Cover Crop Management in Vineyards of the Lower Orange River Region, South Africa: 2. Effect on Plant Parasitic Nematodes
AbstractThis study was conducted as part of a larger investigation into the effect of management practices on selected sown
cover crops and the effects thereof on grapevine performance. The aim of this study was to determine the effect of these
cover crops on plant parasitic nematode populations under natural field conditions. The trial site was in an own-rooted
Sultanina vineyard situated in the Lower Orange River of the Northern Cape Province. Three management practices
were applied selectively to ten cover crop species, with two control treatments consisting of weeds. Nematodes were
monitored for a period of four years. ‘Saia’ oats were indicated as being poor hosts to both root-knot and root-lesion
nematodes, while ‘Overberg’ oats showed poor host status against ring nematodes. ‘Midmar’ ryegrass and ‘Paraggio’
medic were also poor hosts for root-knot nematodes, while grazing vetch appeared to be a good host for root-knot
nematodes. The most notable result from this study was the relatively high numbers of all three nematodes on the vine
row, as opposed to the inter-row where cover crops were established. This indicates that vines were much better hosts
for these nematodes than the cover crops. It is recommended that if more definite trends are to be observed, Brassica
species, which have direct toxic/repellant effects on nematodes, should be tested.
A copyright form will be e-mailed to the corresponding author when the manuscript has been accepted for publication.
In principle, the Author agrees to the following when he/she signes the copyright agreement:
I hereby assign to the SOUTH AFRICAN SOCIETY FOR ENOLOGY AND VITICULTURE (SASEV) the copyright of the text, tables, figures, supplementary material, illustrations and other information (the Material) submitted with the manuscript to be published in SOUTH AFRICAN JOURNAL OF ENOLOGY AND VITICULTURE (SAJEV) (the "Article"). The copyright becomes effective from the date the Article has been accepted for publication in SAJEV.
This is an open access journal, and the authors and journal should be properly acknowledged, when works are cited.
Author's may use the publishers version for teaching purposes, in books, theses, dissertations, conferences and conference papers.
A copy of the authors' publishers version may also be hosted on the following websites:
- Non-commercial personal webpage or blog.
- Institutional webpage.
- Authors Institutional Repository.
The following notice should accompany such a posting on the website: This is an electronic version of an article published in SAJEV, Volume XXX, number XXX, pages XXX - XXX, DOI. Authors should also supply a hyperlink to the original paper or indicate where the original paper (www.journals.ac.za/index.php/sajev/) may be found.
Authors publishers version, affiliated with the Stellenbosch University will be automatically deposited in the University's Institutional Repository SUNScholar.
Articles as a whole, may not be re-published with another journal.
The following license applies:
Attribution CC BY-NC-ND 4.0