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| Registros recuperados: 117 | |
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| Rasmussen, Ilse A.; Hansen, Preben Klarskov. |
| Kornafgrøder og –sorter har forskellig evne til at undertrykke ukrudt. Dette skyldes blandt andet sortens evne til at skygge for lyset og optage vand og næringsstoffer. For sorter med en samlet god konkurrenceevne gælder at: de er langstråede de har kraftig bladmasse gennem vækstsæsonen de har en hurtig fremspiring og vækst Denne viden er udnyttet til at beregne et konkurrenceindeks af sorten overfor ukrudt. De fleste forsøg vedrørende disse forskelle er gennemført under konventionelle forhold, hvor niveauet af næringsstoffer er højt, og ukrudt og andre skadevoldere bekæmpes kemisk. Under økologiske forhold vil der oftest være en lavere og mere varierende forsyning med næringsstoffer. For at afklare om dette har en betydning for... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Crop combinations and interactions Weed management. |
| Ano: 2005 |
URL: http://orgprints.org/5917/1/5917.PDF |
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| Rasmussen, Ilse A.; Jensen, Allan Leck; Jørgensen, Margit Styrbæk; Kristensen, Helene; Conder, Malgorzata; Micheloni, Cristina; Moeskops, Bram. |
| The complexity of organic farming requires farmers to have a very high level of knowledge and skills, but exchange on organic farming techniques remains limited. In order to increase productivity and quality in organic arable cropping in Europe, the thematic network OK-Net Arable under Horizon 2020 has the aim to improve the exchange of innovative and traditional knowledge among farmers, farm advisers and scientists. An online platform for knowledge exchange has been created, offering innovative education and end-user material as well as communication between stakeholders. A number of specific tools – providing information about how to put existing knowledge from research and practise into use – have been chosen. They are presented on the platform with the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop husbandry; Social aspects; Technology transfer; Research communication and quality. |
| Ano: 2017 |
URL: http://orgprints.org/32354/7/Rasmussen_OK-Net%20Arable_OWC_2017_pres.pdf |
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| Melander, Bo; Rasmussen, Ilse A.; Olesen, Jørgen E.. |
| Fertility building measures are important components in improving the productivity of organic cropping systems without livestock. However, some measures seem to be incompatible with the control of perennial weeds that can have adverse effects such as significant weed competition. The influence of fertility building measures (N2-fixing crops in the crop sequence, cover crops and manuring) and the abundance of perennial weeds were studied in a long-term crop rotation experiment at two locations in Denmark. The aim was to gain insight into the factors that influence the growth of perennial weed species occurring in mixed stands. Data were obtained from three cycles of four-year arable crop rotations comprising various cash crops in rotations with and... |
| Tipo: Journal paper |
Palavras-chave: Weed management. |
| Ano: 2016 |
URL: http://orgprints.org/29791/1/Published_paper.pdf |
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| Askegaard, Margrethe; Olesen, Jørgen E.; Rasmussen, Ilse A.. |
| A crop rotation experiment was established in 1996/97 at three locations representing different soil types and climates. Three factors were tested: i) crop rotation with different proportions of N2-fixing crops, ii) with and without a catch crop, and iii) with and without animal manure. A green manure crop increased yields in the following cereal crops, but at the rotational level, total yields were larger in crop rotations without a green manure crop. There were positive effects of animal manure and catch crops on yield. However, except for the coarse sandy soil, the yield effects of catch crops and animal manure decreased over time when a grass-clover green manure was included in the rotation. It appeared that the buffering effect of clover can... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop combinations and interactions; Specific methods. |
| Ano: 2005 |
URL: http://orgprints.org/4805/4/Askegaard_etal_4p_revised%2Ded.doc |
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| Rasmussen, Ilse A.; Askegaard, Margrethe; Olesen, Jørgen E.. |
| The plant protection carried out in the Danish crop rotation experiment is described. These measures can be quite different in the different systems. While mechanical weed control can be carried out in systems without catch crops, it is not possible to do so in systems with catch crops without affecting the establishment of the catch crop. The occurrence of weeds, pests and diseases is recorded, and the results are described. Since the results are only from the two first years of the experiments, it is not possible to conclude anything about the crop rotations as such. There are however differences related to the other experimental treatments in the experiment: the presence or absence of catch crops and manure. Only in very few cases are the differences... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management Crop health; Quality; Protection Cereals; Pulses and oilseeds. |
| Ano: 1999 |
URL: http://orgprints.org/247/1/DARCOF1.PDF |
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| Melander, Bo; Rasmussen, Ilse A.; Barberi, Paolo. |
