AbstractWe applied the herbicides 4-amino-3,5,6-trichloropicolinic acid (Picloram), 1,1'-dimethyl-4,4'-bipyridinium ion (Paraquat), (2,4-dichlorophenoxy) acetic acid (2,4-D), and (2,4,5-trichlorophenoxy)acetic acid (2,4,5-T), alone or in various combinations, as foliage sprays to guava (Psidium guajava L.), mango (Mangifera indica L.), rose apple (Eugenia jambos L.), and camasey (Miconia prasina (Sw.)DC). A 1:1 mixture of Paraquat and Picloram at 12 lb./A. or 2,4-D:2,4,5-T (1:1) at 24 lb./A. generally desiccated and defoliated more leaves during the first month after treatment, but Picloram at 6 lb./A. caused more defoliation 12 months after treatment. Camasey was more susceptible to the herbicides tested than guava, mango, and rose apple.
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