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“yield decrease”

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plus 6 earlier · 1930s

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Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Withholding nitrogen after flowering did not decrease green soybean yield.

Taxon: green soybeane1
Treatment: withholding nitrogen after floweringe0
Outcome: yielde0
Direction: no decreasee0

Not reportedComparator

Verbatim

e0
“there was no decrease in yield in treatments withholding nitrogen after flowering”
✓ located verbatim in the source · abstract, characters 471–552

e1
“In green soybean”
✓ located verbatim in the source · abstract, characters 201–217

Title

Effects of nitrogen supplied in various growth stages on the growth and yield of several vegetable crops

M. IWATA; A. UTADA Journal of the Japanese Society for Horticultural Science 1968. doi:10.2503/jjshs.37.57

Other claims from this paper (10)

Intervention effect Withholding nitrogen in the first half delayed green soybean flowering.
Intervention effect Withholding nitrogen in the first half delayed green soybean harvest.
Intervention effect Stopping nitrogen for 2-3 weeks before flowering reduced green soybean pod yield.
Intervention effect Withholding nitrogen during rapid outer leaf growth reduced autumn cabbage head weight.
Intervention effect Withholding nitrogen after early June did not significantly change cabbage head weight versus continuous supply.
Intervention effect Withholding nitrogen in winter did not significantly change cabbage head weight versus continuous supply.
Intervention effect Stopping nitrogen at any growth stage suppressed turnip top growth.
Intervention effect Stopping nitrogen at any growth stage suppressed turnip root yield.
Intervention effect Withholding nitrogen for 2 weeks before harvest improved turnip root yield versus control.
Intervention effect Withholding nitrogen immediately before harvest suppressed cauliflower curd growth.

Associationobservedoriginal resultno effectsimulated

Claim · model-written summary

With overdominance, using the parental variety as tester will at least not decrease maize yield.

Taxon: MaizeZea mayst0
Treatment: parental varietye5
Outcome: yielde5
Direction: not declinee5

Verbatim

t0
“Synthetic Varieties of Maize”
✓ located verbatim in the source · title, characters 51–79

e5
“if the parental variety is used as tester the yield will at least not decline”
✓ located verbatim in the source · abstract, characters 709–786

Title

On the Choice of Tester Parent for the Breeding of Synthetic Varieties of Maize (Zea mays L.)¹

J. C. S. Allison; R. N. Curnow Crop Science 1966. doi:10.2135/cropsci1966.0011183x000600060012x

Other claims from this paper (8)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Those insecticide treatments did not alter seed set or yield.

Taxon: OnionAllium cepat0
Treatment: These treatmentse0
Outcome: seed set or yielde0
Direction: did not increase or decreasee0

Not reportedComparator

Verbatim

e0
“These treatments did not increase or decrease seed set or yield but the use of parathion indicated some increase in seed viability.”
✓ located verbatim in the source · abstract, characters 1375–1506

t0
“Flower Thrips on Onion”
✓ located verbatim in the source · title, characters 10–32

Title

Effect of Flower Thrips on Onion Seed Plants and a Study of Their Control

Elmer C. Carlson Journal of Economic Entomology 1964. doi:10.1093/jee/57.5.735

Other claims from this paper (17)

Observation Flower thrips feeding injures flower filaments and causes premature pollen loss and reduced pollination and seed set.
Observation About 10 thrips per flower or floret were needed for meaningful injury.
Observation An estimated 9,000 to 10,000 thrips per seed head would be needed for economic injury and seed loss.
Observation Observed infestations reached 1900, 2400 and 3600 thrips per head.
Observation These thrips densities did not reduce onion seed set, yield, size or viability.
Intervention effect Thrips increased pollination and seed set over controls in every experiment.
Intervention effect Adding pollinators increased seed production and viability relative to thrips alone.
Observation Fly pollinators and two heads per replicate cage were needed for adequate seed set.
Observation Across three years, thrips density never caused economic onion seed loss.
Intervention effect Two or three parathion applications satisfactorily controlled thrips.
Intervention effect Two or three diazinon applications satisfactorily controlled thrips.
Intervention effect Parathion appeared to increase seed viability somewhat.
Intervention effect Parathion during bloom reduced bee and fly pollinators for about three days.
Intervention effect One prebloom dimethoate application gave outstanding thrips control.
Intervention effect The single prebloom dimethoate application did not reduce pollinators.
Intervention effect An additional bloom dimethoate application reduced pollinators for up to ten days.
Intervention effect The single dimethoate application increased seed set and yield.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

In plots of cv 30∼100 %, no decrease of grain weight was observed relative to the plot of cv 0 %.

