Details
| Original language | English |
|---|---|
| Article number | 433 |
| Journal | Horticulturae |
| Volume | 7 |
| Issue number | 11 |
| Publication status | Published - 25 Oct 2021 |
Abstract
Apple replant disease (ARD) is a severe problem in orchards and tree nurseries caused by yet unknown soil biota that accumulate over replanting cycles. This study tested the contribution of nematodes to ARD, and cultivation of Tagetes as a control option. In a pot experiment, Tagetes patula or Tagetes tenuifolia were grown in ARD soil, incorporated or removed. Nematodes extracted from untreated ARD soil and washed on 20-µm sieves induced ARD symptoms when inoculated to apple plantlets growing in a sterile substrate. In contrast, nematodes from Tagetes treated ARD soil did not reduce root growth compared to uninoculated plants, irrespective of Tagetes species and incorporation. In plots of five apple tree nurseries or orchards, either Tagetes or grass was grown on ARD soil. Nematodes extracted from the grass plots and inoculated to apple plantlets significantly reduced plant growth compared to nematodes from Tagetes plots for all five farms. Apple rootstocks showed overall a significantly higher increase in shoot base diameter when grown on Tagetes-treated plots compared to grass plots, while this effect differed among farms. Plant-parasitic nematodes were too low in abundance to explain plant damage. In conclusion, Tagetes alleviated ARD by changing the nematode community in soil.
Keywords
- Tagetes, marigold, apple replant disease (ARD), nematodes, Malus domestica, Nematodes, Pest control, Malus, Marigold, Apple replant disease, Soil biome management
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Horticulture
- Agricultural and Biological Sciences(all)
- Plant Science
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In: Horticulturae, Vol. 7, No. 11, 433, 25.10.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Alleviation of Nematode-Mediated Apple Replant Disease by Pre-Cultivation of Tagetes
AU - Kanfra, Xorla
AU - Obawolu, Taye
AU - Wrede, Andreas
AU - Strolka, Bernhard
AU - Winkelmann, Traud
AU - Hardeweg, Bernd
AU - Heuer, Holger
N1 - Funding Information: Funding: This research was funded by the German Federal Ministry of Research and Education, grant numbers 031B0512A, 031B0512B, 031B0512C, and 031B0512J. The APC was funded by the Julius Kühn-Institute.
PY - 2021/10/25
Y1 - 2021/10/25
N2 - Apple replant disease (ARD) is a severe problem in orchards and tree nurseries caused by yet unknown soil biota that accumulate over replanting cycles. This study tested the contribution of nematodes to ARD, and cultivation of Tagetes as a control option. In a pot experiment, Tagetes patula or Tagetes tenuifolia were grown in ARD soil, incorporated or removed. Nematodes extracted from untreated ARD soil and washed on 20-µm sieves induced ARD symptoms when inoculated to apple plantlets growing in a sterile substrate. In contrast, nematodes from Tagetes treated ARD soil did not reduce root growth compared to uninoculated plants, irrespective of Tagetes species and incorporation. In plots of five apple tree nurseries or orchards, either Tagetes or grass was grown on ARD soil. Nematodes extracted from the grass plots and inoculated to apple plantlets significantly reduced plant growth compared to nematodes from Tagetes plots for all five farms. Apple rootstocks showed overall a significantly higher increase in shoot base diameter when grown on Tagetes-treated plots compared to grass plots, while this effect differed among farms. Plant-parasitic nematodes were too low in abundance to explain plant damage. In conclusion, Tagetes alleviated ARD by changing the nematode community in soil.
AB - Apple replant disease (ARD) is a severe problem in orchards and tree nurseries caused by yet unknown soil biota that accumulate over replanting cycles. This study tested the contribution of nematodes to ARD, and cultivation of Tagetes as a control option. In a pot experiment, Tagetes patula or Tagetes tenuifolia were grown in ARD soil, incorporated or removed. Nematodes extracted from untreated ARD soil and washed on 20-µm sieves induced ARD symptoms when inoculated to apple plantlets growing in a sterile substrate. In contrast, nematodes from Tagetes treated ARD soil did not reduce root growth compared to uninoculated plants, irrespective of Tagetes species and incorporation. In plots of five apple tree nurseries or orchards, either Tagetes or grass was grown on ARD soil. Nematodes extracted from the grass plots and inoculated to apple plantlets significantly reduced plant growth compared to nematodes from Tagetes plots for all five farms. Apple rootstocks showed overall a significantly higher increase in shoot base diameter when grown on Tagetes-treated plots compared to grass plots, while this effect differed among farms. Plant-parasitic nematodes were too low in abundance to explain plant damage. In conclusion, Tagetes alleviated ARD by changing the nematode community in soil.
KW - Tagetes
KW - marigold
KW - apple replant disease (ARD)
KW - nematodes
KW - Malus domestica
KW - Nematodes
KW - Pest control
KW - Malus
KW - Marigold
KW - Apple replant disease
KW - Soil biome management
UR - http://www.scopus.com/inward/record.url?scp=85118191821&partnerID=8YFLogxK
U2 - 10.3390/horticulturae7110433
DO - 10.3390/horticulturae7110433
M3 - Article
VL - 7
JO - Horticulturae
JF - Horticulturae
IS - 11
M1 - 433
ER -