| Increasing concerns about pesticide use and a steadily increasing conversion to organic farming have been major factors driving research in physical and cultural weed control methods in Europe. This paper reviews some of the major results achieved with non-chemical methods and strategies especially adapted for row crops (e.g. corn, sugar beet, onion, leek, and carrot) and small grain cereals (e.g. barley and wheat). In row crops, intra-row weeds constitute a major challenge and research has mainly aimed at replacing laborious hand weeding with mechanization. A number of investigations have focussed on optimising the use of thermal and mechanical weeding methods against intra-row weeds, such as flaming, harrowing, brush weeding, hoeing, torsion weeding... |
| Tipo: Journal paper |
Palavras-chave: Weed management. |
| Ano: 2005 |
URL: http://orgprints.org/7911/1/Melander_et_al._%282005%29.pdf |
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| Rasmussen, Ilse A.. |
| Foråret nærmer sig - på de lette jorde på Jyndevad og Foulum er efterafgrøderne tandfræset et par uger før forårspløjningen, for at fremme omsætningen og dermed frigørelsen af de næringsstoffer efterafgrøden har samlet op. På Jyndevad er der pløjet, tromlet og udbragt gylle, som bliver placeret i strenge i jorden for at fremme afgrødens chance for at få fat i næringsstofferne før ukrudtet. Og forhåbentlig bliver der sået før Påske! Også på den stive lerjord i Holeby, som var vinterpløjet, er der kørt gylle og sået. I Holeby er der ekstremt lave fosfortal, og for at undersøge betydningen af dette for udbytterne, er en tredjedel af arealet af hver parcel blevet tilført 420 kg tripelfosfat. I Holeby er vinterhveden ukrudtsharvet. Dette gøres så tidligt som... |
| Tipo: Newspaper or magazine article |
Palavras-chave: Crop combinations and interactions Cereals; Pulses and oilseeds Weed management. |
| Ano: 2004 |
URL: http://orgprints.org/3936/1/3936.doc |
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| Ludwig, T.; Jansen, B.; Mayer, J.; Kühne, S.; Böhm, H.; Rasmussen, Ilse A.; Hermansen, John. |
| A mixed cropping system of rapeseed and 10% turnip rape as trap crop was compared with oilseed rape in pure stand to demonstrate the reduction of infestation by insect pests. Furthermore the application of bio-pesticides like pyrethrum/rape oil (Spruzit Neu), spinosad (SpinTor), diatomeen earth (SiO2) /sunflower-oil and rock powder/water was tased. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Crop health; Quality; Protection. |
| Ano: 2011 |
URL: http://orgprints.org/19658/1/669_OEL_boehm_ISOFAR_2011.pdf |
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| Rahmann, Gerold; Ardakani, M. Reza; Boehm, Herwert; Canali, Stefano; Chander, Mahesh; David, Wahyudi; Dengel, Lucas; Erisman, Jan Willem; Galvis-Martinez, Ana C.; Hamm, Ulrich; Kahl, Johannes; Köpke, Ulrich; Kühne, Stefan; Lee, Sang Beom; Løes, Anne-Kristin; Moos, Jan Hendrik; Neuhoff, Daniel; Nuutila, Jaakko; OLOWE, VICTOR; Oppermann, Rainer; REMBIAŁKOWSKA, EWA; Riddle, Jim; Rasmussen, Ilse A.; Shade, Jessica; Sohn, Sang Mok; Tadesse, Mekuria; Tashi, Sonam; Thatcher, Alan; Uddin, Nazim; von Fragstein und Niemsdorff, Peter; Wibe, Atle; Wivstad, Maria; Wenliang, Wu; Zanoli, Raffaele. |
| Organic agriculture can and should play an important role in solving future challenges in producing food. The low level of external inputs combined with knowledge on sustainablity minimizes environmental contamination and can help to produce more food for more people without negatively impacting our environment. Organic agriculture not only includes farming as a production practice but it also includes processing, trade and consumption. Nevertheless, Organic agriculture must always evolve to overcome emerging challenges. Science-based knowledge attained through dedicated research is required to strengthen organic food and farming as a means to solve future challenges. In 2010, a global discussion about Organic 3.0 was initiated to address current problems... |
| Tipo: Journal paper |
Palavras-chave: "Organics" in general Farming Systems Values; Standards and certification World Environmental aspects History of organics Knowledge management. |
| Ano: 2017 |
URL: http://orgprints.org/31279/1/Rahmann%20et%20al%202017.pdf |
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| Olesen, Jørgen E.; Hansen, Elly M.; Askegaard, Margrethe; Rasmussen, Ilse A.. |
| The effect of nitrogen (N) supply and weeds on grain yield of spring barley was investigated in an organic farming crop rotation experiment on three different soil types in Denmark from 1997 to 2001. Three experimental factors were included in the experiment in a factorial design: 1) crop rotation (lupin or pea/barley as previous crop to barley), 2) cover crop (with and without), and 3) manure (with and without). The crop rotations included grass-clover as a green manure crop. Animal manure was applied as slurry in rates corresponding to 40% of the N demand of the cereal crops. Application of 50 kg NH4-N ha-1 in manure (slurry) increased barley grain DM yield by 1.0 to 1.3 Mg DM ha-1, whereas the use of cover crops (primarily perennial ryegrass)... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems. |
| Ano: 2007 |
URL: http://orgprints.org/3852/2/3852.pdf |
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| Registros recuperados: 117 | |
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