Search claims · PlantClaims

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Fire restrained shoot height and reduced dry weight per shoot

Taxon: L. chinensisLeymus chinensise0
Treatment: firee0
Outcome: height, and decrease the dry weight per shoote0
Direction: decreasee0

Verbatim

e0
“fire could produce unfavorable effects on the shoot development of L. chinensis, restrain the height, and decrease the dry weight per shoot”
✓ located verbatim in the source · abstract, characters 154–293

Title

Influence of Fire Factor on Leymus chinensis Population in Inner Mongolia Steppe

Bao Ya Annual economic survey .../Annual economic survey - Central Bank of Trinidad and Tobago 2000

Other claims from this paper (4)

Observation Fire increased density and aboveground biomass
Observation Successive-year burning harmed L. chinensis
Observation Fire harmed L. chinensis in Stipa grandis community
Recommendation Burning every four to five years was recommended for L. chinensis population development

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing cleavers density decreased plant height, dry weight and seed number.

Taxon: cleaverse0
Treatment: weed densitye1
Outcome: height, dry weight, seeds numbere1
Direction: decreasee1

Verbatim

e0
“cleavers (Galium aparine L.)”
✓ located verbatim in the source · abstract, characters 96–124

e1
“An increase in weed density leads to a decrease in height, dry weight, seeds number and weight per plant”
✓ located verbatim in the source · abstract, characters 521–625

Title

Reproduction of cleavers (Galium aparine L.) under different densities and nitrogen rates

R. Nakova Acta herbologica 2008

Other claims from this paper (7)

Association Increasing cleavers density decreased seed weight per plant.
Association Nitrogen effects on seed production varied with weed density.
Intervention effect Nitrogen rates of 200 and 300 kg N/ha-1 increased cleavers reproductive ability at all densities.
Mechanism High biomass production was asserted to explain enhanced reproduction under nitrogen.
Method / resource Regression fits for cleavers reproduction had R2 values of 0.94 to 0.99.
Association Regression showed a linear relationship of reproduction to cleavers density and nitrogen rate.
Method / resource Regression models may predict cleavers reproduction under different density and nitrogen rates.

Associationobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Higher density significantly decreased per-plant dry weight accumulation.

Taxon: Panicum repensPanicum repenst0
Treatment: plant densitye0
Outcome: dry weight accumulation on a per plant basise0
Direction: decreasee0

Verbatim

e0
“Increase in plant density resulted in a very significant decrease in dry weight accumulation on a per plant basis”
✓ located verbatim in the source · abstract, characters 481–594

t0
“Panicum repens”
✓ located verbatim in the source · title, characters 25–39

Title

Studies on the biology ofPanicum repensL. II. Intraspecific competition and resource‐allocation

J. P. N. R. Chandrasena; H. C. P. Peiris Tropical Pest Management 1989. doi:10.1080/09670878909371389

Other claims from this paper (8)

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Grass competition significantly reduced mesquite dry weight.

Taxon: P. glandulosaNeltuma glandulosae0
Treatment: grown with S. scopariume0
Interactor: S. scopariumSchizachyrium scopariume0other
Outcome: P. glandulosa above-, belowground, and total dry weighte0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“When P. glandulosa was grown with S. scoparium, there was a significant decrease in P. glandulosa above-, belowground, and total dry weight at all S. scoparium densities tested.”
✓ located verbatim in the source · abstract, characters 361–538

Title

Competition between Schizachyrium scoparium and Prosopis glandulosa

O. W. van Auken; J. K. Bush American Journal of Botany 1988. doi:10.2307/2443997

Other claims from this paper (6)

Intervention effect Mesquite did not significantly reduce grass dry weight.
Association Mesquite root-to-shoot ratio rose nearly threefold with grass density.
Association Grass root-to-shoot ratio rose nearly threefold with grass density.
Association Grass flowering stalk number and length declined with density.
Intervention effect Mesquite caused a slight nonsignificant reduction in grass flowering stalks.
Observation The authors predict low mesquite establishment in dense productive grasslands.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Waterlogging strongly reduced root dry weight in G. urbanum and less tolerant families.

