Tare Soil Disinfestation from Cyst Nematodes Using Inundation

• Published in: Life (Basel, Switzerland) Switzerland), 2022-12, Vol.13 (1), p.57
• Main Authors: Berger, Beatrice, Daub, Matthias, Gärtner, Kathleen, Becker, Matthias, König, Stephan
• Format: Article
• Language: English
• Subjects: Basins; Basins (Geology); Bioassays; Brukner basin; Control; Cysts; Diseases and pests; Environmental aspects; Experiments; Factories; Floods; Gauze; Hatching; lactic acid; Loam soils; Nematoda; Nematodes; Oilseeds; Particle size; phytosanitary measures; Plant nematodes; potato and sugar beet cyst nematodes; Potatoes; Processing industry; Rape plants; Sedimentary basins; Sedimentation; Sedimentation & deposition; sedimentation basin; Soils; Sugar beet; Sugar beets; Sugar industry; tare soil residues
• ISSN: 2075-1729; 2075-1729
• DOI: 10.3390/life13010057

The dissemination of soil tares in the potato and sugar beet processing industry is one of the main paths for the spread of potato cyst nematodes (PCN), a severe quarantine pest. Efficient measures for the disinfestation of tare soil from PCN, but also from beet cyst nematodes (BCN), are needed. In our study, (a PCN) and (a BCN) cysts were sealed in gauze bags and imbedded in sedimentation basins. The cysts were either placed (a) in a presedimentation basin (Brukner basin) for three days, (b) in the presedimentation basin for three days and subsequently in sedimentation basins for nine weeks or (c) in sedimentation basins for nine weeks (without presedimentation). We tested the viability of the eggs and juveniles by hatching assays and using the reproduction rates in bioassays. We demonstrated that PCN and BCN imbedded in a sedimentation basin were only still showing some hatching activity after 2.5 weeks, while no hatching was observed when an additional Brukner basin treatment was conducted before sedimentation.