Blackmack

Apple

Blackmack

Origin and History

Blackmack is a McIntosh sport received by the USDA Agricultural Research Service from C & O Nursery, Wenatchee, Washington. It was included in the USDA's 1963 survey of apple clones conducted by H.H. Fisher, with station designation AP-H-82, M751, 11601, and A33319.

Tree

Not described in source.

Fruit

Blackmack is a McIntosh type that colors earlier and darker than the standard McIntosh variety.

Detailed Characteristics

Not described in source.

Season and Storage

Not described in source.

Uses

Not described in source.

Disease and Performance Notes

Blackmack exhibits susceptibility to blight in young trees. In testing designated R12740-7A, it returned negative results for two years.

Other

Blackmack was distributed to multiple USDA and state agricultural experiment stations for evaluation:

Agricultural Experiment Station, Department of Pomology, Geneva, New York (NyG)
Graham Horticultural Experiment Station, Grand Rapids, Michigan (MiG)
Ohio Agricultural Experiment Station, Wooster, Ohio (OhW)
Agricultural Research Service, Irrigation Experiment Station, Prosser, Washington (WaP)
Moxee Quarantine Station, Moxee, Washington (WaM)
Northern Great Plains Field Station, Mandan, North Dakota (NdM)
U.S. Horticultural Field Station, Cheyenne, Wyoming (WyC)
Agricultural Experiment Station, Purdue University, Lafayette, Indiana (InL)
Agricultural Experiment Station of Rutgers, New Brunswick, New Jersey (NjB)

Book Sources

Described in 1 period pomological work

Fisher, A Survey of Apple Clones in the United States (1963)

View original book sources (1)

Variety: Blackmack (a McIntosh Sport). Received From: C & O Nursery, Wenatchee, Washington. Reported Comments: McIntosh type but colors earlier and darker; blight susceptible as young tree; 2 years negative on R12740-7A. Station No.: AP-H-82, M751, 11601, A33319. Reporting Stations: Agricultural Experiment Station, Department of Pomology, Geneva, New York (NyG); Graham Horticultural Experiment Station, Grand Rapids, Michigan (MiG); Ohio Agricultural Experiment Station, Wooster, Ohio (OhW); Agricultural Research Service, Irrigation Experiment Station, Prosser, Washington (WaP); Moxee Quarantine Station, Moxee, Washington (WaM); Northern Great Plains Field Station, Mandan, North Dakota (NdM); U.S. Horticultural Field Station, Cheyenne, Wyoming (WyC); Agricultural Experiment Station, Purdue University, Lafayette, Indiana (InL); Agricultural Experiment Station of Rutgers, New Brunswick, New Jersey (NjB).

— H.H. Fisher (USDA ARS), A Survey of Apple Clones in the United States (1963)