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Comparison of three tillage intensities on grass weed occurrence in cereal rotation Organic Eprints
Salonen, Jukka.
In general, a rapid infestation of grass weeds was demonstrated in the plots with direct drilling. On the contrary, hardly any grass weeds infested the ploughed plots. The proportion between grass weeds and broad-leaved weeds differed in three tillage systems.
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2009 URL: http://orgprints.org/15777/1/Salonen.doc
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Competition and complementarity in annual intercrops - the role of plant available nutrients Organic Eprints
Andersen, Mette Klindt.
In the developed regions of the world crops are today primarily grown as sole crops and monocultures. However, increasing awareness of the link between agricultural practise, environmental issues and long-term stability of existing food production systems has put focus on the role that greater crop diversity in time (crop rotation) and space (field size and mixed cropping systems) may play in reducing the extent of these problems. Intercropping represents one way of increasing crop diversity. As a result of differences in the way component crops respond to and affect the environment in which they are grown intercrops may use available growth resources (light, water and nutrients) more efficiently, reduce the prevalence of disease and pests and reduce weed...
Tipo: Thesis Palavras-chave: Nutrient turnover; Crop combinations and interactions; Weed management; Biodiversity and ecosystem services.
Ano: 2005 URL: http://orgprints.org/6003/1/6003.pdf
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Competitive ability of Rumex obtusifolius against native grassland species: above- and belowground allocation of biomass and nutrients Organic Eprints
Zaller, Johann G.
Understanding the competitive ability of Rumex obtusifolius against grassland species is essential for developing efficient control strategies against docks. Here we present results from a greenhouse experiment where we tested shoot and root competition between Rumex regenerating from rhizome fragments and grassland species (grasses, herbaceous and leguminous species). Competitive ability was expressed as the relative above- and belowground biomass partitioning and, concentrations and allocation of carbon and nitrogen of the plant species studied. Regeneration of Rumex was significantly affected by competition through neighbouring native grassland species. Rumex responded to concurrent shoot and root competition of grassland species with 50% more...
Tipo: Journal paper Palavras-chave: Biodiversity and ecosystem services; Weed management.
Ano: 2004 URL: http://orgprints.org/18280/1/Zaller_2004JPDP.pdf
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Competitive Nitrogen Uptake of Creeping Thistle (C. arvense) and Spring Barley from different soil depths Organic Eprints
Wacker, Tomke Susanne.
The effect of cover crops on nitrogen uptake and competition between thistles and a barley crop was studied using 15N labelling of the autumn soil N pool. The effects was followed by soil and plant measurements of 15N enrichment in the following year, in plots where 15N had been added to plots grown with cover crops or plots subjected to autumn tillage
Tipo: Thesis Palavras-chave: Crop combinations and interactions; Nutrient turnover; Soil tillage; Weed management; Post harvest management and techniques.
Ano: 2017 URL: http://orgprints.org/33092/1/final.pdf
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Composition of weed flora in spring cereals in Finland - a fourth survey Organic Eprints
Salonen, Jukka; Hyvönen, Terho; Jalli, Heikki.
The weed flora in conventionally and organically grown spring cereals was investigated in southern and central Finland during 2007–2009. The survey was conducted in 16 regions, 283 farms and 595 fields (72 organically cropped and 523 conventionally cropped fields, of which 503 were treated with herbicides). The occurrence of weeds was assessed in late July–early August. Altogether 148 weed species were identified, of which 128 were broad-leaved and 20 grass species. In organically cropped fields, the average species number per field was 21 and the most frequent species were Chenopodium album 96%, Stellaria media 94%, Viola arvensis 94% and Elymus repens 89%. In conventionally cropped fields, the average species number was 12 and the most frequent weed...
Tipo: Journal paper Palavras-chave: Weed management.
Ano: 2011 URL: http://orgprints.org/19399/1/SALONEN.pdf
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Computer model for simulating the long-term dynamics of annual weeds Organic Eprints
Rasmussen, Ilse A.; Holst, Niels.
A simulation model of the population dynamics of annual weeds and how it is affected by crop rotation, cultivation practices and weed control was presented by Rasmussen et al. (2002). The model aims to predict the development of a certain weed species in order to plan crop rotation and cultivation practices to minimise the risk of proliferation. The model does not predict the exact number of weeds expected to be found in a certain year or crop, but rather the general development over a number of years. It included the most important processes of the weed life cycle: seed survival in the soil, seed placement in soil after tillage, seed germination depending on soil depth, time of year and tillage and weed physiological development. The component describing...
