Abstract
Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas. In 2016, N applied alone increased yields 71 bu/a, whereas N and P applied together increased yields up to 93 bu/a. Averaged across the past 10 years, N and P fertilization increased sorghum yields up to 77 bu/a. Application of 80 lb/a N (with P) was sufficient to produce 89% of maximum yield in 2016 which is slightly less than the 10-yr average. Application of potassium (K) has had no effect on sorghum yield throughout the study period. Average grain N content reached a maximum of ~0.7 lb/bu while grain P content reached a maximum of 0.15 lb/bu (0.34 lb P2O5/bu) and grain K content reached a maximum of 0.19 lb/bu (0.23 lb K2O/bu). At the highest N, P, and K rate, apparent fertilizer recovery in the grain was 33% for N, 69% for P, and 40% for K.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
N applied alone increased sorghum yields by 71 bu/a in 2016.
- Taxon
- grain sorghum
Sorghum bicolore0 - Treatment
- N applied alonee1
- Outcome
- yieldse1
- Direction
- increasede1
- Value
- 71 bu/ae1
- Qualifier
- In 2016e1
- Setting
- western Kansase0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas”
e1“In 2016, N applied alone increased yields 71 bu/a, whereas N and P applied together increased yields up to 93 bu/a”
Claim · model-written summary
N and P applied together increased sorghum yields by up to 93 bu/a in 2016.
- Taxon
- grain sorghumSorghum bicolore0
- Treatment
- N and P applied togethere1
- Outcome
- yieldse1
- Direction
- increasede1
- Value
- 93 bu/ae1
- Qualifier
- In 2016e1
- Setting
- western Kansase0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas”
e1“In 2016, N applied alone increased yields 71 bu/a, whereas N and P applied together increased yields up to 93 bu/a”
Claim · model-written summary
Averaged over 10 years, N and P fertilization increased sorghum yields by up to 77 bu/a.
- Taxon
- grain sorghumSorghum bicolore0
- Treatment
- N and P fertilizatione1
- Outcome
- sorghum yieldse1
- Direction
- increasede1
- Value
- 77 bu/ae1
- Qualifier
- Averaged across the past 10 yearse1
- Setting
- western Kansase0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas”
e1“Averaged across the past 10 years, N and P fertilization increased sorghum yields up to 77 bu/a”
Claim · model-written summary
Applying 80 lb/a N with P gave 89% of maximum yield in 2016, slightly less than the 10-year average.
- Taxon
- grain sorghumSorghum bicolore0
- Treatment
- Application of 80 lb/a N (with P)e1
- Outcome
- yielde1
- Value
- 89%e1
- Qualifier
- slightly less than the 10-yr averagee1
- Comparator
- maximum yielde1
- Setting
- western Kansase0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas”
e1“Application of 80 lb/a N (with P) was sufficient to produce 89% of maximum yield in 2016 which is slightly less than the 10-yr average”
Claim · model-written summary
Potassium application had no effect on sorghum yield over the study period.
- Treatment
- Application of potassium (K)e1
- Outcome
- sorghum yielde1
- Direction
- no effecte1
- Setting
- western Kansase0
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas”
e1“Application of potassium (K) has had no effect on sorghum yield throughout the study period”
Claim · model-written summary
Average grain N content reached a maximum of about 0.7 lb/bu.
- Taxon
- grain sorghumSorghum bicolore0
- Outcome
- grain N contente1
- Value
- ~0.7 lb/bue1
- Setting
- western Kansase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas”
e1“Average grain N content reached a maximum of ~0.7 lb/bu”
Claim · model-written summary
Grain P content reached a maximum of 0.15 lb/bu.
- Taxon
- grain sorghumSorghum bicolore0
- Outcome
- grain P contente1
- Value
- 0.15 lb/bue1
- Setting
- western Kansase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas”
e1“grain P content reached a maximum of 0.15 lb/bu (0.34 lb P2O5/bu)”
Claim · model-written summary
Grain K content reached a maximum of 0.19 lb/bu.
- Taxon
- grain sorghumSorghum bicolore0
- Outcome
- grain K contente1
- Value
- 0.19 lb/bue1
- Setting
- western Kansase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas”
e1“grain K content reached a maximum of 0.19 lb/bu (0.23 lb K2O/bu)”
Claim · model-written summary
At the highest N, P and K rate, apparent fertilizer recovery in the grain was 33% for N.
- Taxon
- grain sorghumSorghum bicolore0
- Treatment
- highest N, P, and K ratee1
- Outcome
- apparent fertilizer recovery in the graine1
- Value
- 33%e1
- Qualifier
- for Ne1
- Setting
- western Kansase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas”
e1“At the highest N, P, and K rate, apparent fertilizer recovery in the grain was 33% for N, 69% for P, and 40% for K”
Claim · model-written summary
At the highest N, P and K rate, apparent fertilizer recovery in the grain was 69% for P.
- Taxon
- grain sorghumSorghum bicolore0
- Treatment
- highest N, P, and K ratee1
- Outcome
- apparent fertilizer recovery in the graine1
- Value
- 69%e1
- Qualifier
- for Pe1
- Setting
- western Kansase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas”
e1“At the highest N, P, and K rate, apparent fertilizer recovery in the grain was 33% for N, 69% for P, and 40% for K”
Claim · model-written summary
At the highest N, P and K rate, apparent fertilizer recovery in the grain was 40% for K.
- Taxon
- grain sorghumSorghum bicolore0
- Treatment
- highest N, P, and K ratee1
- Outcome
- apparent fertilizer recovery in the graine1
- Value
- 40%e1
- Qualifier
- for Ke1
- Setting
- western Kansase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas”
e1“At the highest N, P, and K rate, apparent fertilizer recovery in the grain was 33% for N, 69% for P, and 40% for K”
Claim · model-written summary
N and P fertilizer must be applied to optimize irrigated grain sorghum production in western Kansas.
- Taxon
- grain sorghumSorghum bicolore0
- Treatment
- phosphorus (P) and nitrogen (N) fertilizere0
- Outcome
- optimize productione0
- Setting
- western Kansase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term research shows that phosphorus (P) and nitrogen (N) fertilizer must be applied to optimize production of irrigated grain sorghum in western Kansas”
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See all 100 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.