Search claims · PlantClaims

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

The largest Fg errors occur in grassland and shrubland areas.

Outcome: errorse1
Direction: largeste1
Setting: grassland and shrubland arease1

Not reportedTaxon

Verbatim

e1
“The largest errors occur in grassland and shrubland areas”
✓ located verbatim in the source · abstract, characters 626–683

Title

The Impact of Soil Reflectance on the Quantification of the Green Vegetation Fraction from NDVI

L. M. Montandon; Eric E. Small AGUFM 2005

Other claims from this paper (6)

Method / resourceobservedoriginal resultnegativesimulated

Claim · model-written summary

Current leaf isoprene models incur significant errors when CO2 inhibition is omitted.

Outcome: significant errorse0
Comparator: CO2 inhibition of isoprenee0

Not reportedTaxon

Verbatim

e0
“significant errors occur if the CO2 inhibition of isoprene is not taken into account”
✓ located verbatim in the source · abstract, characters 1173–1257

Title

Leaf isoprene emission rate as a function of atmospheric CO 2 concentration

R Ussell K. M Onson; S T A Nfield; E Rin B Rown; et al. 2009

Other claims from this paper (9)

Intervention effect Eucalyptus globulus emitted more isoprene at 240 ppmv CO2 than at 380 ppmv.
Intervention effect Liquidambar styraciflua did not show increased isoprene emission at the lowest CO2 concentration.
Intervention effect Eucalyptus globulus had lower isoprene emission at 520 ppmv CO2 than at 380 ppmv.
Intervention effect Liquidambar styraciflua had lower isoprene emission at 520 ppmv CO2 than at 380 ppmv.
Intervention effect Populus deltoides isoprene emission fell 30‐40% at 800 ppmv versus 400 ppmv CO2.
Intervention effect Populus tremuloides isoprene emission fell 30‐40% at 800 ppmv versus 400 ppmv CO2.
Intervention effect Populus tremuloides isoprene emission fell 33% at 1200 ppmv versus 600 ppmv CO2.
Method / resource The authors present a model of isoprene emission responding to atmospheric CO2.
Mechanism The model attributes CO2 response to competition for pyruvate between cytosolic and chloroplastic processes.

Method / resourceobservedoriginal resultnegativemeasured

Claim · model-written summary

Very low level amino acid determinations had larger errors.

Taxon: TobaccoNicotiana tabacumt0
Outcome: errorse0
Direction: largere0
Qualifier: very low level amino acidse0

Not reportedComparator

Verbatim

e0
“Only the determination of very low level amino acids is affected by larger errors”
✓ located verbatim in the source · abstract, characters 819–900

t0
“Tobacco”
✓ located verbatim in the source · title, characters 35–42

Title

Analysis of Protein Amino Acids in Tobacco Using Microwave Digestion of Plant Material

SC Moldoveanu Beiträge zur Tabakforschung international 2005. doi:10.2478/cttr-2013-0813

Other claims from this paper (3)

Method / resource The tobacco amino acid technique gave less than 10% relative standard deviation for most amino acids.
Method / resource Free amino acid measurements agreed closely with HPLC results.
Method / resource Tobacco protein measurements agreed with previously reported data.

Method / resourceobservedoriginal resultnegativemeasured

Claim · model-written summary

Square planting was the main source of vine detection errors.

