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 2018, N applied alone increased yields 44 bu/a, whereas N and P applied together increased yields up to 67 bu/a. Averaged across the past 10 years, N and P fertilization increased sorghum yields up to 75 bu/a. Application of 80 lb/a N (with P) produced the maximum yield in 2018, which is slightly less than the 10-year 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 31% for N, 65% for P, and 38% for K.
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Claims 12
Claim · model-written summary
Long-term research indicates that N and P fertilizer must be applied to optimize irrigated grain sorghum production in western Kansas.
- Taxon
- Grain Sorghum
Sorghum bicolort0 - 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
t0“Grain Sorghum”
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”
Claim · model-written summary
In 2018, N applied alone increased sorghum yield by 44 bu/a.
- Taxon
- Grain SorghumSorghum bicolort0
- Treatment
- N applied alonee1
- Outcome
- yieldse1
- Direction
- increasede1
- Value
- 44 bu/ae1
- Qualifier
- In 2018e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum”
e1“In 2018, N applied alone increased yields 44 bu/a”
Claim · model-written summary
N and P applied together increased sorghum yield by up to 67 bu/a in 2018.
- Taxon
- Grain SorghumSorghum bicolort0
- Treatment
- N and P applied togethere1
- Outcome
- yieldse1
- Direction
- increasede1
- Value
- up to 67 bu/ae1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum”
e1“whereas N and P applied together increased yields up to 67 bu/a”
Claim · model-written summary
Averaged across the past 10 years, N and P fertilization increased sorghum yield by up to 75 bu/a.
- Taxon
- Grain SorghumSorghum bicolort0
- Treatment
- N and P fertilizatione2
- Outcome
- sorghum yieldse2
- Direction
- increasede2
- Value
- up to 75 bu/ae2
- Qualifier
- Averaged across the past 10 yearse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum”
e2“Averaged across the past 10 years, N and P fertilization increased sorghum yields up to 75 bu/a”
Claim · model-written summary
Application of 80 lb/a N (with P) gave the maximum yield in 2018, slightly less than the 10-year average.
- Taxon
- Grain SorghumSorghum bicolort0
- Treatment
- Application of 80 lb/a N (with P)e3
- Outcome
- yielde3
- Direction
- maximume3
- Qualifier
- slightly less than the 10-year averagee3
- Comparator
- 10-year averagee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum”
e3“Application of 80 lb/a N (with P) produced the maximum yield in 2018, which is slightly less than the 10-year average”
Claim · model-written summary
Application of potassium had no effect on sorghum yield over the study period.
- Taxon
- Grain SorghumSorghum bicolort0
- Treatment
- Application of potassium (K)e4
- Outcome
- sorghum yielde4
- Direction
- no effecte4
- Qualifier
- throughout the study periode4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum”
e4“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 ~0.7 lb/bu in irrigated grain sorghum.
- Taxon
- Grain SorghumSorghum bicolort0
- Outcome
- grain N contente5
- Direction
- maximume5
- Value
- ~0.7 lb/bue5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum”
e5“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 (0.34 lb P2O5/bu) in irrigated grain sorghum.
- Taxon
- Grain SorghumSorghum bicolort0
- Outcome
- grain P contente5
- Direction
- maximume5
- Value
- 0.15 lb/bu (0.34 lb P2O5/bu)e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum”
e5“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 (0.23 lb K2O/bu) in irrigated grain sorghum.
- Taxon
- Grain SorghumSorghum bicolort0
- Outcome
- grain K contente5
- Direction
- maximume5
- Value
- 0.19 lb/bu (0.23 lb K2O/bu)e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum”
e5“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 31% for N.
- Taxon
- Grain SorghumSorghum bicolort0
- Treatment
- highest N, P, and K ratee6
- Compound
- Ne6
- Outcome
- apparent fertilizer recovery in the graine6
- Value
- 31%e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum”
e6“At the highest N, P, and K rate, apparent fertilizer recovery in the grain was 31% for N, 65% for P, and 38% for K”
Claim · model-written summary
At the highest N, P and K rate, apparent fertilizer recovery in the grain was 65% for P.
- Taxon
- Grain SorghumSorghum bicolort0
- Treatment
- highest N, P, and K ratee6
- Compound
- Pe6
- Outcome
- apparent fertilizer recovery in the graine6
- Value
- 65%e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum”
e6“At the highest N, P, and K rate, apparent fertilizer recovery in the grain was 31% for N, 65% for P, and 38% for K”
Claim · model-written summary
At the highest N, P and K rate, apparent fertilizer recovery in the grain was 38% for K.
- Taxon
- Grain SorghumSorghum bicolort0
- Treatment
- highest N, P, and K ratee6
- Compound
- Ke6
- Outcome
- apparent fertilizer recovery in the graine6
- Value
- 38%e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grain Sorghum”
e6“At the highest N, P, and K rate, apparent fertilizer recovery in the grain was 31% for N, 65% for P, and 38% for K”
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