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Weed Control with Straw Residues in Occasional Direct Seeding of Faba Bean (Vicia faba sp.) in Organic Agriculture Organic Eprints
P. Massucati, Luiz F.; Köpke, Ulrich.
In order to gain momentum in the consolidation process of no-tillage systems in Europe’s Organic Agriculture, occasional direct seeding (DS) of faba bean (FAB) into a mulch layer of residues from precrop oats should be scrutinized. In contrast to non-legumes, grain legumes do not depend on soil-borne nitrogen due to their ability to fix nitrogen symbiotically. Concerning weed infestation, straw residues left by precrops may at least physically suppress weeds. In order to prove this hypothesis, two field experiments were carried out in 2009 at two sites in the lower Rhineland region, Germany. DS treatments were combined with 0, 4, and 6 t ha-1 of straw residues. Mouldboard ploughing (MP) combined with conventional seedbed preparation was used as control....
Tipo: Conference paper, poster, etc. Palavras-chave: Soil tillage; Weed management.
Ano: 2010 URL: http://orgprints.org/18099/1/Conservation_Agric_Conf_Massucati_Koepke__20101119.pdf
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Weed Cutter CombCut in Use Organic Eprints
Alföldi, Thomas.
The weed cutter CombCut is a new type of machine that a Swedish organic farmer has developed against thistles in cereals. The video shows that the use of the CombCut may be successful in particular situations. First of all, it can be used for a longer-term strategy against thistles or black grass. Beyond that, it is suitable for example in systems with reduced tillage and green manures after a mild winter, when the green manure crops such as mustard or Phacelia don’t freeze off and grow beyond the corn stock.
Tipo: Practice tool Palavras-chave: Weed management.
Ano: 2014 URL: http://orgprints.org/31161/1/video_.php_y%3Dhttps_%252F%252Fwww.youtube.com%252Fwatch_list%3DUUCoC0X8wJIEkpNkxYPYHEAQ%26v%3DVwD-p6FxaB0
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Weed Dynamics and Management in Wheat Organic Eprints
Melander, Bo; Jabran, Khawar; Mahmood, Khalid; Bajwa, Ali A.; Kudsk, Per.
Wheat is among the most important cereal and food crops of world and is grown in almost all parts of the world. It is a staple for a large part of the world population. Any decline in wheat yield by biotic or abiotic factors may affect global food security adversely. Weeds are the most damaging pest of wheat causing in total 24% losses in wheat grain yield. In this chapter, we discuss the (i) weed flora in different wheat growing regions of world; (ii) the yield losses caused by weeds in wheat; (iii) the preventive and cultural options for weed management; (iv) physical weed control;(v) chemical weed control; and (vi) integrated weed management strategy in wheat. A critical analysis of recent literature indicated that broadleaved weeds are the most...
Tipo: Journal paper Palavras-chave: Weed management.
Ano: 2017 URL: http://orgprints.org/32980/1/Advances%20in%20Agronomy%20Vol.%20145_chapter_3.pdf
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Weed flora and weed management of field peas in Finland Organic Eprints
Salonen, Jukka; Hyvönen, Terho; Jalli, Heikki.
The composition of the weed flora of dry pea (Pisum sativum L.) fields and cropping practices were investigated in southwestern Finland. Surveys were done in 2002–2003 in 119 conventionally cropped fields and 64 fields under organic cropping. Herbicides were applied to 92% of conventionally cropped fields where they provided relatively good control but were costly. Weeds were controlled mechanically only in five fields under organic production. A total of 76 weed species were recorded, of which 29 exceeded the 10% frequency level of occurrence. The average number of weed species per field was 10 under conventional cropping and 18 under organic cropping. The most frequent weed species in both cropping practices were Chenopodium album, Stellaria media and...
Tipo: Journal paper Palavras-chave: Weed management.
