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Purple Nutsedge (Cyperus rotundus) Control with Fumigant and Pebulate Combinations in Tomato

Published online by Cambridge University Press:  20 January 2017

James P. Gilreath  and
Bielinski M. Santos
James P. Gilreath
Affiliation:
Gulf Coast Research and Education Center, University of Florida, 14625 County Road 672, Wimauma, FL 33598
Bielinski M. Santos*
Affiliation:
Gulf Coast Research and Education Center, University of Florida, 14625 County Road 672, Wimauma, FL 33598
*
Corresponding author's E-mail: bmsantos@ifas.ufl.edu
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Abstract

Field trials were conducted to determine the effect of fumigant-pebulate combinations on purple nutsedge density in fresh market tomato. Treatments consisted of methyl bromide plus chloropicrin (MBr plus Pic) [67:33] at rates of 270 and 130 kg/ha, respectively; Pic plus pebulate at 400 and 4.5 kg/ha, respectively; metham (MNa) plus pebulate at 485 and 4.5 kg/ha, respectively; dazomet plus pebulate at 950 and 4.5 kg/ha, respectively; and 1,3-dicholopropene plus Pic (C-17) [87:13] plus pebulate at 392 and 4.5 kg/ha, respectively. At 12 wk after treatment, MBr plus Pic controlled purple nutsedge more effectively (10 plants/m2) than the fumigant-pebulate combinations (50 to 70 plants/m2). Compared to MBr plus Pic, Pic plus pebulate had a 14% lower marketable yield. No differences in marketable yield were noted with dazomet plus pebulate or C-17 plus pebulate compared to MBr plus Pic. However, MNa plus pebulate produced a 15% higher yield than MBr plus Pic. Additionally, MNa plus pebulate had 15% higher marketable fruit weight than MBr plus Pic.

Keywords

Purple nutsedge, Cyperus rotundus L. # CYPROtomato, Lycopersicon esculentum Mill. ‘Sunny’Methyl bromidechloropicrinmethamdazomet1,3-dichloropropeneMBr, methyl bromideMNa, metham1,3-D, 1,3-dichloropropenePic, chloropicrinC-17, 1,3-D plus Pic (87:13)MITC, methylisothiocyanateWAT, weeks after treatment
Type
Research Article
Information
Weed Technology , Volume 19 , Issue 3 , September 2005 , pp. 575 - 579
Copyright
Copyright © Weed Science Society of America 

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Footnotes

1 Published as Florida Agricultural Experiment Station Journal Series R-10192.

References

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