Abstract
The influence of temperature and relative humidity on the activity of acifluorfen {5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acid} on common cocklebur ( Xanthium pensylvanicum Wallr.) and common ragweed ( Ambrosia artemisiifolia L.) was studied in growth chambers. Treatment at high relative humidity (85 ± 5%) resulted in a significant increase in acifluorfen phytotoxicity and decrease in plant dry weight as compared to treatment at a lower (50 ± 5%) relative humidity (RH). Temperature (32 C day, 22 C night or 26 C day, 16 C night) was not as critical as relative humidity in influencing acifluorfen phytotoxicity. Addition of a non-ionic surfactant to the herbicide solution resulted in increased phytotoxicity. Penetration and translocation of acifluorfen in common cocklebur were increased when applications were made at high relative humidity.
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Claims 5
Claim · model-written summary
High humidity increased acifluorfen phytotoxicity in common cocklebur and common ragweed.
Verbatim
e0“Treatment at high relative humidity (85 ± 5%) resulted in a significant increase in acifluorfen phytotoxicity and decrease in plant dry weight as compared to treatment at a lower (50 ± 5%) relative humidity (RH)”
t0“common cocklebur ( Xanthium pensylvanicum Wallr.) and common ragweed ( Ambrosia artemisiifolia L.)”
Claim · model-written summary
High humidity decreased plant dry weight.
Verbatim
e0“Treatment at high relative humidity (85 ± 5%) resulted in a significant increase in acifluorfen phytotoxicity and decrease in plant dry weight as compared to treatment at a lower (50 ± 5%) relative humidity (RH)”
t0“common cocklebur ( Xanthium pensylvanicum Wallr.) and common ragweed ( Ambrosia artemisiifolia L.)”
Claim · model-written summary
Temperature was less important than humidity for acifluorfen phytotoxicity.
Verbatim
e0“Temperature (32 C day, 22 C night or 26 C day, 16 C night) was not as critical as relative humidity in influencing acifluorfen phytotoxicity”
t0“common cocklebur ( Xanthium pensylvanicum Wallr.) and common ragweed ( Ambrosia artemisiifolia L.)”
Claim · model-written summary
Non-ionic surfactant increased herbicide phytotoxicity.
- Taxon
- common cockleburt0
- Treatment
- Addition of a non-ionic surfactante0
- Outcome
- phytotoxicitye0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Addition of a non-ionic surfactant to the herbicide solution resulted in increased phytotoxicity”
t0“common cocklebur ( Xanthium pensylvanicum Wallr.) and common ragweed ( Ambrosia artemisiifolia L.)”
Claim · model-written summary
High humidity increased acifluorfen penetration and translocation in common cocklebur.
- Taxon
- common cocklebure0
- Treatment
- high relative humiditye0
- Outcome
- Penetration and translocation of acifluorfene0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Penetration and translocation of acifluorfen in common cocklebur were increased when applications were made at high relative humidity”