Tipo: Conference paper, poster, etc. Palavras-chave: Weed management.
Ano: 2004 URL: http://orgprints.org/3933/1/3933.doc
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Computer model for simulating the long-term dynamics of annual weeds: from seedlings to seeds Organic Eprints
Rasmussen, Ilse A.; Holst, Niels.
We developed a simple model to predict seed production from seedling density and estimated its six parameters for Chenopodium album and Papaver rhoeas from literature data, supplemented with field data on P. rhoeas seed production in Denmark. Parameter values were specified by their expected ranges rather than just point estimates, which enabled us to determine the expected ranges of seed production at given seedling densities. The model will be incorporated into a larger model framework presented earlier for a more complete description of annual weed seedbank dynamics in a crop rotation. We found the seed production (y) of P. rhoeas to be larger than reported earlier from UK; the relation to weed biomass (x) per m2 was curvilinear, y=6015∙x0.8153 seeds...
Tipo: Journal paper Palavras-chave: Weed management.
Ano: 2003 URL: http://orgprints.org/3434/1/3434.doc
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Computer model for simulating the long-term dynamics of annual weeds under different cultivation practices Organic Eprints
Rasmussen, I.A.; Holst, N.; Pedersen, L.; Rasmussen, K..
A model is being developed which describes the population dynamics of annual weeds and how it is affected by crop rotation, cultivation practices and weed control. The model aims to predict the development of a certain weed species in order to plan crop rotation and cultivation practices to minimize the risk of proliferation. The model does not predict the exact number of weeds expected to be found in a certain year or crop, but rather the general development over a number of years. The model includes documented knowledge, as well as informal expert knowledge, on seed survival in the soil, seed placement in soil after tillage, seed germination with respect to placement in soil, time of year and tillage, weed development in response to crop competitiveness...
Tipo: Conference paper, poster, etc. Palavras-chave: Production systems; Weed management.
Ano: 2002 URL: http://orgprints.org/1506/1/EWRS_pcwc02_Rasmussen_IA.pdf
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Conceptual and user-centric design guidelines for a plant nursing robot Organic Eprints
Sørensen, C.G.; Jørgensen, R.N.; Maagaard, J.; Bertelsen, K.K.; Dalgaard, L.; Nørremark, M..
Current service robots have relatively primitive behaviours and limited interaction with the environment. Technological foresights have indicated that the next generation of service robots will demonstrate a high degree of autonomy and reliability, have minimal impact on the environment, and will interact in a flexible way with the user. It is necessary therefore, to determine the functional requirements for a future energy-efficient robotic bioproduction system from the perspective of various stakeholders, together with the development of a high-level framework for designing and prototyping the common functionalities of mobile robots. This study presents technical guidelines for the design of a plant nursing robot. The methodology uses Quality Function...
Tipo: Journal paper Palavras-chave: Weed management.
Ano: 2010 URL: http://orgprints.org/20657/4/20657.pdf
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Conocimiento y valoración de la vegetación espontánea por agricultores hortícolas de La Plata, Argentina: su importancia para la conservación de la agrobiodiversidad. Organic Eprints
Vicente, Luciano Ariel; Sarandon, Santiago J..
Se evaluó el conocimiento y valoración que los agricultores de la zona Hortícola de La Plata tienen sobre la vegetación espontánea presente en sus fincas. Se realizaron entrevistas semiestructuradas y recorridas a campo en 27 fincas. Se relevó la riqueza de especies espontáneas, SUS posibles usos y funciones ecológicas y el conocimiento y la actitud (positiva, neutra, negativa) que los agricultores tienen hacia este componente de la agrobiodiversidad. Se confirmó la existencia de uma importante diversidad de especies espontáneas en la región con una considerable cantidad de usos apropiables. Los agricultores demostraron poseer un bajo conocimiento general de las espécies espontáneas aunque existieron diferencias entre ellos. Se observó un mayor...
Tipo: Journal paper Palavras-chave: Farming Systems; Crop husbandry; Social aspects; Weed management.
Ano: 2013 URL: http://orgprints.org/27627/1/Vicente_Conocimiento%20y%20valor%C3%A1cion%20de%20vegetaci%C3%B3n.pdf
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Contributions de Hansueli Dierauer dans la Technique Agricole 2012 Organic Eprints
Dierauer, Hansueli.
