Search claims · PlantClaims

Associationobservedoriginal resultmeasured

Claim · model-written summary

The six-year mean correlation between oat population yield and yield variability was −.60.

Taxon: OatsAvena sativat0
Material: 94 populationse0
Outcome: variability in yielde1
Direction: decreaseinferrede1
Value: −.60**e2
Qualifier: six year meane2
Setting: Gainesville, Flae0

Verbatim

t0
“Environmental Variability in Oats (Avena sp.)”
✓ located verbatim in the source · title, characters 37–82

e0
“The yield of 94 populations consisting of 89 homozygous and homogeneous lines and five recommended varieties was tested for 6 years at Gainesville, Fla”
✓ located verbatim in the source · abstract, characters 0–151

e1
“The r values between the yield of the 94 populations and their variability in yield over the 6 years”
✓ located verbatim in the source · abstract, characters 153–253

e2
“six year mean = −.60**”
✓ located verbatim in the source · abstract, characters 361–383

Title

Relationship between Grain Yield and Environmental Variability in Oats (Avena sp.)¹

P. L. Pfahler Crop Science 1972. doi:10.2135/cropsci1972.0011183x001200020036x

Other claims from this paper (7)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Natural lodging severely reduced seed yield of perennial ryegrass in all years.

Taxon: perennial ryegrassLolium perennee0
Treatment: Natural lodginge1
Outcome: seed yielde1
Direction: reducede1
Qualifier: severelye1
Setting: field experimentse0

Verbatim

e0
“The effects of lodging on the seed yield of S. 23 and S. 24 perennial ryegrass were investigated in a series of field experiments from 1973 to 1976”
✓ located verbatim in the source · abstract, characters 8–155

e1
“Natural lodging severely reduced seed yield in all years as a result of a decrease in the number of seeds per unit area”
✓ located verbatim in the source · abstract, characters 157–276

Title

Lodging studies inLolium perennegrown for seed: 1. Seed yield and seed yield components

P. D. Hebblethwaite; A. Burbidge; D. Wright The Journal of Agricultural Science 1978. doi:10.1017/s0021859600055337

Other claims from this paper (4)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

In the other years, yield and plant height were only weakly negatively correlated (r = -0.15 to -0.22).

Taxon: spring barleyHordeum vulgaree1
Material: 150 samplese1
Outcome: yielde4
Direction: decreaseinferrede4
Value: r = -0.15 ...-0.22e4
Qualifier: other yearse4

Verbatim

e1
“150 samples of spring barley of various ecological and geographical origin”
✓ located verbatim in the source · abstract, characters 40–114

e4
“Low feedback in other years between yield and plant height (r = -0.15 ...-0.22) indicates that higher yields in these years formed the undersized genotypes”
✓ located verbatim in the source · abstract, characters 1219–1374

Title

RESEARCHING AND SELECTING OF THE SPRING BARLEY ON GROUNDS OF RESISTANCE TO LODGING AND YIELD

О. V. Levakova Vestnik of the Russian agricultural science 1970. doi:10.30850/vrsn/2018/3/39-41

Other claims from this paper (5)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

In a field experiment in the Imperial Valley, sugarbeet root yield decreased with preplanting population of Heterodera schachtii as y = 100 (0.99886)^(Pi) - 100.

Taxon: SugarbeetBeta vulgaris subsp. vulgarist0
Outcome: root yielde0
Direction: decreaseinferrede0
Setting: Imperial Valleye0

Verbatim

e0
“In a field experiment in the Imperial Valley the relation between root yield (y) and P(i) was y = 100 (0.99886)(P(i) ) - 100, and the tolerance limit was 100 eggs/100 g soil”
✓ located verbatim in the source · abstract, characters 588–761

t0
“Sugarbeet”
✓ located verbatim in the source · title, characters 91–100

Title

The Relationship Between Population Density of Heterodera schachtii, Soil Temperature, and Sugarbeet Yields.

D A Cooke; I J Thomason PubMed 1979

Other claims from this paper (5)

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Slight seed maggot damage to snap bean seedlings caused a significant yield loss of 11–48%.

