Search claims · PlantClaims

Recommendationauthor interpretationoriginal resultnegativebasis n/a

Claim · model-written summary

The authors suggest ethephon may decrease grain yield without lodging.

Taxon: maizeZea mayst0
Outcome: decrease grain yielde0
Qualifier: in the absence of lodginge0

Verbatim

e0
“may decrease grain yield in the absence of lodging because of its potential deleterious effect on kernel number and growth”
✓ located verbatim in the source · abstract, characters 1708–1830

t0
“Maize”
✓ located verbatim in the source · title, characters 39–44

Title

Growth, Yield, and Yield Components of Maize as Influenced by Ethephon

W. J. Cox; H. F. Andrade Crop Science 1988. doi:10.2135/cropsci1988.0011183x002800030023x

Other claims from this paper (11)

Intervention effect Ethephon did not affect phytomass, NAR, or CGR in the dry 1985 season.
Intervention effect Ethephon reduced phytomass, NAR, and CGR in the wet 1986 season.
Association Plant density and hybrid did not influence growth response to ethephon.
Intervention effect Ethephon reduced lodging by 64%.
Intervention effect Ethephon had no overall effect on grain yield.
Intervention effect Ethephon increased Cornell 281 grain yield from 7.78 to 8.24 Mg ha −1.
Intervention effect Ethephon decreased Pioneer 3901 grain yield from 9.63 to 8.56 Mg ha −1.
Intervention effect Ethephon increased Cornell 281 kernel weight from 263 to 266 mg.
Intervention effect Ethephon decreased Pioneer 3901 kernel weight from 282 to 264 mg.
Intervention effect Ethephon significantly decreased kernels per ear in both hybrids from 494 to 474.
Recommendation The authors suggest ethephon may enhance maize yield where lodging is a problem.

Intervention effectauthor interpretationoriginal resultnegativeprojected

Claim · model-written summary

Direct selection for increased TA was expected to decrease tobacco yield by 1.9% per cycle.

Taxon: tobaccoNicotiana tabacume0
Treatment: direct selection for increased TAe3
Outcome: yielde4
Direction: decreasee4
Value: 1.9% per cyclee4

Not reportedComparator

Verbatim

e0
“A negative genetic correlation between yield and total alkaloids (TA) in tobacco, Nicotiana tabacum L., populations causes decreases in yield when selecting for increased TA”
✓ located verbatim in the source · abstract, characters 0–173

e3
“The increase in TA was about 58% of that expected from direct selection for increased TA”
✓ located verbatim in the source · abstract, characters 519–607

e4
“there would be an expected decrease in yield of 1.9% per cycle”
✓ located verbatim in the source · abstract, characters 615–677

Title

Restricted Index Selection for Total Alkaloids and Yield in Tobacco

D. F. Matzinger; E. A. Wernsman; W. W. Weeks Crop Science 1989. doi:10.2135/cropsci1989.0011183x002900010018x

Other claims from this paper (6)

Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

The decrease in cabbage dry weight and head yield under low light is attributed to lower sugar content and lower 14CO2 assimilation.

Taxon: cabbageBrassica oleracea var. capitatat0
Outcome: plant dry weight and the cabbage-head yielde3
Qualifier: decrease in the sugar content and in the rate of 14CO2 assimilatione3

Verbatim

t0
“cabbage-head formation”
✓ located verbatim in the source · title, characters 30–52

e3
“As the light intensity decreased, so the plant dry weight and the cabbage-head yield decreased, resulting from a decrease in the sugar content and in the rate of 14CO2 assimilation”
✓ located verbatim in the source · abstract, characters 576–756

Title

The role of macronutrients in cabbage-head formation

Tetsuo Hara; Yoji Sonoda Soil Science & Plant Nutrition 1981. doi:10.1080/00380768.1981.10431270

Other claims from this paper (11)

Intervention effect Increasing nitrogen supply from 5 to 50 ppm N increased cabbage plant dry weight.
Intervention effect Nitrogen supply at 500 ppm N decreased cabbage plant dry weight.
Intervention effect Cabbage grown at 50 ppm N had the highest sugar content.
Intervention effect Cabbage grown at 50 ppm N had the highest rate of 14CO2 assimilation.
Mechanism Growth at 50 ppm N explains efficient cabbage-head development through the highest sugar content.
Intervention effect Decreasing light intensity decreased cabbage plant dry weight and cabbage-head yield.
Intervention effect Low light intensity made the 15NO3-N uptake by cabbage smaller than high light intensity.
Intervention effect Low light impaired incorporation of 15N into the 80% ethanol-insoluble fraction of the cabbage head.
Association The later the growth stage at which 14CO2 was assimilated, the greater the 14C-retention percentage at harvest.
Association The later the growth stage at which 14CO2 was assimilated, the greater the distribution of 14C into the cabbage head.
Association The 14C-retention percentage decreased with increased nitrogen supply or decreased light intensity in cabbage.

