Tips on Using Apogee to Control Vegetative Growth

Apogee is a plant growth regulator that reduces terminal shoot growth. Apogee can also reduce the incidence and severity of fire blight shoot infections.

• Apply first spray when new growth is 2.5 to 5.0 cm (1-2" shoots) (usually late bloom or petal fall). Don't be late! Apogee is non-toxic to bees.
• A 2nd spray may be needed in 14-21 days (depends of level of growth control required). Up to 4 sprays may be needed on high vigour trees.
• Rate is dependent on tree vigour, amount of pruning, crop load, and length of growing season. See Table 4-16, Publication 360.
• Maximum seasonal rate is 5.4 kg/ha of Apogee.
• Thorough wetting of canopy is required. Application rate of 1000L water/ha is the dilute rate and can be adjusted for Tree Row Volume.
• Include the adjuvant Agral 90 to improve uptake.
• For hard water, add AMS fertilizer (high quality, greenhouse grade).
  

Precautions when using Apogee:

• 
  Do not tank-mix with calcium sprays.
• Apogee may make thinning more difficult, especially at concentrations above 125 ppm.
• Apogee may cause fruit cracking in Empire and Stayman.
• Apogee does not control fire blight blossom infections.
  

For full recommendations, see p. 85, Publication 360, Fruit Production Recommendations or online at www.omafra.gov.on.ca/english/crops/pub360/4apogee.htm