'Harley Blackwell' a new chip stock potato variety for Florida

Chad M. Hutchinson, Doug M. Gergela, David A. Dinkins, Edsel E. Redden


'Harley Blackwell' is an internal heat necrosis (IHN) resistant chip stock potato (Solanum tuberosum L.) variety recently released by the USDA. It was tested at the University of Florida's Plant Science Research and Education Unit during eight seasons from 1999 to 2005 originally under the selection number B0564-8. Production practices followed standard IFAS BMP recommendations. 'Harley Blackwell' tubers are consistently described as having a tan to buff skin color with a netted texture. Tuber flesh color is white to cream. Tuber shape is rated as 'mostly round' to 'round to oblong' with an eye depth of intermediate to shallow. External tuber appearance is noted as fair to good. 'Harley Blackwell' plant architecture is 'spreading to upright' with a good canopy. Early plant vigor (size) is similar to 'Atlantic', as well as, early plant maturity rating. Total and marketable yields of 'Harley Blackwell' averaged approximately 10% less than 'Atlantic' over all seasons evaluated. In addition, specific gravity averaged approximately 0.005 lower than that of 'Atlantic' although still at an acceptable level for Florida chip potatoes. 'Harley Blackwell' tubers exhibited on average no internal heat necrosis compared to 'Atlantic' at up to 0.68%.


hollow heart; internal heat necrosis; Irish potato; potato crisps; seepage irrigation; Solanum tuberosum; speci?c gravity; sub-surface irrigation

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283