Response of Two Yellow Nutsedge Varieties to Three Herbicides
1976; Cambridge University Press; Volume: 24; Issue: 1 Linguagem: Inglês
10.1017/s0043174500065413
ISSN1550-2759
AutoresJaime Costa, Arnold P. Appleby,
Tópico(s)Weed Control and Herbicide Applications
ResumoIn greenhouse studies, Cyperus esculentus L. var. esculentus was less susceptible than C. esculentus L. var. leptostachyus Boeck. to preplant applications of 1.77 kg/ha of atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)- s -triazine] or 0.5 kg/ha of metribuzin [4-amino-6- tert -butyl-3-(methylthio)- as -triazine-5-(4 H )one]. C. var. esculentus was more susceptible than C. var. leptostachyus to postemergence applications of 2,4-D [(2,4-dichlorophenoxy)acetic acid] oil-soluble amine. C. var. esculentus had longer, slightly narrower, and more upright leaves; generally fewer but larger tubers; fewer rhizomes; and a lower frequency of flowers with less seeds per inflorescence than C. var. leptostachyus. Publications on C. esculentus should specify which variety was used.
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