Notes
Slide Show
Outline
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Effect of VIF on Nutsedge Control with Metam, Chloropicrin and 1,3-D,
Alone & in Combination
  • Bielinski M. Santos, James P. Gilreath,
  • Myriam N. Siham & Joseph W. Noling


  • University of Florida
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Metam
  • It will control nutsedge (Cyperus rotundus and esculentus), but it has been erratic in the past.


  • Drip application has performed more consistently than spray and rototill.
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Metam
  • Drip requires 2 or more tubes on bed top.


  • Water volume is important for delivery via drip – 1 acre inch of water or more.


  • Concentration is also important – 6,000 ppm in water.
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"Concentration + duration = efficacy"
  • Concentration + duration = efficacy
  • (Rate + water volume) + duration = efficacy
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Enhanced Activity of Inline
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Key Questions
  • Does VIF affect nutsedge control with Metam or Chloropicrin?


  • Does the addition of Metam to Pic or 1,3-D + Pic aid performance?
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Materials and Methods
  • Ruskin, Florida


  • Fine sand, <2% organic matter


  • Drip-applied fumigants


  • Split plot design:
    • 6 replications
    • Main plots: Fumigants (30 m)
    • Subplots: Film type (15 m)
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Treatments
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Nutsedge populations
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LPDE vs. VIF
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K-Pam with VIF
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Inline, Inline + K-Pam with VIF
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Chloropicrin with K-Pam and VIF
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Answers
  • Does VIF affect nutsedge control with Metam or Chloropicrin?
    • Yes, VIF mulch improved nutsedge control with Metam-K and Inline, but had no effect on Pic alone.
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Answers
  • Does the addition of Metam to Pic or 1,3-D + Pic aid performance?
    • Yes, the best nutsedge control was obtained with either Pic or Inline followed by Metam-K 5 days after application under VIF mulch.