Abstract
Field experiments were conducted to determine the effect of different rates and application times of MON 37500 on downy brome control in winter wheat and on rotational crop injury. In southeastern Washington, MON 37500 applied postemergence at 36 to 72 g ai/ha in the fall and spring controlled downy brome 90 to 97% and 45 to 71%, respectively. MON 37500 was applied postemergence to winter wheat at 18, 36, and 72 g/ha during fall 1995 and spring 1996 near Moscow, ID; Pendleton, OR; and Endicott, WA, to determine its effect on rotational crops planted during spring 1997. At Pendleton, OR, fall applications of MON 37500 at 18, 36, and 72 g/ha applied to actively growing wheat reduced seed yield of spring barley and pea 13 to 59% and 26 to 29%, respectively, when these crops followed winter wheat in the rotation. At this site, spring applications of 36 and 72 g/ha reduced seed yield of spring barley 17 to 34%; when applied in the fall or spring, MON 37500 reduced canola yield 31 to 73%. MON 37500 at 18 g/ha in the spring reduced pea biomass 32% at Endicott. Aboveground biomass and seed yield of barley, pea, lentil, and mustard at Moscow were not affected by MON 37500 carryover. However, using a grain sorghum bioassay, predicted final concentrations of MON 37500 in soil at all three locations 360 d after treatment (DAT) was similar, ranging from 0.5 to 2 ng ai/g. In growth chamber herbicide dose–response studies, grain sorghum shoot height was reduced more at lower doses (0.025 to 5 ng/g) of MON 37500 in Pendleton soil than in soils from the other field locations. Perhaps the greater rotational crop injury observed at the Pendleton location was partly related to greater soil activity of the herbicide.
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Claims 14
Claim · model-written summary
Fall MON 37500 controlled downy brome by 90 to 97%.
- Taxon
- winter wheat
Triticum aestivume1 - Treatment
- MON 37500 applied postemergence at 36 to 72 g ai/ha in the falle0
- Interactor
- downy brome
Bromus tectorume0weed - Outcome
- downy bromee0
- Direction
- controllede0
- Value
- 90 to 97%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MON 37500 applied postemergence at 36 to 72 g ai/ha in the fall and spring controlled downy brome 90 to 97% and 45 to 71%, respectively”
e1“downy brome control in winter wheat”
Claim · model-written summary
Spring MON 37500 controlled downy brome by 45 to 71%.
- Taxon
- winter wheatTriticum aestivume1
- Treatment
- MON 37500 applied postemergence at 36 to 72 g ai/ha in the fall and springe0
- Interactor
- downy bromeBromus tectorume0weed
- Outcome
- downy bromee0
- Direction
- controllede0
- Value
- 45 to 71%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MON 37500 applied postemergence at 36 to 72 g ai/ha in the fall and spring controlled downy brome 90 to 97% and 45 to 71%, respectively”
e1“downy brome control in winter wheat”
Claim · model-written summary
Fall herbicide carryover reduced spring barley seed yield 13 to 59% at Pendleton.
- Taxon
- spring barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- MON 37500 at 18, 36, and 72 g/hae0
- Outcome
- seed yielde0
- Direction
- reducede0
- Value
- 13 to 59%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“fall applications of MON 37500 at 18, 36, and 72 g/ha applied to actively growing wheat reduced seed yield of spring barley and pea 13 to 59% and 26 to 29%, respectively”
Claim · model-written summary
Fall herbicide carryover reduced pea seed yield 26 to 29%.
- Taxon
- pea
Lathyrus oleraceuse0 - Treatment
- MON 37500 at 18, 36, and 72 g/hae0
- Outcome
- seed yielde0
- Direction
- reducede0
- Value
- 26 to 29%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fall applications of MON 37500 at 18, 36, and 72 g/ha applied to actively growing wheat reduced seed yield of spring barley and pea 13 to 59% and 26 to 29%, respectively”
Claim · model-written summary
Spring applications reduced barley seed yield 17 to 34%.
