Abstract
Strip‐till can improve soybean [Glycine max (L.) Merr.] yield and increase P and K availability relative to no‐till. Our objectives were to evaluate the effect of P and K rate and placement in no‐till and strip‐till on soybean‐seed oil and protein content, aboveground growth and P and K accumulation, and soil water. A 3‐yr field experiment was conducted near Urbana, IL, with tillage/fertilizer placement treatment as the main plots: no‐till/broadcast (NTBC), no‐till/deep band (NTDB), and strip‐till/deep band (STDB) with banded fertilizer at 15 cm beneath the planted row. Phosphorus (0, 12, 24, and 36 kg ha–1 yr–1) was the subplot and K (0, 42, 84, and 168 kg ha–1 yr–1) was the sub‐subplot. Higher protein and oil yields were produced with STDB than the no‐till treatments. Increase protein yield with P fertilization occurred only for the no‐till treatments, but STDB maintained higher protein yield than the no‐till treatments when no P was applied, indicating that STDB was more effective at making P available to the crop. Phosphorus and K placement made no difference in protein and oil concentration or yield. Leaf area index (LAI) was greater for STDB than NTBC and NTDB and greater for NTDB than NTBC. Phosphorus and K fertilization increased LAI relative to the check by V2 stage illustrating the importance of fertilization for early growth. The advantage for soybean production with STDB over the no‐till treatments was the result of greater soil water content in STDB during the reproductive stages.
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Claims 8
Claim · model-written summary
Strip till with deep banding produced higher soybean protein and oil yields than no till.
- Taxon
- soybean
Glycine maxt0 - Treatment
- STDBe0
- Outcome
- protein and oil yieldse0
- Direction
- Highere0
- Comparator
- no‐till treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher protein and oil yields were produced with STDB than the no‐till treatments.”
t0“Soybean”
Claim · model-written summary
Phosphorus fertilization increased soybean protein yield only under no till.
- Taxon
- soybeanGlycine maxt0
- Treatment
- P fertilizatione0
- Outcome
- protein yielde0
- Direction
- Increasee0
- Qualifier
- only for the no‐till treatmentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase protein yield with P fertilization occurred only for the no‐till treatments”
t0“Soybean”
Claim · model-written summary
Without phosphorus, STDB maintained higher soybean protein yield than no till.
- Taxon
- soybeanGlycine maxt0
- Treatment
- STDBe0
- Outcome
- protein yielde0
- Direction
- highere0
- Qualifier
- when no P was appliede0
- Comparator
- no‐till treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“STDB maintained higher protein yield than the no‐till treatments when no P was applied”
t0“Soybean”
Claim · model-written summary
Phosphorus and potassium placement made no difference in soybean protein or oil concentration or yield.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Phosphorus and K placemente0
- Outcome
- protein and oil concentration or yielde0
- Direction
- made no differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus and K placement made no difference in protein and oil concentration or yield.”
t0“Soybean”
Claim · model-written summary
STDB produced greater soybean leaf area index than NTBC and NTDB.
- Taxon
- soybeanGlycine maxt0
- Treatment
- STDBe0
- Outcome
- Leaf area index (LAI)e0
- Direction
- greatere0
- Comparator
- NTBC and NTDBe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf area index (LAI) was greater for STDB than NTBC and NTDB”
t0“Soybean”
Claim · model-written summary
NTDB produced greater soybean leaf area index than NTBC.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf area index (LAI) was greater for STDB than NTBC and NTDB and greater for NTDB than NTBC.”
t0“Soybean”
Claim · model-written summary
Phosphorus and potassium fertilization increased soybean leaf area index by V2 stage relative to the check.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- V2 stagee0
- Treatment
- Phosphorus and K fertilizatione0
- Outcome
- LAIe0
- Direction
- increasede0
- Comparator
- the checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus and K fertilization increased LAI relative to the check by V2 stage”
t0“Soybean”
Claim · model-written summary
STDB had greater soil water content than no till during soybean reproductive stages.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- reproductive stagese0
- Treatment
- STDBe0
- Outcome
- soil water contente0
- Direction
- greatere0
- Comparator
- no‐till treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The advantage for soybean production with STDB over the no‐till treatments was the result of greater soil water content in STDB during the reproductive stages.”
t0“Soybean”
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