Taxon: G. urbanumGeum urbanume1
Treatment: waterlogginge1
Outcome: root dry weighte0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“a large decrease in root dry weight”
✓ located verbatim in the source · abstract, characters 1053–1088

t0
“Populations of Geum rivale L. and G. urbanum L. were collected from a range of habitats”
✓ located verbatim in the source · abstract, characters 8–95

e1
“Waterlogging of G. urbanum and less‐tolerant families”
✓ located verbatim in the source · abstract, characters 953–1006

Title

Comparative studies of plant growth and distribution in relation to waterlogging

S. WALDREN; J. R. ETHERINGTON; M. S. DAVIES New Phytologist 1988. doi:10.1111/j.1469-8137.1988.tb00223.x

Other claims from this paper (15)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Deeper water reduced the below-ground to above-ground dry-weight ratio in Juncus gerardi.

Taxon: Juncus gerardiJuncus gerardiit0
Outcome: ratio of below‐ground/above‐ground dry weighte0
Direction: decreasee0
Setting: deeper water depthse0

Verbatim

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

e0
“a decrease in the ratio of below‐ground/above‐ground dry weight at deeper water depths”
✓ located verbatim in the source · abstract, characters 988–1074

Title

The role of water level and salinity in the regulation of Juncus gerardi populations in former ricefields in southern France

A. Charpentier; F. Mesléard; P. Grillas Journal of Vegetation Science 1998. doi:10.2307/3237100

Other claims from this paper (8)

Intervention effect Low salinity delayed Juncus gerardi germination.
Intervention effect Moderate salinity reduced Juncus gerardi germination rate.
Intervention effect Water depth from 0 to 10 cm did not affect Juncus gerardi germination.
Intervention effect Salinity negatively affected Juncus gerardi below-ground parts, shoots, and inflorescences.
Intervention effect Flooding amplified the negative effect of salinity on Juncus gerardi vegetative growth.
Intervention effect Freshwater flooding at 0 to 20 cm did not limit Juncus gerardi biomass production during the experiment.
Association Juncus gerardi cover was negatively correlated with water depth in an abandoned rice field.
Mechanism The authors propose that salinity limits seedling recruitment and, with water depth, suppresses vegetative growth, explaining aggregated Juncus gerardi distribution.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Lower soil water reduced leaf dry weight per unit area.

Taxon: Chromolaena odorataChromolaena odoratat0
Treatment: decrease of soil water contente0
Outcome: leaf dry weight per unit areae0
Direction: declinede0

Not reportedComparator

Verbatim

e0
“with the decrease of soil water content, the leaf dry weight per unit area, chlorophyll content, net photosynthetic rate, stomatal conductance, transpiration rate, intercellular CO2 concentration and light saturation point declined”
✓ located verbatim in the source · abstract, characters 288–519

t0
“Chromolaena odorata”
✓ located verbatim in the source · title, characters 74–93

Title

Effects of soil water regimes on the growth of the exotic invasive plant: Chromolaena odorata

Wu JinRong WIT transactions on ecology and the environment 2007

Other claims from this paper (5)

Intervention effect Lower soil water reduced chlorophyll content and gas exchange measures.
Intervention effect Lower soil water reduced transpiration rate, intercellular CO2 concentration and light saturation point.
Intervention effect Lower soil water increased water use efficiency and belowground to aboveground biomass ratio.
Observation The authors infer some adaptation to soil water stress.
Observation The authors infer water stress affects growth and spread to drier areas.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Grass competition significantly reduced mesquite aboveground, belowground, and total dry weight at all tested grass densities.

