Abstract
The presence of chlorimuron ethyl and metsulfuron methyl in two soils was determined by a modified petri dish bioassay. Pregerminated seeds of maize and sunflower were placed in petri dishes containing 85 to 100 g of treated soil. Radicle root lengths were measured after 24 h. Chlorimuron had no effect on maize on the Balcarce soil, however 0.007 microg g(-1) decreased sunflower root length. Chlorimuron decreased maize and sunflower root length regardless application dose on the San Cayetano soil. Metsulfuron decreased maize root length at 0.04 microg g(-1) and sunflower at 0.021 microg g(-1) on the Balcarce soil. On the San Cayetano soil metsulfuron at 0.001 microg g(-1) decreased maize and sunflower root length. The phytotoxicity of chlorimuron and metsulfuron changed according to soil type and dose. Maize and sunflower were 1.3-1.5 and 1.3-1.8 times respectively more sensitive to chlorimuron on the San Cayetano soil than on the Balcarce soil. In the case of metsulfuron, maize was similarly sensitive on both soils but sunflower was 1.7-2.0 times more sensitive on the San Cayetano soil than on the Balcarce soil. Phytotoxicity increased as organic matter (OM) content decreased and/or when the soil pH and concentration increased.
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Claims 12
Claim · model-written summary
Chlorimuron had no effect on maize in Balcarce soil.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorimuron had no effect on maize on the Balcarce soil”
Claim · model-written summary
Chlorimuron at 0.007 microg g(-1) decreased sunflower root length in Balcarce soil.
- Taxon
- sunflower
Helianthus annuuse0 - Treatment
- 0.007 microg g(-1)e0
- Outcome
- sunflower root lengthe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.007 microg g(-1) decreased sunflower root length”
Claim · model-written summary
Chlorimuron decreased maize and sunflower root length across doses in San Cayetano soil.
- Taxon
- maize and sunflowerHelianthus annuus
Zea mayse0 - Treatment
- Chlorimurone0
- Outcome
- maize and sunflower root lengthe0
- Direction
- decreasede0
- Setting
- San Cayetano soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorimuron decreased maize and sunflower root length regardless application dose on the San Cayetano soil”
Claim · model-written summary
Metsulfuron at 0.04 microg g(-1) decreased maize root length in Balcarce soil.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Metsulfuron decreased maize root length at 0.04 microg g(-1)”
Claim · model-written summary
Metsulfuron at 0.021 microg g(-1) decreased sunflower root length in Balcarce soil.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- 0.021 microg g(-1)e0
- Outcome
- sunflowere0
- Setting
- Balcarce soile0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower at 0.021 microg g(-1) on the Balcarce soil”
Claim · model-written summary
Metsulfuron at 0.001 microg g(-1) decreased maize and sunflower root length in San Cayetano soil.
- Taxon
- maize and sunflowerHelianthus annuusZea mayse0
- Treatment
- metsulfuron at 0.001 microg g(-1)e0
- Outcome
- maize and sunflower root lengthe0
- Direction
- decreasede0
- Setting
- San Cayetano soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the San Cayetano soil metsulfuron at 0.001 microg g(-1) decreased maize and sunflower root length”
Claim · model-written summary
Maize was 1.3-1.5 times more sensitive to chlorimuron in San Cayetano soil.
- Outcome
- more sensitive to chlorimurone0
- Direction
- more sensitivee0
- Value
- 1.3-1.5e0
- Comparator
- Balcarce soile0
- Setting
- San Cayetano soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize and sunflower were 1.3-1.5 and 1.3-1.8 times respectively more sensitive to chlorimuron on the San Cayetano soil than on the Balcarce soil”
Claim · model-written summary
Sunflower was 1.3-1.8 times more sensitive to chlorimuron in San Cayetano soil.
- Taxon
- sunflowerHelianthus annuuse0
- Outcome
- more sensitive to chlorimurone0
- Direction
- more sensitivee0
- Value
- 1.3-1.8 timese0
- Comparator
- Balcarce soile0
- Setting
- San Cayetano soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize and sunflower were 1.3-1.5 and 1.3-1.8 times respectively more sensitive to chlorimuron on the San Cayetano soil than on the Balcarce soil”
Claim · model-written summary
Maize sensitivity to metsulfuron was similar in both soils.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize was similarly sensitive on both soils”
Claim · model-written summary
Sunflower was 1.7-2.0 times more sensitive to metsulfuron in San Cayetano soil.
- Taxon
- sunflowerHelianthus annuuse0
- Outcome
- more sensitivee0
- Direction
- more sensitivee0
- Value
- 1.7-2.0 timese0
- Comparator
- Balcarce soile0
- Setting
- San Cayetano soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sunflower was 1.7-2.0 times more sensitive on the San Cayetano soil than on the Balcarce soil”
Claim · model-written summary
Phytotoxicity increased as soil organic matter declined.
Not reportedTaxon
Verbatim
e0“Phytotoxicity increased as organic matter (OM) content decreased”
Claim · model-written summary
Phytotoxicity increased as soil pH or concentration increased.
Not reportedTaxon
Verbatim
e0“Phytotoxicity increased as organic matter (OM) content decreased and/or when the soil pH and concentration increased”
The same questions in other papers
metsulfuron methyl · growth · Helianthus annuus (common sunflower)Results agree
1 paper in the same direction as this paper
- negative
metsulfuron methyl · growth · Zea mays (maize)Results agree
2 papers in the same direction as this paper
- negative
- negative
chlorimuron · growth · Zea mays (maize)Results agree
2 papers in the same direction as this paper
- negative
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.