Abstract
During the 1994/95 and 95/96 farming seasons, two field assays were conducted in Coimbra, Minas Gerais, to evaluate the residual effect in soil of the herbicides imazamox (50 and 100 g/ha), imazaquin (140 and 280 g/ha) and imazethapyr (100 and 200 g/ha), used in soybean, on corn and sorghum crops succeeding soybean. Bioassays using sorghum as test-plant were conducted under greenhouse conditions by using soil samples collected from plots sprayed with the herbicides in field experiments. Soil samples were collected at 90, 105, 120 and 135 days after application (DAA) for imazamox and imazethapyr and at 95, 110, 125 and 140 DAA for imazaquin. Corn and sorghum sowing was carried out in the plots previously used for soybean crop. The results obtained allowed to conclude that imazamox had the lowest residual effect in soil among herbicides evaluated, having no influence on the development of the test-plant at 120 DAA, even when the recommended dosage was doubled. However, imazethapyr applied at 200 g/ha (double recommended dosage) inhibited significantly the development of sorghum plants sowed 120 and 135 DAA. However, in field conditions, no negative effect was observed either on corn or sorghum crops sowed 150 DAA of herbicides.
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Claims 4
Claim · model-written summary
Imazamox had the lowest soil residual effect among the herbicides evaluated, in sorghum bioassays under greenhouse conditions.
- Treatment
- imazamoxe0
- Outcome
- residual effect in soile0
- Direction
- loweste0
- Comparator
- herbicides evaluatede0
- Setting
- greenhouse conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“imazamox had the lowest residual effect in soil among herbicides evaluated”
e1“Bioassays using sorghum as test-plant were conducted under greenhouse conditions”
Claim · model-written summary
Imazamox had no influence on sorghum development at 120 DAA, even at double the recommended dosage.
- Treatment
- imazamoxe0
- Outcome
- development of the test-plante2
- Direction
- no influencee2
- Qualifier
- even when the recommended dosage was doublede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“imazamox had the lowest residual effect in soil among herbicides evaluated”
e1“Bioassays using sorghum as test-plant were conducted under greenhouse conditions”
e2“having no influence on the development of the test-plant at 120 DAA, even when the recommended dosage was doubled”
Claim · model-written summary
Imazethapyr applied at 200 g/ha (double the recommended dosage) significantly inhibited sorghum development in plants sown 120 and 135 DAA.
- Treatment
- imazethapyr applied at 200 g/ha (double recommended dosage)e3
- Outcome
- development of sorghum plantse3
- Direction
- inhibitede3
- Qualifier
- sowed 120 and 135 DAAe3
- Comparator
- recommended dosagee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“imazethapyr applied at 200 g/ha (double recommended dosage) inhibited significantly the development of sorghum plants sowed 120 and 135 DAA”
Claim · model-written summary
In field conditions, no negative effect of the herbicides was observed on corn or sorghum crops sown 150 DAA.
- Taxon
- corn or sorghum
Sorghum
Zea mays subsp. mayse4 - Treatment
- herbicidese4
- Outcome
- negative effecte4
- Qualifier
- sowed 150 DAAe4
- Setting
- field conditionse4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“in field conditions, no negative effect was observed either on corn or sorghum crops sowed 150 DAA of herbicides”
The same questions in other papers
Imazethapyr · growth · SorghumPositive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
imazamox · growth · SorghumPositive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
1 paper more in this group
See all 5 papers →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.