Abstract
Corn (Zea mays L.) in the two to three-leaf stage grown 18 to 21 days in a growth chamber under cold, wet conditions was injured by postemergence application of 2-chloro-4-(ethylamino)-6-(isopropylamino)- s -triazine (atrazine) plus emulsifiable phytobland oil. Injury was most severe when these plants were kept under cold, wet conditions for 48 hr after the herbicidal spray was applied, followed by exposure to high light intensity and high temperature. Under these growth chamber conditions, approximately 50% of the atrazine-treated plants died. Since wet foliage before and after application increased foliar penetration and low temperature decreased the rate of detoxication to peptide conjugates, atrazine accumulated under cold, wet conditions. This accumulation of foliarly-absorbed atrazine and the “weakened” conditions of the plants grown under the stress conditions is believed to be responsible for the injury to corn. Hydroxylation and the dihydroxybenzoxazin-3-one content in the roots were reduced at low temperature, but it is unlikely that this contributed to the death of the corn.
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Claims 9
Claim · model-written summary
Atrazine plus oil injured corn under cold, wet conditions.
- Taxon
- Corn
Zea mays subsp. mayse0 - Organ / stage
- two to three-leaf stagee0
- Treatment
- postemergence application of 2-chloro-4-(ethylamino)-6-(isopropylamino)- s -triazine (atrazine) plus emulsifiable phytobland oile0
- Outcome
- injurede0
- Setting
- growth chambere0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn (Zea mays L.) in the two to three-leaf stage grown 18 to 21 days in a growth chamber under cold, wet conditions was injured by postemergence application of 2-chloro-4-(ethylamino)-6-(isopropylamino)- s -triazine (atrazine) plus emulsifiable phytobland oil.”
Claim · model-written summary
Injury was most severe after 48 hours of cold, wet conditions followed by high light and heat.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- Injurye0
- Direction
- most severee0
- Qualifier
- cold, wet conditions for 48 hre0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Injury was most severe when these plants were kept under cold, wet conditions for 48 hr after the herbicidal spray was applied, followed by exposure to high light intensity and high temperature.”
t0“Corn”
Claim · model-written summary
Approximately half of atrazine-treated plants died under these growth chamber conditions.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- atrazine-treated plants diede0
- Value
- approximately 50%e0
- Setting
- growth chambere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under these growth chamber conditions, approximately 50% of the atrazine-treated plants died.”
t0“Corn”
Claim · model-written summary
Wet foliage increased atrazine foliar penetration.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- wet foliage before and after applicatione0
- Outcome
- foliar penetratione0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wet foliage before and after application increased foliar penetration”
t0“Corn”
Claim · model-written summary
Low temperature decreased detoxication to peptide conjugates.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- low temperaturee0
- Outcome
- rate of detoxication to peptide conjugatese0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low temperature decreased the rate of detoxication to peptide conjugates”
t0“Corn”
Claim · model-written summary
Atrazine accumulated under cold, wet conditions.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- atrazine accumulatede0
- Qualifier
- cold, wet conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“atrazine accumulated under cold, wet conditions”
t0“Corn”
Claim · model-written summary
Atrazine accumulation and stress-weakened plants were believed to cause injury.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- injury to corne0
- Qualifier
- accumulation of foliarly-absorbed atrazine and the “weakened” conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This accumulation of foliarly-absorbed atrazine and the “weakened” conditions of the plants grown under the stress conditions is believed to be responsible for the injury to corn.”
Claim · model-written summary
Low temperature reduced root hydroxylation and dihydroxybenzoxazin-3-one content.
- Taxon
- CornZea mays subsp. mayst0
- Organ / stage
- rootse0
- Treatment
- low temperaturee0
- Outcome
- Hydroxylation and the dihydroxybenzoxazin-3-one contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hydroxylation and the dihydroxybenzoxazin-3-one content in the roots were reduced at low temperature”
t0“Corn”
Claim · model-written summary
The reductions in root hydroxylation and dihydroxybenzoxazin-3-one content were considered unlikely to cause corn death.
- Taxon
- cornZea mays subsp. mayse0
- Organ / stage
- rootse0
- Outcome
- death of the corne0
- Qualifier
- unlikely that this contributede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hydroxylation and the dihydroxybenzoxazin-3-one content in the roots were reduced at low temperature, but it is unlikely that this contributed to the death of the corn.”
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See all 61 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.