Content – Leafroll control strategy
1. Cause of leafroll disease
2.1 Recognizing leafroll disease symptoms – Red cultivars
2.2 – 2.3 Recognizing leafroll disease symptoms – White cultivars & rootstocks
3.1-3.5 Disorders that can be confused with leafroll
3.6 Disorders that can be confused with leafroll – Other diseases
4. Vectors of leafroll disease
5.1 – 5.2 Spread of leafroll – clumps & along edges
5.3 Spread of leafroll – random occurrence
6. Effects of leafroll disease
7. Alternative control strategies for leafroll disease
8. Creation of healthy Vitis planting material
9. Categorisation of vineyards for leafroll control strategies
10.1 Control – Quantifying mealybug
10.2 Control – Chemical control of mealybug
10.3 Control – Release of natural enemies
10.4 Control – Ant control
11. Control leafroll spread by removing individual infected vines (roguing)
12. Replacing whole, leafroll infected vineyards
13. Control of leafroll spread from external sources
14. Examples of leafroll control in SA wine industry
Inhoud – Rolblaar beheerstrategie
1. Oorsaak van rolblaarsiekte
2.1 Herkenning van simptome van rolblaarsiekte – rooi druifkultivars
2.2 – 2.3 Herkenning van simptome van rolblaarsiekte – wit druifkultivars & onderstokke
3.1 – 3.5 Afwykings wat met rolblaar verwar kan word
3.6 Afwykings wat met rolblaar verwar kan word – ander siektes
4. Vektore van rolblaarsiekte
5.1 – 5.2 Verspreidingspatrone van rolblaar – kolle en rande
5.3 Verspreidingspatrone van rolblaar – ewekansige voorkoms
6. Gevolge van rolblaarsiekte
7. Alternatiewe beheer
8. Maak van gesonde Vitis plantmateriaal
9. Kategoriseer wingerde vir rolblaar beheerstrategiee
10.1 Beheer witluis – Kwantifisering
10.2 Beheer witluis – Chemiese beheer
10.3 Beheer witluis – Natuurlike vyande
10.4 Beheer witluis – Mierbeheer
Contents
1. Origin and development of mechanical pruning
2. Mechanical vs hand pruning
3. Influence of mechanical pruning on wine quality
4. Types of mechanical pruning machines and trellising systems
5. Influence on water usage, fertilisation and sustainability
6. List of references
Inhoud
1. Ontstaan en ontwikkeling van meganiese snoei
2. Meganiese teenoor handsnoei
3. Invloed van meganiese snoei op wynkwaliteit
4. Tipes Meganiese Snoeimasjiene en prieelstelsels
5. Effek op waterverbruik, bemesting & volhoubaarheid
6. Meganiese snoei Bronnelys
1. Origin of mechanical harvesting
2. Influence of mechanical harvesting on yield & vigour
3. Influence of mechanical harvesting on quality of white wine
4. Influence of mechanical harvesting on quality of red wine
5. Types of mechanical harvesters
6. Trellising systems and vineyard layout
7. Conversion of existing vineyards for mechanical harvesting
8. Influence on budding and fertility of grapevines
9. Choosing between mechanical and hand harvesting
10. Cost of mechanical vs hand harvesting
11. Cost comparison between towed and self-propelled harvesters
12. Future of mechanical harvesting
13. List of references
1. Oorsprong van meganiese oes
2. Invloed van meganiese oes op produksie & groeikrag
3 Invloed van meganiese oes op gehalte van witwyn
4. Invloed van meganiese oes op gehalte van rooiwyn
5. Tipes meganiese oesmasjiene
6. Opleistelsels en wingerduitleg vir meganiese oes
7. Omskakeling van bestaande wingerde vir meganiese oes
8. Invloed op uitbot en vrugbaarheid van wingerd
9. Keuse tussen meganiese oes en handoes
10. Koste van meganiese oes en handoes
11. Koste-vergelyking tussen sleep- en selfaangedrewe oesmasjiene
12. Toekoms van meganiese oes
13. Bronnelys
Onderstokkultivars Publikasie
Understanding phenolic compounds in red winemaking
