1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73

As was previously noted, ReTain[TM]was applied uniformly over the entire block on 16 August.
This coincided roughly with 4.5 weeks prior to anticipated harvest.
Treatments were harvested on 7 October. Each treatment limb was harvested, counted and
weighed. Each treatment was then placed in conventional cold storage (33ºF, 95% RH) until grade
evaluations could be conducted on 24 October. Data points collected at harvest and packout included:
count and weight of fruit at harvest, packout of fruit at harvest between grades 2.75", 3.00", 3.25"
and 3.5", as well as a stem-end crack rating, L/D ratios and yield efficiency.

Results and Discussion:

IMAGE Imgs/99fruitreport16.gif

zbased on June count

ymeans separation by Fisher's LSD, 5% level

IMAGE Imgs/99fruitreport17.gif

zmeans separation within column by Fisher's LSD, 5% level

Compared to the UTC:

1

1

1


1

All Accel®treatments thinned fruit.

Accel
®treatments did not affect total yield by weight.

Average fruit weight was increased by all Accel
®treatments except the 15 gm applied at petal
fall.

More large fruit were produced on the Accel
®treated trees. Applications begun at bloom were
more effective in producing 3.5" fruit than applications begun at petal fall. Treatment rate for
the same application initiation timing did not affect number of 3.5" fruit.

References:

Abbott Laboratories 1994, Accel Technical Report.
Abbott Laboratories, Dr. Greg Clark, Personal Communication
Compton, J.M., Cowgill Jr., W.P., Tietjen, W.H. 1998. Effect of Size Influencing
Compounds on 'Empire' Apple. Proceedings: 74
thCumberland-Shenandoah Fruit
Workers Conference.
Schwallier, Philip. 1996 Apple Thinning Guide. Great Lakes Publishing Company.
13 pages
Unrath, C.R., et al. A Tree Row Volume Model for Determining Proper Spray Rates in
Apple Orchards. North Carolina State University Agricultural Research and Extension
Service. Publication No. 001, 7 pages

1999 North Jersey Tree Fruit Annual Report38