Estifanos, Betre

Hallmann, Johannes

Honermeier, Bernd

Moerschbacher, Bruno

English

JKI Open Journal Systems (Julius Kühn-Institut)

 Estifanos et al. 9th Young Scientists Meeting, Quedlinburg, Germany, November 09-11, 2016 Ti Host status of different cover crops for Pratylenchus penetrans  Betre Estifanos1, Bernd Honermeier2, Johannes Hallman3, Bruno Moerschbacher4 1Julius Kühn-Institut, Institute for Epidemiology and Pathogen Diagnostics, Münster, Germany 2Institute of Agronomy and Plant Breeding I, Justus Liebig University, Gießen 3Julius Kühn-Institut, Institute for Epidemiology and Pathogen Diagnostics, Münster, Germany 4Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Münster, Germany Email of corresponding author: betretadesse@yahoo.com Cover crops that are poor or non-hosts are effective in reducing nematode pop-ulation densities below damaging levels. Greenhouse experiments were conduct-ed to evaluate the host status of nine cover crops to Pratylenchus penetrans. The average number of nematodes per root systems and the nematode multi-plication rate (ratio of final population density to initial population density = Pf/Pi) were determined 10 weeks after inoculation with 745 mixed stage nema-todes of P. penetrans. The cover crops tested were common bird’s foot (Ornithopus sativus), forage rape (Bras-sica napus), rape seed (summer oil type) (Brassica napus), Italian ryegrass cv. Tetraflorum (Lolium italicum), common vetch (Vicuña sativa subsp. nigra), Sun flower (Helianthus annuum), lentil (Lens culinaris), buckwheat (Fagopyrum esculentum), fodder radish RSAS1037 (Raphanus sativus). Maize (Zea mays) and French marigold (Tagetes patula) were included as susceptible and non-host controls respectively. The results indicated that the susceptible control maize supported only a low level of nematode reproduction which was not expected. However, most of the cover crops tested supported significant levels of nematode reproduction. The highest nematode multiplication rate was ob-tained in lentil (Pf/Pi = 45.9) followed by common vetch (Pf/Pi = 19) and rape seed (Pf/Pi = 5.8) and the lowest was recorded in Italian ryegrass (Pf/Pi = 0.6). The Pf/Pi value of the other cover crops tested ranged from 2.6 to 3.9. Among all the cover crops tested only Italian ryegrass reduced the reproduction of P. penetrans. Berichte aus dem Julius Kühn-Institut 186 29

Ti Host status of different cover crops for Pratylenchus penetrans

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Ti Host status of different cover crops for Pratylenchus penetrans

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