Search claims · PlantClaims

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Root growth recovered after leaf area increased sufficiently.

Taxon: aspent0
Organ / stage: leaf areae0
Outcome: root growthe0
Direction: recoverede0

Verbatim

e0
“When the leaf area had increased sufficiently, root growth recovered”
✓ located verbatim in the source · abstract, characters 253–321

t0
“Aspen”
✓ located verbatim in the source · title, characters 68–73

Title

Adverse Effect of Shoot Growth on Root Growth in Rooted Cuttings of Aspen

LENNART ELIASSON Physiologia Plantarum 1971. doi:10.1111/j.1399-3054.1971.tb01441.x

Other claims from this paper (6)

Observation Roots grew well when shoot growth was absent.
Association Root growth decreased after shoot growth began.
Intervention effect Removing shoot growth points increased the fraction of photosynthate used for root growth.
Intervention effect Short-day treatment increased the fraction of photosynthate used for root growth.
Intervention effect Reducing shoot growth increased root/shoot ratios.
Mechanism The authors attribute the growth balance to competition for photosynthetic carbohydrates.

Observationauthor interpretationreview summarybasis n/a

Claim · model-written summary

Root permeability per surface area varies among species and root parts.

Organ / stage: different parts of the same roote0
Outcome: permeability of roots per unit surface areae0

Not reportedTaxon

Verbatim

e0
“The permeability of roots per unit surface area varies between species, and between different parts of the same root (depending on age).”
✓ located verbatim in the source · abstract, characters 253–389

Title

Water movement through root systems

E. I. Newman Philosophical transactions of the Royal Society of London. Series B, Biological sciences 1976. doi:10.1098/rstb.1976.0025

Other claims from this paper (6)

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

H. pseudorobustus reduced root surface area.

Taxon: Sycamoret0
Interactor: Helicotylenchus pseudorobustusHelicotylenchus pseudorobustuse0pathogen
Outcome: root surface areae0
Direction: reductione0

Verbatim

e0
“Helicotylenchus pseudorobustus caused only a reduction in root surface area.”
✓ located verbatim in the source · abstract, characters 827–903

t0
“Sycamore”
✓ located verbatim in the source · title, characters 71–79

Title

Occurrence, Parasitism, and Pathogenicity of Nematodes Associated with Sycamore (Platanus occidentalis L.).

R C Churchill; J L Ruehle PubMed 1971

Other claims from this paper (9)

Observation Ten stylet-bearing nematode species were recovered from sycamore stands in Georgia.
Observation Helicotylenchus, Xiphinema and Criconemoides were most frequent.
Observation Four named nematode populations increased on greenhouse sycamore.
Observation Five named nematode populations did not increase on greenhouse sycamore.
Observation H. galeatus and S. brachyurum were semi-endoparasites.
Observation H. dihystera and H. pseudorobustus were migratory endoparasites.
Observation H. galeatus caused extensive root necrosis.
Observation H. galeatus markedly decreased seedling root and top fresh weights.
Observation H. dihystera and S. brachyurum produced sparse unhealthy root growth.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Soybean roots showed root surface area.

Taxon: SoybeansGlycine maxt0
Material: Harosoy 63e0
Outcome: root surface areae0
Direction: greatere0
Value: nearly twofolde0
Comparator: Aodae0

Verbatim

e0
“Harosoy 63 had a more extensive root system, including a nearly twofold greater root surface area, than Aoda.”
✓ located verbatim in the source · abstract, characters 378–487

t0
“Soybeans”
✓ located verbatim in the source · title, characters 19–27

Title

Rooting Systems of Soybeans. I. Differences in Root Morphology among Varieties¹

C. D. Raper; S. A. Barber Agronomy Journal 1970. doi:10.2134/agronj1970.00021962006200050009x

Other claims from this paper (2)

Observation Soybean roots showed distinctive taproot development.
Observation Soybean roots showed disposition of primary branches.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Shading significantly reduced root growth, root-to-shoot ratio and leaf weight per area.

