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“nitrogen use efficiency”

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1960s 15

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Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Applied nitrogen increased sorghum water-use efficiency.

Taxon: Grain SorghumsSorghum bicolort0
Treatment: applied Ne0
Outcome: efficiency of water usee0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“Irrigation and applied N both increased the efficiency of water use”
✓ located verbatim in the source · abstract, characters 298–365

t0
“Grain Sorghums”
✓ located verbatim in the source · title, characters 58–72

Title

Irrigation Water Management and Nitrogen Fertilization of Grain Sorghums¹

J. T. Musick; D. W. Grimes; G. M. Herron Agronomy Journal 1963. doi:10.2134/agronj1963.00021962005500030028x

Other claims from this paper (8)

Association Grain yield had a curvilinear relation with number of irrigations.
Association Grain yield had a curvilinear relation with soil moisture depletion.
Association Grain yield had a curvilinear relation with increments of applied nitrogen.
Association Sorghum evapotranspiration was related to number of irrigations.
Association Sorghum evapotranspiration was related to available soil moisture.
Intervention effect Growth response to applied nitrogen slightly increased sorghum evapotranspiration.
Intervention effect Irrigation increased sorghum water-use efficiency.
Observation Maximum sorghum water-use efficiency occurred at yield below maximum production.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Adding nitrogen improved cotton water use efficiency in some cases.

Taxon: CottonGossypium hirsutumt0
Treatment: addition of nitrogene0
Outcome: Water use efficiencye0
Direction: improvede0
Qualifier: in some casese0

Not reportedComparator

Verbatim

e0
“Water use efficiency (kg lint per cm of water used) was improved, in some cases, with the addition of nitrogen”
✓ located verbatim in the source · abstract, characters 906–1016

t0
“Cotton”
✓ located verbatim in the source · title, characters 14–20

Title

Functions for Cotton (Gossypium hirsutum L.) Production from Irrigation and Nitrogen Fertilization Variables: I. Yield and Evapotranspiration¹

Donald W. Grimes; H. Yamada; W. L. Dickens Agronomy Journal 1969. doi:10.2134/agronj1969.00021962006100050035x

Other claims from this paper (5)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Shoot-root ratios and efficiency of water use of bitterbrush differed with nitrogen and soil layer treatments.

Taxon: BitterbrushPurshia tridentatat0
Treatment: N and soil layer treatmentse3
Outcome: Shoot‐root ratios and efficiency of water usee3
Direction: differede3

Verbatim

t0
“Response of Bitterbrush Seedlings to Nitrogen and Moisture on a Granitic Soil”
✓ located verbatim in the source · title, characters 0–77

e3
“Shoot‐root ratios and efficiency of water use by bitterbrush differed with respect to N and soil layer treatments”
✓ located verbatim in the source · abstract, characters 849–962

Title

Response of Bitterbrush Seedlings to Nitrogen and Moisture on a Granitic Soil

J. O. Klemmedson; R. B. Ferguson Soil Science Society of America Journal 1969. doi:10.2136/sssaj1969.03615995003300060044x

Other claims from this paper (8)

Intervention effect Shoot and root weights were greater in surface-soil seedlings without added N than in seedlings from lower soil layers.
Intervention effect Added N reduced seedling yields on surface soils.
Intervention effect Added N increased seedling yields on the 40-90 cm soil layer.
Intervention effect A high moisture regime diminished the adverse effects of added N on seedlings grown in surface-layer soil.
Intervention effect A high moisture regime improved the effectiveness of added N on seedlings in lower-layer soils.
Observation Six granitic soils were deficient in nitrogen for barley.
Intervention effect Bitterbrush responded negatively or not at all to added N on the same soils.
Association Bitterbrush yields declined when plant N reached about 2.0 percent.

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“nitrogen use efficiency”

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1960s 15