impaired weed control. Here we report on a two year trial where an RT system with the Ecodyn, with duck feet shares operating at a depth of 7.6 cm in combination with seed drilling, was compared with... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil tillage; Soil; Biodiversity and ecosystem services; Weed management. |
| Ano: 2012 |
URL: http://orgprints.org/20721/1/Crowley_et_al_2012_Reduced_tillage_and_ecosystem_service_delivery_on_organic_farms.pdf |
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| Pekrun, Carola; Häuser, Inga; Claupein, Wilhelm. |
| Mit der Stoppelbearbeitung sollen ausgefallene Kultur- und Unkrautpflanzensamen zur Keimung angeregt und in den nachfolgenden Bearbeitungsgängen vernichtet werden, um so die Anzahl der neu zur Population hinzukommenden Individuen so gering wie möglich zu halten. In Feldversuchen zur Wirkung der Stoppelbearbeitung wurde keine populationsmindernde Wirkung der Stoppelbearbeitung auf annuelle Unkräuter festgestellt (z.B. KOCH & RADEMACHER, 1966; BOSTRÖM et al., 2000; PEKRUN & CLAUPEIN, 2001). Mit der oberirdischen Population der Unkräuter wird jeweils nur ein Teil der Population erfasst. In diesen Erhebungen wurde der Versuch unternommen, durch zusätzliche Erhebung des Bodensamenvorrats die Wirkung der Stoppelbearbeitung auf die Gesamtpopulation zu... |
| Tipo: Journal paper |
Palavras-chave: Weed management; Soil tillage. |
| Ano: 2002 |
URL: http://orgprints.org/1263/1/1263%2Dpekrun%2Det%2Dal%2D2002%2Dbodensamen.pdf |
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| Melander, Bo; Green, Ole; Znova, Liubava. |
| Flex-tine weed harrowing conducted as a full-width operation treating both crop and weeds is the principal method for direct weed control in organic spring cereals in Northern Europe. Results with this technology have varied considerably where especially crop injuries and control failures against tall-growing and tap-rooted weed species have been major drawbacks. New camera technology capable of detecting crop rows makes it possible to employ selective weed control in spring cereals. Normally cereals are grown at 12.5 cm row spacing in Northern Europe but even a moderate extension of the row spacing can make enough room for implementing automatically steered inter-row hoeing. Experiences from practice have shown that camera-based steering systems can guide... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2016 |
URL: http://orgprints.org/29975/1/Abstract%20no.%20461.pdf |
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| Registros recuperados: 816 | |
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