Taxon: appleMalus domesticat0
Material: Granny Smithe0
Treatment: Shadinge0
Outcome: root growth, the root : shoot ratio and leaf weight per unit areae0
Direction: reducede0

Not reportedComparator

Verbatim

e0
“Shading young Granny Smith trees significantly reduced root growth, the root : shoot ratio and leaf weight per unit area.”
✓ located verbatim in the source · abstract, characters 197–318

t0
“apple”
✓ located verbatim in the source · title, characters 46–51

Title

The effect of shading and Alar application on apple root: shoot ratios in Western Australia

J.E.L. Cripps Journal of Horticultural Science 1972. doi:10.1080/00221589.1972.11514470

Other claims from this paper (6)

Mechanism High apple root-to-shoot ratios may adapt trees to high-light Mediterranean-type climate.
Intervention effect Shading that reduced light intensity 30% slightly increased shoot weight.
Intervention effect Shading reduced starch accumulation, especially below ground.
Intervention effect Alar at 2000 ppm reduced shoot growth.
Intervention effect Alar at 2000 ppm did not reduce root growth.
Intervention effect Unirrigated and unfertilized trees had less shoot growth, with a weaker effect under shade.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher nitrogen increased root surface area from 1084 to 1736 cm2.

Taxon: Lolium multiflorum var. westerwoldicumLolium multiflorumt0
Outcome: total root surface areae0
Value: 1084 and 1736 cm2e0

Not reportedTreatmentComparatorDirection

Verbatim

e0
“total root surface area 1084 and 1736 cm2”
✓ located verbatim in the source · abstract, characters 503–544

t0
“Lolium multiflorum var. westerwoldicum”
✓ located verbatim in the source · title, characters 60–98

Title

The effect of nitrogen on the root and shoot development of Lolium multiflorum var. westerwoldicum.

J.J. Schuurman; L. Knot Netherlands Journal of Agricultural Science 1974. doi:10.18174/njas.v22i2.17225

Other claims from this paper (9)

Intervention effect Higher nitrogen increased top dry matter from 5.0 to 14.6 g.
Intervention effect Higher nitrogen increased water consumption from 2660 to 4850 cm2.
Intervention effect Higher nitrogen increased root dry matter from 1.4 to 3.4 g.
Intervention effect Higher nitrogen increased total primary root length from 2589 to 3374 cm.
Intervention effect Higher nitrogen increased primary root number from 103 to 161.
Intervention effect Higher nitrogen increased topsoil secondary roots from 63 to 83.
Intervention effect Higher nitrogen increased subsoil secondary roots from 71 to 83.
Intervention effect Higher nitrogen rates enhanced top growth 8 weeks after sowing by at least 72%.
Intervention effect Higher nitrogen rates enhanced top growth 13 weeks after sowing by at least 188%.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Low root temperature reduced water consumption per unit leaf area.

Taxon: Sugarcanet0
Treatment: Low root temperaturese0
Outcome: water consumption per unit leaf areae0
Direction: reducede0

Not reportedComparator

Verbatim

e0
“Low root temperatures reduced water consumption per unit leaf area”
✓ located verbatim in the source · abstract, characters 609–675

t0
“Sugarcane”
✓ located verbatim in the source · title, characters 22–31

Title

Growth Studies on the Sugarcane Plant. I. Effects of Temperature¹

J. C. Mongelard; L. Mimura Crop Science 1971. doi:10.2135/cropsci1971.0011183x001100060007x

Other claims from this paper (7)

Association Dry matter production was closely related to water consumption, r = 0.98.
Association Dry matter production was closely related to top visible dewlap height increase, r = 0.95.
Association Dry matter production was closely related to spindle growth rate, r = 0.91.
Method / resource Spindle growth was more reliable than dewlap height for short-term dry-weight production measurements.
Intervention effect Low root temperature affected leaf growth more than low air temperature.
Intervention effect Temperature had no effect on transpiration ratio.
Intervention effect Fresh weight to dry-weight increase ratio was about four times lower under cool versus warm root conditions.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Moisture stress reduced sunflower photosynthetic area and root/shoot ratio.

