Abstract
Abstract Potato plants were grown 3 different years in noncompacted, moderately compacted, and severely compacted soils. Changes in yield and quality of tubers were measured against different levels of N and P and against soil moisture tension. Total and U. S. No. 1 tuber yields were affected adversely by compacted soil. Tuber deformity was confined to angular development conforming to the shape of adjacent clods. Second growth and growth cracks in tubers were of no consequence. No consistent change in specific gravity was found. Neither yield nor quality of the tubers was enhanced by use of N higher than 180 pounds per acre. Addition of P had no appreciable effect. Soil P reserves were high. Tuber yield and quality in all soils were best when the soil moisture tension was near 0.5 atm. At a lower tension (0.2 atm) enlarged lenticels were more prevalent, and at a higher tension (0.7 atm) the yield and percent of U. S. No. 1 tubers diminished in severely compacted soil. Without proper control of the soil moisture regime in compacted soils, loss in tuber yield and quality could be accentuated. Neither changes in fertilizer nor irrigation practices alleviated the adverse effects of soil compaction on potato yield or quality.
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Claims 17
Claim · model-written summary
Compacted soil adversely affected total tuber yield.
- Taxon
- Potato plants
Solanum tuberosumt0 - Treatment
- compacted soile0
- Outcome
- Totale0
- Direction
- affected adverselye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Total and U. S. No. 1 tuber yields were affected adversely by compacted soil.”
t0“Potato Plants”
Claim · model-written summary
Compacted soil adversely affected U. S. No. 1 tuber yield.
- Taxon
- Potato plants
Solanum tuberosumt0 - Treatment
- compacted soile0
- Outcome
- U. S. No. 1 tuber yieldse0
- Direction
- affected adverselye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Total and U. S. No. 1 tuber yields were affected adversely by compacted soil.”
t0“Potato Plants”
Claim · model-written summary
Tuber deformity was angular and conformed to neighboring clods.
- Taxon
- Potato plants
Solanum tuberosumt0 - Outcome
- Tuber deformitye0
- Qualifier
- angular development conforming to the shape of adjacent clodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Tuber deformity was confined to angular development conforming to the shape of adjacent clods.”
t0“Potato Plants”
Claim · model-written summary
Second growth and growth cracks were inconsequential.
- Taxon
- Potato plants
Solanum tuberosumt0 - Outcome
- Second growth and growth cracks in tuberse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Second growth and growth cracks in tubers were of no consequence.”
t0“Potato Plants”
Claim · model-written summary
Specific gravity showed no consistent change.
- Taxon
- Potato plants
Solanum tuberosumt0 - Outcome
- specific gravitye0
- Direction
- No consistent changee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“No consistent change in specific gravity was found.”
t0“Potato Plants”
Claim · model-written summary
Nitrogen above 180 pounds per acre did not enhance tuber yield.
- Taxon
- Potato plants
Solanum tuberosumt0 - Treatment
- N higher than 180 pounds per acree0
- Outcome
- yielde0
- Direction
- Neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Neither yield nor quality of the tubers was enhanced by use of N higher than 180 pounds per acre.”
t0“Potato Plants”
Claim · model-written summary
Nitrogen above 180 pounds per acre did not enhance tuber quality.
- Taxon
- Potato plants
Solanum tuberosumt0 - Treatment
- N higher than 180 pounds per acree0
- Outcome
- quality of the tuberse0
- Direction
- Neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Neither yield nor quality of the tubers was enhanced by use of N higher than 180 pounds per acre.”
t0“Potato Plants”
Claim · model-written summary
Phosphorus addition had no appreciable effect.
- Taxon
- Potato plants
Solanum tuberosumt0 - Treatment
- Addition of Pe0
- Outcome
- no appreciable effecte0
- Direction
- no appreciable effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Addition of P had no appreciable effect.”
t0“Potato Plants”
Claim · model-written summary
Soil phosphorus reserves were high.
- Taxon
- Potato plants
Solanum tuberosumt0 - Outcome
- Soil P reservese0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Soil P reserves were high.”
t0“Potato Plants”
Claim · model-written summary
Tuber yield was best near 0.5 atm soil moisture tension.
- Taxon
- Potato plants
Solanum tuberosumt0 - Outcome
- Tuber yielde0
- Direction
- beste0
- Value
- 0.5 atme0
- Qualifier
- in all soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Tuber yield and quality in all soils were best when the soil moisture tension was near 0.5 atm.”
t0“Potato Plants”
Claim · model-written summary
Tuber quality was best near 0.5 atm soil moisture tension.
- Taxon
- Potato plants
Solanum tuberosumt0 - Outcome
- qualitye0
- Direction
- beste0
- Value
- 0.5 atme0
- Qualifier
- in all soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Tuber yield and quality in all soils were best when the soil moisture tension was near 0.5 atm.”
t0“Potato Plants”
Claim · model-written summary
Enlarged lenticels were more prevalent at 0.2 atm.
- Taxon
- Potato plants
Solanum tuberosumt0 - Outcome
- enlarged lenticelse0
- Direction
- more prevalente0
- Value
- 0.2 atme0
- Setting
- lower tensione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“At a lower tension (0.2 atm) enlarged lenticels were more prevalent”
t0“Potato Plants”
Claim · model-written summary
At 0.7 atm, tuber yield diminished in severely compacted soil.
- Taxon
- Potato plants
Solanum tuberosumt0 - Outcome
- yielde0
- Direction
- diminishede0
- Value
- 0.7 atme0
- Setting
- severely compacted soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“at a higher tension (0.7 atm) the yield and percent of U. S. No. 1 tubers diminished in severely compacted soil.”
t0“Potato Plants”
Claim · model-written summary
At 0.7 atm, the percentage of U. S. No. 1 tubers diminished in severely compacted soil.
- Taxon
- Potato plants
Solanum tuberosumt0 - Outcome
- percent of U. S. No. 1 tuberse0
- Direction
- diminishede0
- Value
- 0.7 atme0
- Setting
- severely compacted soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“at a higher tension (0.7 atm) the yield and percent of U. S. No. 1 tubers diminished in severely compacted soil.”
t0“Potato Plants”
Claim · model-written summary
Without moisture control, compaction-related tuber yield and quality losses could worsen.
- Taxon
- Potato plants
Solanum tuberosumt0 - Outcome
- loss in tuber yield and qualitye0
- Qualifier
- Without proper control of the soil moisture regime in compacted soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Without proper control of the soil moisture regime in compacted soils, loss in tuber yield and quality could be accentuated.”
t0“Potato Plants”
Claim · model-written summary
Changes in fertilizer did not alleviate compaction damage to potato yield or quality.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- changes in fertilizere0
- Outcome
- adverse effects of soil compaction on potato yield or qualitye0
- Direction
- Neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Neither changes in fertilizer nor irrigation practices alleviated the adverse effects of soil compaction on potato yield or quality.”
Claim · model-written summary
Changes in irrigation did not alleviate compaction damage to potato yield or quality.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- irrigation practicese0
- Outcome
- adverse effects of soil compaction on potato yield or qualitye0
- Direction
- Neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Neither changes in fertilizer nor irrigation practices alleviated the adverse effects of soil compaction on potato yield or quality.”
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See all 41 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.