Le désherbage thermique. Technique Agricole, 10.05.2012, Page 46 Maîtrise des adventices : Quelle sarcleuse choisir ? Technique Agricole, 13.01.2012, Page 10
Tipo: Newspaper or magazine article Palavras-chave: Weed management.
Ano: 2012 URL: http://orgprints.org/29861/1/Dierauer_2012_TechniqueAgricole_2Articles.pdf
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Control of creeping thistle by stubble cultivation Organic Eprints
Dierauer, Hansueli; Siegrist, Franziska; Weidmann, Gilles.
Multiple cultivations lead to a repeated physical damage of the thistle. Each time it regrows, it uses further nutrients until it is weakened and a new crop will out-compete it. This method is also effective against other root-spreading weeds such as couch grass and bindweeds. • After harvesting grains, perform stubble cultivation with a skim plough or a completely flat-cutting wing share cultivator at a depth of 7-10 cm. • After the thistle plants have re-emerged (maximum 10 cm), repeat the cultivation 1-2 times while increasing the working depth. • Sow a dense, fast-growing catch crop such as vetch or fodder radish after the stubble cultivation to further weaken the thistles. This method only works on dry soils and in dry weather; in wet...
Tipo: Practice tool Palavras-chave: Soil tillage; Weed management.
Ano: 2017 URL: http://orgprints.org/31016/25/PA_001_Distelregulierung_final_QR.pdf
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Control of creeping thistle by stubble cultivation Organic Eprints
Dierauer, Hansueli; Weidmann, Gilles; Siegrist, Franziska.
The practice abstract explains the procedure for the control of creeping thistle by stubble cultivation.
Tipo: Report Palavras-chave: Soil tillage; Weed management.
Ano: 2017 URL: http://orgprints.org/32765/1/Control%20of%20creeping%20thistle%20by%20stubble%20cultivation.pdf
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Control of docks (Rumex spp.) in organic fodder production - a true bottleneck in organic farmed branded dairy and meat products Organic Eprints
Control of dock species are a true bottleneck in the development of grassland based organic production in Norway. Rumex obtusifolius, Rumex crispus and Rumex longifolius are among the most important perennial weeds in grassland areas throughout the world. These docks are undesirable in grasslands because they decrease yields and reduce forage feeding value. Numerous farmers feel powerlessness regarding how to manage the Rumex problem. Some farmers continue conventionally farming instead of organic, although they generally are motivated for transferring to organic production, due to the dock problem. The main goal of the project is a high quality and stable production of regional branded dairy and meat products based on fodder from grassland with...
Tipo: Project description Palavras-chave: Weed management.
Ano: 2019 URL: http://orgprints.org/11045/1/Project_DOCK_infestation_26april_06.pdf
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Control of perennial weeds based on weed biology and environmental considerations Organic Eprints
Thomsen, M.G.; Brandsæter, L.O.; Mangerud, K.; Riley, H..
Timing, type and duration of tillage operations and cropping practices are of importance for reducing the regeneration of perennial weeds and also for minimizing the environmental impacts of such operations. In the present work and with reference to previous publications we find that, based on the knowledge gained on growth patterns, sensitivity to competition, growth potential of roots and mechanical and management measures it is possible to coordinate control of perennial weeds with considerations of yield and reduced environmental impact.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil tillage; Weed management.
Ano: 2013 URL: http://orgprints.org/24523/1/24523.pdf
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Controlled traffic farming: A new track for soil and weed control in organic farming Organic Eprints
Delanote, Lieven; Dewaele, Karel; Jamart, An.
The soil between the tracks remains undisturbed. Its structure is crumbly and thus optimal for plant growth. Practical information • Controlled traffic farming is a system approach that has an effect on the entire farm. Good preparation is necessary, e.g., by getting informed from colleagues who already use CTF. • Depending on the farm and the available mechanization (esp. working width), there are several ways to work with tramlines. Examples are bed-cultivation with a 1.5 to 3.2 m track width or a default track-width (often 1.5 m) with standardized, often wide machines (3 to 9 m in width). • Use standard equipment and standard working widths that are used on your own and on neighbouring operations (e.g. farmer-colleagues, agricultural contractors)...
Tipo: Practice tool Palavras-chave: Soil quality; Soil tillage; Soil; Weed management; Farm nutrient management.