Taxon: snap beane2
Treatment: slightly damaged by seed maggots (0–25% loss of the 1st pair of unifoliate leaves)e2
Interactor: seed maggotse2pest
Outcome: yielde2
Direction: decreaseinferrede2
Value: 11–48%e2

Not reportedComparator

Verbatim

e2
“When seedlings from 3 snap bean cultivars were slightly damaged by seed maggots (0–25% loss of the 1st pair of unifoliate leaves), there was a significant yield loss (11–48%)”
✓ located verbatim in the source · abstract, characters 314–488

Title

Seed Maggot Injury on Surviving Bean Seedlings Influences Yield12

E. V. Vea; C. J. Eckenrode Journal of Economic Entomology 1976. doi:10.1093/jee/69.4.545

Other claims from this paper (5)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Rice grain yield was lower with 81 stylo plants per square metre than in monoculture.

Taxon: RiceOryza sativae0
Treatment: grown with 81 stylo plants/m. 2e0
Interactor: styloStylosanthes guianensise0weed
Outcome: Rice grain yielde0
Direction: decreaseinferrede0
Value: 63·4 gm./m. 2e0
Qualifier: 98·4 gm./m. 2e0
Comparator: monoculturee0

Verbatim

e0
“Rice grain yield varied from 98·4 gm./m. 2 in monoculture to 63·4 gm./m. 2 when grown with 81 stylo plants/m. 2”
✓ located verbatim in the source · abstract, characters 258–369

Title

Undersowing Rice (Oryza sativa) with Stylosanthes guyanensis. I. Plant Density

H. M. Shelton; L. R. Humphreys Experimental Agriculture 1975. doi:10.1017/s0014479700006529

Other claims from this paper (3)

Association Rice vegetative growth declined as stylo density increased.
Observation Rice was more competitive than stylo in mixed culture.
Association Stylo growth was relatively independent of rice density from 20 to 120 rice plants per square metre.

Mechanismauthor interpretationoriginal resultnegativesimulated

Claim · model-written summary

Early drought caused 30–40% yield loss through reduced intercepted radiation.

Taxon: barleyHordeum vulgaree2
Outcome: losse0
Direction: losse0
Value: 30–40%e0
Qualifier: stressed from the beginning of the seasone0

Verbatim

e0
“it accounted for a loss of 30–40% for treatments that were stressed from the beginning of the season”
✓ located verbatim in the source · abstract, characters 861–961

e1
“decrease of intercepted radiation was the major factor in reducing yield”
✓ located verbatim in the source · abstract, characters 783–855

e2
“spring barley”
✓ located verbatim in the source · abstract, characters 59–72

Title

The effects of drought on barley growth: models and measurements showing the relative importance of leaf area and photosynthetic rate

B. J. Legg; W. Day; D. W. Lawlor; et al. The Journal of Agricultural Science 1979. doi:10.1017/s0021859600053958

Other claims from this paper (7)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mineral fertilizer reduced productivity variability by 1.3 times.

Taxon: PLANT COMMUNITIESt0
Treatment: Mineral fertilizers (P40K60)e0
Outcome: variabilitye0
Direction: decreasee0
Value: 1.3 timese0

Not reportedComparator

Verbatim

e0
“Mineral fertilizers (P40K60) were contributed to an increase in productivity by 21-44% (the share of sown grasses from 84 to 94% in the yield structure), as well as a decrease in the degree of its variability by 1.3 times”
✓ located verbatim in the source · abstract, characters 1076–1297

t0
“FALLOW LANDS PLANT COMMUNITIES OF MESHCHOVSKY OPOLYE IN THE KALUGA REGION”
✓ located verbatim in the source · title, characters 43–116

Title

PRODUCTION CAPABILITIES AND EXPOLIATION OF FALLOW LANDS PLANT COMMUNITIES OF MESHCHOVSKY OPOLYE IN THE KALUGA REGION

V. А. Burluckij; V. N. Mazurov; P. S. Semeshkina; et al. Vestnik of the Russian agricultural science 1970. doi:10.30850/vrsn/2021/1/45-52

Other claims from this paper (7)

Observation Advent communities had 1.2–1.7 times higher productivity than trivial communities.
Observation Advent communities were more diverse in productivity and green mass quality.
Association Immigration of advents transformed aboriginal communities.
Intervention effect Mineral fertilizer increased productivity by 21-44%.
Observation Sown grasses comprised 84 to 94% of yield under mineral fertilizer.
Recommendation Without agrotechnological improvement the phytomass was judged unsuitable as an important forage source.
Method / resource Joint use of unmanned aerial vehicles and Braun-Blanquet classification was shown feasible for routine phytocenosis analysis.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Vegetative leaf efficiency increased as altitude decreased.

