Search claims · PlantClaims

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Potato yield decline with Colorado potato beetle larval density followed a two-line model.

Taxon: potatoesSolanum tuberosume0
Interactor: Colorado potato beetleLeptinotarsa decemlineatae0pest
Outcome: yield of potatoese0
Direction: decreasee0

Verbatim

e0
“the relationship between the density of Colorado potato beetle larvae per stalk and a decrease in the yield of potatoes can be described by a model comprised of two straight lines”
✓ located verbatim in the source · abstract, characters 41–220

Title

Density yield relationships and economic injury level model for the Colorado potato beetle larvae on potatoes

G. Mailloux; M. R. Binns; N. J. Bostanian Population Ecology 1991. doi:10.1007/bf02514577

Other claims from this paper (2)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Weevil attack decreased field bean yield by up to 28%.

Taxon: Vicia fabaVicia fabat0
Treatment: Sitona lineatust0
Interactor: Sitona lineatusSitona lineatust0pest
Outcome: yielde0
Direction: decreasee0
Value: 28%e0

Not reportedComparator

Verbatim

e0
“A decrease in yield up to 28% was recorded due to a reduction in the number of pods per plant”
✓ located verbatim in the source · abstract, characters 162–255

t0
“Vicia faba in relation to infestation levels of Sitona lineatus”
✓ located verbatim in the source · title, characters 19–82

Title

Yield responses of Vicia faba in relation to infestation levels of Sitona lineatus L. (Col., Curculionidae)

B. S. Nielsen Journal of Applied Entomology 1990. doi:10.1111/j.1439-0418.1990.tb00138.x

Other claims from this paper (5)

Intervention effect Weevil attack reduced pods per plant.
Intervention effect Seed number per pod and individual seed weight were unaffected.
Association Damage had a nonmonotonic relationship with attack level.
Association Larval numbers before hatching were independent of adult attack level.
Association Attack level correlated significantly with leaf margin feeding notches.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Authors attribute short-rotation yield decline partly to increased fungal disease.

Taxon: oil‐seed rapeBrassica napuse0
Treatment: short rotationse0
Outcome: yield decreasee0
Qualifier: increase in the incidence of fungal diseasese0

Verbatim

e0
“we argue that an increase in the incidence of fungal diseases has considerably contributed to the yield decrease of oil‐seed rape in short rotations.”
✓ located verbatim in the source · abstract, characters 1644–1793

Title

Effect of Different Preceding Crops and Crop Rotations on Yield of Winter Oil‐seed Rape (Brassica napus L.)

O. Christen; K. Sieling Journal of Agronomy and Crop Science 1995. doi:10.1111/j.1439-037x.1995.tb01112.x

Other claims from this paper (10)

Observation Grain yields varied from 2.71 to 3.99 t ha −1 across six years.
Intervention effect Husbandry treatments had a smaller, nonsignificant yield effect.
Intervention effect Fungicide increased average yield by 0.2 t ha −1.
Intervention effect Rape directly following peas had the highest grain yields of 3.77 or 3.65 t ha −1.
Intervention effect Rape grown after rape yielded 3.15 to 3.33 tha −1, described as low.
Intervention effect Rape monoculture produced the lowest grain yield of 3.13 t ha −1.
Intervention effect Rape after a cereal yielded 3.22 to 3.44 tha −1 across two to four course rotations.
Association Yield increased with rotation length and the break between rape crops.
Intervention effect Previous cropping affected seed number per square metre.
Intervention effect Thousand-seed weight did not respond to cropping history.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At Merredin nitrogen decreased yield in 1984 and 1985.

Taxon: wheatTriticum aestivumt0
Treatment: N fertilisere1
Outcome: yielde0
Direction: decreasee0
Qualifier: 1984 and 1985e0
Setting: Merredine0

Not reportedComparator

Verbatim

e0
“At Merredin, there was no response in 1980, a yield decrease in 1984 and 1985, and an increase in all other years.”
✓ located verbatim in the source · abstract, characters 545–659

e1
“There were significant grain yield increases in response to N fertiliser in all years at Nabawa.”
✓ located verbatim in the source · abstract, characters 324–420

t0
“wheat”
✓ located verbatim in the source · title, characters 86–91

Title

Effect of management of previous cereal stubble on nitrogen fertiliser requirement of wheat

MG Mason Australian Journal of Experimental Agriculture 1992. doi:10.1071/ea9920355

Other claims from this paper (19)

