Journal
CROP PROTECTION
Volume 28, Issue 1, Pages 68-71Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cropro.2008.08.013
Keywords
Solanum lycopersicum; S-metolachlor; Napropamide; EPTC; Metam potassium; Nutsedge
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Field trials were conducted to determine the efficacy of pre-emergence herbicides and metam potassium (metam-K) on density of a mixed stand of Cyperus esculentus and Cyperus rotundus in tomato (Solanum lycopersicum L). Treatments consisted of a combination of doses and application methods of the herbicides napropamide + S-metolachlor (2.3 + 1.5 kg a.i./ha) and EPTC (4.0 kg a.i./ha), as well as the presence or not of drip-applied metam-K (400 kg a.i./ha). A non-treated control and a grower standard (methyl bromide + chloropicrin) were added. Results indicated that drip-applied EPTC was injurious to tomato, while the drip-applied combination of napropamide + S-metolachlor was ineffective against the The best combinations were obtained with bed top applications of either napropamide + weed. S-metolachlor or EPTC followed by metam-K, which provided similar levels of Cyperus control and tomato yields to methyl bromide + chloropicrin treated plots. (C) 2008 Elsevier Ltd. All rights reserved.
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