Abstract
There is little information on effect of pendimethalin residues in the soil used for weed management in dry bean, on winter wheat seeded 3 to 4 months after application in Ontario. A total of four field experiments were conducted over a four-year period (2008-2011) in Ontario to evaluate the effect of pendimethalin residues on winter wheat injury and yield grown in rotation with dry bean. Pendimethalin, applied PPI in dry bean, at 1080 and 2160 g ai ha-1 caused 1% to 3% injury and 4% to 9% winter wheat injury evaluated 1 and 4 weeks after emergence (WAE) in the fall and on approximately the first of May, June and July of the following year. Pendimethalin applied PPI in the spring at 1X or 2X manufacturer’s recommended rate (1080 or 2160 g ai ha-1) in dry bean caused no adverse effect on the winter wheat height evaluated in July of the following year and no adverse effect on maturity at harvest. Pendimethalin applied PPI at 1080 g ai ha-1 in dry bean in the spring caused no adverse effect on winter wheat yield, but pendimethalin applied at 2160 g ai ha-1 rate caused a 4% reduction in yield of winter wheat. Based on this study, pendimethalin applied PPI at 2160 g ai ha-1 has potential to cause injury and yield reduction in winter wheat grown in rotation with dry bean under Ontario environmental conditions.
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Claims 6
Claim · model-written summary
Pendimethalin residues from dry bean weed control caused 4% to 9% injury to winter wheat evaluated 1 and 4 weeks after emergence.
- Taxon
- winter wheat
Triticum aestivume1 - Treatment
- Pendimethalin, applied PPI in dry bean, at 1080 and 2160 g ai ha-1e1
- Outcome
- winter wheat injurye1
- Direction
- increaseinferrede1
- Value
- 4% to 9%e1
- Qualifier
- evaluated 1 and 4 weeks after emergence (WAE)e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Pendimethalin, applied PPI in dry bean, at 1080 and 2160 g ai ha-1 caused 1% to 3% injury and 4% to 9% winter wheat injury evaluated 1 and 4 weeks after emergence (WAE)”
Claim · model-written summary
Pendimethalin applied PPI in dry bean at 1080 and 2160 g ai ha-1 caused 1% to 3% injury.
- Taxon
- dry beane1
- Treatment
- Pendimethalin, applied PPI in dry bean, at 1080 and 2160 g ai ha-1e1
- Outcome
- injurye1
- Direction
- increaseinferrede1
- Value
- 1% to 3%e1
- Qualifier
- evaluated 1 and 4 weeks after emergence (WAE)e1
Not reportedComparator
Verbatim
e1“Pendimethalin, applied PPI in dry bean, at 1080 and 2160 g ai ha-1 caused 1% to 3% injury and 4% to 9% winter wheat injury evaluated 1 and 4 weeks after emergence (WAE)”
Claim · model-written summary
Pendimethalin applied PPI in spring at 1X or 2X the recommended rate had no adverse effect on winter wheat height evaluated in July of the following year.
- Taxon
- winter wheatTriticum aestivume2
- Treatment
- Pendimethalin applied PPI in the spring at 1X or 2Xe3
- Outcome
- winter wheat heighte2
- Direction
- no adverse effecte2
- Qualifier
- evaluated in July of the following yeare2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“caused no adverse effect on the winter wheat height evaluated in July of the following year”
e3“Pendimethalin applied PPI in the spring at 1X or 2X”
Claim · model-written summary
Pendimethalin applied PPI in spring at 1X or 2X the recommended rate had no adverse effect on maturity at harvest of winter wheat.
- Taxon
- winter wheatTriticum aestivume2
- Treatment
- Pendimethalin applied PPI in the spring at 1X or 2Xe3
- Outcome
- maturity at harveste4
- Direction
- no adverse effecte4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“caused no adverse effect on the winter wheat height evaluated in July of the following year”
e3“Pendimethalin applied PPI in the spring at 1X or 2X”
e4“no adverse effect on maturity at harvest”
Claim · model-written summary
Pendimethalin applied PPI at 1080 g ai ha-1 in dry bean in spring had no adverse effect on winter wheat yield.
- Taxon
- winter wheatTriticum aestivume5
- Treatment
- Pendimethalin applied PPI at 1080 g ai ha-1 in dry bean in the springe5
- Outcome
- winter wheat yielde5
- Direction
- no adverse effecte5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Pendimethalin applied PPI at 1080 g ai ha-1 in dry bean in the spring caused no adverse effect on winter wheat yield”
Claim · model-written summary
Pendimethalin applied at 2160 g ai ha-1 caused a 4% reduction in winter wheat yield.
- Taxon
- winter wheatTriticum aestivume6
- Treatment
- pendimethalin applied at 2160 g ai ha-1 ratee6
- Outcome
- yield of winter wheate6
- Direction
- reductione6
- Value
- 4%e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“pendimethalin applied at 2160 g ai ha-1 rate caused a 4% reduction in yield of winter wheat”
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See all 8 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.