First report of lineage EU23 causing potato and tomato late blight in South Africa.

In South Africa, potato () late blight epidemics from 1996 to 2007 were caused by clonal lineage US-1 (McLeod et al. 2001; Pule et al. 2013).

Occurrence of Botrytis cinerea and Subsequent Disease Expression at Different Positions on Leaves and Bunches of Grape.

The occurrence of Botrytis cinerea and subsequent disease expression at different positions on leaves and bunches of grape was determined from 1996 to 2000. Different techniques were used to detect viable inoculum on material obtained from table (cvs. Barlinka and Dauphine) and wine grape (cv.

Surface Colonization, Penetration, and Lesion Formation on Grapes Inoculated Fresh or After Cold Storage with Single Airborne Conidia of Botrytis cinerea.

Infection of grapes by different densities of airborne conidia of Botrytis cinerea was investigated on table grapes (cultivar Dauphine) harvested ripe (16°Brix) and inoculated fresh, or after SO treatment and 8-week storage at -0.5°C. Berries were detached at each inoculation and dusted with dry conidia in a settling tower.