Abstract
Belfry, K. D., Soltani, N., Brown, L. R. and Sikkema, P. H. 2015. Tolerance of identity preserved soybean cultivars to preemergence herbicides. Can. J. Plant Sci. 95: 719–726. Six field trials were conducted over a 3-yr period (2011 to 2013) near Exeter and Ridgetown, Ontario, Canada, to assess the tolerance of seven identity-preserved (IP) soybean cultivars to preemergence (PRE) herbicides applied at 2×the recommended dose. All cultivars demonstrated excellent tolerance to dimethenamid-P, pyroxasulfone, S-metolachlor, chlorimuron-ethyl, clomazone, cloransulam-methyl, flumetsulam and imazethapyr, showing 5% or less injury. At Exeter, linuron caused as much as 13 and 18% injury at 2 and 4 wk after soybean emergence, while injury due to metribuzin was as high as 22 and 47% for the same dates, respectively. At Exeter, linuron, metribuzin and S-metolachlor plus metribuzin reduced soybean height up to 17, 41 and 24%, respectively; soybean height was generally not affected at the Ridgetown sites. At Exeter, metribuzin reduced soybean yield up to 38% for cultivars S03W4, Madison and OAC Lakeview, while S23T5 was not significantly reduced. On the contrary, metribuzin yield loss at Ridgetown was nonsignificant. Results from this study suggest that PRE application of metribuzin at 2× field dose has potential to cause unacceptable injury and yield reduction in IP soybeans under some soil and climatic conditions and may vary according to cultivar.
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Claims 13
Claim · model-written summary
All cultivars showed no more than 5% injury under eight named PRE herbicides.
- Taxon
- soybean
Glycine maxt0 - Treatment
- dimethenamid-P, pyroxasulfone, S-metolachlor, chlorimuron-ethyl, clomazone, cloransulam-methyl, flumetsulam and imazethapyre0
- Outcome
- injurye0
- Direction
- 5% or lesse0
- Value
- 5% or lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“All cultivars demonstrated excellent tolerance to dimethenamid-P, pyroxasulfone, S-metolachlor, chlorimuron-ethyl, clomazone, cloransulam-methyl, flumetsulam and imazethapyr, showing 5% or less injury”
Claim · model-written summary
At Exeter, linuron caused up to 13% soybean injury at two weeks.
- Taxon
- soybeanGlycine maxt0
- Treatment
- linurone0
- Outcome
- injurye0
- Direction
- as much ase0
- Value
- 13e0
- Qualifier
- 2e0
- Setting
- Exetere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“At Exeter, linuron caused as much as 13 and 18% injury at 2 and 4 wk after soybean emergence”
Claim · model-written summary
At Exeter, linuron caused up to 18% injury at four weeks.
- Taxon
- soybeanGlycine maxt0
- Treatment
- linurone0
- Outcome
- injurye0
- Direction
- as much ase0
- Value
- 18%e0
- Qualifier
- 4 wke0
- Setting
- Exetere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“At Exeter, linuron caused as much as 13 and 18% injury at 2 and 4 wk after soybean emergence”
Claim · model-written summary
At Exeter, metribuzin caused up to 22% injury at two weeks.
- Taxon
- soybeanGlycine maxt0
- Treatment
- metribuzine0
- Outcome
- injurye0
- Direction
- as high ase0
- Value
- 22e0
- Qualifier
- 2e0
- Setting
- Exetere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“At Exeter, linuron caused as much as 13 and 18% injury at 2 and 4 wk after soybean emergence, while injury due to metribuzin was as high as 22 and 47% for the same dates, respectively”
Claim · model-written summary
At Exeter, metribuzin caused up to 47% injury at four weeks.
- Taxon
- soybeanGlycine maxt0
- Treatment
- metribuzine0
- Outcome
- injurye0
- Direction
- as high ase0
- Value
- 47%e0
- Qualifier
- 4 wke0
- Setting
- Exetere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“At Exeter, linuron caused as much as 13 and 18% injury at 2 and 4 wk after soybean emergence, while injury due to metribuzin was as high as 22 and 47% for the same dates, respectively”
Claim · model-written summary
At Exeter, linuron reduced soybean height by up to 17%.
