Author:
Dowler Clyde C.,Tschirley Fred H.,Bovey R. W.,Morton H. L.
Abstract
We applied (2,4-dichlorophenoxy)acetic acid (2,4-D), (2, 4,5-trichlorophenoxy)acetic acid (2,4,5-T), 4-amino-3,5,6-trichloropicolinic acid (picloram), and 1,1′-dimethyl-4,4′-bipyridinium ion (paraquat) alone and in various combinations by aircraft on arborescent species in Texas and Puerto Rico. Paraquat defoliated trees rapidly but did not give long-term control. Picloram defoliated a greater number of species than the other herbicides and defoliation extended over a longer period. No treatment killed all trees in the mixed forest or prevented regrowth and secondary succession for a period of more than 1 year. Higher herbicide rates were necessary to defoliate woody plants in tropical Puerto Rico than in subtropical Texas.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
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5. Trade names of code are used in this publication solely for the purpose of identification and simplicity. Their mention does not constitute a guarantee or a warranty of the product by the U. S. Department of Agriculture or an endorsement by the Department over other products of a similar nature not mentioned.
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3 articles.
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