Taxon: vinet0
Outcome: errorse0
Comparator: square system of plantinge0

Not reportedValue

Verbatim

e0
“The square system of planting is the main source of errors.”
✓ located verbatim in the source · abstract, characters 607–666

t0
“vine detection in airborne imagery”
✓ located verbatim in the source · title, characters 24–58

Title

An automatic method for vine detection in airborne imagery using wavelet transform and multiresolution analysis

Thierry Ranchin; B. Naert; Michel Albuisson; et al. Dialnet (Universidad de la Rioja) 2001

Other claims from this paper (1)

Method / resource The image method efficiently detected vines.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

LAI retrieval errors are proportional to the subpixel water area fraction

Treatment: water area fractione0
Outcome: LAI retrieval errorse0
Direction: proportionale0

Not reportedTaxon

Verbatim

e0
“LAI retrieval errors are proportional to water area fraction in a pixel”
✓ located verbatim in the source · abstract, characters 1201–1272

Title

Effects of subpixel water area fraction on mapping leaf area index and modeling net primary productivity in Canada

Shiyong Xu; Jing M Chen; Richard Fernandes; et al. Canadian Journal of Remote Sensing 2004. doi:10.5589/m04-039

Other claims from this paper (6)

Method / resource Retrieved LAI without the open-water correction is 13% smaller than the correct LAI
Association Subpixel water effect on LAI retrieval is largest for conifer cover
Association Subpixel water effect on LAI retrieval is smallest for deciduous cover
Method / resource NPP per unit land area is negatively biased by 9% when the subpixel water effect is ignored
Method / resource Canada-wide NPP from water-corrected LAI is only 0.69% higher than from uncorrected LAI
Observation The difference in NPP between water-corrected and uncorrected estimates can be positive or negative by province

Method / resourceobservedoriginal resultnegativesimulated

Claim · model-written summary

Current leaf-isoprene models have significant errors if CO2 inhibition is omitted.

Outcome: significant errorse0
Comparator: CO 2 inhibition of isoprenee0

Verbatim

e0
“significant errors occur if the CO 2 inhibition of isoprene is not taken into account.”
✓ located verbatim in the source · abstract, characters 1206–1292

Title

Leaf isoprene emission rate as a function of atmospheric CO ₂ concentration

MICHAEL J. WILKINSON; RUSSELL K. MONSON; NICOLE TRAHAN; et al. Global Change Biology 2008. doi:10.1111/j.1365-2486.2008.01803.x

Other claims from this paper (8)

Intervention effect Low CO2 enhanced Eucalyptus globulus isoprene emission relative to 380 ppmv.
Intervention effect Liquidambar styraciflua did not increase isoprene emission at the lowest CO2 concentration.
Intervention effect Eucalyptus globulus emission rates were lower at 520 than 380 ppmv CO2.
Intervention effect Liquidambar styraciflua emission rates were lower at 520 than 380 ppmv CO2.
Intervention effect Populus deltoides isoprene emission fell 30–40% at 800 versus 400 ppmv CO2.
Intervention effect Populus tremuloides isoprene emission fell 30–40% at 800 versus 400 ppmv CO2.
Intervention effect Populus tremuloides isoprene emission fell 33% at 1200 versus 600 ppmv CO2.
Method / resource The authors present a model describing isoprene-emission response to atmospheric CO2.

Method / resourceobservedoriginal resultnegativemeasured

Claim · model-written summary

Systematic errors occurred in mountainous areas.

Outcome: Systematic errorse0
Setting: mountainous arease0

Not reportedTaxonComparatorValue

Verbatim

e0
“Systematic errors were observed over mountainous areas where terrain shading, clumping, and bidirectional reflectance distribution function (BRDF) normalization are problematic.”
✓ located verbatim in the source · abstract, characters 707–884

Title

Assessment of a global leaf area index product from SPOT-4 VEGETATION data over selected sites in Canada

Jan Pisek; Jing M Chen; Feng Deng Canadian Journal of Remote Sensing 2007. doi:10.5589/m07-033

Other claims from this paper (3)

Method / resource Land cover classification and input data quality were the largest scene-wide bias sources.
Method / resource Aggregation from 1 km to 4 km reduced errors by about 12%.
Method / resource The global LAI dataset was reasonably accurate and may be an alternative to MODIS LAI.

Observationobservedoriginal resultnegativesimulated

Claim · model-written summary

A common temperature function gives very large errors for photosynthetic parameters above 30 °C.

