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Registros recuperados: 6
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Biomass production, symbiotic nitrogen fixation and inorganic N use in dual and tri-component annual intercrops Organic Eprints
Andersen, Mette Klindt; Hauggaard-Nielsen, Henrik; Ambus, Per; Jensen, Erik Steen.
The interspecific complementary and competitive interactions between pea (Pisum sativum L.), barley (Hordeum vulgare L.) and oilseed rape (Brassica napus L.), grown as dual and tri-component intercrops were assessed in a field study in Denmark. Total biomass production and N use at two levels of N fertilisation (0.5 and 4.0 g N/m2), were measured at five harvests throughout a growing season. All intercrops displayed land equivalent ratio values close to or exceeding unity, indicating complementary use of growth resources. Whereas both rape and barley responded positively to increased N fertilisation, irrespective of whether they were grown as sole- or intercrops, pea was strongly suppressed when grown in intercrop. Of the three crops barley was the...
Tipo: Journal paper Palavras-chave: Nutrient turnover; Crop combinations and interactions.
Ano: 2004 URL: http://orgprints.org/6002/1/MKA.pdf
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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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Density and relative frequency effects on competitive interactions and resource use in pea-barley intercrops Organic Eprints
Hauggaard-Nielsen, Henrik; Andersen, Mette Klindt; Joernsgaard, Bjarne; Jensen, Erik Steen.
Intercropping advantages may be influenced by both plant density and relative frequency of the intercrop components. In a field study barley (Hordeum vulgare L.) and pea (Pisum sativum L.) were sole cropped and intercropped at three densities, corresponding to i) half of the recommended, ii) the recommended and iii) twice the recommended plant density. Two intercrops combinations were included holding 1/3pea+2/3barley and 2/3pea+1/3barley relative to the sole crop densities employed. For three growth intervals within the whole growing period, the relative performance and interactions between the two crops were assessed using the Relative Efficiency Index (REIc). The relative performance of the two species varied over the growing season and was influenced...
Tipo: Journal paper Palavras-chave: Crop combinations and interactions.
Ano: 2005 URL: http://orgprints.org/4053/1/4053.pdf
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Early interference dynamics in intercrops of pea, barley and oilseed rape Organic Eprints
Bellostas, Natalia; Hauggaard-Nielsen, Henrik; Andersen, Mette Klindt; Jensen, Erik Steen.
Intercropping, the practical application of ecological principles such as diversity, interference, competition and coexistence in agriculture, is gaining increasing interest in organic farming. To be able to improve the management of intercrops, a more detailed knowledge is required on aspects of interference between crops. A bioassay and a pot experiment were conducted to assess both the mechanisms and the time of expression of processes involved in the early interference between pea (Pisum sativum L.), barley (Hordeum vulgare L.) and oilseed rape (Brassica napus L.) when grown as intercrops. Conditions of non-limiting nutrient and water supply were chosen to eliminate competition for these growth factors. The bioassay gave no indication of competitive...
Tipo: Journal paper Palavras-chave: Crop combinations and interactions.
Ano: 2003 URL: http://orgprints.org/1450/2/1450.pdf
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Intercropping – The practical application of diversity, competition, and facilitation in arable and organic cropping systems Organic Eprints
Jensen, Erik Steen; Hauggaard-Nielsen, Henrik; Kinane, Julia; Andersen, Mette Klindt; Jørnsgaard, Bjarne.
Intercropping (IC) is the simultaneous cultivation of more than one crop species on the same piece of land. The IC practice offers many advantages to organic agriculture in terms of resource use, yield stability, weed management and increased diversification of agroecosystems. Field experiments carried out at two sites in Denmark over three consequetive cropping seasons showed that ICs of cereals and grain legumes gave higher yields, less weeds, lower infection with plant diseases and higher grain quality compared to corresponding sole crops.
Tipo: Conference paper, poster, etc. Palavras-chave: Crop health; Quality; Protection Crop combinations and interactions Weed management.
Ano: 2005 URL: http://orgprints.org/6176/1/6176.doc
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Intercropping - the practical application of diversity, competition and facilitation in arable and organic cropping systems Organic Eprints
Jensen, Erik Sten; Hauggaard-Nielsen, Henrik; Kinane, Julia; Andersen, Mette Klindt; Jørnsgaard, Bjarne.
Intercropping (IC) is the simultaneous cultivation of more than one crop species on the same piece of land. The IC practice offers many advantages to organic agriculture in terms of resource use, yield stability, weed management, and increased diversification of agroecosystems. Field experiments carried out at two sites in Denmark over three consecutive cropping seasons showed that ICs of cereals and grain legumes gave higher yields, less weeds, lower infection with plant diseases, and higher grain quality compared to corresponding sole crops.
Tipo: Conference paper, poster, etc. Palavras-chave: Cereals; Pulses and oilseeds Crop combinations and interactions.
Ano: 2005 URL: http://orgprints.org/4219/3/Jensen_etal_4p_revised%2Ded.doc
Registros recuperados: 6
Primeira ... 1 ... Última
 

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