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Collaborative project: Reduction of ascosporic inoculum of Venturia inaequalis by removing leaf litter to replace copper-based fungicides in organic apple production. Coordination
Project
Project code: 2809OE044
Contract period: 15.10.2010
- 31.12.2016
Budget: 107,310 Euro
Purpose of research: Applied research
The apple scab (Venturia inaequalis) in organic fruit growing is a major problem associated with this disease in order of quality and yield losses are different approaches to reduce. As part of this collaborative project is focused on the overwintering stage of the pathogen in the foreground. Winter quarter is mainly the fall foliage. Even on a winter wood is possible, but in practice it plays only a minor role. The aim of this project is targeted phytosanitary measures, such as to be removed by the selective use of mechanical methods, the fallen leaves as inoculum in the plant (leaf blower) or to reduce mechanically in order to promote decomposition and thus a favorable condition for the Apfelschorfregulierung in to create the following season. The study of this project be carried out in pilot plants with schorfempfindlichen varieties and are identical at all locations. At the beginning of the investigations long shoot monitorings are conducted to detect the Ausgangsinokulum of the apple scab. The trial plots are divided into two sections; an area with annual leaf litter removal, and an area in which the remaining fall foliage. On the experimental plots, the population densities of earthworms collected in the tree row and in the driving lane in order to quantify the influence of leaf removal on the ground floor life. In the two areas are adjacent to the eye leaves clean record, combined with three plant protection strategies, the possibility of shredding leaves, combined with the use of vinasse tested. Base of the plant protection strategies are the experiences in the context of the ongoing project 06OE324 'develop a strategy for the reduction of copper for scab control in organic orchards' were made. Schorfbonituren addition to the trees of the experimental plots at the end of Ascosporenphase or in the course of further growing and harvesting to be parallel over the Ascosporensaison captured in the existing plant inoculum. The determination is made on all projects across central leaf litter at the LVWO vineyard. To capture the effects of inoculum reduction in the intensity of infection will continue to work with container plants that are deliberately placed in a defined period in the plants and subsequently in the greenhouse.
Section overview
Subjects
- Arboriculture
Framework programme
Federal Organic Farming Scheme and other forms of sustainable agriculture (BÖLN)
Funding programme
Excutive institution
Organic fruit growing northern Germany Testing and counseling ... (ÖON)