Ano: 2005 URL: http://orgprints.org/16760/1/salonen.pdf
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WEED FLORA IN A LONG-TERM REDUCED TILLAGE TRIAL, “TILMAN-ORG session” Organic Eprints
Armengot, Laura; Berner, Alfred; Mäder, Paul; Sans, F. Xavier.
Reduced tillage may improve the environmental and economic performance of organic farming. Reducing the intensity of soil tillage decreases the energy consumption and the emission of carbon dioxide, and could increase carbon sequestration (Holland 2004). Reduced tillage also may improve water retention and reduce soil erosion (Berner et al 2008). One of the main drawbacks of the reduced tillage practices is the potential increase of weed infestation and changes in weed species composition, sometimes to the benefit of species which are more difficult to control, such as perennial and grass species (Peigné et al 2007; Teasdale et al 2007; Sans et al 2011). Organic farmers commonly keep weeds under control by ploughing and by post-emergence mechanical...
Tipo: Conference paper, poster, etc. Palavras-chave: Soil tillage; Weed management.
Ano: 2014 URL: http://orgprints.org/23769/1/23769_def_MM.pdf
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Weed harrowing and inter-row hoeing in organic grown quinoa (Chenopodium quinoa Willd.) Organic Eprints
Jacobsen, Sven-Erik; Christiansen, J.L.; Rasmussen, Jesper.
Weeds, with their negative influence on both yield and quality, constitute a major problem in the organic production of quinoa, a potential new seed crop for protein feed and human consumption in Europe. To attain effective weed control, mechanical weeding strategies, such as weed harrowing and inter-row hoeing, were studied. Weed harrowing operates over the entire plot with flexible tines, affecting both crop and weeds, whereas inter-row hoeing is performed between the rows, aiming only at the weeds. The study showed that both hoeing and harrowing reduced the quinoa density in one out of two years, whereas there was no effect on quinoa density in the other year. Yield was increased by both methods, but hoeing increased yield more than harrowing due to...
Tipo: Journal paper Palavras-chave: Crop husbandry; Weed management.
Ano: 2010 URL: http://orgprints.org/18194/1/18194.pdf
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Weed harrowing in seeded onions Organic Eprints
Melander, Senior scientist Bo; Hartvig, Technician Peter.
Different aspects of using weed harrowing for weed control in organic onions are presented and discussed.
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 1995 URL: http://orgprints.org/1764/1/Weed_Harrowing.pdf
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Weed identification using an automated active shape matching (AASM) technique Organic Eprints
Swain, Kishore; Nørremark, Michael; Jørgensen, Rasmus N.; Midtiby, Henrik S.; Green, Ole.
Weed identification and control is a challenge for intercultural operations in agriculture. As an alternative to chemical pest control, a smart weed identification technique followed by mechanical weed control system could be developed. The proposed smart identification technique works on the concept of ‘active shape modelling’ to identify weed and crop plants based on their morphology. The automated active shape matching system (AASM) technique consisted of, i) a Pixelink camera ii) an LTI Lehrstuhlfuer technische informatik) image processing library, iii) a laptop pc with the Linux OS. A 2-leaf growth stage model for Solanum nigrum L. (nightshade) is generated from 32 segmented training images in Matlab software environment. Using the AASM algorithm, the...
Tipo: Journal paper Palavras-chave: Weed management.
Ano: 2011 URL: http://orgprints.org/20658/4/20658.pdf
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Weed Management and insects dynamics in selected organically produced vegetables in Usambara mountain valleys, Tanzania Organic Eprints
Saria, A.
The aim of this study was to study weeds control and insect dynamics in organically pro-duced vegetables using different mulching materials. Experiments were at Ubiri village (38° 21’ 59” E, 4° 50’ 29” S) and Lushoto town (38o 17’ 24” E, 4o 47’ 55” S) in Lushoto district, Tanga region. Six weed management practices were applied comprising two ‘dead’ organic mulching materials (dry shoots of Tithonia diversifolia and dry leaves of Pinus patula) each at 10cm and 15cm; solarisation achieved by covering the soil with transparent polyethylene sheets for four weeks; weeding twice (standard farmers practice) and unweeded check. Treatment arrangement was a split plot with crops as main plots and weed control treatments as subplots laid out in a randomized complete...
