Sauvignon Blanc and plant water status

Sauvignon Blanc and plant water status

Dr. Carien CoetzeeBasic Wine27 October 2020   Water stress, due to insufficient water supply, may have direct and/or indirect effects on the physiology of the vine and the composition of the berries. Some of the physiological responses to water stress include1...
Grapevine Leafroll Disease and the effect on Sauvignon Blanc

Grapevine Leafroll Disease and the effect on Sauvignon Blanc

Dr. Carien Coetzee Basic Wine 17 October 2020   Grapevine leafroll disease (GLD) is one of the major diseases affecting the grapevine and occurs in all vine-growing regions of the world. Grapevine leafroll-associated virus 3 (GLRaV-3) is the main virus mostly...
Managing green aromas in the vineyard: Methoxypyrazines

Managing green aromas in the vineyard: Methoxypyrazines

Dr. Carien Coetzee Basic Wine 29 October 2019   Methoxypyrazines (MPZ) are odorous compounds responsible for the green pepper, grassy, herbaceous, beans, peas, asparagus and even earthy aromas (collectively referred to as “green”). These compounds derive directly...