- Taxon
- soybeanGlycine maxt0
- Treatment
- linurone0
- Outcome
- soybean heighte0
- Direction
- reducede0
- Value
- 17e0
- Setting
- Exetere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“At Exeter, linuron, metribuzin and S-metolachlor plus metribuzin reduced soybean height up to 17, 41 and 24%, respectively”
Claim · model-written summary
At Exeter, metribuzin reduced soybean height by up to 41%.
- Taxon
- soybeanGlycine maxt0
- Treatment
- metribuzine0
- Outcome
- soybean heighte0
- Direction
- reducede0
- Value
- 41e0
- Setting
- Exetere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“At Exeter, linuron, metribuzin and S-metolachlor plus metribuzin reduced soybean height up to 17, 41 and 24%, respectively”
Claim · model-written summary
At Exeter, S-metolachlor plus metribuzin reduced soybean height by up to 24%.
- Taxon
- soybeanGlycine maxt0
- Treatment
- S-metolachlor plus metribuzine0
- Outcome
- soybean heighte0
- Direction
- reducede0
- Value
- 24%e0
- Setting
- Exetere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“At Exeter, linuron, metribuzin and S-metolachlor plus metribuzin reduced soybean height up to 17, 41 and 24%, respectively”
Claim · model-written summary
Soybean height generally was unaffected at Ridgetown.
- Taxon
- soybeanGlycine maxt0
- Outcome
- soybean heighte0
- Direction
- not affectede0
- Setting
- Ridgetown sitese0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“soybean height was generally not affected at the Ridgetown sites”
Claim · model-written summary
At Exeter, metribuzin lowered yield up to 38% for S03W4, Madison and OAC Lakeview.
- Taxon
- soybeanGlycine maxt0
- Material
- S03W4, Madison and OAC Lakeviewe0
- Treatment
- metribuzine0
- Outcome
- soybean yielde0
- Direction
- reducede0
- Value
- 38%e0
- Setting
- Exetere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“At Exeter, metribuzin reduced soybean yield up to 38% for cultivars S03W4, Madison and OAC Lakeview”
Claim · model-written summary
At Exeter, metribuzin did not significantly reduce yield of S23T5.
- Taxon
- soybeanGlycine maxt0
- Material
- S23T5e0
- Outcome
- S23T5e0
- Direction
- not significantly reducede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“S23T5 was not significantly reduced”
Claim · model-written summary
Metribuzin yield loss at Ridgetown was nonsignificant.
- Taxon
- soybeanGlycine maxt0
- Treatment
- metribuzine0
- Outcome
- yield losse0
- Setting
- Ridgetowne0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“metribuzin yield loss at Ridgetown was nonsignificant”
Claim · model-written summary
The authors warn that 2× field dose PRE metribuzin may cause unacceptable injury and yield loss depending on cultivar and conditions.
- Taxon
- soybeansGlycine maxe0
- Outcome
- PRE application of metribuzin at 2× field dosee0
- Qualifier
- under some soil and climatic conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“PRE application of metribuzin at 2× field dose has potential to cause unacceptable injury and yield reduction in IP soybeans under some soil and climatic conditions and may vary according to cultivar”
The same questions in other papers
metribuzin · yield · Glycine max (soybean)Results differ
23 papers in the same direction as this paper · 37 in the opposite direction
- positive
- negative
- positive
57 papers more in this group
See all 61 papers →cloransulam-methyl · crop injury · Glycine max (soybean)Positive and negative results
1 in the opposite direction
- negative
chlorimuron-ethyl · crop injury · Glycine max (soybean)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
pyroxasulfone · crop injury · Glycine max (soybean)Positive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
2 papers more in this group
See all 6 papers →linuron · crop injury · Glycine max (soybean)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
3 papers more in this group
See all 7 papers →metribuzin · growth · Glycine max (soybean)Positive and negative results
4 papers in the same direction as this paper · 3 in the opposite direction
- negative
- positive
- positive
4 papers more in this group
See all 8 papers →Imazethapyr · crop injury · Glycine max (soybean)Positive and negative results
2 papers in the same direction as this paper · 13 in the opposite direction
- no effect
- negative
- negative
12 papers more in this group
See all 16 papers →metribuzin · crop injury · Glycine max (soybean)Positive and negative results
17 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
19 papers more in this group
See all 23 papers →8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.