Abstract
The effects of weed density on the phytotoxicity of atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)- s -triazine] to white mustard ( Brassica hirta Moench) and alachlor [2-chloro-2′,6′-diethyl- N -(methoxymethyl)acetanilide] to foxtail millet [ Setaria italica (L.) Beauv.] were determined in the greenhouse. The fresh weight of both plants was reduced by the herbicide treatments, but as the weed density (plants per pot) increased, the herbicide rate required to cause equivalent fresh weight reductions per pot also increased. White mustard and foxtail millet grown in pots absorbed less 14 C-atrazine or 14 C-alachlor per plant from the soil at high weed density than low, regardless of herbicide rate. Foxtail millet seedlings grown in petri dishes absorbed less 14 C-alachlor per plant from aqueous solution as the number of seedlings per petri dish increased. Data from field experiments in 1977 and 1979 indicated that more alachlor or metolachlor [2-chloro- N -(2-ethyl-6-methylphenyl)- N -(2-methoxy-1-methylethyl) acetamide] was required for equal control of a high than low density of forage sorghum [ Sorghum bicolor (L.) Moench ‘Rox Orange’] interseeded in maize ( Zea mays L.). Rox Orange sorghum was used to simulate shattercane [ Sorghum bicolor (L.) Moench], a problem weed in Nebraska. At the higher Rox Orange sorghum seeding rate used, both alachlor and metolachlor treatments decreased Rox Orange sorghum plant populations but not yield.
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Claims 13
Claim · model-written summary
Atrazine reduced white mustard fresh weight.
- Taxon
- white mustard
Sinapis albae1 - Treatment
- atrazinee1
- Outcome
- fresh weighte0
- Direction
- reducede0
- Setting
- greenhousee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fresh weight of both plants was reduced by the herbicide treatments”
e1“The effects of weed density on the phytotoxicity of atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)- s -triazine] to white mustard ( Brassica hirta Moench) and alachlor [2-chloro-2′,6′-diethyl- N -(methoxymethyl)acetanilide] to foxtail millet [ Setaria italica (L.) Beauv.] were determined in the greenhouse.”
Claim · model-written summary
Alachlor reduced foxtail millet fresh weight.
- Taxon
- foxtail millet
Setaria italicae1 - Treatment
- alachlore1
- Outcome
- fresh weighte0
- Direction
- reducede0
- Setting
- greenhousee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fresh weight of both plants was reduced by the herbicide treatments”
e1“alachlor [2-chloro-2′,6′-diethyl- N -(methoxymethyl)acetanilide] to foxtail millet [ Setaria italica (L.) Beauv.] were determined in the greenhouse.”
Claim · model-written summary
Higher white mustard density required higher herbicide rates for equivalent fresh weight reduction.
- Taxon
- white mustardSinapis albae1
- Treatment
- weed densitye0
- Outcome
- herbicide rate required to cause equivalent fresh weight reductions per pote0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“as the weed density (plants per pot) increased, the herbicide rate required to cause equivalent fresh weight reductions per pot also increased.”
e1“white mustard ( Brassica hirta Moench)”
Claim · model-written summary
Higher foxtail millet density required higher herbicide rates for equivalent fresh weight reduction.
- Taxon
- foxtail milletSetaria italicae1
- Treatment
- weed densitye0
- Outcome
- herbicide rate required to cause equivalent fresh weight reductions per pote0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“as the weed density (plants per pot) increased, the herbicide rate required to cause equivalent fresh weight reductions per pot also increased.”
e1“foxtail millet [ Setaria italica (L.) Beauv.]”
Claim · model-written summary
High density reduced per-plant atrazine absorption in potted white mustard regardless of rate.
- Taxon
- White mustardSinapis albae0
- Treatment
- high weed densitye0
- Outcome
- absorbed less 14 C-atrazinee0
- Direction
- lesse0
- Qualifier
- regardless of herbicide ratee0
- Comparator
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“White mustard and foxtail millet grown in pots absorbed less 14 C-atrazine or 14 C-alachlor per plant from the soil at high weed density than low, regardless of herbicide rate.”