Ano: 2018 URL: http://orgprints.org/32775/1/PA_044_vaste_rijpaden.pdf
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Controlling broad-leaved dock (Rumex obtusifolius) in grass clover mixtures Organic Eprints
van Eekeren, Nick; Fehér, L.; Smeding, Frans; Prins, Udo; Jansonius, PieterJans.
This article describes three experiments on the control of broad-leaved dock. Experiment 1: Dock seeds were ensiled in grass silages of different dry matter percentages; 23, 34 and 60% respectively. All silages showed a decline of seed vitality in time. Grass clover with dock seeds should be ensiled at a low dry matter percentage or remain in the silage bin for a longer period than 8 weeks. Experiment 2: In a potassium fertilisation trial on grass clover the development of dock was followed. After two years of potassium fertilisation, the number of dock and the root mass was not significant different between the fertilised and the unfertilised plots. It is concluded that potassium fertilisation at a low potassium status does not positively influence the...
Tipo: Conference paper, poster, etc. Palavras-chave: Pasture and forage crops; Weed management.
Ano: 2006 URL: http://orgprints.org/8622/1/1783.pdf
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Controlling docks by stubble cultivation Organic Eprints
Dierauer, Hansueli; Siegrist, Franziska; Weidmann, Gilles.
The stubble cultivation cuts the dock roots below growth points. The vegetative plant parts are then cut off from the water and nutrient supply, and regrowth is inhibited. Practical recommendation • Summer dock treatment is especially worthwhile in dry summers with catch crop cultivation and after early maturing crops (winter barley, whole-crop silage) or with an early tillage of grass-clover. • After grass-clover lay or cereal harvest, undercut the dock plants at a depth of 12-15 cm with a skim plough (without skimmer) with a support wheel, a stubble cleaner or an overlapping flat cultivator. • Bring the roots to the surface by passing over the field with a spring-tine harrow every 7-14 days. Additionally, apply a rotary harrow in heavy soils to...
Tipo: Practice tool Palavras-chave: Soil tillage; Weed management; Farm nutrient management.
Ano: 2017 URL: http://orgprints.org/31030/13/PA_025_Ampferkur_final_QR.pdf
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Controlling Phalaris Minor in the Indian Rice-Wheat Belt AgEcon
Vincent, David P.; Quirke, Derek.
The ACIAR-managed project CS1/1996/013, Herbicide-resistant weeds of wheat in India and Australia: integrated management, was designed to find a long-term method of control of Phalaris minor, a problem weed of the rice–wheat cropping system of north-western India. By 1993, the weed had developed resistance to isoproturon, a herbicide which had delivered effective weed control for 15 years. The short-term solution, implemented before the ACIAR project commenced, involved identification and registration of a new set of herbicides. But these new herbicides were expensive. To ensure high adoption they needed to be combined with changes in wheat-growing techniques that would provide cost savings to help farmers pay for them. And to avoid the re-emergence of...
Tipo: Book Palavras-chave: Herbicide-resistant weeds; Wheat; Weed; India; Australia; Integrated management; Phalaris minor; Rice-wheat cropping systems; Chemical resistance; Weed management; Zero tillage; Cost saving; Net present economy; High benefits; Profitable technology; Agribusiness; Crop Production/Industries; Farm Management; Food Consumption/Nutrition/Food Safety; International Development; Production Economics.
Ano: 2002 URL: http://purl.umn.edu/47696
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Conventional vs. organic cropping systems: yield of crops and weeds in Mediterranean environment Organic Eprints
Campiglia, Enio; Mancinelli , Roberto; Radicetti, Emanuele.
Agriculture must meet the twin challenge of feeding a growing population while simultaneously of minimizing its global environmental impacts. The organic farming, which is a system aimed at producing food with minimal harm to ecosystems, is often proposed as a possible solution. However, critics argue that organic agriculture may give lower yields and therefore more land is required in order to produce the same amount of food of the conventional farms, resulting in more widespread deforestation and biodiversity loss, thus undermining the environmental benefits of organic practices. The long-term experiment was established in 2001 in order to compare organic vs. conventional cropping systems and inversion vs. non-inversion soil tillage. A 3-year crop...
Tipo: Conference paper, poster, etc. Palavras-chave: Farming Systems; Soil tillage; Weed management; Farm nutrient management.
Ano: 2015 URL: http://orgprints.org/29656/1/LTE.pdf
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