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| Registros recuperados: 27 | |
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| Lindhard Pedersen, Hanne; Pedersen, Birgitte. |
| The apple variety 'Retina' is recommended for organic production in Denmark. Yet, there is no knowledge regarding the optimal rootstock for this variety. Better knowledge is also needed on production techniques, such as weed control, where different machinery for mechanical weeding is available. Therefore, we tested the combined effect of different rootstocks and weeding techniques including soil covering with straw. As organic growers discus the necessity of weed cleaning at all, the natural vegetation was used as control treatment in the trials. |
| Tipo: Journal paper |
Palavras-chave: Soil. |
| Ano: 2004 |
URL: http://orgprints.org/10126/1/10126.pdf |
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| Lindhard Pedersen, Hanne; Pedersen, Birgitte. |
| 6 different soil treatments: Mechanical weeding to the middle of the alleyway, mechanical weeding using 3 different equipments Clemens, Humus and a dish harrow, Soil covering with wheat straw and natural vegetation were combined with 3 rootstocks: M9, J9 and M26 to find the best combination for the apple variety 'Retina'. The trees were planted in the winter 1997/1998, only sprayed at primary RIMpro warnings and drip irrigated. The tree growth, nutrient content of the leaves in august, yield and fruit quality were determined. The rootstock J9 had the highest yield and the biggest amount marketable fruit. Mechanical cleaning to the middle of the alleyways, tree row weed control using Humus or soil covering with straw gave the highest yield and marketable... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil. |
| Ano: 2004 |
URL: http://orgprints.org/10129/1/10129.pdf |
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| Lindhard Pedersen, Hanne. |
| Udbytte, frugtkvalitet og angreb af sygdomme i økologisk æbleproduktion bestemmes af et samspil mellem faktorer som tilgængelighed af vand og gødning, grundstammen, plantetætheden og bekæmpelse af sygdomme og skadedyr. Tidligere forsøg har vist, at den bedste frugtkvalitet og det laveste angreb af sygdomme i semi-tætplantede usprøjtede økologiske æbler (planteafstand på ca. 1,6 m) blev opnået ved relativ lav kvælstof tilgængelighed fra jordens egen mineralisering (se DARCOFenews). Men der ikke afklaret om det samme tilfældet i intensive tætplantede systemer (planteafstande på 0,6-1,2 m). |
| Tipo: Journal paper |
Palavras-chave: Soil. |
| Ano: 2005 |
URL: http://orgprints.org/10123/1/10123.pdf |
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| Kidmose, Ulla; Christensen, Lars P.; Lindhard Pedersen, Hanne; Thybo, Anette K.. |
| To ensure a high, stable production of blackcurrant juice in Denmark, it is necessary with high-yielding blackcurrant cultivars, which are resistant against pest and diseases, and that have a high sensory quality and high health value. In this experiment, blackcurrant juice processed from berries of 12 organic cultivars was screened. A trained sensory panel using descriptive sensory profiling evaluated the sensory quality of the juice samples. In addition, the aroma profile and the content of vitamin C were determined in the juice samples. The results showed that the following sensory attributes: blackcurrant aroma, blackcurrant flavour, fruity flavour, pungent flavour, sweetness and sourness varied significantly in the 12 juice samples. In addition the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health. |
| Ano: 2006 |
URL: http://orgprints.org/7688/1/paper_organicjuice2006_final.pdf |
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| Lindhard Pedersen, Hanne. |
| Økologiske æbler sælges oftest til frisk konsum, hvilket betyder, at de skal leve op til høje kvalitetskrav. Frugterne skal opfylde størrelseskrav og være hele og sunde. Den værste skadevolder er æbleskurv. Skurv forårsager brune til sorte pletter på frugten og kan angribe så kraftigt, at æblerne bliver uegnede til spisning. Denne svampesygdom er årsag til meget stor nedgang i udbytte og kvalitet i økologisk produktion. Kobber er et effektivt middel mod svampesygdomme og bruges til økologisk æbleproduktion i de fleste europæiske lande. Det er dog ikke godkendt i Danmark, og der er udsigt til et totalt forbud i EU. For at forbedre kvaliteten og udbyttet i en økologiske æbleproduktion må man derfor finde den bedste kombination af kvælstofforbrug,... |
| Tipo: Report chapter |
Palavras-chave: Soil. |
| Ano: 2006 |