Intervention effect Nitrogen fertilizer significantly increased grain yield at Nabawa in all years.
Intervention effect At Wongan Hills nitrogen caused no yield response in 1978 and 1985.
Intervention effect At Wongan Hills nitrogen reduced yield in 1979.
Intervention effect At Wongan Hills nitrogen increased yield in all other years.
Intervention effect At Merredin nitrogen caused no response in 1980.
Intervention effect At Merredin nitrogen increased yield in all other years.
Observation Grain yield responses were small in some years at Wongan Hills and Merredin.
Intervention effect Overall stubble treatment effects were significant only at Nabawa in 1978 and 1985.
Intervention effect Stubble treatment interacted significantly with nitrogen rate at Wongan Hills in 1980 and 1981 and Merredin in 1981, 1983 and 1985.
Intervention effect Nitrogen response was higher with incorporated stubble than burnt stubble.
Intervention effect Optimum economic nitrogen rates tended to be higher with incorporated stubble, with small differences.
Intervention effect Fallow significantly increased overall yield at Merredin in 1979 and 1983.
Intervention effect Fallow interacted significantly with nitrogen rate in all comparison years except 1987.
Intervention effect Non-fallow treatments had greater nitrogen responses.
Intervention effect Stubble incorporation increased soil organic carbon relative to burning.
Intervention effect Fallowing lowered soil organic carbon.
Observation Soil organic carbon declined over time, especially with fallowing.
Observation Soil total nitrogen followed the organic carbon patterns, but less markedly.
Recommendation At 1-3 t/ha residues in continuous wheat in Western Australia's winter rainfall environment, stubble treatment is unlikely to determine nitrogen rate substantially.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Arsenic exposure decreased plant growth parameters of tomato.

Taxon: tomatoSolanum lycopersicume0
Material: Marmandee0
Treatment: Arsenic exposuree6
Outcome: plant growth parameterse6
Direction: decreasee6

Not reportedComparator

Verbatim

e0
“tomato (Lycopersicum esculentum Mill, cultivar Marmande) plants”
✓ located verbatim in the source · abstract, characters 25–88

e6
“Arsenic exposure resulted in a drastic decrease in plant growth parameters (e.g., maximum decrease of 76.8% in leaf fresh weight) and in tomato fruit yield (maximum reduction of 79.6%)”
✓ located verbatim in the source · abstract, characters 1005–1189

Title

Arsenic uptake, distribution, and accumulation in tomato plants: Effect of arsenite on plant growth and yield

A. Carbonell Barrachina; F. Burlo Carbonell; J. Mataix Beneyto Journal of Plant Nutrition 1995. doi:10.1080/01904169509364975

Other claims from this paper (9)

Intervention effect Arsenite was highly toxic to tomato roots.
Association Arsenic concentrations in stems, leaves and fruit were correlated with the As level in the nutrient solution.
Association Arsenic uptake depended on the As concentration in the solution.
Association Root As content increased as the time of treatment increased.
Intervention effect The 10 mg/L As level significantly decreased upward transport of As in tomato.
Intervention effect The 10 mg/L As level damaged tomato root membranes.
Intervention effect Arsenic exposure decreased tomato leaf fresh weight by a maximum of 76.8%.
Intervention effect Arsenic exposure reduced tomato fruit yield by a maximum of 79.6%.
Observation Arsenic concentration in tomato fruits was not toxic or harmful for human consumption.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Water and light stresses at flowering decreased pigeonpea seed yield by 28 and 42 per cent.

Taxon: pigeonpeaCajanus cajane0
Treatment: water and light stressese3
Outcome: seed yielde3
Direction: decreasee3
Value: 28 and 42 per cente3

Not reportedComparator

Verbatim

e0
“yield of pigeonpea short duration cv. ICPL 288”
✓ located verbatim in the source · abstract, characters 152–198

e3
“with concomitant decrease of 28 and 42 per cent seed yield with water and light stresses respectively”
✓ located verbatim in the source · abstract, characters 267–368

Title

EFFECT OF WATER AND LIGHT STRESS AND FOLIAR APPLICATION OF AUXINS ON FLOWER ABSCISSION AND SEED YIELD OF PIGEONPEA

PRAKASA RAO J.S; NARAYANAN A Madras Agricultural Journal 1997. doi:10.29321/maj.10.a00851

Other claims from this paper (4)

Intervention effect Water and light stresses at flowering significantly increased flower drop by 5 and 8 per cent.
Intervention effect Foliar NAA 20 ppm enhanced pods per plant of pigeonpea.
Intervention effect Foliar NAA 20 ppm reduced flower drop by 15 per cent in pigeonpea.
Intervention effect Foliar NAA 20 ppm increased pigeonpea seed yield by 23% over control plants.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The injury threshold corresponds to a decrease to 81.20% of the photosynthetic rate under control without pest infestation.

Taxon: cucumberCucumis sativuse0
Treatment: pest infestationse1
Interactor: Trialeurodes vaporariorumTrialeurodes vaporariorume0pest
Outcome: photosynthetic ratee1
Direction: decreasee1
Value: 81.20%e1
Comparator: control (no pest infestations)e1

Verbatim

e0
“Influence of greenhouse whiteflies ( Trialeurodes vaporariorum Westwood) on cucumber plants”
✓ located verbatim in the source · abstract, characters 9–100

e1
“a decrease to 81.20% of the photosynthetic rate under control (no pest infestations)”
✓ located verbatim in the source · abstract, characters 688–772

Title

Functional relationship between pest abundance, plant physiology and yield as exemplified by the greenhouse whitefly, Trialeurodes vaporariorum Westw. (Hom., Aleyrodidae)

Xu Rumei; Zhang Liying Journal of Applied Entomology 1991. doi:10.1111/j.1439-0418.1991.tb01070.x

Other claims from this paper (2)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Applied phosphorus decreased small and very small carrot yield.

