THE BIOLOGY OF CANADIAN WEEDS: 30. Pyrus melanocarpa (Michx.) Willd.

• Published in: Canadian Journal of Plant Science
• Main Authors: HALL, IVAN V., WOOD, GEORGE W., JACKSON, LLOYD P.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1978
• Subjects: Horticulture; Plant Science; Agronomy and Crop Science; Newfoundland
• Online Access: http://dx.doi.org/10.4141/cjps78-075; http://www.nrcresearchpress.com/doi/pdf/10.4141/cjps78-075

Pyrus melanocarpa (Michx.) Willd., black chokeberry (Rosaceae) is a native shrub occurring from Newfoundland to the head of Lake Superior in Ontario. It tolerates a wide variety of substrates but in all of its habitats there is a high incidence of sunlight. It is a major weed problem of lowbush blueberry (Vaccinium angustifolium Ait. and V. myrtilloides Michx.) fields, especially following the application of fertilizer.