Abstract
The recent incidence and severity of sulfur (S) deficiency due to a decrease in atmospheric S deposition and greater S removal by crops requires reevaluating current S recommendation for corn ( Zea mays L.). Ten on‐farm field trials were conducted to evaluate corn response to S additions at sites in the Red River Valley of North Dakota and Minnesota between 2016 and 2017. Sulfur rates of 0, 11, 22, 33, 44 kg S ha –1 as granular (NH 4 ) 2 SO 4 were broadcasted and incorporated prior to corn planting using randomized complete block design with four replications. Plant tissue S concentration and N/S ratios were determined at two corn growth stages (V6 and V12 in 2016, V12 and R1 in 2017) and grain yield was measured at harvest. Plant tissue S did not increase with S fertilizer at V6 and V12 stages in 2016 whereas in 2017, tissue S increased with 11 kg S ha –1 at two sites in the V6 growth stage. Yield was not related to both soil S and plant parameters. Corn yield increased with 11 kg S ha –1 fertilizer rate at two of ten locations. Lack of response at the remaining sites suggests that S from organic matter and mineralization was enough for crop growth and hence applied fertilizer S had no effect on yield. Core Ideas Corn grain yield increased with S fertilizer at two of ten sites. No response to S fertilizer occurred due to dry early growing season. Plant tissue tests were not reliable indicators in predicting response.
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Claims 5
Claim · model-written summary
Plant tissue S did not increase with S fertilizer at V6 and V12 stages in 2016.
- Taxon
- corn
Zea mays subsp. mayse1 - Organ / stage
- V6 and V12 stagese2
- Treatment
- S fertilizere2
- Outcome
- Plant tissue Se2
- Direction
- did not increasee2
- Qualifier
- in 2016e2
- Setting
- Red River Valley of North Dakota and Minnesotae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at sites in the Red River Valley of North Dakota and Minnesota between 2016 and 2017”
e1“reevaluating current S recommendation for corn ( Zea mays L.)”
e2“Plant tissue S did not increase with S fertilizer at V6 and V12 stages in 2016”
Claim · model-written summary
Tissue S increased with 11 kg S ha –1 at two sites at the V6 stage in 2017.
- Taxon
- cornZea mays subsp. mayse1
- Organ / stage
- V6 growth stagee3
- Treatment
- 11 kg S ha –1e3
- Outcome
- tissue Se3
- Direction
- increasede3
- Qualifier
- at two sitese3
- Setting
- Red River Valley of North Dakota and Minnesotae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at sites in the Red River Valley of North Dakota and Minnesota between 2016 and 2017”
e1“reevaluating current S recommendation for corn ( Zea mays L.)”
e3“in 2017, tissue S increased with 11 kg S ha –1 at two sites in the V6 growth stage”
Claim · model-written summary
Corn yield increased with 11 kg S ha –1 fertilizer rate at two of ten locations.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- 11 kg S ha –1 fertilizer ratee4
- Outcome
- Corn yielde4
- Direction
- increasede4
- Qualifier
- at two of ten locationse4
- Setting
- Red River Valley of North Dakota and Minnesotae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at sites in the Red River Valley of North Dakota and Minnesota between 2016 and 2017”
e1“reevaluating current S recommendation for corn ( Zea mays L.)”
e4“Corn yield increased with 11 kg S ha –1 fertilizer rate at two of ten locations”
Claim · model-written summary
Yield was not related to soil S or to plant parameters.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- soil Se5
- Outcome
- Yielde5
- Setting
- Red River Valley of North Dakota and Minnesotae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at sites in the Red River Valley of North Dakota and Minnesota between 2016 and 2017”
e1“reevaluating current S recommendation for corn ( Zea mays L.)”
e5“Yield was not related to both soil S and plant parameters”
Claim · model-written summary
Applied fertilizer S had no effect on yield at the remaining sites.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- applied fertilizer Se6
- Outcome
- yielde6
- Direction
- no_changeinferrede6
- Qualifier
- at the remaining sitese7
- Setting
- Red River Valley of North Dakota and Minnesotae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at sites in the Red River Valley of North Dakota and Minnesota between 2016 and 2017”
e1“reevaluating current S recommendation for corn ( Zea mays L.)”
e6“applied fertilizer S had no effect on yield”
e7“Lack of response at the remaining sites”
The same questions in other papers
fertilization · yield · Zea mays (maize)Positive and negative results
3,484 papers in the same direction as this paper · 338 in the opposite direction · 85 reporting no difference from an alternative
- no effect
- positive
- positive
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See all 3,908 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.