Abstract
Soltani, N., Nurse, R. E., Robinson, R. E. and Sikkema, P. H. 2011. Effect of ammonium sulfate and water hardness on glyphosate and glufosinate activity in corn. Can. J. Plant Sci. 91: 1053-1059. Eight field trials were conducted over a 3-yr period (2008 to 2010) near Harrow and Ridgetown, Ontario, to evaluate the effect of water hardness (distilled: 0 ppm; intermediate: 353 ppm; and very hard 1799 ppm) on full label doses of glyphosate (900 g a.e. ha-1) and glufosinate (400 g a.i. ha-1) [with and without ammonium sulfate (AMS) at 2.5 L ha-1] efficacy in corn. There was no effect of water hardness on control of velvetleaf (ABUTH), redroot pigweed (AMARE), common lambsquarters (CHEAL), and annual grasses green foxtail (SETVI) and barnyardgrass (ECHCG) when glyphosate was applied with or without the AMS. There was also no difference in yield of corn with various water sources when glyphosate was applied with or without AMS. Glyphosate applied with various water sources with or without AMS controlled ABUTH, AMARE, CHEAL, and annual grasses better than glufosinate with or without AMS. Glufosinate with AMS, especially at the 1799 ppm water hardness, generally controlled ABUTH, AMARE, and CHEAL better than glufosinate without AMS, but there was no improvement in annual grass control. Contrasts indicated an 11% increase in yield when glufosinate was applied with AMS compared with when applied without AMS. Based on these results water hardness and AMS had little benefit on the efficacy of glyphosate in corn; however, efficacy of glufosinate was improved when applied with AMS at high water hardness.
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Claims 7
Claim · model-written summary
Water hardness had no effect on glyphosate control of velvetleaf, redroot pigweed and common lambsquarters in corn, with or without AMS.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- water hardnesse0
- Interactor
- velvetleaf
Abutilon theophrastie0weed - Second interactor
- redroot pigweede0weed
- Outcome
- control of velvetleaf (ABUTH), redroot pigweed (AMARE)e0
- Direction
- no effecte0
- Qualifier
- common lambsquarterse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no effect of water hardness on control of velvetleaf (ABUTH), redroot pigweed (AMARE), common lambsquarters (CHEAL)”
t0“activity in corn”
Claim · model-written summary
Water hardness had no effect on glyphosate control of the annual grasses green foxtail and barnyardgrass in corn, with or without AMS.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- water hardnesse1
- Interactor
- green foxtaile0weed
- Second interactor
- barnyardgrass
Echinochloa crus-gallie0weed - Outcome
- annual grassese0
- Direction
- no effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“annual grasses green foxtail (SETVI) and barnyardgrass (ECHCG) when glyphosate was applied with or without the AMS”
e1“no effect of water hardness”
t0“activity in corn”
Claim · model-written summary
Corn yield did not differ among water sources when glyphosate was applied with or without AMS.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- various water sourcese0
- Outcome
- yield of corne0
- Direction
- no differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no difference in yield of corn with various water sources when glyphosate was applied with or without AMS”
Claim · model-written summary
Glyphosate with various water sources, with or without AMS, controlled velvetleaf, redroot pigweed, common lambsquarters and annual grasses better than glufosinate with or without AMS.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Glyphosate applied with various water sources with or without AMSe0
- Interactor
- ABUTHe0weed
- Second interactor
- AMAREe0weed
- Outcome
- controlled ABUTH, AMARE, CHEAL, and annual grassese0
- Direction
- bettere0
- Qualifier
- CHEAL, and annual grassese0
- Comparator
- glufosinate with or without AMSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate applied with various water sources with or without AMS controlled ABUTH, AMARE, CHEAL, and annual grasses better than glufosinate with or without AMS”
t0“activity in corn”
Claim · model-written summary
Glufosinate with AMS, especially at 1799 ppm water hardness, generally controlled velvetleaf, redroot pigweed and common lambsquarters better than glufosinate without AMS.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Glufosinate with AMSe0
- Interactor
- ABUTHe0weed
- Second interactor
- AMAREe0weed
- Outcome
- controlled ABUTH, AMARE, and CHEALe0
- Direction
- bettere0
- Qualifier
- especially at the 1799 ppm water hardnesse0
- Comparator
- glufosinate without AMSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glufosinate with AMS, especially at the 1799 ppm water hardness, generally controlled ABUTH, AMARE, and CHEAL better than glufosinate without AMS”
t0“activity in corn”
Claim · model-written summary
Glufosinate with AMS gave no improvement in annual grass control compared with glufosinate without AMS.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Glufosinate with AMSe0
- Outcome
- annual grass controle0
- Direction
- no improvemente0
- Comparator
- glufosinate without AMSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glufosinate with AMS, especially at the 1799 ppm water hardness, generally controlled ABUTH, AMARE, and CHEAL better than glufosinate without AMS, but there was no improvement in annual grass control”
t0“activity in corn”
Claim · model-written summary
Contrasts indicated an 11% increase in corn yield when glufosinate was applied with AMS compared with without AMS.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- glufosinate was applied with AMSe0
- Outcome
- yielde0
- Direction
- increasee0
- Value
- 11%e0
- Comparator
- applied without AMSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Contrasts indicated an 11% increase in yield when glufosinate was applied with AMS compared with when applied without AMS”
t0“activity in corn”
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glyphosate · control · Zea mays (maize)Positive and negative results
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See all 41 papers →glufosinate · control · Zea mays (maize)Results agree
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See all 22 papers →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.