Abstract
Residual herbicides can cause injury to a future crop. Residual herbicides applied to soybean (Glycine max L. Merr.) or winter wheat (Triticum aestivum L.) may impact cover crops seeded in the same growing season. The objective of this study was to determine the effect of residual herbicides on oilseed radish (Raphanus sativus L.) establishment and growth after 10 postemergence (POST) broadleaf herbicides were applied in winter wheat, and 12 preemergence (PRE) and 7 POST herbicides were applied in soybean. Oilseed radish injury was assessed 14 and 28 days after emergence (DAE) and stand density and biomass were measured 28 DAE. Residual herbicides used for broadleaf weed control in winter wheat caused less than 5% oilseed radish injury and there was no reduction in stand density and biomass. In soybean, imazethapyr applied PRE caused 43 and 48% oilseed radish injury at 14 and 28 DAE, respectively. There was no decrease in oilseed radish stand density and biomass. Imazethapyr applied POST to soybean caused 47 and 59% oilseed radish injury at 14 and 28 DAE, respectively, and decreased oilseed radish biomass by 65%. There was no decrease in oilseed radish stand density. The results from this study conclude that many of the herbicides commonly used in winter wheat and soybean in Ontario do not negatively impact oilseed radish establishment and growth.
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Claims 6
Claim · model-written summary
Residual herbicides used for broadleaf weed control in winter wheat caused less than 5% oilseed radish injury.
- Taxon
- oilseed radishe0
- Treatment
- Residual herbicides used for broadleaf weed control in winter wheate1
- Outcome
- oilseed radish injurye1
- Direction
- lowerinferrede1
- Value
- less than 5%e1
Not reportedComparator
Verbatim
e0“effect of residual herbicides on oilseed radish (Raphanus sativus L.) establishment and growth”
e1“Residual herbicides used for broadleaf weed control in winter wheat caused less than 5% oilseed radish injury and there was no reduction in stand density and biomass”
Claim · model-written summary
Residual herbicides used for broadleaf weed control in winter wheat did not reduce oilseed radish stand density or biomass.
- Taxon
- oilseed radishe0
- Treatment
- Residual herbicides used for broadleaf weed control in winter wheate1
- Outcome
- stand density and biomasse1
- Direction
- no_changeinferrede1
Not reportedComparator
Verbatim
e0“effect of residual herbicides on oilseed radish (Raphanus sativus L.) establishment and growth”
e1“Residual herbicides used for broadleaf weed control in winter wheat caused less than 5% oilseed radish injury and there was no reduction in stand density and biomass”
Claim · model-written summary
Imazethapyr applied PRE in soybean caused 43% and 48% oilseed radish injury at 14 and 28 DAE.
- Taxon
- oilseed radishe0
- Treatment
- imazethapyr applied PREe2
- Outcome
- oilseed radish injurye2
- Direction
- increaseinferrede2
- Value
- 43 and 48%e2
- Qualifier
- at 14 and 28 DAEe2
Not reportedComparator
Verbatim
e0“effect of residual herbicides on oilseed radish (Raphanus sativus L.) establishment and growth”
e2“imazethapyr applied PRE caused 43 and 48% oilseed radish injury at 14 and 28 DAE, respectively”
Claim · model-written summary
Imazethapyr applied PRE in soybean did not reduce oilseed radish stand density or biomass.
- Taxon
- oilseed radishe0
- Treatment
- imazethapyr applied PREe2
- Outcome
- stand density and biomasse4
- Direction
- no_changeinferrede4
Not reportedComparator
Verbatim
e0“effect of residual herbicides on oilseed radish (Raphanus sativus L.) establishment and growth”
e2“imazethapyr applied PRE caused 43 and 48% oilseed radish injury at 14 and 28 DAE, respectively”
e4“There was no decrease in oilseed radish stand density and biomass”
Claim · model-written summary
Imazethapyr applied POST in soybean caused 47% and 59% oilseed radish injury at 14 and 28 DAE.
- Taxon
- oilseed radishe0
- Treatment
- Imazethapyr applied POSTe3
- Outcome
- oilseed radish injurye3
- Direction
- increaseinferrede3
- Value
- 47 and 59%e3
- Qualifier
- at 14 and 28 DAEe3
Not reportedComparator
Verbatim
e0“effect of residual herbicides on oilseed radish (Raphanus sativus L.) establishment and growth”
e3“Imazethapyr applied POST to soybean caused 47 and 59% oilseed radish injury at 14 and 28 DAE, respectively, and decreased oilseed radish biomass by 65%”
Claim · model-written summary
Imazethapyr applied POST in soybean decreased oilseed radish biomass by 65%.
- Taxon
- oilseed radishe0
- Treatment
- Imazethapyr applied POSTe3
- Outcome
- oilseed radish biomasse3
- Direction
- decreasede3
- Value
- 65%e3
Not reportedComparator
Verbatim
e0“effect of residual herbicides on oilseed radish (Raphanus sativus L.) establishment and growth”
e3“Imazethapyr applied POST to soybean caused 47 and 59% oilseed radish injury at 14 and 28 DAE, respectively, and decreased oilseed radish biomass by 65%”