Tipo: Thesis Palavras-chave: Weed management.
Ano: 2013 URL: http://orgprints.org/30731/1/Adolf%20Saria%20Msc%20Final%20Thesis.pdf
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Weed management in cereals with cover crops - do they help of hinder? Organic Eprints
Salonen, Jukka.
Sustainable crop production calls for integrated weed management approaches. Cover crops (CCs) have been studied primarily in the context of soil fertility and soil structure but they might also supplement the weed management toolbox, particularly when adapted to long-term control strategies. The challenge in organic cropping is to provide strong weed suppression without severely compromising weed species diversity and crop yields. Several CC species, mainly sown in mixtures, were studied in organically cropped 3-year field experiments in southern Finland. The study was part of the PRODIVA project (Core Organic Plus 2015-2018) in which crop diversification for better weed management has been studied and presented in the 18th EWRS Symposium.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop combinations and interactions; Weed management.
Ano: 2018 URL: http://orgprints.org/33481/1/EWRS2018_PosterAbstract_Salonen.pdf
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Weed management in organic cropping systems Organic Eprints
Rasmussen, Ilse A..
The aim of this review is to provide an overview of weed control methods available for organic farming systems based on research mainly from Europe and North America, but measures mentioned here are not necessarily allowed in organic farming. Biological control of weeds is not considered in this review.
Tipo: Book chapter Palavras-chave: Weed management.
Ano: 2004 URL: http://orgprints.org/3937/1/3937.pdf
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Weed management in organic echinacea (Echinacea purpurea) and lettuce (Lactuca sativa) production Organic Eprints
Kristiansen, P.E.; Sindel, B.M.; Jessop, R.S..
Weed management is a major constraint in organic production. It can be expensive and time-consuming and severe crop yield losses may be incurred when weeds are not adequately controlled. Research on organic weed management (OWM) in herb and vegetable production is increasing internationally, although in Australia very little work has been done to assess current OWM knowledge among growers, and to test the efficacy and cost effectiveness of the weed management practices used by organic growers. The effect of hand weeding, tillage, hay mulch, pelletised paper mulch and an unweeded control treatment on weed growth, crop growth and cost effectiveness were evaluated in several field trials on the Northern Tablelands of New South Wales using lettuce (Lactuca...
Tipo: Journal paper Palavras-chave: Weed management.
Ano: 2008 URL: http://orgprints.org/14037/1/Kristiansen%2DRAFS%2Cweed.pdf
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Weed Management in Organic Farming in the New EU Member States and the Acceding Countries - Status Quo and Main Limitations Organic Eprints
Glemnitz, Michael; Radics, László; Mackensen, Kerstin.
Under the EU Specific Support Action (SSA) Project CHANNEL (“Opening Channels of Communication between the Associated Candidate Countries and the EU in Ecological Farming”), a survey on the status quo in weed management was conducted in 15 new member and acceding EU states. The focus of the data collection was on three main aspects relevant for the understanding of the current situation, they are: i.) legal and administrative framework, ii.) status quo in practice and iii.) scientific basis. These aspects were covered by separate questionnaires, addressed to different authorities and target groups. The results of the weed management questionnaire for the target group “experts engaged in practical farming” are presented in this paper. The analysis allowed...
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2007 URL: http://orgprints.org/9804/1/glemnitz%2Detal%2D2007%2Dweed_management.pdf
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Weed management methods in organic farming Organic Eprints
Zarina, Livija.
Programm and presentation from SPRING SEMINAR in Priekuli, 09.03.2017.
Tipo: Other Palavras-chave: Farming Systems; Weed management.
