Absorption and translocation of glyphosate isopropylamine and trimethylsulfonium salts in Abutilon thoepharasti and Setaria faberi

N. M. Satchivi, L. M. Wax, E. W. Stoller, Donald P Briskin

Research output: Contribution to journalArticle

Abstract

Growth chamber and laboratory experiments were conducted to evaluate foliar absorption and translocation of the isopropylamine (Ipa) or trimethylsulfonium (Tms) salts of glyphosate in Abutilon theophrasti and Setaria faberi. Glyphosate was applied at 250 g ai ha-1. Absorption of 14C-glyphosate in both formulations increased similarly in both species over 72 h. Seventy-two hours after treatment (HAT), A. theophrasti absorbed 26% of applied 14C of both formulations, whereas S. faberi absorbed 43% of both formulations. The addition of 1% ammonium sulfate (AMS) to both formulations increased the amount of herbicide absorbed to 35% in A. theophrasti and 60% in S. faberi 72 HAT. Translocation of absorbed 14C-glyphosate in both formulations (with or without AMS) was greater for S. faberi than A. theophrasti 72 HAT. For A. theophrasti, 17% of 14C absorbed in Ipa and Tms formulations were translocated out of the treated leaf, whereas additions of AMS increased the amount translocated to 25 and 23% for Ipa and Tms, respectively. The largest portion of translocated 14C moved to tissues above the treated leaf. For S. faberi, 37% of absorbed 14C in both Ipa and Tms formulations were translocated out of the treated leaf 72 HAT, whereas 42% translocated when 2% AMS was added to both formulations. In S. faberi, the largest portion of 14C-glyphosate translocated to tissues below the treated leaf. In summary, no differences were found between Ipa and Tms formulations in both weed species.

Original languageEnglish (US)
Pages (from-to)675-679
Number of pages5
JournalWeed Science
Volume48
Issue number6
DOIs
StatePublished - Jan 1 2000

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glyphosate-trimesium
Abutilon
Setaria faberi
Abutilon theophrasti
glyphosate
salts
ammonium sulfate
leaves
growth chambers
herbicides
weeds

Keywords

  • Formulation
  • Isopropylamine
  • Translocation
  • Trimethylsulfonium
  • Uptake

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science

Cite this

Absorption and translocation of glyphosate isopropylamine and trimethylsulfonium salts in Abutilon thoepharasti and Setaria faberi. / Satchivi, N. M.; Wax, L. M.; Stoller, E. W.; Briskin, Donald P.

In: Weed Science, Vol. 48, No. 6, 01.01.2000, p. 675-679.

Research output: Contribution to journalArticle

Satchivi, N. M. ; Wax, L. M. ; Stoller, E. W. ; Briskin, Donald P. / Absorption and translocation of glyphosate isopropylamine and trimethylsulfonium salts in Abutilon thoepharasti and Setaria faberi. In: Weed Science. 2000 ; Vol. 48, No. 6. pp. 675-679.
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abstract = "Growth chamber and laboratory experiments were conducted to evaluate foliar absorption and translocation of the isopropylamine (Ipa) or trimethylsulfonium (Tms) salts of glyphosate in Abutilon theophrasti and Setaria faberi. Glyphosate was applied at 250 g ai ha-1. Absorption of 14C-glyphosate in both formulations increased similarly in both species over 72 h. Seventy-two hours after treatment (HAT), A. theophrasti absorbed 26{\%} of applied 14C of both formulations, whereas S. faberi absorbed 43{\%} of both formulations. The addition of 1{\%} ammonium sulfate (AMS) to both formulations increased the amount of herbicide absorbed to 35{\%} in A. theophrasti and 60{\%} in S. faberi 72 HAT. Translocation of absorbed 14C-glyphosate in both formulations (with or without AMS) was greater for S. faberi than A. theophrasti 72 HAT. For A. theophrasti, 17{\%} of 14C absorbed in Ipa and Tms formulations were translocated out of the treated leaf, whereas additions of AMS increased the amount translocated to 25 and 23{\%} for Ipa and Tms, respectively. The largest portion of translocated 14C moved to tissues above the treated leaf. For S. faberi, 37{\%} of absorbed 14C in both Ipa and Tms formulations were translocated out of the treated leaf 72 HAT, whereas 42{\%} translocated when 2{\%} AMS was added to both formulations. In S. faberi, the largest portion of 14C-glyphosate translocated to tissues below the treated leaf. In summary, no differences were found between Ipa and Tms formulations in both weed species.",
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AB - Growth chamber and laboratory experiments were conducted to evaluate foliar absorption and translocation of the isopropylamine (Ipa) or trimethylsulfonium (Tms) salts of glyphosate in Abutilon theophrasti and Setaria faberi. Glyphosate was applied at 250 g ai ha-1. Absorption of 14C-glyphosate in both formulations increased similarly in both species over 72 h. Seventy-two hours after treatment (HAT), A. theophrasti absorbed 26% of applied 14C of both formulations, whereas S. faberi absorbed 43% of both formulations. The addition of 1% ammonium sulfate (AMS) to both formulations increased the amount of herbicide absorbed to 35% in A. theophrasti and 60% in S. faberi 72 HAT. Translocation of absorbed 14C-glyphosate in both formulations (with or without AMS) was greater for S. faberi than A. theophrasti 72 HAT. For A. theophrasti, 17% of 14C absorbed in Ipa and Tms formulations were translocated out of the treated leaf, whereas additions of AMS increased the amount translocated to 25 and 23% for Ipa and Tms, respectively. The largest portion of translocated 14C moved to tissues above the treated leaf. For S. faberi, 37% of absorbed 14C in both Ipa and Tms formulations were translocated out of the treated leaf 72 HAT, whereas 42% translocated when 2% AMS was added to both formulations. In S. faberi, the largest portion of 14C-glyphosate translocated to tissues below the treated leaf. In summary, no differences were found between Ipa and Tms formulations in both weed species.

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