Abstract
Abstract Field experiments were conducted in central Alberta to determine the yield response of barley and rapeseed to KCl on soils varying in soil test K levels and to evaluate three methods of K placement for effectiveness. The soil test K extractant was 1M ammonium acetate solution. Placement methods were incorporation, banding with the seed and banding beside the seed row. The percentage of sites that responded to K fertilizer significantly and yield increase of barley from K fertilizer decreased with increasing soil test K in the soil. Rapeseed responded less often to K than barley and K placement was more critical for barley than for rapeseed. Barley yields were greatest when the K fertilizer was banded in the seed row and least when incorporated into the soil. Rapeseed yields on K‐responsive sites were same when the K fertilizer was incorporated or banded beside the seed row, but tended to be greater when banded with the seed.
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Claims 8
Claim · model-written summary
Barley K fertilizer response frequency fell as soil test K increased.
- Taxon
- barley
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Hordeum vulgaree0 - Compound
- soil test Ke0
- Outcome
- percentage of sites that responded to K fertilizer significantlye0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The percentage of sites that responded to K fertilizer significantly and yield increase of barley from K fertilizer decreased with increasing soil test K in the soil”
Claim · model-written summary
Barley yield gain from K fertilizer fell as soil test K increased.
- Taxon
- barleyHordeum vulgaree0
- Compound
- soil test Ke0
- Outcome
- yield increase of barley from K fertilizere0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage of sites that responded to K fertilizer significantly and yield increase of barley from K fertilizer decreased with increasing soil test K in the soil”
Claim · model-written summary
Rapeseed responded to K less often than barley.
Verbatim
e0“Rapeseed responded less often to K than barley”
Claim · model-written summary
K placement mattered more for barley than rapeseed.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- K placemente0
- Direction
- more criticale0
- Comparator
- rapeseede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K placement was more critical for barley than for rapeseed”
Claim · model-written summary
Barley yield was highest with K banded in the seed row.
- Taxon
- BarleyHordeum vulgaree0
- Treatment
- K fertilizer was banded in the seed rowe0
- Outcome
- Barley yieldse0
- Direction
- greateste0
- Comparator
- incorporated into the soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Barley yields were greatest when the K fertilizer was banded in the seed row and least when incorporated into the soil”
Claim · model-written summary
Barley yield was lowest with K incorporated in soil.
- Taxon
- BarleyHordeum vulgaree0
- Treatment
- incorporated into the soile0
- Outcome
- Barley yieldse0
- Direction
- leaste0
- Comparator
- banded in the seed rowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Barley yields were greatest when the K fertilizer was banded in the seed row and least when incorporated into the soil”
Claim · model-written summary
At K responsive sites rapeseed yield was the same with incorporation or banding beside the row.
Verbatim
e0“Rapeseed yields on K‐responsive sites were same when the K fertilizer was incorporated or banded beside the seed row”
Claim · model-written summary
Rapeseed yield tended to be greater with K banded with the seed.
Verbatim
e0“Rapeseed yields on K‐responsive sites were same when the K fertilizer was incorporated or banded beside the seed row, but tended to be greater when banded with the seed”
The same questions in other papers
fertilization · yield · Hordeum vulgare (barley)Positive and negative results
472 papers in the same direction as this paper · 66 in the opposite direction · 11 reporting no difference from an alternative
- positive
- positive
- positive
546 papers more in this group
See all 550 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.