Abstract
Significant sulfur (S) deficiency in Iowa crops was first documented about 15 years ago. First identified in alfalfa and then corn and soybean. Since then about 150 trials with corn (along with trials with alfalfa and soybean) have been conducted across the state, with approximately 50% of trials having a statistically significant yield increase. A main reason for the yield response to S in recent years, as compared to many years prior, has been reduction in atmospheric deposition as a result of the Clean Air Act. Other factors for increased S responses include fields with no manure applications, increased crop yields, refinement of phosphate fertilizers, and decreases in soil organic matter levels.
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Claims 3
Claim · model-written summary
Sulfur deficiency was documented in Iowa crops about 15 years earlier.
Verbatim
e0“Significant sulfur (S) deficiency in Iowa crops was first documented about 15 years ago”
Claim · model-written summary
Approximately half of corn sulfur trials showed a significant yield increase.
- Taxon
- corn
Zea mays subsp. mayse0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“about 150 trials with corn (along with trials with alfalfa and soybean) have been conducted across the state, with approximately 50% of trials having a statistically significant yield increase”
e1“yield response to S”
Claim · model-written summary
Reduced atmospheric sulfur deposition is presented as a main reason for increased crop response.
Verbatim
e0“A main reason for the yield response to S in recent years, as compared to many years prior, has been reduction in atmospheric deposition as a result of the Clean Air Act”
e1“Significant sulfur (S) deficiency in Iowa crops was first documented about 15 years ago”
The same questions in other papers
sulfur atom · yield · Zea mays (maize)Results differ
68 papers in the same direction as this paper · 12 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- no effect
78 papers more in this group
See all 82 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.