Presentation: The effects of defoliation timing and a comparison of ...

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Summary • Preflowering, mechanised leaf removal removes less leaf area than hand removal of the 6 bottom leaves, whereas at set and prebunch closure the two methods remove a similar amount of leaf area • Lateral regrowth recovers the removed leaf area from early defoliated vines, and they have similar leaf area at veraison to the standard prebunch closure treatment
Summary (Cont.) • Preflowering defoliation, whether by hand or machine, reduces yield and bunch compactness in Chardonnay, Merlot, and Cabernet Sauvignon, but not in Sauvignon blanc
Page 1: The effects of defoliation timing a
Page 4 and 5: Removal of leaves in the bunch zone
Page 6 and 7: The timing of defoliation is an imp
Page 8 and 9: The timing of defoliation is an imp
Page 10 and 11: We tested 3 different timings of de
Page 12 and 13: We tested 3 different timings of de
Page 14: Gregoire® Sucker-cutter type defol
Page 29 and 30: Harvest yield (kg per vine) In some
Page 31 and 32: Bunch compactness In general, early
Page 33 and 34: Rot severity (% of area infected) I
Page 35 and 36: Effects on berry growth and composi
Page 37: Summary • Preflowering, mechanise
Page 41 and 42: Summary (Cont.) • Preflowering de

Presentation: The effects of defoliation timing and a comparison of ...

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