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“yield decrease”

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Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Ethephon changed husked yield from an 8% increase to an 18% decrease across rates, timings and seasons.

Taxon: sweet corne1
Treatment: ethephone0
Outcome: husked yielde0
Value: 8% increase in yield to an 18% decreasee0

Not reportedComparatorDirection

Verbatim

e0
“Effects of ethephon on husked yield varied from an 8% increase in yield to an 18% decrease, depending on rate, timing, and season”
✓ located verbatim in the source · abstract, characters 582–711

e1
“sweet corn (Zea mays L.)”
✓ located verbatim in the source · abstract, characters 165–189

Title

Ethephon and Mechanical Topping Influence Growth, Yield, and Lodging of Sweet Corn

A.D. Bratsch; H.J. Mack HortScience 1990. doi:10.21273/hortsci.25.3.291

Other claims from this paper (8)

Intervention effect Ethephon reduced plant height by 12% to 26%.
Intervention effect Application timing determined where internode lengths fell.
Intervention effect Ethephon at tassel elongation reduced ear height more than applications one or two weeks later.
Intervention effect Topping reduced yield in one of four experiments.
Intervention effect Ethephon at 0.28 kg·ha -1 reduced ear length in two of four experiments.
Intervention effect After a helicopter fly-over, 66% of topped plants lodged compared with 87% untreated.
Observation Lodging averaged 51% under ethephon at 0.28 kg·ha -1 at tassel elongation in experiments 2–4.
Association Lodging tended to be least with ethephon treatments giving the largest plant or ear height reduction.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Bacterial inoculation changed maize seedling average yield from a 50% decrease to a 70% increase versus controls.

Taxon: maizeZea mayse0
Treatment: bacterial inoculatione0
Interactor: bacteriale0symbiont
Outcome: average yielde0
Value: 50% decrease to a 70% increasee0
Comparator: controlse0

Not reportedDirection

Verbatim

e0
“In vitro bacterial inoculation on maize seedlings resulted in changes of average yield ranging from a 50% decrease to a 70% increase over controls.”
✓ located verbatim in the source · abstract, characters 340–487

Title

Root colonization efficiency, plant-growth-promoting activity and potentially related properties in plant-associated bacteria

Gandi Forlani; Manuela Branzoni; Roberta Pastorelli; et al. Institutional Research Information System University of Ferrara (University of Ferrara) 1995

Other claims from this paper (7)

Observation Most isolates grew on nutrients exuded by maize and wheat roots.
Association Bacterial colonization ability varied greatly by crop.
Observation Significant nitrogen fixation was detectable only in Azotobacter and Azospirillum isolates.
Observation Siderophore production was restricted to Enterobacter.
Observation Pectinase production was restricted to Bacillus.
Observation Indoleacetic acid synthesis was more widespread.
Intervention effect Root exudates did not stimulate the measured bacterial activities.

Recommendationauthor interpretationoriginal resultmixedbasis n/a

Claim · model-written summary

The authors conclude an arsenical herbicide generally increases sicklepod control but may delay cotton maturity and decrease yield.

Taxon: cottonGossypium hirsutume0
Interactor: sicklepode0weed
Outcome: addition of an arsenical herbicide to pyrithiobace0
Qualifier: potential to delay maturity and decrease cotton yielde0

Verbatim

e0
“Where sicklepod is present, the addition of an arsenical herbicide to pyrithiobac will generally increase control but has the potential to delay maturity and decrease cotton yield equal to the arsenical herbicide applied alone.”
✓ located verbatim in the source · abstract, characters 1113–1340

Title

Effect of Pyrithiobac, MSMA, and DSMA on Cotton (Gossypium hirsutumL.) Growth and Weed Control

C. Dale Monks; Michael G. Patterson; John W. Wilcut; et al. Weed Technology 1999. doi:10.1017/s0890037x00044821

Other claims from this paper (8)

Intervention effect Cotton tolerated postemergence pyrithiobac.
Intervention effect Adding MSMA to pyrithiobac injured cotton similarly to MSMA alone.
Intervention effect The herbicide treatments did not alter height to node ratio, node production or square retention.
Intervention effect Cotton maturity under MSMA ranged from no effect to delay.
Intervention effect Cotton maturity under DSMA ranged from no effect to delay.
Intervention effect Adding DSMA increased Florida beggarweed control in 1995 but not 1994.
Intervention effect Adding DSMA increased common cocklebur control in 1995 but not 1994.
Intervention effect Adding DSMA increased sicklepod control across three Alabama site years.

Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

Reduced vegetative growth did not necessarily produce a comparable seed yield reduction.

Taxon: SoybeanGlycine maxt0
Organ / stage: vegetative growthe0
Outcome: seed yielde0

Not reportedDirection

Verbatim

e0
“A decrease in vegetative growth did not necessarily result in a comparable decrease in seed yield.”
✓ located verbatim in the source · abstract, characters 1843–1941

t0
“Soybean”
✓ located verbatim in the source · title, characters 0–7

Title

Soybean Growth and Yield as Affected by Surface and Suboil Compaction

J. F. Johnson; W. B. Voorhees; W. W. Nelson; et al. Agronomy Journal 1990. doi:10.2134/agronj1990.00021962008200050027x

Other claims from this paper (9)

Intervention effect Surface compaction reduced yield by 15% overall on Ves sites.
Intervention effect Surface compaction reduced Ves yield by up to 27% in a single year.
Intervention effect On the Webster site, surface compaction generally reduced yield in a wet year.
Intervention effect On the Webster site, surface compaction generally raised yield in a dry year.
Intervention effect The 18 Mg subsoil compaction treatment reduced plant height and leaf area index at Webster each year.
Intervention effect The 18 Mg subsoil compaction treatment tended to reduce yield at Webster.
Observation The 18 Mg load had an inconsistent response on Ves.
Intervention effect The 9 Mg treatment significantly increased yield in five of fourteen location-years.
Intervention effect Annual surface compaction affected growth and yield more than one-time subsoil compaction.

Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

Reduced adjusted solute potential was not consistently associated with grain yield response.

Taxon: oatAvena sativat0
Treatment: decrease in adjusted solute potentiale0
Outcome: grain yield responsee0
Qualifier: not consistently associatede0

Not reportedDirection

Verbatim

e0
“The decrease in adjusted solute potential was not consistently associated with a grain yield response.”
✓ located verbatim in the source · abstract, characters 1236–1338

t0
“Oat”
✓ located verbatim in the source · title, characters 0–3

Title

Oat Cultivar Response to Potassium Chloride on Soils Testing High in Potassium

P. E. Gaspar; D. L. Reeves; T. E. Schumacher; et al. Agronomy Journal 1994. doi:10.2134/agronj1994.00021962008600020009x

Other claims from this paper (7)

Intervention effect KCl increased oat grain yield by 4% at two locations.
Observation The yield gain was too small to be profitable.
Intervention effect KCl increased thousand-kernel weight by 4–7% where yield responded.
Intervention effect KCl did not affect crown rust infection.
Intervention effect KCl did not affect protein or oil content.
Intervention effect KCl did not affect relative water content or stomatal conductance.
Intervention effect KCl lowered adjusted solute potential by 0.07 MPa at boot stage at two sites.

Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

An increase in B/P was almost offset by a decrease in DFF, DFB or both.

Taxon: Egyptian cottonGossypium barbadenset0
Material: Giza 83 X Giza 75t0
Outcome: B/pe0
Direction: increasee0

Verbatim

e0
“An increase in B/p.An increase B/p was almost offset by a decrease of either DFF, DFB or both”
✓ located verbatim in the source · abstract, characters 1109–1203

t0
“EGYPTIAN COTTON CROSS GIZA 83 X GIZA 75”
✓ located verbatim in the source · title, characters 104–143

Title

PATH COEFFICIENT ANALYSIS FOR LINT YIELD AND ITS CONTRIBUTING VARIABLES IN F2 AND F3 GENERATIONS OF THE EGYPTIAN COTTON CROSS GIZA 83 X GIZA 75

MOHAMED M. AWAAD Egyptian Journal of Agricultural Research 1998. doi:10.21608/ejar.1998.363489

Other claims from this paper (7)

Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

Overall fruit yield stabilized at high cane density and tended to decline above an optimum density.

