EVALUATION OF RETAIN FOR STOP DROP CONTROL ON LIBERTY APPLE
Begun in 1995 and continues to evaluate Retain in replicated trails on Liberty at the Snyder farm.
Research includes the evaluation of optimum rates for extended storage life and drop reduction.
Off farm trails were conducted on Staymen at 4 locations. Based on our research Retain received a
full label for use in 1997. Over 10 North Jersey apple growers used this material in 1997. Support
provided by Abbott Labs.
W. COWGILL, J. COMPTON, J. CLEMENTS
PEACH CULTIVAR EVALUATION
Evaluate advanced peach selections from the NJAES breeding program and other promising peach
cultivars for adaptation to Northern New Jersey. The sustainability of the peach industry will
depend on the identification and adoption of promising new peach cultivars. Trees are being
evaluated for hardiness, disease resistance and bloom date. The selections are also being evaluated
for productivity and fruit quality. Ernies Choice and Encore, both NJ selections have looked
outstanding. New advanced selections of peento type peaches look promising for the specialty
retail markets. Fruit Acres Stellar series and Flamin Fury series peach cultivars have been evaluated
since 1992. Eight selections look outstanding. This project has been funded by NJARS and
Snyder Farm Local Needs grants and fruit sales.
W. P. COWGILL, J. COMPTON, M. MALETTA, J. GROFFREDA, T. HAUSAMANN
PEACH NC-140 ROOTSTOCK EVALUATION
Established 1994. One of eight plantings in the north central region to evaluate new and improved
peach rootstocks for commercial peach production. Nine peach rootstocks with 'Redhaven' as the
scion cultivar are being grown under commercial production system conditions. Information to be
gained includes the influence of the rootstocks on tree survival and disease susceptibility, tree size
control, precocity, productivity, fruit size and crop value. In 1997 there were no significant
differences in yield or growth as measured by trunk cross sectional area between rootstocks.
Guardian Trees produced small fruit, less than 2 inches. Montclair rooted trees appear to be weaker
inducing steep crotch angles. Supported by the NJ Peach council and Snyder Farm Local Needs
W. P. COWGILL, J.COMPTON, M. MALETTA, E. DURNER
CG30 APPLE ROOTSTOCK TRIAL, 1997
CG30 is a new semi dwarf apple rootstock from the Cornell/Geneva breeding program that is
resistant to fireblight and of M26 size. Five cultivars on CG30 are being compared with the same
five on M26 in a replicated randomized block experiment. Cultivars include Myra Red Fuji,
Braeburn, Gala, Gingergold, and Jonagold
W.COWGILL, J. COMPTON
ALTERNATIVE TREE FRUIT CROPS FOR SUSTAINING THE TREE FRUIT
The following projects focus on the development of the apricot and sweet cherry as potential high
value crops that could be utilized by North Jersey growers to supplement the production mix to