Taxon: carrotsDaucus carotae0
Treatment: applied phosphorust0
Outcome: yield of small (10-25 mm diameter) and very small carrots (<I0 mm diameter)e0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“a decrease in the yield of small (10-25 mm diameter) and very small carrots (<I0 mm diameter)”
✓ located verbatim in the source · abstract, characters 649–742

t0
“applied phosphorus”
✓ located verbatim in the source · title, characters 43–61

Title

Response of carrots ( Daucus carota L.) to applied phosphorus leaching on a Karrakatta sand, under two irrigation regimes

IR McPharlin; PM Aylmore; RC Jeffery Australian Journal of Experimental Agriculture 1992. doi:10.1071/ea9920225

Other claims from this paper (14)

Intervention effect Irrigation frequency did not significantly change carrot response to phosphorus.
Observation Carrot yield reached 99% of its maximum at the stated phosphorus rate.
Observation The phosphorus rate needed for 95% of maximum carrot yield was 102 ¦ 10 kg/ha.
Intervention effect Applied phosphorus increased medium and large carrot yield.
Intervention effect Applied phosphorus increased carrot root to shoot ratios.
Observation Rejects remained 9% of total yield across phosphorus rates.
Association Leaf phosphorus concentration of 0.38 ¦ 0.02% at midgrowth was required for 99% maximum yield.
Method / resource Visual symptoms were not useful for diagnosis of carrot phosphorus deficiency.
Association Phosphorus uptake by carrot roots and shoots increased with application rate.
Association Phosphorus uptake efficiency decreased as phosphorus rate increased.
Observation The crop took up 18% of applied phosphorus at the rate needed for maximum yield and profit.
Observation Soil phosphorus leaching below 30 cm occurred only at the highest application rate.
Intervention effect Irrigation frequency did not affect phosphorus leaching.
Observation Karrakatta sands had moderate phosphorus retention capacity and low water pollution risk.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Reduced plant size probably reduced photosynthetic capacity.

Taxon: CornZea mays subsp. mayst0
Outcome: photosynthetic capacitye0
Qualifier: decrease in plant sizee0

Verbatim

e0
“The decrease in yield due to selection showed close association with decrease in plant size ( r = 0.98**, significant at P = 0.01), which probably reduced photosynthetic capacity.”
✓ located verbatim in the source · abstract, characters 1228–1407

t0
“Corn”
✓ located verbatim in the source · title, characters 33–37

Title

Selection for Early Flowering in Corn: Three Adapted Synthetics

A. F. Troyer Crop Science 1990. doi:10.2135/cropsci1990.0011183x003000040028x

Other claims from this paper (11)

Intervention effect Four cycles of early flowering selection gave 0.8 d less flowering.
Intervention effect Four cycles of early flowering selection gave 10 g kg ‐1 less grain moisture.
Intervention effect Four cycles of early flowering selection gave 4.0 cm less plant height.
Intervention effect Four cycles of early flowering selection gave 2.7 cm less ear height.
Intervention effect Four cycles of early flowering selection gave 0.2 d less silk delay.
Intervention effect Four cycles of early flowering selection gave 0.15 Mg ha‐1 (3%) less yield.
Intervention effect Four cycles of early flowering selection gave 4% more broken stalks.
Association The selection associated decreases in yield and plant size were strongly correlated.
Association Later flowering synthetics respond more to early flowering selection than earlier flowering synthetics.
Association Longer, cooler days at flowering in shorter season areas favor early flowering selection.
Recommendation Early flowering selection can help move diverse germplasm into shorter season growing areas.

Intervention effectobservedoriginal resultnegativesimulated

Claim · model-written summary

Projected climate change decreased simulated wheat yield in the southern Great Plains.

Taxon: wheatTriticum aestivume0
Treatment: Projected climate changese0
Outcome: wheat and corn yieldse0
Direction: decreasee0
Setting: southern Great Plainse1

Not reportedComparator

Verbatim

e0
“Projected climate changes cause simulated wheat and corn yields to decrease in the study area”
✓ located verbatim in the source · abstract, characters 212–305

e1
“for the southern Great Plains”
✓ located verbatim in the source · abstract, characters 181–210

Title

CROP RESPONSE TO CLIMATE CHANGE IN THE SOUTHERN GREAT PLAINS: A SIMULATION STUDY

Cynthia Rosenzweig The Professional Geographer 1990. doi:10.1111/j.0033-0124.1990.00020.x

Other claims from this paper (3)

“yield decrease”

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