Taxon: red RaspberriesRubus idaeust0
Treatment: high cane densitye0
Outcome: overall fruit yielde0
Direction: decreasee0
Qualifier: after an optimum number of canes per meter row was reachede0

Verbatim

e0
“The increase in overall fruit yield stabilised at high cane density and there was a tendency for it to decrease after an optimum number of canes per meter row was reached.”
✓ located verbatim in the source · abstract, characters 2141–2312

t0
“red Raspberries”
✓ located verbatim in the source · title, characters 112–127

Title

Effect of nitrogen and cane density on cane architecture, fruit and fruit yield components in primocane bearing red Raspberries

Joseph N. Wolukau Mspace (University of Manitoba) 1992

Other claims from this paper (13)

Intervention effect High nitrogen enlarged cane diameter and increased the number and basal length of laterals.
Intervention effect High row cane density enlarged cane diameter and increased the number and basal length of laterals.
Observation At high cane density, lateral length along the cane followed a curvilinear pattern.
Association Lateral branch angle increased with cane density.
Intervention effect High nitrogen increased the number of laterals and proportion of fruiting cane.
Intervention effect Low cane density increased the number of laterals and proportion of fruiting cane.
Intervention effect High nitrogen increased cane height.
Association Row cane density decreased cane height.
Intervention effect Nitrogen increased fruits per lateral and cane, fruit size, and yield per cane.
Intervention effect Low cane density increased fruits per lateral and cane, fruit size, and yield per cane.
Intervention effect Nitrogen increased overall fruit yield as much as threefold on sandy soils, with less effect on clay-loam soils.
Association Overall fruit yield increased with cane density, but the increase was not significant.
Intervention effect Nitrogen application significantly increased fruit yields.

Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

Reduced legume control did not consistently lower corn or cotton yield except under glyphosate alone.

Taxon: Corn (Zea mays) and Cotton (Gossypium hirsutum)Gossypium hirsutumZea mayst0
Treatment: reduced legume controle0
Interactor: hairy vetchVicia villosae0weed
Outcome: corn or cotton yielde0
Direction: did not consistently decreasee0

Verbatim

e0
“Except for poor control of hairy vetch and crimson clover by glyphosate alone, reduced legume control did not consistently decrease corn or cotton yield”
✓ located verbatim in the source · abstract, characters 514–666

t0
“Corn (Zea mays) and Cotton (Gossypium hirsutum)”
✓ located verbatim in the source · title, characters 41–88

Title

Control of Legume Cover Crops in No-Till Corn (Zea mays) and Cotton (Gossypium hirsutum)

Randall H. White; A. Douglas Worsham Weed Technology 1990. doi:10.1017/s0890037x00024982

Other claims from this paper (8)

Intervention effect Paraquat treatments and cyanazine alone controlled clover best in both crops.
Intervention effect All treatments except glyphosate alone controlled at least 89% of hairy vetch in corn.
Intervention effect In cotton, 2,4-D and cyanazine alone or with glyphosate controlled more than 89% of hairy vetch.
Intervention effect Glyphosate alone reduced weed control in crimson clover.
Intervention effect Other herbicide treatments gave similar weed control.
Association Legume-control effectiveness did not affect corn or cotton nitrogen concentration.
Association Corn stand, height and yield were greater in hairy vetch than crimson clover.
Association Seed cotton yield did not differ between vetch and clover.

Observationobservedoriginal resultmixedmeasured

Claim · model-written summary

Fruit weight and number per plant decreased as waterlogging depth and duration increased, while mean fruit weight increased.

Taxon: TomatoSolanum lycopersicumt0
Outcome: Weight and number of fruit per plante0
Direction: decreasee0

Verbatim

e0
“Weight and number of fruit per plant displayed gradual decrease as the depth and hours of water-logging became increased. Average weight of a fruit became increased”
✓ located verbatim in the source · abstract, characters 2275–2439

t0
“Tomato”
✓ located verbatim in the source · title, characters 104–110

Title

Effects of Depth and Duration of Water-logging on Growth and Yield at Germination and Seedling Stage in Tomato(Lycopersicon esculentum Mill.)