URL: http://orgprints.org/10278/1/10278.pdf |
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| Lindhard Pedersen, Hanne. |
| Organic apples are often sold for fresh consumption and therefore have to obtain high quality requirements. The fruits must obtain the right size and be undamaged without important infections of pest and diseases. Apple scab causes brown or black spots on the fruits and severe infections can result in fruits not suitable for consumption. This disease causes big reduction in yield and quality in organic production. Copper is an effective fungicide to control diseases and is used in organic apple production in some European countries. Copper has not been permitted in Denmark the last 10 years and the European Union wants to reject it from the list of pesticides permitted in organic production. To improve the quality and yield in organic apple production, it... |
| Tipo: Report chapter |
Palavras-chave: Soil. |
| Ano: 2006 |
URL: http://orgprints.org/10285/1/10285.pdf |
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| Lindhard Pedersen, Hanne; Olsen, A.; Korsgaard, Maren; Pedersen, Birgitte. |
| Samproduktion af fjerkræ og frugt er et emne, som er blevet diskuteret og prøvet i økologisk frugtdyrkning i Danmark. Fjerkræets skraben efter føde kan muligvis formindske populationen af skadedyr, som tilbringer en del af deres livscyklus i jorden. I økologisk forskning er meget få forsøg med kombineret vegetabilsk og animalsk produktion udført. Behovet for alternative metoder til at regulerer skadedyrspopulationerne meget efterspurgte, fordi økologisk æbleproduktion i Danmark har meget få økologiske sprøjtemidler til rådighed. Æblehvepsen (Hoplocampa testudinea) giver store udbyttetab i æbler. Æblehvepsene lægger æg under blomstring og larverne ødelægger de små frugter, der falder til jorden før modenhed. Laven overvintre og forpupper sig i jorden.... |
| Tipo: Newspaper or magazine article |
Palavras-chave: Soil. |
| Ano: 2004 |
URL: http://orgprints.org/10158/1/10158pdf.pdf |
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| Lindhard Pedersen, Hanne; Christensen, Lars P.; Bengtsson, Marianne; Paaske, Klaus; Hockenhull, John. |
| To find new potential fungicides acceptable to organic production preventing apple scab (Venturia inaequalis) infections on leaf and fruits during primary apple scab infection period. The trials were carried out in combination with different cover crop treatments in single-tree plots. The formerly resistant variety ‘Delorina’ on rootstock M9, planted 1995 at a planting distance of 3.3 m x 1.6 m, unfertilized and with mechanical weed cleaning in the tree row, were used. The experimental orchard is located at Research Centre Aarslev (100 27´ E, 550 18´N). |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil. |
| Ano: 2005 |
URL: http://orgprints.org/10128/1/10128.pdf |
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| Lindhard Pedersen, Hanne; Bertelsen, Marianne. |
| In a questionnaire send out in the mid 90’ties, organic growers estimated a yield reduction of at least 86 per cent compared to conventional production. The estimation was based on production of the most common conventional grown varieties. The main reason for this low productivity is lack of control methods against diseases and pests, especially apple scab (Venturia inaequalis) (Lindhard et al., 1998). In Denmark, most organic pesticides are not registered. For instance, copper has not been on the market for 7 years. |
| Tipo: Journal paper |
Palavras-chave: Soil. |
| Ano: 2003 |
URL: http://orgprints.org/10109/1/10109.pdf |
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| Lindhard Pedersen, Hanne; Olsen, A.; Korsgaard, Maren; Pedersen, Birgitte. |
| In organic production in Denmark, no pesticides are allowed. The need for alternative pest control is therefore large. Apple sawfly (Hoplocampa testudinea) cause big crop losses in apples. Sawflies infest fruitlets and cause these to drop prematurely after which the pests pupate in the topsoil. Combined production of hens and fruit trees is a subject often discussed in organic fruit production in Denmark. The feeding poultry may reduce the population of pests, which stay in the soil as a part of their life circle. Yet, very little research has been carried out on this type of production system. |
| Tipo: Journal paper |
Palavras-chave: Soil. |
| Ano: 2004 |
URL: http://orgprints.org/10124/1/10124.pdf |
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| Registros recuperados: 27 | |
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