Abstract
Field experiments were conducted in 1991 and 1992 to evaluate differential soybean cultivar tolerance to SAN 582H and metolachlor applied PRE, as influenced by soil moisture. Eighteen d after planting, a 3× rate of SAN 582H (3.0 kg ai ha −1 ) reduced plant populations of ‘Wright,’ ‘Bedford,’ and ‘Stonewall’ and metolachlor did not. At leaf drop, neither herbicide reduced crop height with optimum moisture. With excessive moisture, 3× rates of SAN 582H reduced plant height of Wright, Bedford, ‘Walters,’ ‘Young,’ ‘Brim,’ and ‘Bryan,’ and metolachlor reduced height of ‘Sharkey.’ The greatest yield reductions were due to excessive moisture, regardless of herbicide. Neither herbicide reduced yields with optimum moisture nor did a 1× rate with excessive moisture. However, with excessive moisture, a 3× rate of metolachlor (5.0 kg ai ha −1 ) reduced yield of Bedford by 470 kg ha −1 , and the 3× rate of SAN 582H reduced yield of ‘Rhodes,’ Walters, and ‘Centennial’ more than 500 kg ha −1 . Overall, soybean tolerance to both herbicides was good, but if used above recommended rates and with excessive moisture, injury can occur.
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Claims 11
Claim · model-written summary
Triple-rate SAN 582H reduced populations of Wright, Bedford and Stonewall soybean.
- Taxon
- soybean
Glycine maxt0 - Material
- ‘Wright,’ ‘Bedford,’ and ‘Stonewall’e0
- Treatment
- 3× rate of SAN 582H (3.0 kg ai ha −1 )e0
- Outcome
- plant populationse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a 3× rate of SAN 582H (3.0 kg ai ha −1 ) reduced plant populations of ‘Wright,’ ‘Bedford,’ and ‘Stonewall’”
t0“soybean”
Claim · model-written summary
Metolachlor did not reduce populations of those three cultivars.
- Taxon
- soybeanGlycine maxt0
- Treatment
- metolachlore0
- Outcome
- plant populationse0
- Direction
- did note0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced plant populations of ‘Wright,’ ‘Bedford,’ and ‘Stonewall’ and metolachlor did not.”
t0“soybean”
Claim · model-written summary
Neither herbicide reduced soybean height with optimum moisture.
- Taxon
- soybeanGlycine maxt0
- Treatment
- neither herbicidee0
- Outcome
- crop heighte0
- Direction
- neither herbicide reducede0
- Qualifier
- optimum moisturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neither herbicide reduced crop height with optimum moisture.”
t0“soybean”
Claim · model-written summary
Triple-rate SAN 582H reduced height of six soybean cultivars under excess moisture.
- Taxon
- soybeanGlycine maxt0
- Material
- Wright, Bedford, ‘Walters,’ ‘Young,’ ‘Brim,’ and ‘Bryan,’e0
- Treatment
- 3× rates of SAN 582He0
- Outcome
- plant heighte0
- Direction
- reducede0
- Qualifier
- excessive moisturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With excessive moisture, 3× rates of SAN 582H reduced plant height of Wright, Bedford, ‘Walters,’ ‘Young,’ ‘Brim,’ and ‘Bryan,’”
t0“soybean”
Claim · model-written summary
Metolachlor reduced Sharkey height under excess moisture.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“metolachlor reduced height of ‘Sharkey.’”
t0“soybean”
Claim · model-written summary
Excess moisture caused the largest soybean yield losses regardless of herbicide.
- Taxon
- soybeanGlycine maxt0
- Treatment
- excessive moisturee0
- Outcome
- yielde0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest yield reductions were due to excessive moisture, regardless of herbicide.”
t0“soybean”
Claim · model-written summary
Neither herbicide reduced yields under optimum moisture.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Neither herbicidee0
- Outcome
- yieldse0
- Direction
- Neither herbicide reducede0
- Qualifier
- optimum moisturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither herbicide reduced yields with optimum moisture”
t0“soybean”
Claim · model-written summary
A single rate of either herbicide did not reduce yields under excess moisture.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 1× ratee0
- Outcome
- yieldse0
- Direction
- nor dide0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither herbicide reduced yields with optimum moisture nor did a 1× rate with excessive moisture.”
t0“soybean”
Claim · model-written summary
Triple-rate metolachlor cut Bedford yield by 470 kg ha −1 under excess moisture.
- Taxon
- soybeanGlycine maxt0
- Material
- Bedforde0
- Treatment
- 3× rate of metolachlor (5.0 kg ai ha −1 )e0
- Outcome
- yielde0
- Direction
- reducede0
- Value
- 470 kg ha −1e0
- Qualifier
- excessive moisturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with excessive moisture, a 3× rate of metolachlor (5.0 kg ai ha −1 ) reduced yield of Bedford by 470 kg ha −1”
t0“soybean”
Claim · model-written summary
Triple-rate SAN 582H cut Rhodes, Walters and Centennial yields by more than 500 kg ha −1.
- Taxon
- soybeanGlycine maxt0
- Material
- ‘Rhodes,’ Walters, and ‘Centennial’e0
- Treatment
- 3× rate of SAN 582He0
- Outcome
- yielde0
- Direction
- reducede0
- Value
- more than 500 kg ha −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 3× rate of SAN 582H reduced yield of ‘Rhodes,’ Walters, and ‘Centennial’ more than 500 kg ha −1”
t0“soybean”
Claim · model-written summary
Soybean generally tolerated both herbicides, but excess rate and moisture could cause injury.
- Taxon
- soybeanGlycine maxe0
- Outcome
- soybean tolerance to both herbicides was goode0
- Qualifier
- above recommended rates and with excessive moisturee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overall, soybean tolerance to both herbicides was good, but if used above recommended rates and with excessive moisture, injury can occur.”
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