Abstract
Iron‐deficiency chlorosis is common when soybean [ Glycine max (L.) Merr.] is grown on calcareous soils. The objective of this study was to compare the relative effectiveness of cultivar selection, foliar sprays, and FeEDDHA seed treatment for reducing chlorosis and increasing the yield of soybean planted in 15‐cm rows. Three cultivars (‘Glacier’, ‘Council’, and ‘Traill’) were grown in a factorial combination with two levels of foliar spray (control vs. two FeEDTA sprays) and two levels of seed treatment (control vs. FeEDDHA seed treatment). The cultivars gave an expected chlorosis response, with Glacier being the most susceptible, and Traill being the most resistant. Foliar sprays significantly ( P ≤ 0.05) reduced chlorosis at two sites. Seed treatment with FeEDDHA did not reduce chlorosis although this treatment was effective in prior studies with soybean planted in 76‐cm rows. Iron treatments did not reduce the chlorosis scores of Glacier to the level of Council or Traill without Fe treatments. Seed yields were significantly different for cultivars at all sites. Averaged across sites and Fe treatments, the yields were 1361, 1913, and 2203 kg ha −1 , for Glacier, Council, and Traill, respectively. Foliar sprays tended to increase the yield of Glacier at two sites and significantly increased the yield of all three cultivars at another site. The yield responses to foliar sprays, when obtained, were about 300 kg ha −1 . FeEDDHA seed treatment did not increase seed yield. Cultivar selection remains the most practical control measure for Fe‐deficiency chlorosis of soybean grown in narrow rows.
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Claims 14
Claim · model-written summary
Cultivar Glacier was the most susceptible to iron-deficiency chlorosis.
- Taxon
- soybean
Glycine maxe0 - Material
- Glaciere1
- Outcome
- chlorosis responsee1
- Direction
- most susceptiblee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e1“The cultivars gave an expected chlorosis response, with Glacier being the most susceptible, and Traill being the most resistant”
Claim · model-written summary
Cultivar Traill was the most resistant to iron-deficiency chlorosis.
- Taxon
- soybeanGlycine maxe0
- Material
- Traille1
- Outcome
- chlorosis responsee1
- Direction
- most resistante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e1“The cultivars gave an expected chlorosis response, with Glacier being the most susceptible, and Traill being the most resistant”
Claim · model-written summary
Foliar sprays significantly reduced chlorosis at two sites compared with the control.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Foliar sprayse2
- Outcome
- chlorosise2
- Direction
- reducede2
- Qualifier
- P ≤ 0.05e2
- Comparator
- controle3
- Setting
- two sitese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e2“Foliar sprays significantly ( P ≤ 0.05) reduced chlorosis at two sites”
e3“two levels of foliar spray (control vs. two FeEDTA sprays)”
Claim · model-written summary
FeEDDHA seed treatment did not reduce chlorosis compared with the control.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Seed treatment with FeEDDHAe4
- Outcome
- chlorosise4
- Direction
- did not reducee4
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e4“Seed treatment with FeEDDHA did not reduce chlorosis”
e1“two levels of seed treatment (control vs. FeEDDHA seed treatment)”
Claim · model-written summary
Iron treatments did not reduce chlorosis scores of Glacier to the level of Council or Traill without Fe treatments.
- Taxon
- soybeanGlycine maxe0
- Material
- Glaciere5
- Treatment
- Iron treatmentse5
- Outcome
- chlorosis scorese5
- Direction
- did not reducee5
- Comparator
- Council or Traill without Fe treatmentse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e5“Iron treatments did not reduce the chlorosis scores of Glacier to the level of Council or Traill without Fe treatments”
Claim · model-written summary
Seed yields were significantly different among soybean cultivars at all sites.
- Taxon
- soybeanGlycine maxe0
- Outcome
- Seed yieldse6
- Qualifier
- significantly different for cultivarse6
- Setting
- all sitese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e6“Seed yields were significantly different for cultivars at all sites”
Claim · model-written summary
Averaged across sites and Fe treatments, Glacier yielded 1361 (per the reported list) of seed yield.
- Taxon
- soybeanGlycine maxe0
- Material
- Glaciere7
- Outcome
- yieldse7
- Value
- 1361e7
- Qualifier
- Averaged across sites and Fe treatmentse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e7“Averaged across sites and Fe treatments, the yields were 1361, 1913, and 2203 kg ha −1 , for Glacier, Council, and Traill, respectively”
Claim · model-written summary
Averaged across sites and Fe treatments, Council yielded 1913 of seed yield.
- Taxon
- soybeanGlycine maxe0
- Material
- Councile7
- Outcome
- yieldse7
- Value
- 1913e7
- Qualifier
- Averaged across sites and Fe treatmentse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e7“Averaged across sites and Fe treatments, the yields were 1361, 1913, and 2203 kg ha −1 , for Glacier, Council, and Traill, respectively”
Claim · model-written summary
Averaged across sites and Fe treatments, Traill yielded 2203 of seed yield.
- Taxon
- soybeanGlycine maxe0
- Material
- Traille7
- Outcome
- yieldse7
- Value
- 2203e7
- Qualifier
- Averaged across sites and Fe treatmentse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e7“Averaged across sites and Fe treatments, the yields were 1361, 1913, and 2203 kg ha −1 , for Glacier, Council, and Traill, respectively”
Claim · model-written summary
Foliar sprays tended to increase soybean yield of Glacier at two sites.
- Taxon
- soybeanGlycine maxe0
- Material
- Glaciere1
- Treatment
- Foliar sprayse1
- Outcome
- yielde1
- Direction
- increasee1
- Comparator
- controle3
- Setting
- two sitese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e3“two levels of foliar spray (control vs. two FeEDTA sprays)”
e1“Foliar sprays tended to increase the yield of Glacier at two sites”
Claim · model-written summary
Foliar sprays significantly increased yield of all three cultivars at another site.
- Taxon
- soybeanGlycine maxe0
- Material
- all three cultivarse1
- Treatment
- foliar spraye3
- Outcome
- yielde1
- Direction
- increasede1
- Comparator
- controle3
- Setting
- another sitee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e3“two levels of foliar spray (control vs. two FeEDTA sprays)”
e1“significantly increased the yield of all three cultivars at another site”
Claim · model-written summary
Yield responses to foliar sprays were about 300 kg ha −1 where they occurred.
- Taxon
- soybeanGlycine maxe0
- Treatment
- foliar sprayse1
- Outcome
- yield responsese1
- Direction
- increaseinferrede1
- Value
- about 300 kg ha −1e1
- Qualifier
- when obtainede1
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e3“two levels of foliar spray (control vs. two FeEDTA sprays)”
e1“The yield responses to foliar sprays, when obtained, were about 300 kg ha −1”
Claim · model-written summary
FeEDDHA seed treatment did not increase seed yield compared with the control.
- Taxon
- soybeanGlycine maxe0
- Treatment
- FeEDDHA seed treatmente1
- Outcome
- seed yielde1
- Direction
- did not increasee1
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e1“FeEDDHA seed treatment did not increase seed yield”
e2“two levels of seed treatment (control vs. FeEDDHA seed treatment)”
Claim · model-written summary
Cultivar selection is the most practical control measure for iron-deficiency chlorosis of soybean grown in narrow rows.
- Taxon
- soybeanGlycine maxe0
- Outcome
- Cultivar selection remains the most practical control measuree1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean [ Glycine max (L.) Merr.] is grown on calcareous soils”
e1“Cultivar selection remains the most practical control measure”
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