Claim · model-written summary
High density reduced per-plant alachlor absorption in potted foxtail millet regardless of rate.
- Taxon
- foxtail milletSetaria italicae0
- Treatment
- high weed densitye0
- Outcome
- 14 C-alachlor per plante0
- Direction
- lesse0
- Qualifier
- regardless of herbicide ratee0
- Comparator
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“White mustard and foxtail millet grown in pots absorbed less 14 C-atrazine or 14 C-alachlor per plant from the soil at high weed density than low, regardless of herbicide rate.”
Claim · model-written summary
More foxtail millet seedlings per dish reduced alachlor uptake per plant from solution.
- Taxon
- Foxtail milletSetaria italicae0
- Treatment
- number of seedlings per petri dishe0
- Outcome
- 14 C-alachlor per plante0
- Direction
- lesse0
- Setting
- petri dishese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foxtail millet seedlings grown in petri dishes absorbed less 14 C-alachlor per plant from aqueous solution as the number of seedlings per petri dish increased.”
Claim · model-written summary
High forage sorghum density in maize required more alachlor for equal control.
- Taxon
- forage sorghume0
- Treatment
- highe0
- Outcome
- alachlore0
- Direction
- moree0
- Comparator
- low densitye0
- Setting
- fielde0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Data from field experiments in 1977 and 1979 indicated that more alachlor or metolachlor [2-chloro- N -(2-ethyl-6-methylphenyl)- N -(2-methoxy-1-methylethyl) acetamide] was required for equal control of a high than low density of forage sorghum [ Sorghum bicolor (L.) Moench ‘Rox Orange’] interseeded in maize ( Zea mays L.).”
Claim · model-written summary
High forage sorghum density in maize required more metolachlor for equal control.
- Taxon
- forage sorghume0
- Treatment
- highe0
- Outcome
- metolachlore0
- Direction
- moree0
- Comparator
- low densitye0
- Setting
- fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Data from field experiments in 1977 and 1979 indicated that more alachlor or metolachlor [2-chloro- N -(2-ethyl-6-methylphenyl)- N -(2-methoxy-1-methylethyl) acetamide] was required for equal control of a high than low density of forage sorghum [ Sorghum bicolor (L.) Moench ‘Rox Orange’] interseeded in maize ( Zea mays L.).”
Claim · model-written summary
Alachlor decreased Rox Orange sorghum populations at higher seeding rate.
- Material
- Rox Orangee0
- Treatment
- alachlore0
- Outcome
- Rox Orange sorghum plant populationse0
- Direction
- decreasede0
- Qualifier
- higher Rox Orange sorghum seeding ratee0
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the higher Rox Orange sorghum seeding rate used, both alachlor and metolachlor treatments decreased Rox Orange sorghum plant populations but not yield.”
Claim · model-written summary
Metolachlor decreased Rox Orange sorghum populations at higher seeding rate.
- Material
- Rox Orangee0
- Treatment
- metolachlore0
- Outcome
- Rox Orange sorghum plant populationse0
- Direction
- decreasede0
- Qualifier
- higher Rox Orange sorghum seeding ratee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the higher Rox Orange sorghum seeding rate used, both alachlor and metolachlor treatments decreased Rox Orange sorghum plant populations but not yield.”
Claim · model-written summary
Alachlor did not decrease Rox Orange sorghum yield at higher seeding rate.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the higher Rox Orange sorghum seeding rate used, both alachlor and metolachlor treatments decreased Rox Orange sorghum plant populations but not yield.”
Claim · model-written summary
Metolachlor did not decrease Rox Orange sorghum yield at higher seeding rate.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the higher Rox Orange sorghum seeding rate used, both alachlor and metolachlor treatments decreased Rox Orange sorghum plant populations but not yield.”
The same questions in other papers
metolachlor · yield · SorghumResults differ
5 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →alachlor · yield · SorghumPositive and negative results
1 in the opposite direction
- positive
metolachlor · pest · SorghumResults agree
1 paper in the same direction as this paper
- 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.