Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing density from 12000 to 18000 plants/ha decreased root tuber yield in Amani 4026/16.

Taxon: cassavaManihot esculentat0
Material: Amani 4026/16e0
Treatment: Increase in plant density from 12000 to 18000 plants/hae0
Outcome: root tuber yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Increase in plant density from 12000 to 18000 plants/ha led to a decrease in root tuber yield in Amani 4026/16.”
✓ located verbatim in the source · abstract, characters 615–726

t0
“three cassava varieties”
✓ located verbatim in the source · title, characters 16–39

Title

Growth rates of three cassava varieties (Manihot esculenta Crantz) under varying population densities

B. A. C. Enyi The Journal of Agricultural Science 1973. doi:10.1017/s0021859600058251

Other claims from this paper (19)

Observation Msitu Zanzibar had greater yield than Aipin Valenca and Amani 4026/16.
Observation Aipin Valenca yielded more than Amani 4026/16.
Association Varietal yield differences were associated with bulking rate.
Intervention effect Higher plant density increased tuber yield per hectare, with a greater mean increase in Aipin Valenca than the other two varieties.
Observation Calculated optimum density for maximum yield in Msitu Zanzibar was 6·7 plants/m 2.
Observation Calculated optimum density for maximum yield in Aipin Valenca was 6·4 plants/m 2.
Observation Calculated optimum density for maximum yield in Amani 4026/16 was 5·6 plants/m 2.
Association Spacing effects on tuber yield were associated with bulking rate differences.
Observation Aipin Valenca was usually taller than the other varieties.
Intervention effect Increasing density generally increased plant height.
Observation Final total dry matter per area was greater in Aipin Valenca and Msitu Zanzibar than Amani 4026/16.
Intervention effect Increasing density increased dry matter per area except in Amani 4026/16.
Observation Dry matter per plant was greatest in Msitu Zanzibar, followed by Aipin Valenca and Amani 4026/16.
Intervention effect Dry weight per plant increased as plant density decreased in all three varieties.
Observation Aipin Valenca and Msitu Zanzibar allocated more dry matter to root tubers than Amani 4026/16.
Intervention effect Increasing density generally decreased dry matter allocation to root tubers.
Intervention effect Higher density increased crop growth rate but decreased net assimilation and relative growth rates.
Intervention effect Higher density decreased net assimilation and relative growth rates.
Association Bulking rate was positively related to root tuber yield.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

An 8-fold nutrient decrease diminished reproductive effort by one-half.

Treatment: 8-fold decrease in nutrient levelse0
Outcome: reproductive efforte0
Direction: diminishede0
Value: one- halfe0

Not reportedTaxonComparator

Verbatim

e0
“an 8-fold decrease in nutrient levels diminished reproductive effort by one- half”
✓ located verbatim in the source · abstract, characters 385–466

Title

The effects of density on resource partitioning in Chamaesyce hirta (Euphorbiaceae)

Terry W. Snell; Derek Burch Spring 1975

Other claims from this paper (5)

Association Density and nutrient availability significantly affected resource allocation.
Intervention effect Increased competition reduced allocation to reproductive tissues.
Intervention effect Reduced nutrients reduced allocation to reproductive tissues.
Intervention effect A 32-fold density increase diminished reproductive effort by one-third.
Association Greater root growth appeared inversely related to reproductive effort.

Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

Decreased hyphal density and diameter in darkness may explain suppression of lesion development in cucumber leaves.

Taxon: cucumberCucumis sativust0
Outcome: suppression of lesion developmente5
Qualifier: decrease in hyphal density and diameter in darknesse5

Verbatim

t0
“Cucumber Downy Mildew Fungus”
✓ located verbatim in the source · title, characters 53–81

e5
“It is speculated that such decrease in hyphal density and diameter in darkness may affect the suppression of lesion development by the dark treatment for the infected cucumber leaves”
✓ located verbatim in the source · abstract, characters 791–973

Title

Effect of Light and Darkness on the Hyphal Growth of Cucumber Downy Mildew Fungus

Tadaoki INABA; Toshihiro KAJIWARA Japanese Journal of Phytopathology 1972. doi:10.3186/jjphytopath.38.25

Other claims from this paper (3)

Observation Hyphae and haustoria in infected cucumber tissue increased in number from 2 to 3 days after inoculation in light and in dark.
Intervention effect Hyphae and haustoria were about half as numerous in dark condition as in light condition.
Intervention effect Hyphal diameter was lower in darkness (4.6μ) than in light (5.4μ).

