Abstract
Core Ideas Application of B, Cl, and Zn increase soybean tissue concentration of each respective nutrient. Addition of B, Cl, Mn, and Zn do not increase soybean grain yield and have a marginal impact on soybean grain quality. Soil tests for B, Cl, and Zn do not predict soybean grain yield response and no relationships exist between trifoliate B, Cl, Mn, and Zn concentration to grain yield or their respective soil tests. It is unlikely that micronutrients are needed to increase soybean grain yield. Efficient use of micronutrients can potentially increase soybean [ Glycine max (L.) Merr.] grain yield and economic return. The objectives of this study were to determine the effect of broadcast application of micronutrients on soybean tissue nutrient concentration and grain yield and the relationships between soil and plant tissue tests. Three separate research trials were conducted at 35 sites from 2011 to 2014. Soybean response to Zn application was evaluated in Study 1; B, Mn, and Zn in Study 2; and B, Cl, Mn, and Zn in Study 3. Fertilizers were broadcast applied to the soil surface and incorporated prior to planting. Application of B, Cl, and Zn increased soybean trifoliate concentration of each respective nutrient but application of Mn did not. Addition of B, Cl, Mn, and Zn did not increase soybean grain yield and had a marginal impact on soybean grain quality. Application of 2.2 kg B ha −1 sometimes reduced soybean grain yield. Soil tests for B, Cl, and Zn did not predict soybean grain yield response and there were no relationships between trifoliate B, Cl, Mn, and Zn concentration to grain yield or their respective soil tests. Increased soybean grain yield did increase the removal of micronutrients, but it is unlikely that micronutrients are needed to increase soybean grain yield. Results from these studies conducted across Minnesota showed that broadcast application of B, Cl, Mn, and Zn do not increase soybean yield except for low Mn (<20 mg kg −1 ) where Mn application could increase soybean yield.
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Claims 11
Claim · model-written summary
B application increased soybean trifoliate B concentration.
- Taxon
- soybean
Glycine maxe0 - Treatment
- Be0
- Outcome
- soybean trifoliate concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of B, Cl, and Zn increased soybean trifoliate concentration of each respective nutrient”
Claim · model-written summary
Cl application increased soybean trifoliate Cl concentration.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Cle0
- Outcome
- soybean trifoliate concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of B, Cl, and Zn increased soybean trifoliate concentration of each respective nutrient”
Claim · model-written summary
Zn application increased soybean trifoliate Zn concentration.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Zne0
- Outcome
- soybean trifoliate concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of B, Cl, and Zn increased soybean trifoliate concentration of each respective nutrient”
Claim · model-written summary
Mn application did not increase soybean trifoliate Mn concentration.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Mne0
- Outcome
- soybean trifoliate concentratione0
- Direction
- did note0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of B, Cl, and Zn increased soybean trifoliate concentration of each respective nutrient but application of Mn did not”
Claim · model-written summary
Addition of the four micronutrients did not increase soybean grain yield.
- Taxon
- soybeanGlycine maxe0
- Treatment
- B, Cl, Mn, and Zne0
- Outcome
- soybean grain yielde0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of B, Cl, Mn, and Zn did not increase soybean grain yield”
Claim · model-written summary
Addition of the four micronutrients had a marginal impact on soybean grain quality.
- Taxon
- soybeanGlycine maxe0
- Treatment
- B, Cl, Mn, and Zne0
- Outcome
- soybean grain qualitye0
- Qualifier
- marginal impacte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of B, Cl, Mn, and Zn did not increase soybean grain yield and had a marginal impact on soybean grain quality”
Claim · model-written summary
A 2.2 kg B ha −1 application sometimes reduced soybean grain yield.
- Taxon
- soybeanGlycine maxe0
- Treatment
- 2.2 kg B ha −1e0
- Outcome
- soybean grain yielde0
- Direction
- reducede0
- Qualifier
- sometimese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 2.2 kg B ha −1 sometimes reduced soybean grain yield”
Claim · model-written summary
Soil tests for B, Cl and Zn did not predict soybean grain yield response.
- Taxon
- soybeanGlycine maxe0
- Outcome
- soybean grain yield responsee0
- Direction
- did not predicte0
- Comparator
- Soil tests for B, Cl, and Zne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil tests for B, Cl, and Zn did not predict soybean grain yield response”
Claim · model-written summary
Trifoliate micronutrient concentrations were unrelated to soybean grain yield or their soil tests.
- Taxon
- soybeanGlycine maxe1
- Organ / stage
- trifoliatee0
- Outcome
- grain yielde0
- Direction
- no relationshipse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were no relationships between trifoliate B, Cl, Mn, and Zn concentration to grain yield or their respective soil tests”
e1“Addition of B, Cl, Mn, and Zn did not increase soybean grain yield”
Claim · model-written summary
Increased soybean grain yield increased micronutrient removal.
- Taxon
- soybeanGlycine maxe0
- Outcome
- removal of micronutrientse0
- Direction
- increasee0
- Comparator
- soybean grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased soybean grain yield did increase the removal of micronutrients”
Claim · model-written summary
Mn application could increase soybean yield where Mn was low.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Mn applicatione0
- Outcome
- soybean yielde0
- Direction
- increasee0
- Qualifier
- low Mn (<20 mg kg −1 )e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low Mn (<20 mg kg −1 ) where Mn application could increase soybean yield”
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