Abstract

The federally regulated noxious weed small broomrape (Orobanche minor Smith) is a parasite of several plant species including alfalfa (Medicago sativa L.) and red and white clover (Trifolium pratense L. and T. repens L., respectively) (4). Because of its seed size (200 to 300 mm), it is difficult to detect in harvested clover seed and in soil (3). Recently, we reported a polymerase chain reaction (PCR) assay that can detect small broomrape seed in clover seed (2). This paper reports the testing of this assay for its ability to detect small broomrape in soil. Accepted for publication 10 June 2003. Published 1 July 2003.

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