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paper W1985720847 ✕

Observationobservedoriginal resultmeasured

Claim · model-written summary

Zn concentration in tops associated with a 20% yield decrease was 740 ppm for sugarbeet.

Outcome
Zinc concentrations in tops associated with a 20% YDe0
Value
740 ppme0

Verbatim

e0

“Zinc concentrations in tops associated with a 20% YD ranged from 240 ppm for field bean to 740 ppm for sugarbeet”

✓ located verbatim in the source · abstract, characters 925–1037

Title

Crop Response to Excessive Zinc Fertilization of Alkaline Soil1

Louis C. Boawn; P. E. Rasmussen Agronomy Journal 1971. doi:10.2134/agronj1971.00021962006300060015x

Other claims from this paper (7)
Observationobservedoriginal resultmeasured

Claim · model-written summary

Zn concentration in tops associated with a 20% yield decrease was 240 ppm for field bean.

Taxon
field beane0
Outcome
Zinc concentrations in tops associated with a 20% YDe0
Value
240 ppme0

Verbatim

e0

“Zinc concentrations in tops associated with a 20% YD ranged from 240 ppm for field bean to 740 ppm for sugarbeet”

✓ located verbatim in the source · abstract, characters 925–1037

Title

Crop Response to Excessive Zinc Fertilization of Alkaline Soil1

Louis C. Boawn; P. E. Rasmussen Agronomy Journal 1971. doi:10.2134/agronj1971.00021962006300060015x

Other claims from this paper (7)
Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

The most sensitive species tolerated Zn additions of 200 to 300 ppm before undergoing a significant yield decrease.

Taxon
most sensitive speciese0
Outcome
tolerated Zn additionse0
Value
200 to 300 ppme0
Qualifier
before undergoing a significant YDe0

Verbatim

e0

“The most sensitive species tolerated Zn additions of 200 to 300 ppm before undergoing a significant YD”

✓ located verbatim in the source · abstract, characters 1090–1192

Title

Crop Response to Excessive Zinc Fertilization of Alkaline Soil1

Louis C. Boawn; P. E. Rasmussen Agronomy Journal 1971. doi:10.2134/agronj1971.00021962006300060015x

Other claims from this paper (7)
Observationobservedoriginal resultmeasured

Claim · model-written summary

Crops with a significant yield decrease from excess Zn were stunted but showed no discoloration, malformation or necrosis indicative of direct metal toxicity.

Taxon
Cropse0
Outcome
stunted but showed no discoloration, malformation, or necrosise0

Not reportedDirection

Verbatim

e0

“Crops that underwent a significant YD because of excess Zn were stunted but showed no discoloration, malformation, or necrosis”

✓ located verbatim in the source · abstract, characters 1194–1320

Title

Crop Response to Excessive Zinc Fertilization of Alkaline Soil1

Louis C. Boawn; P. E. Rasmussen Agronomy Journal 1971. doi:10.2134/agronj1971.00021962006300060015x

Other claims from this paper (7)
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Field bean, snap bean, russet potato, white potato, clover and Perfection pea did not undergo a significant dry matter yield decrease under added soil Zn.

Treatment
10, 100, 200, 300, 400, and 500 ppm Zne1
Outcome
YDe0
Direction
no_changeinferrede0

Not reportedTaxonComparator

Verbatim

e0

“did not undergo a significant YD”

✓ located verbatim in the source · abstract, characters 891–923
e1

“treated with 10, 100, 200, 300, 400, and 500 ppm Zn”

✓ located verbatim in the source · abstract, characters 270–321

Title

Crop Response to Excessive Zinc Fertilization of Alkaline Soil1

Louis C. Boawn; P. E. Rasmussen Agronomy Journal 1971. doi:10.2134/agronj1971.00021962006300060015x

Other claims from this paper (7)
Observationobservedoriginal resultmeasured

Claim · model-written summary

For most crops, Zn concentration in tops associated with a 20% yield decrease fell in a 400 to 600 ppm range.

Taxon
most cropse0
Outcome
Zinc concentrations in tops associated with a 20% YDe0
Value
400 to 600‐ppme0

Verbatim

e0

“Zinc concentrations in tops associated with a 20% YD ranged from 240 ppm for field bean to 740 ppm for sugarbeet, with most crops falling in a 400 to 600‐ppm range”

✓ located verbatim in the source · abstract, characters 925–1088

Title

Crop Response to Excessive Zinc Fertilization of Alkaline Soil1

Louis C. Boawn; P. E. Rasmussen Agronomy Journal 1971. doi:10.2134/agronj1971.00021962006300060015x

Other claims from this paper (7)
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Alfalfa, Alaska pea, tomato, lettuce, spinach and sugarbeet had dry matter yield decreases between 20 and 40% under added soil Zn.

Treatment
10, 100, 200, 300, 400, and 500 ppm Zne1
Outcome
YD'se0
Direction
decreaseinferrede0
Value
20 and 40%e0

Not reportedTaxonComparator

Verbatim

e0

“YD's between 20 and 40%”

✓ located verbatim in the source · abstract, characters 695–718
e1

“treated with 10, 100, 200, 300, 400, and 500 ppm Zn”

✓ located verbatim in the source · abstract, characters 270–321

Title

Crop Response to Excessive Zinc Fertilization of Alkaline Soil1

Louis C. Boawn; P. E. Rasmussen Agronomy Journal 1971. doi:10.2134/agronj1971.00021962006300060015x

Other claims from this paper (7)

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