Author:
Arnold C. E.,Aldrich J. H.
Abstract
Field experiments were conducted in 1974 and 1975 to evaluate the effect of seven herbicides applied preemergence and two herbicides applied postemergence on weed growth around 7-yr-old pecan [Carya illinoensis(Wang.) K. Koch ‘Elliott’ and ‘Desirable’] and 3-yr-old peach [Prunus persica(L.) Batsch ‘June Gold’] and to observe herbicidal tolerance as noted from visually expressed phytotoxicity. After 12 weeks, the best control of bermudagrass [Cynodon dactylon(L.) Pers.], purple nutsedge(Cyperus rotundusL.), and wild blackberry (Rubus cuneifoliusPursh) was obtained with glyphosate [N-(phosphonomethyl)glycine], napropamide [2-(α-naphthoxy)-N,N-diethylpropionamide] + glyphosate, and napropamide + terbacil (3-tert-butyl-5-chloro-6-methyluracil) + paraquat (1,1′dimethyl-4,4′-bipyridinium ion). The most effective overall control of yellow nutsedge (Cyperus esculentusL.), camphorweed [Heterotheca subaxillaris(Lam.) Britt. & Rusby], dogfennel [Eupatorium capillifolium(Lam.) Small], large crabgrass [Digitaria sanguinalis(L.) Scop.], and Florida pusley (Richardia scabraL.) resulted from napropamide + terbacil + paraquat. Herbicides used caused no visible toxicity to the immature pecan or peach trees.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
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