Table 1. SPECIFIC THINNING RECOMMENDATIONS. |
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Cultivar |
Petal fall to 3 mm |
7 to 12 mm |
15+ mm |
McIntosh |
Sevin |
Sevin+2.5-7.5NAA or Sevin+50-75Accel |
Sevin |
Cortland |
Sevin |
Sevin |
Sevin |
Delicious (Promalin at bloom) |
Sevin |
Sevin (+75Accel if needed) |
Sevin |
Empire |
Sevin |
Sevin+7.5-10NAA or Sevin+50-75Accel |
Sevin |
Macoun |
Sevin+5-7.5NAA |
Sevin+5-7.5NAA |
Sevin |
Macoun (alternative) |
Sevin |
Sevin+75-100Accel |
Sevin |
Golden Delicoius |
Sevin |
Sevin+10-15NAA or Sevin+75-100 Accel |
Sevin |
Mutsu |
Sevin |
Sevin+5-7.5NAA |
Sevin |
Fuji |
Sevin |
Sevin+75-100Accel |
Sevin |
Gala |
Sevin |
Sevin+5-7.5NAA |
Sevin |
In all cases, Sevin is recommeded to be applied at 1 qt Sevin XLR per 100 gal., and NAA and Accel recommendations are in ppm. |