Search
Results for “Aster yellows”
Showing 1–5 of 5 results
5 results — page 1 of 1
Indigenous leafhopper transmits aster yellows
Thus far, the indigenous leafhopper Mgenia fuscovaria is the only confirmed vector of the phytoplasma that causes aster yellows in South Africa.
By Elleunorah Allsopp and Kerstin Kruger · 5 min read
Incidence and spread of aster yellows
Symptoms associated with aster yellows (AY) vary during the season and between cultivars.
By Roleen Carstens · 5 min read
New Winetech projects for 2017 (Part 3)
1. Investigating the spread of natural vitiviruses
By Winetech Editorial Team · 3 min read
Hot water treatment - effective eradication of root-knot nematodes?
Nematodes are microscopic worm-like organisms that mostly occur in the soil. There are both “good” (free-living) and “bad” (root-feeding) nematodes. Balanced so
By Tarryn Wettergreen & Rinus Knoetze · 2 min read
Leafroll disease or deficiency symptom?
Grapevine leafroll disease is the most important viral disease of grapevines in South Africa. It is thought to have a significant impact on the sustainability of the wine industry, impacting both the qualitative and productive lifespan of our vineyards.
By Etienne Terblanche · 8 min read
