Abstract
Toxicity of nonradiolabeled and translocation of 14 C-labeled glyphosate [ N -(phosphonomethyl)glycine] in cotton (Gossypium hirsutum L.) were evaluated under different environmental conditions as affected by surfactant and by the maturity of the plant tissue at the place of herbicide application. Toxicity was affected primarily by temperature with 21 to 40% greater cotton injury at 25 C than at 35 C. The addition of surfactant often increased toxicity under environmental conditions where toxicity was initially low. Absorption and translocation of 14 C was affected primarily by relative humidity (RH). At constant temperature and rate of surfactant, an increase in RH from 40 to 100% resulted in a 3- to 6-fold increase in translocation of 14 C. Autoradiograms indicated that the movement of the 14 C-label was primarily into leaves above the treated area. Translocation of 14 C was significantly greater following application to the mature lower stem than to the mature lower leaves or to immature upper stem or leaves of cotton.
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Claims 5
Claim · model-written summary
Cotton injury was 21 to 40% greater at 25 C than 35 C.
- Taxon
- cotton
Gossypium hirsutume0 - Outcome
- cotton injurye0
- Direction
- greatere0
- Value
- 21 to 40%e0
- Comparator
- 35 Ce0
- Setting
- 25 Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“21 to 40% greater cotton injury at 25 C than at 35 C”
Claim · model-written summary
Surfactant addition often increased glyphosate toxicity when initial toxicity was low.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- addition of surfactante0
- Outcome
- toxicitye0
- Direction
- increasede0
- Qualifier
- environmental conditions where toxicity was initially lowe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of surfactant often increased toxicity under environmental conditions where toxicity was initially low”
t0“Cotton(Gossypium hirsutum)”
Claim · model-written summary
Increasing relative humidity from 40 to 100% produced a 3- to 6-fold increase in 14 C translocation.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- increase in RH from 40 to 100%e0
- Outcome
- translocation of 14 Ce0
- Direction
- increasee0
- Value
- 3- to 6-folde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an increase in RH from 40 to 100% resulted in a 3- to 6-fold increase in translocation of 14 C”
t0“Cotton(Gossypium hirsutum)”
Claim · model-written summary
The 14 C label moved primarily into leaves above the treated area.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- leavese0
- Outcome
- movement of the 14 C-label was primarily into leaves above the treated areae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“movement of the 14 C-label was primarily into leaves above the treated area”
t0“Cotton(Gossypium hirsutum)”
Claim · model-written summary
14 C translocation was significantly greater after application to mature lower stem than to mature lower leaves or immature upper stem or leaves.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- application to the mature lower steme0
- Outcome
- Translocation of 14 Ce0
- Direction
- greatere0
- Comparator
- mature lower leaves or to immature upper stem or leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Translocation of 14 C was significantly greater following application to the mature lower stem than to the mature lower leaves or to immature upper stem or leaves of cotton”