Associationobservedreview summarynegativebasis n/a

Claim · model-written summary

Oil content of sunflower decreases as nitrogen fertilizer raises yield.

Taxon: SunflowerHelianthus annuust0
Treatment: nitrogen fertilizere2
Outcome: oil contentse2
Direction: decreasee2

Verbatim

t0
“Sunflower performance”
✓ located verbatim in the source · title, characters 0–21

e2
“generally as yields increase in response to nitrogen fertilizer there is a corresponding decrease in oil contents”
✓ located verbatim in the source · abstract, characters 665–778

Title

Sunflower performance — Agronomic aspects

Alvin J. Jarvi Journal of the American Oil Chemists Society 1983. doi:10.1007/bf02702090

Other claims from this paper (10)

Observation Plant populations of 35,000 to 60,000 per hectare are used in the major sunflower production areas.
Observation Sunflower planting depth ranges from 3 cm to 10 cm depending on soil moisture.
Association Sunflower yields increase in response to nitrogen fertilizer.
Recommendation Adequate weed control is very important during the first three weeks after sunflower emergence.
Observation Sunflower is frost-tolerant at the seedling stage and after flowering.
Observation Sunflower is most susceptible to frost during the period of rapid growth and flowering.
Observation Sunflower is not highly drought-resistant.
Observation Sunflower effectively utilizes soil moisture to a depth of over 2 m.
Association Sunflower performance is influenced by cultivar, environment and their interaction.
Recommendation Good agronomic practices lead to optimum use of the sunflower growing season.

Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

Genetic correlations between head size and the curding habit of cauliflower probably explain the yield decrease in the broccoli population.

Taxon: broccoliBrassica oleracea var. italicat0
Outcome: yielde7
Qualifier: genetic correlations between head size and the curding habit of cauliflowere7

Verbatim

t0
“breeding of broccoli”
✓ located verbatim in the source · title, characters 36–56

e7
“There were improvements in quality between the F2 and F4, but yield had decreased, probably because of genetic correlations between head size and the curding habit of cauliflower”
✓ located verbatim in the source · abstract, characters 932–1110

Title

The effects of plant spacing on the breeding of broccoli from an expanded genetic base

P. Crisp; A. R. Gray; S. M. Angell; et al. Journal of Horticultural Science 1986. doi:10.1080/14620316.1986.11515692

Other claims from this paper (7)

Intervention effect Most quality-affecting characters of broccoli sub-populations were unaffected by spacing.
Intervention effect Yield-affecting characters of broccoli showed linear and quadratic responses to spacing.
Association Some yield characters of broccoli differed linearly in their response to spacing among sub-populations.
Recommendation Cultivars of broccoli might be bred that are adapted to particular spacings.
Observation Genetic correlations between characters in broccoli breeding material were generally advantageous.
Intervention effect Quality of the broccoli breeding population improved between the F2 and F4 generations of selection.
Intervention effect Yield of the broccoli breeding population decreased between the F2 and F4 generations of selection.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Death of stem apices and a decrease in the rate of node formation are mechanisms regulating the duration and intensity of alfalfa flowering and pod set.

Taxon: alfalfaMedicago sativae0
Organ / stage: stem apicese7
Outcome: duration and intensity of flowering and pod sete7
Qualifier: decrease in the rate of node formatione7

Verbatim

e0
“Seed yields of alfalfa ( Medicago sativa L.)”
✓ located verbatim in the source · abstract, characters 9–53

e7
“Death of stem apices and a decrease in the rate of node formation were identified as mechanisms which regulate the duration and intensity of flowering and pod set”
✓ located verbatim in the source · abstract, characters 1626–1788

Title

Irrigation Regime and Honeybee Activity as Related to Seed Yield in Alfalfa¹

A. Goldman; A. Dovrat Agronomy Journal 1980. doi:10.2134/agronj1980.00021962007200060023x

Other claims from this paper (9)

“yield decrease”

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