Abstract
Herbicides applied shortly after wheat ( Triticum aestivum L.) harvest combined with no tillage or with several minimum tillage treatments were compared with conventional tillage for weed control from wheat harvest 1 year through sorghum ( Sorghum bicolor (L.) Moench) production the next year. Three lb/A of 2-chloro-4-(ethylamino)-6-(isopropylamino)- s -triazine (atrazine) with no tillage did not completely control weeds, but over 4 years of sorghum grain yields on the atrazine-no tillage plots and on conventional tillage plots were not significantly different. One tillage either immediately before or immediately after application of 3 lb/A atrazine controlled essentially all weeds from wheat harvest until fall, but in some years grass weeds emerged in the spring. One pre-planting tillage or one cultivation after sorghum emergence reduced weed competition so that no additional weed control measures were needed. Sorghum yields from those plots were substantially above yields resulting from conventional tillage.
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Claims 6
Claim · model-written summary
Atrazine with no tillage did not fully control weeds.
- Treatment
- Three lb/A of 2-chloro-4-(ethylamino)-6-(isopropylamino)- s -triazine (atrazine) with no tillagee0
- Interactor
- weedse0weed
- Outcome
- weedse0
SorghumNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three lb/A of 2-chloro-4-(ethylamino)-6-(isopropylamino)- s -triazine (atrazine) with no tillage did not completely control weeds, but over 4 years of sorghum grain yields on the atrazine-no tillage plots and on conventional tillage plots were not significantly different.”
e1“sorghum ( Sorghum bicolor (L.) Moench)”
Claim · model-written summary
Sorghum grain yield did not differ significantly between atrazine without tillage and conventional tillage.
- Treatment
- atrazine-no tillagee0
- Outcome
- sorghum grain yieldse0
- Direction
- not significantly differente0
- Comparator
- conventional tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“over 4 years of sorghum grain yields on the atrazine-no tillage plots and on conventional tillage plots were not significantly different.”
Claim · model-written summary
One tillage before or after atrazine application controlled essentially all weeds until fall.
- Treatment
- One tillage either immediately before or immediately after application of 3 lb/A atrazinee0
- Interactor
- weedse0weed
- Outcome
- weedse0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One tillage either immediately before or immediately after application of 3 lb/A atrazine controlled essentially all weeds from wheat harvest until fall, but in some years grass weeds emerged in the spring.”
e1“sorghum ( Sorghum bicolor (L.) Moench)”
Claim · model-written summary
Grass weeds sometimes emerged in spring after the one tillage atrazine treatment.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in some years grass weeds emerged in the spring.”
e1“sorghum ( Sorghum bicolor (L.) Moench)”
Claim · model-written summary
One preplant tillage or postemergence cultivation reduced weed competition enough to avoid further control.
- Treatment
- One pre-planting tillage or one cultivation after sorghum emergencee0
- Interactor
- weede0weed
- Outcome
- weed competitione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One pre-planting tillage or one cultivation after sorghum emergence reduced weed competition so that no additional weed control measures were needed.”
Claim · model-written summary
Sorghum yield after these minimal tillage treatments exceeded conventional tillage yield.
- Treatment
- One pre-planting tillage or one cultivation after sorghum emergencee1
- Outcome
- Sorghum yieldse0
- Direction
- substantially abovee0
- Comparator
- conventional tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum yields from those plots were substantially above yields resulting from conventional tillage.”
e1“One pre-planting tillage or one cultivation after sorghum emergence”
The same questions in other papers
atrazine · weed · SorghumResults agree
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- positive
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101 papers in the same direction as this paper · 17 in the opposite direction · 4 reporting no difference from an alternative
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- positive
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See all 123 papers →tillage · weed · SorghumPositive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
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.