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| Kühn, B.F.; Lindhard Pedersen, H.. |
| To investigate the optimal growing system for organic apple production three different cover crop management systems were established for two scab resistant varieties. Treatment 1: A permanent grass mixture in the alleyway. Treatment 2: A permanent clover grass mixture in the alleyway and treatment 3: An annual mixture of grass and clover was sown every year in July and mulched down the next year in April. Mechanical weed cleaning was done from April to July. Mechanical weeding was carried out in the tree row and no additional fertilizing and pest disease control were carried out. Effects of soil treatment on nutrient supply and fruit quality was investigated. |
| Tipo: Journal paper |
Palavras-chave: Soil. |
| Ano: 2009 |
URL: http://orgprints.org/10364/2/10364.pdf |
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| Iversen, C.K.; Lindhard Pedersen, H.; Brandt, K.. |
| The field resistance and the concentration of phenolic compounds of five black currant varieties grown under organic conditions were compared. Significant differences between varieties were seen for all of seven quantified hydroxycinnamic acid derivatives. The variety 'Intercontinental' clearly contained the highest level of hydroxycinnamic acid esters and at the same time was the most resistant variety. There seems to be a connection between the content of a caffeoyl-di-quinic acid ester and coumaryl-quinic acid ester and disease resistance under field conditions. The effect of four different growing conditions was much less evident. Analysis of the content of these phenolic acids might be a tool to help choosing the disease resistant varieties that are... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2000 |
URL: http://orgprints.org/14907/1/87_iversen_c.k..pdf |
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| Lindhard Pedersen, H.; Olsen, A.; Pedersen, B.; Korsgaard, M.; Horsted, K.. |
| Combined production of broilers and fruit trees is a subject often discussed in organic fruit production in Denmark. Very little research has been carried out on this type of production system. In organic production in Denmark, nearly no pesticides are allowed, so the need for alternative pest control is large. Apple sawfly (Hoplocampa testudinea) and pear midge (Contarinia pyrivora) cause big crop losses in apples and pears respectively, in unsprayed organic fruit production. Both insects infest fruitlets and cause these to drop prematurely after which the pests pupate in the topsoil. In the present experiment a research orchard with the varieties ‘Discovery’ and ‘Conference’ were used as outdoor area for broilers to minimise the population of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2004 |
URL: http://orgprints.org/14522/1/25_Pedersen_131_136.pdf |
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| Heijne, B.; Jong, P.F. de; Köhl, J.; Speksnijder, A.G.C.L.; Hockenhull, J.; Bengtsson, M.; Lindhard Pedersen, H.; Paaske, K.; Eiben, U.; Tamm, L.; Trapman, M.. |
| Improved prevention and control of apple scab caused by Venturia inaequalis is aimed at without the use of copper containing products in the Repco-project. Substantial progress is made in selection of potential products against summer epidemics. A patent application is made for E73. New effective biocontrol agents are selected to reduce inoculum during winter. The product potassium bicarbonate has shown good efficacy and Repco contributes to the registration of this product in Europe. Earthworms tended to be stimulated to consume apple leaves treated with amino acids or beetpulp, especially when applied fresh under controlled environmental condi-tons. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2006 |
URL: http://orgprints.org/7781/1/applescab%2DBHeijne.pdf |
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| Lindhard Pedersen, H.. |
| Apple is the commercially most important top fruit crop grown in the European Union. In spring 2001 one-year-old trees of the apple variety ‘Ingrid Marie’ were established in an organic production system with 3.0 m between the tree rows. Each plot consisted of three semi-plots at planting distances 0.6m (5555 trees ha-1), 0.9 m (3333 trees ha –1) and 1.2 m (2777 trees ha-1). Tree growth, soil moisture, soil-, leaf- and branch analysis, diseases, fruit production, outer and inner fruit quality were measured. The healthiest trees with the best coloured fruits were produced on trees grown in weed. But the yield was so low that production was not economical. A high production combined with trees less infected with fruit tree canker and with a satisfactory... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2007 |
URL: http://orgprints.org/9916/1/Lindhard%2D2007%2DNitrogenApple.pdf |
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