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At the higher density, defoliating alternate plants decreased yield and grain number.

Taxon: MaizeZea mayse0
Treatment: alternate plants were defoliated in the higher densitye1
Outcome: yield and number of grainse1
Direction: decreasee1

Not reportedComparator

Verbatim

e0
“Maize was grown in two densities”
✓ located verbatim in the source · abstract, characters 8–40

e1
“though when alternate plants were defoliated in the higher density there was a substantial decrease in yield and number of grains in defoliated plants, which was largely offset by an increase in adjacent intact plants”
✓ located verbatim in the source · abstract, characters 415–632

Title

Effect of partial defoliation during the vegetative phase on subsequent growth and grain yield of maize

J. C. S. ALLISON; J. H. WILSON; J. H. WILLIAMS Annals of Applied Biology 1975. doi:10.1111/j.1744-7348.1975.tb01652.x

Other claims from this paper (16)

Intervention effect Defoliation decreased grain yield and grain number by 6–17%.
Intervention effect Defoliation on day 51 decreased leaf area by 60–64%.
Intervention effect Subsequent growth in leaf area after defoliation on day 51 was similar to that of untreated plants.
Intervention effect Leaf weight after defoliation on day 51 was nearly as large as in untreated plants.
Intervention effect Increase in stem weight after defoliation was substantially less than in untreated plants.
Intervention effect Untreated and defoliated plots differed by c. 30% in leaf area at flowering.
Intervention effect Increments of dry matter after flowering differed by c. 15% between untreated and defoliated plots.
Observation The fraction of increments entering the grain was c. 90% in both untreated and defoliated plots.
Intervention effect Dry matter increments after flowering with alternate plants defoliated were 93–95 % of those of untreated plots.
Intervention effect Leaf efficiency after flowering was slightly greater in alternate-defoliated plots than in untreated plots.
Intervention effect Alternate plants partly defoliated on day 44 had a subsequent leaf area increase probably 5–16% less than adjacent intact plants.
Observation An increase in adjacent intact plants largely offset the yield and grain number loss at the higher density.
Observation The fraction of the dry matter increment entering the grain was c. 88 % at the small density.
Observation At the large density the fraction entering the grain was 94% in intact plants.
Observation At the large density the fraction entering the grain was 86% in defoliated plants.
Observation Maize plants flowered about 82 days after sowing.

Associationobservedoriginal resultmeasured

Claim · model-written summary

As grass stands grow older, soil density increases as it reaches equilibrium values.

Taxon: grass standse3
Treatment: grass stands grow oldere3
Outcome: soil densitye3
Direction: increasese3
Qualifier: as it reaches equilibrium valuese3

Verbatim

e3
“As grass stands grow older, soil density increases as it reaches equilibrium values, their moisture increases as a result of a decrease in evaporative intensity, and the porosity and porosity of aeration decrease, but the effect of grasses on the physical properties of the soil increases”
✓ located verbatim in the source · abstract, characters 957–1245

Title

HYDROPHYSICAL SOIL FEATURES UNDER MIXED AGE PLANT FORMATION IN RECLAIMED AGROLANDSCAPE

D. А. Ivanov; М. V. Rublyuk Vestnik of the Russian agricultural science 1970. doi:10.30850/vrsn/2019/3/26-29

Other claims from this paper (11)

Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Low temperatures correlated with a significant decrease in pathogen population.

Taxon: Native Forestst0
Interactor: Phytophthora cinnamomiPhytophthora cinnamomie2pathogene0
Outcome: pathogen populatione0
Direction: decreasee0
Setting: Brisbane Rangest1

Verbatim

e0
“both low temperatures and dry soils were correlated with a significant decrease in pathogen population.”
✓ located verbatim in the source · abstract, characters 253–356

t0
“Native Forests”
✓ located verbatim in the source · title, characters 70–84

t1
“Brisbane Ranges”
✓ located verbatim in the source · title, characters 92–107

e2
“Phytophthora cinnamomi”
✓ located verbatim in the source · abstract, characters 24–46

Title

Factors Affecting the Population Density of Phytophthora cinnamomi in Native Forests of the Brisbane Ranges, Victoria.

G Weste; P Ruppin Australian Journal of Botany 1975. doi:10.1071/bt9750077

Other claims from this paper (8)

Association Dry soils correlated with a significant decrease in pathogen population.
Observation Disease extended uphill at 6 . 6 m per year only from recent infection.
Observation Older sites had significantly lower pathogen densities than the new site.
Observation No measurable uphill disease extension occurred from older sites.
Observation Disease immediately and continuously reduced understorey species number.
Observation Disease immediately and continuously reduced understorey ground cover.
Observation Disease reduced long term wood production.
Observation Disease reduced long term tree number.

Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Dry soils correlated with a significant decrease in pathogen population.

Taxon: Native Forestst0
Interactor: Phytophthora cinnamomiPhytophthora cinnamomie2pathogene0
Outcome: pathogen populatione0
Direction: decreasee0
Setting: Brisbane Rangest1

Verbatim

e0
“both low temperatures and dry soils were correlated with a significant decrease in pathogen population.”
✓ located verbatim in the source · abstract, characters 253–356

t0
“Native Forests”
✓ located verbatim in the source · title, characters 70–84

t1
“Brisbane Ranges”
✓ located verbatim in the source · title, characters 92–107

e2
“Phytophthora cinnamomi”
✓ located verbatim in the source · abstract, characters 24–46

Title

Factors Affecting the Population Density of Phytophthora cinnamomi in Native Forests of the Brisbane Ranges, Victoria.

G Weste; P Ruppin Australian Journal of Botany 1975. doi:10.1071/bt9750077

Other claims from this paper (8)

Association Low temperatures correlated with a significant decrease in pathogen population.
Observation Disease extended uphill at 6 . 6 m per year only from recent infection.
Observation Older sites had significantly lower pathogen densities than the new site.
Observation No measurable uphill disease extension occurred from older sites.
Observation Disease immediately and continuously reduced understorey species number.
Observation Disease immediately and continuously reduced understorey ground cover.
Observation Disease reduced long term wood production.
Observation Disease reduced long term tree number.

Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

The major restrictive factors for citrus red mite population increase at high density were reduced longevity and decreased fecundity, owing to interference among individuals and food shortage.

Taxon: citrusCitrust0
Treatment: high densitye2
Interactor: Panonychus citriPanonychus citrit0pest
Outcome: restrictive factors for increasee2
Qualifier: reduction of longevity and decrease of fecundity, owing to interference among the individual and shortage of food at high densitye2

Verbatim

t0
“citrus red mite, Panonychus citri”
✓ located verbatim in the source · title, characters 35–68

e2
“The major restrictive factors for increase were reduction of longevity and decrease of fecundity, owing to interference among the individual and shortage of food at high density”
✓ located verbatim in the source · abstract, characters 371–548

Title

Effect of population desity in the citrus red mite, Panonychus citri (McG.)

Kouichi INOUE Kyushu Plant Protection Research 1971. doi:10.4241/kyubyochu.17.62

Other claims from this paper (4)

Associationobservedoriginal resultnegativesimulated

Claim · model-written summary

Lower spacing density reduced the effect of resistant-plant mixing.

Taxon: plantsViridiplantaee0
Treatment: spacing densitye0
Outcome: effect of mixing of resistant plantse0
Direction: decreasede0

Verbatim

e0
“The effect of mixing of resistant plants is decreased with the decrease of spacing density”
✓ located verbatim in the source · abstract, characters 629–719

Title

A Comparison by Simulation of Disease Dispersal in Pure and Mixed Stands of Susceptible and Resistant Plants

Shigehisa KIYOSAWA Ikushugaku zasshi 1976. doi:10.1270/jsbbs1951.26.137

Other claims from this paper (4)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Selection appeared to decrease leaf size and ear weight.

Taxon: Zea mays L.Zea mayst0
Treatment: selectione0
Outcome: leaf size and ear weighte0
Direction: decreasede0

Verbatim

e0
“Both ear height and top height increased with selection, but leaf size and ear weight appeared to have decreased.”
✓ located verbatim in the source · abstract, characters 1287–1400

t0
“Effects of Population Density upon Agronomic Traits Associated with Genetic Increases in Yield of Zea mays L.1”
✓ located verbatim in the source · title, characters 0–110

Title

Effects of Population Density upon Agronomic Traits Associated with Genetic Increases in Yield of Zea mays L.¹

R. H. Moll; E. J. Kamprath Agronomy Journal 1977. doi:10.2134/agronj1977.00021962006900010021x

Other claims from this paper (7)

Association C5 yielded 27% more than the original strain.
Association C10 yielded 42% more than the original strain.
Association Selection increased prolificacy, ear corn/stover ratio and grain N accumulation.
Association Higher population density increased yield per hectare in improved strains.
Association Strain-by-density interactions were not statistically significant.
Association Selection increased ear height and top height.
Association Percent N in grain and stover decreased.

“decrease in density”

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