Search claims · PlantClaims

Mechanismobservedoriginal resultnegativemeasured

Claim · model-written summary

Variable soil temperatures caused variable corn heights and vigor in Iowa.

Taxon: cornZea mays subsp. mayst0
Outcome: variable plant heights and vigore0
Qualifier: variable soil temperaturese0
Setting: Iowae0

Verbatim

e0
“Iowa producers dealt specifically with variable soil temperatures this year, which have now caused variable plant heights and vigor.”
✓ located verbatim in the source · abstract, characters 296–428

t0
“corn”
✓ located verbatim in the source · title, characters 34–38

Title

What's the yield effect of uneven corn heights?

Roger W. Elmore; Lori Abendroth Iowa State University Digital Repository (Iowa State University) 2006

Other claims from this paper (2)

Observation Corn fields across Iowa had significant variation in emergence and early growth.
Observation Four percent of Iowa corn acreage was replanted that year.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Northernvee is more variable than Earlivee.

Taxon: SWEET CORNSt0
Material: Northernveee0
Outcome: more variablee0
Direction: more variablee0
Comparator: Earliveee0

Verbatim

e0
“Northernvee, a three-way hybrid, is slightly earlier but more variable than Earlivee.”
✓ located verbatim in the source · abstract, characters 96–181

t0
“SWEET CORNS”
✓ located verbatim in the source · title, characters 25–36

Title

NORTHERNVEE AND EARLIVEE SWEET CORNS

E. A. KERR Canadian Journal of Plant Science 1981. doi:10.4141/cjps81-065

Other claims from this paper (4)

Method / resource Northernvee and Earlivee are first-early sweet corn cultivars for fresh market and home gardens.
Observation Northernvee is slightly earlier than Earlivee.
Observation Both cultivars have 12 to 14 rows.
Observation Both cultivars have better eating quality than most early cultivars.

Method / resourceobservedoriginal resultnegativemeasured

Claim · model-written summary

Variable reduction using the PCA method gave a clearly degraded result compared with the Variable Importance Value method.

Taxon: grasslandt0
Treatment: variable reduction using the PCA methode0
Outcome: degraded resulte0
Direction: degradede0
Comparator: the Variable Importance Value methode1

Verbatim

e0
“whereas variable reduction using the PCA method had an obviously degraded result that may have been caused by the loss of subtle variations and the fusion of noise information”
✓ located verbatim in the source · abstract, characters 1272–1447

e1
“Two variable reduction methods were examined: the Variable Importance Value method”
✓ located verbatim in the source · abstract, characters 666–748

t0
“Estimating grassland LAI”
✓ located verbatim in the source · title, characters 0–24

Title

Estimating grassland LAI using the Random Forests approach and Landsat imagery in the meadow steppe of Hulunber, China

Zhen-wang LI; Xiao-ping XIN; Huan TANG; et al. Journal of Integrative Agriculture 2017. doi:10.1016/s2095-3119(15)61303-x

Other claims from this paper (6)

Observationauthor interpretationreview summarynegativebasis n/a

Claim · model-written summary

Corn following corn has more variable stand establishment.

Taxon: cornZea mays subsp. mayse0
Outcome: Stand establishmente0
Direction: more variablee0

Verbatim

e0
“Stand establishment is more variable with corn following corn in many cases”
✓ located verbatim in the source · abstract, characters 1565–1640

Title

Corn Following Corn: Potentials and Pitfalls

Palle Pedersen Proceedings of the Integrated Crop Management Conference 2005. doi:10.31274/icm-180809-804

Other claims from this paper (1)

Observation Second-year corn yields are often 5 to 15% lower than first-year corn yields.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Seed survival was low and variable.

Taxon: American ginsengPanax quinquefoliust0
Outcome: Seed survivale0
Direction: low and variablee0

Verbatim

e0
“Seed survival was low and variable”
✓ located verbatim in the source · abstract, characters 1359–1393

t0
“AMERICAN GINSENG PANAX QUINQUEFOLIUM”
✓ located verbatim in the source · title, characters 27–63

Title

POPULATION DYNAMICS OF THE AMERICAN GINSENG PANAX QUINQUEFOLIUM (ARALIACEAE)

Walter H. Lewis; Vincent E. Zenger American Journal of Botany 1982. doi:10.1002/j.1537-2197.1982.tb13397.x

Other claims from this paper (19)

Observation The population had four morphological classes among plants aged 1–18 years.
Observation Youngest plants had one prong and 3–5 leaflets.
Observation Oldest plants had four prongs and up to 20 leaflets.
Observation Age was positively correlated with prong and leaflet number.
Observation Prong development was linear but not annual.
Observation Two prongs formed after an average of 4.5 years.
Observation The third prong arose after 7.6 years.
Observation The fourth prong arose after 13.5 years.
Observation All one-pronged plants were juveniles.
Observation Depending on year, 22–44% of two-pronged plants were juveniles.
Observation Flowering became annual after inflorescence formation in the two-pronged stage.
Observation Flower number per inflorescence correlated with class and age.
Observation In most years, 80–89% of flowering plants formed fruit.
Observation In 1980, 47% of flowering plants matured fruit under dry, hot conditions.
Observation Younger adults were more susceptible than older plants to reproductive failure and earlier abscission in stressful conditions.
Observation In 1980, 53% of flowering plants failed to fruit.
Observation Survival after establishment and adult survivorship were high at 97%.
Observation Reproduction, germination and aerial stem abscission varied markedly between years.
Observation Annual growing-season dormancy was not found.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Variable-chamber bales had 19.2% dry matter loss in the stated comparison.

