Abstract
Spring wheat tolerance to DE-750 applications was studied in Balcarce, Argentina, during 2002 and 2003. Rates of DE-750 evaluated were 6 and 12 g ae/ha tank-mixed either with metsulfuron at 4 g ai/ha or 2,4-D at 240 g ae/ha and applied at three different Zadoks growth stages: Zd 15/22, Zd 16/23, and Zd 32. The first two Zadoks stages corresponded to Nerson's elongated apex with two or more visible primordia and the glumes differentiation stage, respectively. Dicamba plus metsulfuron and picloram plus 2,4-D were included as comparative treatments and applied at the same growth stage. In both 2002 and 2003, Baguette 10 tolerated the DE-750 plus metsulfuron and DE-750 plus 2,4-D mixtures sprayed during the first two applications (Zd 15/22 and Zd 16/23). However, DE-750 plus metsulfuron (12 g/ha 4 g/ha) and DE-750 plus 2,4-D (6 g/ha 240 g/ha and 12 g/ha 240 g/ha) sprayed during the last application (Zd 32) caused significant yield reductions in the 2002 spring season. On the other hand, picloram plus 2,4-D at the last growth stage reduced yield 39% in 2002 but did not affect yield in 2003. We suggest that an excess of precipitation after application and above-normal air temperatures during grain fill may have increased crop injury with herbicides applied at the last growth stage. In short, the effect of different DE-750 mixtures with metsulfuron or 2,4-D on wheat yield could be the result of the interactions among environmental conditions, and application timing.Nomenclature: DE-7501 (4-amino-3,6-dichloropyridine-2-carboxilic acid); dicamba; metsulfuron; picloram; 2,4-D butyl ester; spring wheat, Triticum aestivum L., ‘Baguette 10’.
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Claims 7
Claim · model-written summary
Baguette 10 tolerated DE-750 plus metsulfuron applied at the first two growth stages in both years.
- Taxon
- Spring Wheat
Triticum aestivumt0 - Material
- Baguette 10e0
- Organ / stage
- Zd 15/22 and Zd 16/23e0
- Treatment
- DE-750 plus metsulfurone0
- Outcome
- toleratede0
Not reportedComparatorSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both 2002 and 2003, Baguette 10 tolerated the DE-750 plus metsulfuron and DE-750 plus 2,4-D mixtures sprayed during the first two applications (Zd 15/22 and Zd 16/23)”
t0“Spring Wheat Tolerance to De-750 Applications at Different Growth Stages”
Claim · model-written summary
Baguette 10 tolerated DE-750 plus 2,4-D applied at the first two growth stages in both years.
- Taxon
- Spring WheatTriticum aestivumt0
- Material
- Baguette 10e0
- Organ / stage
- Zd 15/22 and Zd 16/23e0
- Treatment
- DE-750 plus 2,4-De0
- Outcome
- toleratede0
Not reportedComparatorSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both 2002 and 2003, Baguette 10 tolerated the DE-750 plus metsulfuron and DE-750 plus 2,4-D mixtures sprayed during the first two applications (Zd 15/22 and Zd 16/23)”
t0“Spring Wheat Tolerance to De-750 Applications at Different Growth Stages”
Claim · model-written summary
DE-750 plus metsulfuron (12 g/ha 4 g/ha) at Zd 32 significantly reduced Baguette 10 yield in 2002.
- Taxon
- Spring WheatTriticum aestivumt0
- Organ / stage
- Zd 32e0
- Treatment
- DE-750 plus metsulfuron (12 g/ha 4 g/ha)e0
- Outcome
- yielde0
- Direction
- reductionse0
- Qualifier
- 2002 spring seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DE-750 plus metsulfuron (12 g/ha 4 g/ha) and DE-750 plus 2,4-D (6 g/ha 240 g/ha and 12 g/ha 240 g/ha) sprayed during the last application (Zd 32) caused significant yield reductions in the 2002 spring season”
t0“Spring Wheat Tolerance to De-750 Applications at Different Growth Stages”
Claim · model-written summary
DE-750 plus 2,4-D (6 g/ha 240 g/ha at Zd 32 significantly reduced Baguette 10 yield in 2002.
- Taxon
- Spring WheatTriticum aestivumt0
- Organ / stage
- Zd 32e0
- Treatment
- DE-750 plus 2,4-D (6 g/ha 240 g/hae0
- Outcome
- yielde0
- Direction
- reductionse0
- Qualifier
- 2002 spring seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DE-750 plus metsulfuron (12 g/ha 4 g/ha) and DE-750 plus 2,4-D (6 g/ha 240 g/ha and 12 g/ha 240 g/ha) sprayed during the last application (Zd 32) caused significant yield reductions in the 2002 spring season”
t0“Spring Wheat Tolerance to De-750 Applications at Different Growth Stages”
Claim · model-written summary
12 g/ha 240 g/ha at Zd 32 significantly reduced Baguette 10 yield in 2002.
- Taxon
- Spring WheatTriticum aestivumt0
- Organ / stage
- Zd 32e0
- Treatment
- 12 g/ha 240 g/hae0
- Outcome
- yielde0
- Direction
- reductionse0
- Qualifier
- 2002 spring seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DE-750 plus metsulfuron (12 g/ha 4 g/ha) and DE-750 plus 2,4-D (6 g/ha 240 g/ha and 12 g/ha 240 g/ha) sprayed during the last application (Zd 32) caused significant yield reductions in the 2002 spring season”
t0“Spring Wheat Tolerance to De-750 Applications at Different Growth Stages”
Claim · model-written summary
Picloram plus 2,4-D reduced yield by 39% at the last stage in 2002.
- Taxon
- Spring WheatTriticum aestivumt0
- Treatment
- picloram plus 2,4-De0
- Outcome
- yielde0
- Direction
- reducede0
- Value
- 39%e0
- Qualifier
- 2002e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“picloram plus 2,4-D at the last growth stage reduced yield 39% in 2002 but did not affect yield in 2003”
t0“Spring Wheat Tolerance to De-750 Applications at Different Growth Stages”
Claim · model-written summary
Picloram plus 2,4-D did not affect yield at the last stage in 2003.
- Taxon
- Spring WheatTriticum aestivumt0
- Treatment
- picloram plus 2,4-De0
- Outcome
- yielde0
- Direction
- did not affecte0
- Qualifier
- 2003e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“picloram plus 2,4-D at the last growth stage reduced yield 39% in 2002 but did not affect yield in 2003”
t0“Spring Wheat Tolerance to De-750 Applications at Different Growth Stages”
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