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| Rahmann, G; Paulsen, H; Hotker, H; Jeromin, K; Schrader, S; Haneklaus, S; Schnug, E. |
| Although it is the aim of organic farming to increase biodiversity, there is little information about the impact of organic farming on birds. From 2001 to 2003, the number of breeding birds was recorded annually on the organic experimental farm of the Institute of Organic Farming (600 ha), and on adjacent conventional and organic farms (60 ha and 40 ha) in Northern Germany. The number of skylark (Alauda arvensis) territories increased considerably after the conversion from conventional to organic farming on the premises of the Institute. Their number remained unvaried on the conventional farm. The highest density of skylark territories was found on the farm which has been under organic management for many years. The number of yellowhammer (Emberiza... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2006 |
URL: http://orgprints.org/10219/1/Contribution_of_organic_farming_to_conserving_and_improving_biodiversity_in_Germany_avi%2Dfauna_as_an_example.pdf |
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| Paulsen, H M; Schochow, M; Ulber, B; Kuhne, S; Rahmann, G. |
| Agricultural advantages of mixed cropping are gained from biological effects like light competition offering weed-suppressing capacities, or by diversification of plant covers to break development cycles of pests. These effects were measured in a two-year project on mixed cropping with organic oilseed crops. It was found that weeds can be efficiently suppressed in organic linseed (Linum usitatissivum) grown in combination with wheat (Triticum aestivum) or false flax (Camelina sativa). Linseed growth was, however, impaired. In organic pea production (Pisum sativum) also, growing the crop as a mixture with false flax led to a significant decrease of weed population. Either culture showed a balanced plant development. In winter rape (Brassica napus) there... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Cereals; Pulses and oilseeds Crop combinations and interactions Weed management. |
| Ano: 2006 |
URL: http://orgprints.org/10230/1/Mixed_cropping_systems_for_biological_control_of_weeds_and_pests_in_organic_oilseed_crops.pdf |
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| Rahmann, G. |
| Endangered breeds are not compulsory for organic farming, but adapted and local breeds are considered suitable for Organic Farming. In the year 2001, 240 ewes of six different breeds were introduced on the experimental farm of the Institute of Organic Farming in Trenthorst. Two were high yielding breeds, four older endangered German breeds. The whole herd was kept in one herd in a low input – low output system, comparable to agrienvironmental schemes. The scientific programme was to follow the herd’s development in terms of health status, growth rate and product qualities. After three lambing seasons, no real advantages could be found for the old breeds. Nevertheless, high yielding and old breeds did not show big differences in production and health... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Sheep and goats; Health and welfare; Breeding and genetics. |
| Ano: 2006 |
URL: http://orgprints.org/10247/1/Do_endangered_sheep_breeds_have_an_advantage_in_organic_farming.pdf |
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| Schrader, S; Kiehne, J; Anderson, T-H; Paulsen, H-M; Rahmann, G. |
| In Northern Germany, a diverse and complex experimental farm of the Federal Agricultural Research Centre (FAL) was set-up in 2001 covering all main aspects of organic farming. Previously, the 600 ha farm had been managed conventionally. Adjacent conventional farms were used as reference. The aim of this project was to study collembolans, microbial biomass and soil organic carbon in six organically farmed fields managed as a crop rotation of six different crops compared with an adjacent conventionally managed field. We hypothesised that the specific management in organic farming promotes soil biota. Soil samples were taken during the growing season in 2004. Collembolan abundances and microbial biomass were lower under organic management, but, generally,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil. |
| Ano: 2006 |
URL: http://orgprints.org/10218/1/Development_of_Collembolans_after_conversion_towards_organic_farming.pdf |
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