Ano: 2017 URL: http://orgprints.org/33080/1/Nez%EF%BF%BD%2581%C4%BCu%20ierobe%C5%BEo%26scaron%3Banas%20metodes%20biolo%C4%A3iskaj%EF%BF%BD%2581%20lauksaimniec%C4%ABb%EF%BF%BD%2581_09.03.2017_L.Zari%EF%BF%BD%2586a.pdf
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Weed management with cover crops in the Nordic-Baltic region - a snapshot from the references Organic Eprints
Salonen, Jukka; Koppelmäki, Kari; Känkänen, Hannu.
Cover crops have gained popularity in cereal cropping, where they improve soil fertility and quality. The potential for using cover crops in weed management is an interesting but little addressed option in organic arable crop production. Some comments on feasible measures for cereal production are extracted in this round-up from the references and information relevant to the Nordic-Baltic region.
Tipo: Working paper Palavras-chave: Crop combinations and interactions; Weed management.
Ano: 2017 URL: http://orgprints.org/32510/1/PRODIVA_CoverCrop_review2017_final.pdf
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Weed management with different mulches under organic strawberry production Organic Eprints
Kivijärvi, Pirjo.
Weed control efficacy of organic mulch materials is limited and is not as effective as the conventional plastic. Weed control efficiency also varies depending on the weed species.
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2006 URL: http://orgprints.org/10637/1/Lepaa.pdf
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Weed mapping activities in Scandinavia and Finland Organic Eprints
Hyvönen, Terho.
Weed mapping in Nordic countries; what has been done.
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2010 URL: http://orgprints.org/17858/1/hyvonen.pdf
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Weed occurrence in Finnish coastal regions: a survey of organically cropped spring cereals Organic Eprints
Riesinger, Paul; Hyvönen, Terho.
Weed communities of organically cropped spring cereal stands in the southern and the northwestern coastal regions of Finland (= south and northwest, respectively) were compared with respect to number of species, frequency of occurrence, density and dry weight. Regional specialization of agricultural production along with differences in climate and soil properties were expected to generate differences in weed communities between south and northwest. Total and average numbers of species were higher in the south than in the northwest (33 vs. 26 and 15.6 vs. 10.0, respectively). Some rare species (e.g. Papaver dubium) were found in the south. Fumaria officinalis and Lamium spp. were found only in the south. The densities and dry weights of Lapsana communis,...
Tipo: Journal paper Palavras-chave: Weed management.
Ano: 2006 URL: http://orgprints.org/17086/1/riesinger.pdf
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Weed problems in various tillage systems in the Nordic countries Organic Eprints
Tørresen, K.S.; Salonen, J.; Fogelfors, H.; Håkansson, S.; Melander, B..
There is an increasing use of various forms of reduced tillage or no-tillage in the Nordic countries. This will favour the growth of grass weed species and perennial species. Perennial creeping weeds like Elymus repens, Cirsium arvense, and Sonchus arvensis are important in all Nordic countries. Stationary weeds such as Taraxacum spp., Artemisia vulgaris and volunteer grassland species increase in areas with reduced tillage and especially no-tillage systems. Winter annual and biennial species such as Matricaria perforata, Poa annua, Alopecurus geniculatus and Stellaria media are frequently occuring weeds in reduced tillage systems in all countries, while Alopecurus myosuroides and Apera spica-venti are problems in Denmark and Southern parts of Sweden and...
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2006 URL: http://orgprints.org/16327/1/tillagee.pdf
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Weed problems in various tillage systems in the Nordic countries Organic Eprints
Tørresen, K.S.; Salonen, J.; Fogelfors, H.; Håkansson, S.; Melander, B..
This presentation deals with commonly seen weed problems associated with various tillage systems in the Nordic countries illustrated by results from some case studies.
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2006 URL: http://orgprints.org/16330/1/tillage1.pdf
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