Taxon: P. glandulosaNeltuma glandulosae0
Treatment: grown with S. scopariume0
Interactor: S. scopariumSchizachyrium scopariume0weed
Outcome: P. glandulosa above‐, belowground, and total dry weighte0
Direction: decreasee0
Qualifier: at all S. scoparium densities testede0

Not reportedComparator

Verbatim

e0
“When P. glandulosa was grown with S. scoparium , there was a significant decrease in P. glandulosa above‐, belowground, and total dry weight at all S. scoparium densities tested.”
✓ located verbatim in the source · abstract, characters 361–539

Title

COMPETITION BETWEEN SCHIZACHYRIUM SCOPARIUM AND PROSOPIS GLANDULOSA

O. W. Van Auken; J. K. Bush American Journal of Botany 1988. doi:10.1002/j.1537-2197.1988.tb13501.x

Other claims from this paper (6)

Intervention effect Mesquite did not significantly reduce grass dry weight.
Association Mesquite root to shoot ratio rose almost threefold from the lowest to the highest grass density.
Association Grass root to shoot ratio rose almost threefold from the lowest to the highest grass density.
Association Grass flowering stalk number and length fell as density increased.
Intervention effect Mesquite presence caused a slight, nonsignificant reduction in grass flowering stalk number and length.
Association The authors predict low establishment of mesquite and other woody legumes in high-density, productive grasslands.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing cleavers density decreased seed weight per plant.

Taxon: cleaverse0
Treatment: weed densitye1
Outcome: weight per plante1
Direction: decreasee1

Verbatim

e0
“cleavers (Galium aparine L.)”
✓ located verbatim in the source · abstract, characters 96–124

e1
“An increase in weed density leads to a decrease in height, dry weight, seeds number and weight per plant”
✓ located verbatim in the source · abstract, characters 521–625

Title

Reproduction of cleavers (Galium aparine L.) under different densities and nitrogen rates

R. Nakova Acta herbologica 2008

Other claims from this paper (7)

Association Increasing cleavers density decreased plant height, dry weight and seed number.
Association Nitrogen effects on seed production varied with weed density.
Intervention effect Nitrogen rates of 200 and 300 kg N/ha-1 increased cleavers reproductive ability at all densities.
Mechanism High biomass production was asserted to explain enhanced reproduction under nitrogen.
Method / resource Regression fits for cleavers reproduction had R2 values of 0.94 to 0.99.
Association Regression showed a linear relationship of reproduction to cleavers density and nitrogen rate.
Method / resource Regression models may predict cleavers reproduction under different density and nitrogen rates.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Individual capitulum dry weight decreased with increasing altitude.

Taxon: Inula racemosaInula racemosat0
Outcome: dry weight of individual capitulae0
Direction: decreasinge0
Setting: altitudee0

Verbatim

e0
“increasing altitude resulted in a decrease in relative and absolute allocation of biomass to reproductive structures in the form of decreasing dry weight of individual capitula”
✓ located verbatim in the source · abstract, characters 1029–1205

t0
“Inula racemosa”
✓ located verbatim in the source · title, characters 82–96

Title

Among and within population variation in growth dynamics and floral sex ratios in Inula racemosa; a critically endangered medicinal herb of N. W. Himalayas

Peerzada Arshid Shabir; Irshad A. Nawchoo; Aijaz A. Wani International Journal of Biodiversity and Conservation 2013. doi:10.5897/ijbc2013.0621

Other claims from this paper (10)

Association Growth parameters differed significantly with altitude.
Observation Stem height showed the largest difference among populations.
Association Foliar and floral numbers and dimensions followed plant height patterns.
Observation Floret number varied significantly among plants in four populations.
Observation Within-plant variation was 19–34%.
Observation Among-plant variation was 38–72%.
Observation Seed set was 59–72% of ovules per capitulum.
Association Total capitula number declined with increasing altitude.
Association Relative allocation to rhizomes tended to increase with altitude.
Association Altitude did not affect absolute allocation to below-ground and vegetative structures.

“dry weight decrease”

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