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| Registros recuperados: 27 | |
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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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| Köhl, Jürgen; Heijne, Bart; Hockenhull, John; Lindhard Pedersen, Hanne; Trapmann, Marc; Eiben, Ute; Tamm, Lucius. |
| The objective of REPCO is to contribute to the replacement of copper fungicides in organic agriculture by new measures for control of downy mildew (Plasmopara viticola) in grapevine and scab (Venturia inaequalis) in apple. Both major European organic crops strongly depend on copper fungicides. Permitted amounts will be reduced stepwise during the following years (Council Regulation (EEC) 2092/91, Annex II) to avoid environmental risks. In European countries where copper fungicides are already out of use, production of organic apples suffers severe economical problems because of insufficient scab control. Potentiators of resistance, organically based fungicides and biocontrol agents are screened and evaluated in apple. Effects of crop management practices... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2006 |
URL: http://orgprints.org/8820/1/ecofruit_12th_13.pdf |
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| Warlop, Francois; Timmermans, B.G.H.; Brouwer, Gerjan; Nybom, Hilde; LATEUR, MARC; Kelderer, Markus; Weibel, Franco; Lindhard Pedersen, Hanne; GARCIN, Alain; Haug, Philipp; DAPENA, ENRIQUE. |
| Most of the currently grown commercial fruit cultivars remain unsuitable to low-input or sustainable organic farming systems. The major reason is that they have been developed and selected under high input cultivation, and without sufficient attention to susceptibility to pests and diseases. Some of these cultivars are nevertheless marketed as resistant because they carry genetic markers for major resistance genes but these are unfortunately prone to break-down (most of apple resistant cultivars relay only on the Vf). As a result, new fruit cultivars tend to reveal unexpected and often undesirable traits when grown in commercial organic orchards, and thus fail to bring about the much needed expansion in organic production and market availability. However,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding; Genetics and propagation Crop health; Quality; Protection Research methodology and philosophy. |
| Ano: 2014 |
URL: http://orgprints.org/28589/1/Warlop_2014_%2328589_Conference%20paper.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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| 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. |
| 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; 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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| 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; 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; 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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| Registros recuperados: 27 | |
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