Taxon: balese0
Material: variable-chamber balese0
Outcome: losse0
Value: 19.2%e0

Verbatim

e0
“variable-chamber bales had 19.2% loss”
✓ located verbatim in the source · abstract, characters 455–492

Title

Round Bale Wheat Hay Storage Losses

R. L. Huhnke Applied Engineering in Agriculture 1990. doi:10.13031/2013.26430

Other claims from this paper (6)

Observation Boot-stage wheat hay bales had greater storage losses than mid-head-stage bales.
Observation Fixed-chamber boot-stage bales had lower dry matter losses than variable-chamber bales.
Observation Uncovered fixed-chamber bales on the ground lost 11.9% dry matter.
Intervention effect Pallet storage reduced fixed-chamber bale dry matter loss to 7.2%.
Observation Bale orientation did not affect dry matter losses.
Observation Bale orientation affected changes in quality.

Method / resourceobservedoriginal resultnegativesimulated

Claim · model-written summary

Line-intercept and point-sampling estimates were highly variable for small plants.

Outcome: variable estimatese0
Direction: highly variablee0
Comparator: plants were smalle0

Verbatim

e0
“Line‐intercept and point‐sampling techniques produced highly variable estimates when plants were small”
✓ located verbatim in the source · abstract, characters 790–892

Title

Comparison of crown cover estimates for woody vegetation in arid rangelands

M. H. FRIEDEL; V. H. CHEWINGS Australian Journal of Ecology 1988. doi:10.1111/j.1442-9993.1988.tb00994.x

Other claims from this paper (8)

Method / resource Line-intercept and point-sampling estimate net species crown cover and do not recognize overlap.
Method / resource The Bitterlich gauge estimates total individual crown cover, counting overlapping areas more than once.
Method / resource Bitterlich gauge estimates exceed the other estimates when individuals intermingle or overtop one another.
Method / resource Line-intercept and point-sampling variability did not increase when plant distribution departed from randomness.
Method / resource Bitterlich gauge variability was no greater for small than large plants.
Method / resource Bitterlich gauge estimates were affected by plant aggregation.
Method / resource Selecting point spacing and gauge half-angle to optimize counting overcomes the aggregation problem.
Recommendation The variable plot method is recommended to monitor woody vegetation in arid rangelands.

Observationobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Self-pollinated regenerated lettuce plants produced significantly more variable seed sizes than controls.

Taxon: lettuceLactuca sativat0
Organ / stage: Seede0
Outcome: variable in sizee0
Direction: more variablee0
Comparator: controlse0

Verbatim

e0
“Seed arising from self-pollinated, regenerated plants were significantly more variable in size than controls”
✓ located verbatim in the source · abstract, characters 293–401

t0
“lettuce plants”
✓ located verbatim in the source · title, characters 13–27

Title

Variation in lettuce plants regenerated from protoplasts

D. E. Engler; R. G. Grogan Journal of Heredity 1984. doi:10.1093/oxfordjournals.jhered.a109978

Other claims from this paper (8)

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Old Triticale seeds showed variable chromosomal damage.

Taxon: Triticale×Triticosecalee1
Outcome: chromosomal damagee0
Qualifier: variable amounte0

Verbatim

e0
“variable amount of chromosomal damage”
✓ located verbatim in the source · abstract, characters 221–258

e1
“Triticale seeds (2 n=56)”
✓ located verbatim in the source · abstract, characters 101–125

Title

Ageing in Relation to Seed Viability, Nuclear Damage and Sensitivity to Mutagens

B. L. Kaul Caryologia 1969. doi:10.1080/00087114.1969.10796322

Other claims from this paper (10)

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Without dark preincubation, weak light increased the variable fluorescence rise time.

Outcome: times for the variable fluorescence risee0
Direction: increasede0

Not reportedTaxon

Verbatim

e0
“increased times for the variable fluorescence rise”
✓ located verbatim in the source · abstract, characters 694–744

Title

Studies on the Photoactivation of the Water-Oxidizing Enzyme

Franklin Ellis Callahan; George M. Cheniae PLANT PHYSIOLOGY 1985. doi:10.1104/pp.79.3.777

Other claims from this paper (7)

“variable”

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