Ja-Ock Guh; Sang-Eun Roh; Yong In Kuk; et al. Korean Journal of Environmental Agriculture 1996

Other claims from this paper (19)

Observation Germination failure occurred after 25 to 27 hours of waterlogging at 0 to 5 cm.
Observation At germination, plant height recovered within 24 hours regardless of depth.
Association Leaf recovery time shortened as waterlogging depth increased.
Observation Shoot fresh weight fell more sharply than root fresh weight but recovered within 24 hours.
Association Waterlogging depth correlated significantly with height, leaf number, fresh weight and germination rate.
Observation At seedling stage, height recovered within 24 hours at 0 cm depth.
Observation At deeper waterlogging levels, seedling height significantly decreased regardless of duration.
Observation Seedling leaf number recovered up to 120 hours at 0 cm depth.
Observation Seedling leaf number recovered up to 24 hours at 5 cm depth.
Observation At deeper levels leaf number significantly decreased after more than 6 hours.
Observation Shoot growth followed the trends of height and leaf number.
Intervention effect Longest root length at 0 cm waterlogging was maintained at 80% of control.
Observation Root length was not maintained after 120 hours at depths of 5 cm or greater.
Observation Waterlogging deeper than 0 cm markedly reduced root activity.
Observation Respiration markedly decreased at 5 cm waterlogging depth.
Association Photosynthesis decreased linearly with waterlogging depth.
Observation Chlorophyll content decreased gradually through 48 hours and sharply through 120 hours.
Association Disease increased with waterlogging depth and duration.
Observation Insecticide prevented disease, while fertilization had no effect.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Adding side shoots at low density gave about 5% less yield than high density, from 33% fewer plants.

Taxon: tomatoesSolanum lycopersicume0
Treatment: The addition of side shoots at low densitye7
Outcome: yielde6
Direction: decreaseinferrede6
Value: 5%e6
Qualifier: 33% fewer plantse6
Comparator: high density treatmente6

Verbatim

e0
“the yield of glasshouse-grown tomatoes”
✓ located verbatim in the source · abstract, characters 41–79

e7
“The addition of side shoots at low density produced fruit of more uniform size throughout the year and the yield of grade D fruit was almost as high as from plants grown at high density throughout”
✓ located verbatim in the source · abstract, characters 1491–1687

e6
“These benefits were accompanied by a 5% loss of yield but from 33% fewer plants, relative to the high density treatment”
✓ located verbatim in the source · abstract, characters 1689–1808

Title

Regulation of tomato fruit size by plant density and truss thinning

K. E. Cockshull; L. C. Ho Journal of Horticultural Science 1995. doi:10.1080/14620316.1995.11515309

Other claims from this paper (17)

Intervention effect Removing 30% of the fruit from the first three trusses increased the average weight of the remaining fruit.
Intervention effect Removing 30% of the fruit from the first three trusses greatly reduced the yield of small fruit (grade E).
Intervention effect Truss thinning reduced the total yield from the three thinned trusses by 16%.
Intervention effect Truss thinning significantly increased the yield from higher trusses, almost completely compensating for the earlier loss of yield.
Intervention effect High planting density gave about 8% greater early yield than low density.
Intervention effect High planting density gave about 15% greater final yield than low density.
Intervention effect High planting density lowered mean fruit weight (Class I) compared with low density.
Intervention effect High planting density lowered the yield of large fruit (grade C) compared with low density.
Intervention effect High planting density raised the yield of grade E fruit compared with low density.
Intervention effect Taking side shoots lowered early marketable yields.
Intervention effect Taking side shoots increased the number of fruit produced per m2.
Intervention effect Taking side shoots increased the final yield of marketable fruit, but only at low density.
Intervention effect Adding side shoots lowered mean fruit weight.
Intervention effect Adding side shoots reduced the month-to-month variation in mean fruit weight.
Intervention effect Adding side shoots reduced the yield of larger fruit and their proportion of Class I yield.
Intervention effect Adding side shoots at low density produced fruit of more uniform size throughout the year.
Intervention effect Adding side shoots at low density gave grade D yield almost as high as high-density plants.

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“yield decrease”

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