Paraquat And Atrazine Resistance In Bidens Pilosa L. In Kenya

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Date
1993
Authors
Daniel K.A
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The University Of Bath
Abstract
Bidens pilosa L *. belongs to the family Compositae (Asteraceae) and is a native weed of tropical America (Hazelwood et al., 1966). B. pilosa is \ ! I an annual and erect weed, growing up to 1.5 m high, ubiquitous of the warm and wet tropical regions of the world (Terry & Michieka, 1987; Ivens, 1989; Ivens et al., 1978) (Plates 1. la, b, c, d). This weed is widespread in Kenya, Uganda, Tanzania, Ethiopia, Zambia, Zimbabwe, Rwanda and in many parts of West Africa (Terry & Michieka, 1987; Ann & Parker, 1989; Ivens et al., 1978; Phillips, 1991; Wild, 1955; Henderson & Anderson, 1966), and it is recorded also in India Brazil, China, Western Polynesia, Phillipines, Hawaii, Nepal and Queensland (Johnson & Kleinschmidt, 1977; Kaul, 1986; Harri, 1987; Wang, 1990; Whister, 1983; Pancho et al., 1969; Haselwood et al., 1966; Ranjit et al., 1988).
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