Taxon: RiceOryza sativat0
Treatment: cv 30∼100 %e7
Outcome: decrease of grain weighte7
Direction: was not observede7
Comparator: plot of cv 0 %e7

Verbatim

t0
“Irregular Disposition of Rice Plant”
✓ located verbatim in the source · title, characters 14–49

e7
“Accordingly decrease of grain weight compared with the plot of cv 0 % was not observed in plots of cv 30∼100 %”
✓ located verbatim in the source · abstract, characters 1123–1233

Title

The Effect of Irregular Disposition of Rice Plant on Yield in Direct Sowing Culture

Masami HIMEDA; Seiichi IZUMI Japanese Journal of Crop Science 1965. doi:10.1626/jcs.33.399

Other claims from this paper (9)

Intervention effect More irregular disposition of rice plants caused a greater decrease in grain weight per unit area.
Intervention effect The decrease in grain weight with irregular disposition was more remarkable in Fujiminori than in Manryo.
Mechanism Decrease of grain weight was caused by a decrease in the number of panicles per unit area.
Association In Fujiminori, the number of panicles decreased as irregularity in plant disposition increased.
Intervention effect In Fujiminori, grain weight per panicle remained unchanged as irregularity in plant disposition increased.
Association In Manryo, grain weight per panicle increased.
Association In Manryo, the number of panicles decreased.
Intervention effect In Fujiminori, the decrease in grain weight with irregular disposition was more marked at low seeding density than at high seeding density.
Intervention effect In Manryo, the difference in the effect of irregular disposition on grain weight between spacing densities was not clear.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Pre-blossom severe stress did not reduce yield when water was ample afterward.

Taxon: peaLathyrus oleraceuse0
Treatment: Severe water stress prior to blossome0
Outcome: pea yielde0
Direction: did not cause a decreasee0
Qualifier: ample soil moisture was made available after blossome0

Not reportedComparator

Verbatim

e0
“Severe water stress prior to blossom did not cause a decrease in pea yield if ample soil moisture was made available after blossom”
✓ located verbatim in the source · abstract, characters 830–960

Title

RESPONSE OF PEAS TO ENVIRONMENT: IV. EFFECT OF FIVE SOIL WATER REGIMES ON GROWTH AND DEVELOPMENT OF PEAS

A. R. Maurer; H. F. Fletcher; D. P. Ormrod Canadian Journal of Plant Science 1968. doi:10.4141/cjps68-025

Other claims from this paper (6)

Intervention effect Minimal stress allowed luxuriant growth through harvest.
Intervention effect Irrigation at 60% versus 88% available water did not reduce pea yield or height.
Intervention effect Irrigation at 60% versus 88% available water reduced fresh weight and dry matter.
Intervention effect Severe post-blossom stress reduced yield regardless of earlier water regime.
Intervention effect Previously well-watered plants wilted under severe post-blossom stress.
Observation Plants stressed before and after blossom did not wilt.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Late infection in Blenda did not reduce grains per ear despite lower yield.

Taxon: oatsAvena sativat0
Material: Blendae0
Treatment: late infectione0
Interactor: barley yellow dwarf virusBarley yellow dwarf virust0pathogen
Outcome: number of grains per eare0
Direction: not accompanied by a decreasee0

Not reportedComparator

Verbatim

t0
“barley yellow dwarf virus in barley and oats”
✓ located verbatim in the source · title, characters 27–71

e0
“The lower yield resulting from late infection in Blenda was not accompanied by a decrease in number of grains per ear”
✓ located verbatim in the source · abstract, characters 1019–1136

Title

Comparison of tolerance to barley yellow dwarf virus in barley and oats

G. JENKINS Annals of Applied Biology 1966. doi:10.1111/j.1744-7348.1966.tb06877.x

Other claims from this paper (13)

Intervention effect Early BYDV infection decreased yield of Blenda by 97%.
Intervention effect Early BYDV infection decreased yield of Proctor by 93%.
Intervention effect Early BYDV infection decreased yield of Albion by 31%.
Intervention effect Early BYDV infection decreased yield of CI 7488 by 12%.
Intervention effect Early infection had no yield effect in CI 2325.
Intervention effect Early infection had no yield effect in CI 7224.
Intervention effect Late infection decreased grain yield only in Blenda.
Intervention effect early infection decreased mature straw height in all three oat varieties.
Intervention effect late infection decreased mature straw height in Blenda.
Intervention effect late infection decreased mature straw height in CI 7224.
Intervention effect Infection generally decreased fertile tillers, grains per ear, and thousand-grain weights with yield.
Intervention effect Early infection increased number of ear‐bearing tillers in CI 7488.
Intervention effect Early infection increased rooo‐grain weight in Albion.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Applying one, two or three kinds of nucleosides did not significantly decrease aberration frequency.

