The goal has been to develop sustainable tree fruit production systems. Emphasis has been placed
on the evaluation of new apple and peach cultivars and rootstocks adapted for Northern New
Jersey growing conditions and marketing niche.
DEVELOPMENT OF A SUSTAINABLE APPLE PRODUCTION SYSTEM
Established in 1990. Development of apple production systems for New Jersey and the northeast.
Focuses on the evaluation of seven advanced scab resistant apple selections from the NJAES and
other apple breeding programs for commercial adaptability and marketability. Established with
funding from the USDA and NJ SARE grant programs.
Two cultivars look promising for commercial implementation: Liberty, a MacIntosh type cultivar,
which is field immune to apple scab and extremely precocious. Enterprise, a late October apple,
also field immune to apple scab and fireblight. Enterprise is a large fruited variety of high quality.
May have potential as a processing apple. Ongoing studies on a calcium disorder called Mystery
Spot have been established at the Snyder Farm.
W. P. COWGILL,D. POLK, W. TIETJEN, M. MALETTA, J. GOFFREDA
SCAB RESISTANT APPLE CULTIVAR EVALUATIONS
Established in 1993. Evaluate advanced selections from the NJAES and other COOP disease
resistant apple cultivars for commercial adaptability in northern New Jersey. Fifteen advanced scab
resistant selections from the breeding programs of NJAES, PRI and Cornell. Resistant apple
cultivars are being evaluated for performance, precocity and fruit quality. Established with NJ
SARE funding and maintained with Snyder Farm local Needs grant funding.
Goldrush and CL20-22 are the highest quality cultivars in this trail. Goldrush has been released
commercially. It is field immune to apple scab and is a golden delicious type with a unique flavor
W.P. COWGILL, W. TIETJEN, D. POLK, M. MALETTA, J. GOFFREDA,J. COMPTON
SCAB RESISTANT APPLE CULTIVAR/ROOTSTOCK EVALUATION
Established in 1993 to evaluate disease resistant cultivars for commercial planting in North Jersey.
The performance, compatibility and interaction of eight commercially promising scab resistant
cultivars on five dwarfing rootstocks adapted for North Jersey growing conditions are being
evaluated. Established with NJ SARE funding. and maintained with Snyder Farm local Needs
Liberty on M26 is the best performing combination. P22 rootstock is maturing into a precocious
weak growing tree best suited for vigorous cultivars in super high density plantings of 1000 trees
per acre or higher