Taxon: sunflowerHelianthus annuuse1
Material: Peredovice1
Treatment: Moisture stresse0
Outcome: photosynthetic area and the root/shoot ratioe0
Direction: reducede0

Not reportedComparator

Verbatim

e0
“Moisture stress reduced photosynthetic area and the root/shoot ratio”
✓ located verbatim in the source · abstract, characters 506–574

e1
“Growth of the sunflower cultivar Peredovic”
✓ located verbatim in the source · abstract, characters 8–50

Title

Effects of CCC and Moisture Stress on Sunflower

J. V. Lovett; Desnee A. Campbell Experimental Agriculture 1973. doi:10.1017/s0014479700010127

Other claims from this paper (4)

Intervention effect CCC increased sunflower stem and petiole width.
Intervention effect CCC decreased sunflower internode length, head diameter and photosynthetic area.
Intervention effect CCC increased sunflower stomatal density.
Intervention effect Moisture stress increased sunflower stomatal density.

Method / resourceobservedreview summarybasis n/a

Claim · model-written summary

A fertilizer requirement estimation method based on root area was proposed.

Taxon: TREEe0
Outcome: ESTIMATING FERTILIZER REQUIREMENTSe0
Qualifier: ROOT AREA INVOLVEDe0
Comparator: TREE'S DBHe0

Verbatim

e0
“A METHOD FOR ESTIMATING FERTILIZER REQUIREMENTS BASED ON THE ROOT AREA INVOLVED RATHER THAN ON THE TREE'S DBH HAS BEEN PROPOSED”
✓ located verbatim in the source · abstract, characters 403–530

Title

ADVANCES IN GENERAL TREE MAINTENANCE

P P Pirone Arboricultural Journal 1975. doi:10.1080/03071375.1975.10590439

Other claims from this paper (2)

Method / resource A truck-mounted tree-moving machine can dig, transport and plant trees up to seven or eight inches DBH.
Method / resource Chemical pruning materials that inhibit cell division have been developed for trees.

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Intensive culture significantly altered slash pine root surface area and distribution.

Taxon: Pinus elliottii Engelm.Pinus elliottiie1
Treatment: Intensive culturee0
Outcome: root surface area and root distributione0

Not reportedComparatorDirection

Verbatim

e0
“Intensive culture significantly altered root surface area and root distribution.”
✓ located verbatim in the source · abstract, characters 450–530

e1
“Root development of 12‐year‐old airlayers and seedlings of Pinus elliottii Engelm. was investigated after 10 years of cultural management on a moderately deep sandy soil.”
✓ located verbatim in the source · abstract, characters 9–179

Title

Root Development of Intensively Cultivated Slash Pine

Robert P. Schultz Soil Science Society of America Journal 1972. doi:10.2136/sssaj1972.03615995003600010036x

Other claims from this paper (11)

Association Airlayers and seed-grown trees did not differ significantly in total root surface area.
Association Airlayers and seed-grown trees did not differ significantly in shoot growth.
Observation All seedlings had well-defined taproots.
Observation Most airlayers had one to three heavy sinker roots reaching maximum rooting depth.
Observation Half of total root surface area was in the surface 0.3 m of soil.
Observation Six percent of total root surface area occurred below 1.35 m.
Observation Within 1 m of the bole, 42% of roots were in the surface 0.3 m.
Observation Within 1 m of the bole, 24% of roots were below 1.35 m.
Observation Roots under 2 mm diameter made up half of total root surface area.
Association Vegetative propagules developed as well as seedling stock.
Observation Both vegetative propagules and seedling stock rooted profusely to 2.5 m.

“root area”

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