Taxon: Trillium kamtschaticumTrillium camschatcensee1
Treatment: one, two or three kinds of nucleosidese0
Outcome: aberration frequencye0
Direction: did not bring about any significant decreasee0

Not reportedComparator

Verbatim

e0
“Simultaneous application of one, two or three kinds of nucleosides did not bring about any significant decrease in aberration frequency”
✓ located verbatim in the source · abstract, characters 454–589

e1
“The influence of mitomycin C, chloramphenicol, ATP and various nucleosides on the yield of X-ray-induced chromosome aberrations was examined with the ovular tissue cells of Trillium kamtschaticum.”
✓ located verbatim in the source · abstract, characters 0–196

Title

STUDIES ON THE FACTORS AFFECTING THE REJOINING OF CHROMOSOME BREAKS PRODUCED BY X-RAYS

MASAKI IWABUCHI; TAKASHI SAHO; SHIGEYUKI TANIFUJI The Japanese Journal of Genetics 1966. doi:10.1266/jjg.41.379

Other claims from this paper (8)

Intervention effect Mitomycin C significantly increased X-ray-induced chromosome aberrations.
Intervention effect chloramphenicol significantly increased X-ray-induced chromosome aberrations.
Intervention effect ATP reduced chromosome aberration yield.
Intervention effect The DNA base component nucleoside mixture significantly decreased aberration yield.
Intervention effect Four RNA component nucleosides did not significantly reduce aberration frequency, although a reduction tendency was seen.
Intervention effect Mitomycin C completely arrested the favorable action of the nucleoside mixture and ATP on chromosome break rejoining.
Intervention effect Chloramphenicol completely arrested the favorable action of the nucleoside mixture and ATP on chromosome break rejoining.
Mechanism The authors suggest DNA and protein syntheses are involved in rejoining X-ray-induced chromosome breaks.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Soil loss below 3.8 kg/ha on 1- to 3-week-old cotton plants did not reduce yield.

Taxon: cottonGossypium hirsutume0
Organ / stage: 1‐ to 3‐weekolde0
Treatment: soil loss of less than 3.8 kg/hae0
Outcome: yieldse0
Direction: did not decreasee0
Value: less than 3.8 kg/hae0

Not reportedComparator

Verbatim

e0
“A soil loss of less than 3.8 kg/ha (1.7 tons/acre) on 1‐ to 3‐weekold cotton plants did not decrease yields”
✓ located verbatim in the source · abstract, characters 332–439

Title

Windblown Soil Abrasive Injury to Cotton Plants¹

D. V. Armbrust Agronomy Journal 1968. doi:10.2134/agronj1968.00021962006000060011x

Other claims from this paper (4)

Intervention effect Greater soil abrasion decreased growth rate in young cotton plants.
Intervention effect Greater soil abrasion decreased yield in young cotton plants.
Intervention effect Greater soil abrasion delayed first bloom in young cotton plants.
Intervention effect Greater soil abrasion increased plant loss in young cotton plants.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Potato yield was not lowered when planting tempo maintained plant number per hectare.

Taxon: potatoSolanum tuberosume0
Outcome: potato yielde0
Direction: not lowerede0

Verbatim

e0
“The potato yieldwas not lowered in the plots planted at the tempo that the plant number per ha did not decrease”
✓ located verbatim in the source · abstract, characters 1983–2094

Title

Studies on the Working Speed of Semiautomatic Farm Machinery

Wataru SUNOHARA; Kinzo KAWATEI Japanese Journal of Farm Work Research 1969. doi:10.4035/jsfwr.1969.57

Other claims from this paper (12)

Observation Smooth tuber dropping occurred at 0.43 to 0.8 seconds per cycle.
Observation The optimum range for smooth dropping was 0.6 to 0.8 seconds.
Observation At smooth dropping tempos, both hands moved and stopped simultaneously and rhythmically with consistent motion times.
Observation At tempos too fast or slow, hand rhythm was disrupted.
Intervention effect Tempos faster than 0.5 seconds reduced the number of dropped tubers.
Intervention effect Tempos faster than 0.5 seconds decreased plant number per hectare.
Observation Dropped tuber interval deviated least at the smoothest tempo.
Intervention effect Overly fast dropping caused larger plant spacing deviations at dropping, sprouting and harvest.
Observation At smooth and overly slow tempos, plant spacing variation was 20–40% of the predetermined spacing.
Intervention effect Slower tempo did not lower the spacing coefficient of variance.
Observation The upper limit of tempo maintaining plant number per hectare was estimated at 0.5 seconds.
Recommendation The authors concluded that optimum dropping tempo was 0.6 seconds.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Optimum gibberellin concentrations caused little or no reduction in fruit yield.

Taxon: Zinfandel, Tinta Madeira, and Carignane vinese0
Treatment: Optimum concentrations of gibberelline2
Outcome: yield of fruite2
Direction: little or no reductione2

Not reportedComparator

Verbatim

e0
“Zinfandel, Tinta Madeira, and Carignane vines were sprayed with gibberellin at prebloom or bloom stage”
✓ located verbatim in the source · abstract, characters 0–102

e2
“Optimum concentrations of gibberellin caused little or no reduction in yield of fruit”
✓ located verbatim in the source · abstract, characters 180–265

Title

Studies with Gibberellin on Wine Grapes to Decrease Bunch Rot

Robert J. Weaver; A. N. Kasimatis; Stanley B. Mccune American Journal of Enology and Viticulture 1962. doi:10.5344/ajev.1962.13.2.78

Other claims from this paper (3)

Intervention effect Gibberellin sprays loosened grape clusters.
Intervention effect Gibberellin sprays sharply reduced the prevalence of bunch rot.
Intervention effect Gibberellin spraying in two successive years produced no adverse effects.

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“yield decrease”

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