Taxon: maizeZea mayst0
Outcome: efficiency of the leavese0
Direction: increasede0

Verbatim

e0
“During most of the vegetative phase the efficiency of the leaves and crop growth rate (C) increased with decrease in altitude”
✓ located verbatim in the source · abstract, characters 880–1005

t0
“maize”
✓ located verbatim in the source · title, characters 20–25

Title

Growth and yield of maize at different altitudes in Rhodesia

J. H. WILSON; M. ST. J. CLOWES; J. C. S. ALLISON Annals of Applied Biology 1973. doi:10.1111/j.1744-7348.1973.tb01311.x

Other claims from this paper (19)

Observation Total dry weight was greatest at Henderson.
Observation Grain dry weight was greatest at Henderson.
Observation SR 52 exceeded N × K in total and grain dry weight, with a small difference at Chiredzi.
Observation Initial leaf area index decreased with altitude.
Observation Flowering occurred later at higher altitude.
Observation Leaf area index at flowering was greatest at Henderson.
Observation Leaf area index at flowering was greater in SR 52 than N × K.
Observation Leaves withered sooner after flowering at Chiredzi and Grasslands than Henderson.
Observation Leaf withering time was similar between varieties at each site.
Observation Vegetative crop growth rate increased as altitude decreased.
Observation Vegetative leaf efficiency was greater in N × K than SR 52.
Observation Vegetative crop growth rate was greater in N × K than SR 52.
Observation Postflowering dry matter accumulation was greater at Henderson.
Observation Postflowering dry matter accumulation was greater for SR 52 at Henderson and Grasslands, but not Chiredzi.
Observation Postflowering leaf area duration was greater at Henderson.
Observation Postflowering leaf area duration was greater in SR 52 except at Chiredzi.
Observation Postflowering leaf efficiency was least at Henderson and greatest at Grasslands.
Observation Postflowering leaf efficiency differed little between varieties at each site.
Observation The fraction of postflowering dry matter in grain decreased with altitude and was greater in SR 52.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Lesser irrigation decreased sunflower yield.

Taxon: SunflowerHelianthus annuuse0
Treatment: lesser irrigatione2
Outcome: yielde2
Direction: decreaseinferrede2
Comparator: IW/CPE value of 0.75e1

Verbatim

e0
“A field study with K1 Sunflower was conducted at the Agricultural College and Research Institute. Madurai with three irrigation regimes based on climatological approach coupled with three manurial levels on a clay loam soil”
✓ located verbatim in the source · abstract, characters 0–223

e1
“Irrigation scheduled at IW/CPE value of 0.75 was found optimum”
✓ located verbatim in the source · abstract, characters 225–287

e2
“lesser irrigation was at the expense of yield and higher irrigation was superfluous”
✓ located verbatim in the source · abstract, characters 289–372

Title

Irrigation and Manurial Requirements of Sunflower

SUBRAMANIAN S; SUNDARSINGH S.D; RAMASWAMI K.P Madras Agricultural Journal 1979. doi:10.29321/maj.10.a02925

Other claims from this paper (4)

Intervention effect Irrigation scheduled at an IW/CPE value of 0.75 gave higher sunflower yield than the other irrigation regimes.
Intervention effect Higher irrigation than IW/CPE 0.75 was superfluous and did not increase sunflower yield.
Intervention effect Sunflower at 40:60:40 kg N, PO. KO per hectare gave the highest yield (1246 kg/ha) among the manurial levels and was economical.
Intervention effect Sunflower responded well to fertiliser application.

“yield decrease”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics