Abstract
The effects of N, P, K, and manure factorially applied to potato (Solanum tuberosum L.) yields, starch content, and soil and tissue nutrient levels were evaluated on continuous plots over 12 yr in a 4-yr potato, grain, hay, hay rotation. Although yield responses were observed with N, P, and K applications, manure application substantially increased yields above yield levels due to applied N, P, and K. Increasing rates of KCl strongly depressed tuber starch contents. Soil test P and K levels increased with repeated fertility applications, and leaf tissue levels were increased with N, P, and K treatments.
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Claims 5
Claim · model-written summary
N, P and K applications produced potato yield responses.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- N, P, and K applicationse1
- Outcome
- yielde1
- Direction
- increaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applied to potato (Solanum tuberosum L.) yields”
e1“Although yield responses were observed with N, P, and K applications”
Claim · model-written summary
Manure application substantially increased potato yields above yield levels due to applied N, P and K.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- manure applicatione2
- Outcome
- yieldse2
- Direction
- increasede2
- Qualifier
- substantiallye2
- Comparator
- yield levels due to applied N, P, and Ke2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applied to potato (Solanum tuberosum L.) yields”
e2“manure application substantially increased yields above yield levels due to applied N, P, and K”
Claim · model-written summary
Increasing rates of KCl strongly depressed potato tuber starch content.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Increasing rates of KCle3
- Outcome
- tuber starch contentse3
- Direction
- depressede3
- Qualifier
- stronglye3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applied to potato (Solanum tuberosum L.) yields”
e3“Increasing rates of KCl strongly depressed tuber starch contents”
Claim · model-written summary
Repeated fertility applications increased soil test P and K levels in the potato experiment.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- repeated fertility applicationse4
- Outcome
- Soil test P and K levelse4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applied to potato (Solanum tuberosum L.) yields”
e4“Soil test P and K levels increased with repeated fertility applications”
Claim · model-written summary
N, P and K treatments increased potato leaf tissue nutrient levels.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- N, P, and K treatmentse5
- Outcome
- leaf tissue levelse5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applied to potato (Solanum tuberosum L.) yields”
e5“leaf tissue levels were increased with N, P, and K treatments”
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