2018 Crop Protection Guide for Tree Fruits in Washington

Bioregulator Sprays

Tuesday, April 24, 2018

Bioregulators: Pears - Bearing

See General Recommendations for guidelines on table use. Read all product labels carefully.
Spray to run-off (based on 400 gallons for average-sized trees)


 To
prevent
preharvest
fruit
drop
(Anjou,
Bartlett,
Bosc)
REIPHI

Product

Except where noted, rates are amount per 100 gallons in dilute sprays (active ingredient per acre; concentration) 
K-Salt Fruit Fix 200
NAA

2-4 fl oz (12.5-25 g AI; 8-16 ppm)

48 h

2 d
K-Salt Fruit Fix 800
NAA

0.5-1 fl oz (12.5-25 g AI; 8-16 ppm)

48 h

2 d
PoMaxa
NAA

See label (--; --)

48 h

2d
ReTain
AVG

0.73 lb (50 g AI; --)

12 h

7 d
Refine 6.25L
NAA

See label (--; --)

48 h

2 d


K-Salt Fruit Fix 200: Apply 5 to 7 days prior to harvest but no closer than 2 days before harvest nor more than twice for stop-drop. Do not delay harvest beyond optimum maturity.

ReTain : Apply ReTain 1-2 weeks before start of normal harvest. Follow label instructions.


 

Tree Fruit Research & Extension Center, 1100 N Western Ave, Washington State University, Wenatchee WA 98801, 509-663-8181, Contact Us