Taxon: photosynthetic parameterse5
Outcome: very large errorse5
Qualifier: at temperatures > 30 °Ce5

Verbatim

e5
“Fractional errors are typically < ± 0·45 in the temperature range 25–30 °C, but very large errors occur when a common function is used to estimate the photosynthetic parameters at temperatures > 30 °C”
✓ located verbatim in the source · abstract, characters 863–1063

Title

Temperature dependence of two parameters in a photosynthesis model

R. Leuning Plant Cell & Environment 2002. doi:10.1046/j.1365-3040.2002.00898.x

Other claims from this paper (8)

Method / resourceobservedoriginal resultnegativemeasured

Claim · model-written summary

Soil-water errors from yield-based calibration were especially high in the bottom soil layer.

Taxon: CROPt0
Outcome: errors in soil-watere0
Value: particularly highe0

Not reportedOrgan / stage

Verbatim

e0
“The errors in soil-water were particularly high in the bottom soil layer”
✓ located verbatim in the source · abstract, characters 880–952

t0
“CROP MODELS”
✓ located verbatim in the source · title, characters 46–57

Title

USING OPTIMIZATION TO ESTIMATE SOIL INPUTS OF CROP MODELS FOR USE IN SITE-SPECIFIC MANAGEMENT

R. P. Braga; J. W. Jones Transactions of the ASAE 2004. doi:10.13031/2013.17599

Other claims from this paper (6)

Method / resource Soil parameters estimated from grain yield gave acceptable grain yield errors.
Method / resource Soil parameters estimated from grain yield did not predict soil water accurately.
Method / resource Most soil-water holding limits from yield-based calibration were invalid, especially the lower limit and saturation.
Method / resource Soil-water-based parameter estimation gave acceptable grain yield errors.
Method / resource Soil-water-based parameter estimation gave acceptable soil-water errors.
Method / resource Soil-water-based estimated holding limits were valid except saturation in intermediate layers.

Method / resourceobservedoriginal resultnegativemeasured

Claim · model-written summary

Prediction errors exceeded 20 when without-midrib values were predicted from with-midrib values using published data.

Taxon: Sugarcanet0
Outcome: percent-errorse0
Direction: greater thane0
Value: 20e0

Verbatim

e0
“The percent-errors of predicting WO midrib values from W midrib values were greater than 20 when tested with published data.”
✓ located verbatim in the source · abstract, characters 905–1029

t0
“Sugarcane”
✓ located verbatim in the source · title, characters 0–9

Title

Sugarcane Leaf Nutrient Concentrations: With or Without Midrib Tissue

R. M. Muchovej; P. R. Newman; Y. Luo Journal of Plant Nutrition 2005. doi:10.1081/pln-200063303

Other claims from this paper (12)

Intervention effect Including the midrib decreased nitrogen, phosphorus and calcium concentrations.
Intervention effect Including the midrib decreased magnesium, zinc and manganese concentrations.
Intervention effect Including the midrib decreased iron concentration.
Intervention effect Including the midrib increased potassium concentration.
Association With- and without-midrib measurements of P, Ca and Mg had correlations of at least 0.75 in May.
Association With- and without-midrib Mn measurements had correlations of at least 0.75 in May.
Method / resource Without-midrib nutrient concentrations cannot currently be predicted from with-midrib data.
Recommendation Sugarcane nutrient reports must specify the midrib sampling method.
Observation Estimated nitrogen differences between midrib methods were at least 10.0 when with-midrib concentrations were below critical values.
Observation Estimated phosphorus differences between midrib methods were at least 1.0 under subcritical with-midrib concentrations.
Observation Estimated potassium differences between midrib methods were at most 1.2 g kg− 1 under subcritical with-midrib concentrations.
Recommendation Growers and researchers should match nitrogen and phosphorus critical values to the midrib sampling method; this is not important for potassium.

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