ISHS Acta Horticulturae 617: Workshop on Rootstocks' Performance in Phylloxera Infested Vineyards
NEMATODE COMMUNITIES IN SOILS OF THREE DIFFERENT VINEYARDS INFESTED WITH DAKTULOSPHAIRA VITIFOLIAE |
| Authors: | K. Peterson, L. Huber, G. Eisenbeis, M. Porten, E.H. Rühl |
| Keywords: | vineyard soils, phylloxera, nematode, grapevine damage |
| Abstract:
Nematodes play an important part in ecosystem processes and are represented on most trophic levels as predators, hyphal feeders, bacterial feeders and parasites of plants and animals. Furthermore, soil nematodes react differently to pollutants and other soil disturbances and can be divided into colonisers and persisters, comparable to the categories of r- and K- strategists (Nematode Maturity Index; Bongers 1990). Accordingly, analysing nematode communities is beneficial when assessing the quality of soils. Nematode communities, their distribution in trophic groups, and the Maturity Index of the samples were compared in soil samples from three different vineyards infested with Daktulosphaira vitifoliae in Kiedrich, Germany. The three plots differed in the amount of damage caused by D. vitifoliae and the amount of organic substance (spruce sawdust) added to the soil. Plant parasites (including epidermal cell and root hair feeders) were found to be the dominant trophic group in all samples; however, the dominant parasitic family varied between the different plots. These results are part of a study examining the relationship between nematode community structure and grapevine damage related to phylloxera infestation. | |
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