| Registro completo |
| Provedor de dados: |
Organic Eprints
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| País: |
Germany
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| Título: |
Occurrence and importance of plant-parasitic nematodes in organic farming in Germany
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| Autores: |
Hallmann, Johannes
Frankenberg, Andrea
Paffrath, Andreas
Schmidt, Harald
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| Data: |
2007
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| Ano: |
2007
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| Palavras-chave: |
Crop health
Quality
Protection
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| Resumo: |
In an attempt to evaluate the occurrence and economic importance of plant-parasitic nematodes in organic farming in Germany, a survey was conducted with the main emphasis on vegetable and cereal production systems. For vegetables, the survey included quantification and identification of plant-parasitic nematodes in soil samples and a questionnaire for growers querying production factors and damage levels. For cereals, the survey focused on quantification and identification of plant-parasitic nematodes in soil and plant samples. Overall, Pratylenchus and Tylenchorhynchus were the most prominent nematode genera under both production systems with an incidence of over 90% of the samples. Meloidogyne was detected in 51% of the samples in both systems. Other nematode genera showed differences between the two production systems. In production systems with a high frequency of vegetables, Paratylenchus was detected in 56% of the samples and Heterodera in 15%, whereas in rotations with a high cropping frequency of cereals, incidences of plant-parasitic nematodes were 56% for Heterodera, 47% for Trichodorus and 45% for Paratylenchus. Yield losses could exceed 50% on carrots, onions and cereals and were most pronounced on sandy soils. In many cases, nematode problems started 5 to 10 years after conversion to organic farming. The survey indicated that plant-parasitic nematodes are widely spread in organic farming in Germany and can cause severe damage which may result in complete loss of the crop.
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| Tipo: |
Journal paper
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| Idioma: |
deu
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| Identificador: |
http://orgprints.org/15252/1/hallmann%2Detal%2D2007%2DNematology_Vol9_6__869%2D879.pdf
Hallmann, Johannes; Frankenberg, Andrea; Paffrath, Andreas and Schmidt, Harald (2007) Occurrence and importance of plant-parasitic nematodes in organic farming in Germany. Nematology, Vol. 9 (6), pp. 869-879.
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| Editor: |
Koninklijke Brill NV, Leiden, 2007
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| Relação: |
http://orgprints.org/15252/
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| Formato: |
application/pdf
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