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“yield decrease”

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Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

A 30% yield increase was associated with a 3% quality decrease.

Taxon: cornZea mays subsp. mayst0
Outcome: Yield increasese0
Direction: increasese0
Value: 30%e0
Comparator: qualitye0

Verbatim

e0
“Yield increases of 30% were associated with a 3% decrease in quality.”
✓ located verbatim in the source · abstract, characters 441–510

t0
“corn silage production”
✓ located verbatim in the source · abstract, characters 135–157

Title

EFFETS DE LA DENSITE DU PEUPLEMENT ET DE L’APPORT DES ELEMENTS N, P ET K SUR LA PRODUCTION D’ENSILAGE DE MAIS DE MATURITE DIFFERENTE

JEAN GENEST; JEAN-LOUIS DIONNE Canadian Journal of Plant Science 1977. doi:10.4141/cjps77-107

Other claims from this paper (6)

Observation Funk’s G 4252 corn produced 18,325 kg/ha dry matter on average under the stated spacing and nitrogen dose.
Association Nitrogen fertilization, density and hybrid choice were most important for dry matter production.
Observation Optimum yield was predicted at 133,000 pl/ha and 180 kg/ha N.
Intervention effect P and K fertilization produced no significant response.
Observation Annual P at 50 kg/ha increased available soil P.
Observation Soil exchangeable K declined despite annual K at 200 kg/ha.

Observationobservedoriginal resultmixedmeasured

Claim · model-written summary

Additional early hybrids showed yield responses ranging from a 37% increase to a 14% decrease after five-leaf defoliation.

Taxon: CornZea mays subsp. mayst0
Material: early hybridse1
Outcome: Yield responsese0
Value: a 37%, increase to a 14% decreasee0
Setting: Southern Minnesotae1

Verbatim

e0
“Yield responses ranged from a 37%, increase to a 14% decrease.”
✓ located verbatim in the source · abstract, characters 711–773

e1
“Eleven additional early hybrids at one Southern Minnesota location were defoliated at the 5‐leaf stage in 1975.”
✓ located verbatim in the source · abstract, characters 599–710

t0
“Corn”
✓ located verbatim in the source · title, characters 26–30

Title

Early Defoliation Affects Corn Grain Yields¹

R. Kent Crookston; D. R. Hicks Crop Science 1978. doi:10.2135/cropsci1978.0011183x001800030033x

Other claims from this paper (4)

Intervention effect Five-leaf defoliation reduced full-season hybrid yield by 80% over three years.
Intervention effect Five-leaf defoliation increased short-season hybrid yield by 48% over three years.
Observation The 1976 trials produced yield changes from a 32% reduction to a 53% increase.
Mechanism The authors propose that early growth alteration or inhibited leaf function could enhance yield.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Chemical treatments varied widely in phytotoxic reduction of tuber yield.

Taxon: potatoSolanum tuberosume1
Treatment: The chemicalse0
Outcome: yield of tuberse0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“The chemicals varied very widely in their effects on scab, and in their phytotoxicity, as measured by decrease in yield of tubers”
✓ located verbatim in the source · abstract, characters 325–454

e1
“potato plants”
✓ located verbatim in the source · abstract, characters 231–244

Title

Glasshouse tests of quinones, polyhydroxybenzenes and related compounds against potato common scab

A. H. Mcintosh Annals of Applied Biology 1976. doi:10.1111/j.1744-7348.1976.tb00602.x

Other claims from this paper (12)

Intervention effect Chemical treatments varied widely in scab control.
Observation Corresponding 1,4-benzoquinones and hydroquinones had similar effects.
Intervention effect Unsubstituted and phenyl-, chloro-, 2,5- and 2,6-dichloro compounds controlled scab as effectively as quintozene.
Intervention effect Those compounds other than chloro-hydroquinone did not reduce tuber yield.
Intervention effect Chloranil was much less effective against scab.
Intervention effect Chloroneb was much less effective against scab.
Intervention effect Chloroneb decreased tuber yield.
Intervention effect 4-terf-butyl catechol controlled scab better than all tested compounds including quintozene.
Intervention effect 4-terf-butyl catechol at suitable rates did not decrease yield.
Intervention effect Other hydroxybenzenes were almost ineffective against scab.
Intervention effect Some 1,4-naphthaquinones including dichlone were almost ineffective.
Intervention effect Anthraquinones were almost ineffective against scab.

Observationobservedoriginal resultmixedmeasured

Claim · model-written summary

The change in induced variation between M2 and M3 depended on trait and variety.

Taxon: Oryza sativaOryza sativae1
Outcome: size of induced variatione0
Direction: increase or decreasee0

Verbatim

e0
“increase or decrease in the size of induced variation from M2 to M3 varied with the character and the variety”
✓ located verbatim in the source · abstract, characters 634–743

e1
“Oryza sativa”
✓ located verbatim in the source · abstract, characters 106–118

Title

Induced Variation for Yield and its Components in Rice

G.M.V. Prasada Rao; E. A. Siddiq Indian Journal of Genetics and Plant Breeding (The) 1977

Other claims from this paper (2)

Intervention effect Mutagen treated rice populations had significantly increased variation versus controls.
Observation Magnitude and heritable variation differed by genotype, trait, mutagen and generation.

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“yield decrease”

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