- Taxon
- spring barleyHordeum vulgaree0
- Treatment
- spring applications of 36 and 72 g/hae0
- Outcome
- seed yielde0
- Direction
- reducede0
- Value
- 17 to 34%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spring applications of 36 and 72 g/ha reduced seed yield of spring barley 17 to 34%”
Claim · model-written summary
Fall or spring herbicide reduced canola yield 31 to 73%.
- Taxon
- canola
.jpg?width=60)
Brassica napus var. napuse0 - Treatment
- MON 37500e0
- Outcome
- canola yielde0
- Direction
- reducede0
- Value
- 31 to 73%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“when applied in the fall or spring, MON 37500 reduced canola yield 31 to 73%”
Claim · model-written summary
Spring herbicide reduced pea biomass 32% at Endicott.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- MON 37500 at 18 g/ha in the springe0
- Outcome
- pea biomasse0
- Direction
- reducede0
- Value
- 32%e0
- Setting
- Endicotte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MON 37500 at 18 g/ha in the spring reduced pea biomass 32% at Endicott”
Claim · model-written summary
Herbicide carryover did not affect barley, pea and lentil biomass or seed yield at Moscow.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- MON 37500 carryovere0
- Outcome
- Aboveground biomass and seed yielde0
- Direction
- not affectede0
- Setting
- Moscowe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aboveground biomass and seed yield of barley, pea, lentil, and mustard at Moscow were not affected by MON 37500 carryover”
Claim · model-written summary
Herbicide carryover did not affect pea biomass or seed yield at Moscow.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- MON 37500 carryovere0
- Outcome
- Aboveground biomass and seed yielde0
- Direction
- not affectede0
- Setting
- Moscowe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aboveground biomass and seed yield of barley, pea, lentil, and mustard at Moscow were not affected by MON 37500 carryover”
Claim · model-written summary
Herbicide carryover did not affect lentil biomass or seed yield at Moscow.
- Taxon
- lentil
Lens culinarise0 - Treatment
- MON 37500 carryovere0
- Outcome
- Aboveground biomass and seed yielde0
- Direction
- not affectede0
- Setting
- Moscowe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aboveground biomass and seed yield of barley, pea, lentil, and mustard at Moscow were not affected by MON 37500 carryover”
Claim · model-written summary
Herbicide carryover did not affect mustard biomass or seed yield at Moscow.
- Taxon
- mustarde0
- Treatment
- MON 37500 carryovere0
- Outcome
- Aboveground biomass and seed yielde0
- Direction
- not affectede0
- Setting
- Moscowe0
Not reportedComparator
Verbatim
e0“Aboveground biomass and seed yield of barley, pea, lentil, and mustard at Moscow were not affected by MON 37500 carryover”
Claim · model-written summary
Predicted soil herbicide concentrations were similar across sites at 360 days.
- Outcome
- predicted final concentrations of MON 37500 in soile0
- Direction
- similare0
- Value
- 0.5 to 2 ng ai/ge0
- Qualifier
- 360 d after treatment (DAT)e0
Not reportedTaxon
Verbatim
e0“predicted final concentrations of MON 37500 in soil at all three locations 360 d after treatment (DAT) was similar, ranging from 0.5 to 2 ng ai/g”
Claim · model-written summary
Low herbicide doses reduced sorghum shoot height more in Pendleton soil.
- Taxon
- grain sorghum
Sorghum bicolore0 - Treatment
- lower doses (0.025 to 5 ng/g) of MON 37500e0
- Outcome
- shoot heighte0
- Direction
- reduced moree0
- Comparator
- soils from the other field locationse0
- Setting
- Pendleton soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain sorghum shoot height was reduced more at lower doses (0.025 to 5 ng/g) of MON 37500 in Pendleton soil than in soils from the other field locations”
Claim · model-written summary
Greater soil herbicide activity may partly explain greater crop injury at Pendleton.
Verbatim
e0“greater rotational crop injury observed at the Pendleton location was partly related to greater soil activity of the herbicide”
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herbicide · Bromus tectorum · Triticum aestivum (wheat)Results agree
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