Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativenot significant (as stated)measured

Claim · model-written summary

Ear shading caused a slightly greater yield decrease for Proctor and Herta, without significant varietal differences.

Treatment: shading the earse0
Outcome: grain yielde0
Direction: decreasee0

Not reportedTaxonComparator

Verbatim

e0
“the decrease in grain yield by shading the ears was slightly greater for Proctor and Herta, the differences were not significant.”
✓ located verbatim in the source · abstract, characters 1652–1781

Title

Physiological Causes of Differences in Grain Yield between Varieties of Barley

D. J. WATSON; GILLIAN N. THORNE; S. A. W. FRENCH Annals of Botany 1958. doi:10.1093/oxfordjournals.aob.a083616

Other claims from this paper (19)

Association Proctor and Herta yielded 10—15 per cent more grain than Plumage-Archer without nitrogen fertilizer.
Intervention effect Nitrogen increased the varietal grain yield difference to about 30 per cent.
Intervention effect Higher nitrogen caused Plumage-Archer lodging without increasing its yield.
Observation Proctor and Herta remained standing under higher nitrogen.
Observation The three varieties had similar leaf-area index, net assimilation rate and total dry weight before ear emergence.
Association After ear emergence Herta had a smaller leaf-area index than Proctor and Plumage-Archer.
Observation Shaded-ear pot experiment found nearly equal dry matter contribution per leaf area across varieties.
Mechanism The authors attributed higher yield to photosynthesis by the ears.
Association In pots, Proctor and Herta yielded only about 6 per cent more than Plumage-Archer.
Association Field ear sizes were greater for Proctor and Herta than Plumage-Archer.
Association Ear dry weight at emergence was greater in the higher yielding varieties.
Observation Herta ears may have higher photosynthetic efficiency.
Association Plumage-Archer absorbed more potassium.
Association Herta absorbed less phosphorus than the other varieties.
Observation About a quarter of final nitrogen was absorbed after ear emergence.
Observation A third of phosphorus was absorbed after ear emergence.
Observation Potassium content was nearly maximal at ear emergence and later decreased.
Observation Ear photosynthesis contributed 26 per cent of grain dry matter, including 10 per cent from awns.
Observation Flag-leaf lamina, sheath and peduncle supplied 59 per cent of grain dry matter, and lower shoots supplied 15 per cent.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

AFI14 tended to decrease grain yield versus EFI.

Taxon: cornZea mays subsp. mayst0
Treatment: AFI14e0
Outcome: grain yieldt1
Direction: decreasee0
Comparator: EFIe0

Verbatim

e0
“it tended to decrease under AFI14 as compared with EFI”
✓ located verbatim in the source · abstract, characters 648–702

t0
“corn”
✓ located verbatim in the source · title, characters 129–133

t1
“Results indicated that grain yield increased under the AFI7 treatment”
✓ located verbatim in the source · abstract, characters 569–638

Title

Impact of alternate furrow irrigation with different irrigation intervals on yield, water use efficiency, and economic return of corn

Awad Abd El-Halim Chilean journal of agricultural research 2013. doi:10.4067/s0718-58392013000200014

Other claims from this paper (7)

Intervention effect AFI7 increased grain yield versus EFI.
Intervention effect AFI7 saved approximately 7% irrigation water versus EFI.
Intervention effect AFI14 saved approximately 17% irrigation water versus EFI.
Intervention effect AFI7 improved crop water use efficiency and irrigation water productivity versus EFI.
Intervention effect AFI14 improved crop water use efficiency and irrigation water productivity versus EFI.
Intervention effect AFI7 increased benefit-cost ratio and net return.
Recommendation Authors recommend AFI7 when low cost water is available without extra delivery expense.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Yield started to decrease considerably in later years without fertilization.

Taxon: winter wheat and summer maizeTriticum aestivum Zea mayse0
Treatment: without fertilizatione2
Outcome: yielde2
Direction: decrease considerablye2

Not reportedComparator

Verbatim

e0
“comprising winter wheat and summer maize as an annual rotation”
✓ located verbatim in the source · abstract, characters 479–541

e2
“The yield did not decrease in the first year without fertilization but started to decrease considerably in later years”
✓ located verbatim in the source · abstract, characters 1046–1164

Title

Long-term legacy impacts of nitrogen fertilization on crop yield, nitrate accumulation, and nitrogen recovery efficiency

Shuang Lei; Sajjad Raza; Annie Irshad; et al. European Journal of Agronomy 2025. doi:10.1016/j.eja.2025.127513

Other claims from this paper (11)

Intervention effect N fertilization increased grain yield compared with the control.
Intervention effect DCD addition caused additional increases in grain yield, mainly at 500 kg N ha-1.
Intervention effect Yield did not decrease in the first year without fertilization.
Intervention effect N fertilization increased grain N uptake by more than 100 % compared with the control in fertilized years and the first unfertilized year.
Intervention effect Grain N uptake decreased strongly in the second year without fertilization.
Intervention effect Cumulative fertilizer N recovery did not differ among N fertilized treatments during fertilized years.
Intervention effect Cumulative fertilizer N recovery increased strongly when N uptake in unfertilized years was incorporated.
Intervention effect Cumulative fertilizer N recovery in N340 + DCD increased from 37 %–44 % in fertilized years to 74 %–80 % in unfertilized years.
Observation A residual nitrate accumulation of 237–489 kg N ha-1 accumulated in the soil profile after two years of fertilization.
Intervention effect Residual N accumulation decreased by 31 %–41 % in the first unfertilized year.
Observation Soil N accumulation became less than 60 kg ha-1 after four years of cropping without fertilization, with no difference among treatments including control.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Paclobutrazol did not decrease tart cherry yield in any season.

Taxon: tart cherryt0
Treatment: paclobutrazole5
Outcome: yielde5
Direction: no_changeinferrede5

Not reportedComparator

Verbatim

t0
“paclobutrazol-treated tart cherry trees”
✓ located verbatim in the source · title, characters 65–104

e5
“In no season did paclobutrazol decrease yield”
✓ located verbatim in the source · abstract, characters 1607–1652

Title

Growth, reproductive development and dormancy characteristics of paclobutrazol-treated tart cherry trees

R. H. Walser; T. D. Davis Journal of Horticultural Science 1989. doi:10.1080/14620316.1989.11515975

Other claims from this paper (12)

Intervention effect A single spring paclobutrazol application decreased shoot growth in tart cherry trees during the first and second seasons after treatment.
Intervention effect Paclobutrazol increased the proportion of flower buds to vegetative buds in tart cherry during the first dormant period.
Intervention effect Paclobutrazol advanced the date of full bloom in tart cherry by two to four days.
Intervention effect Paclobutrazol decreased the growing degree hours required to reach full bloom by 700–900 in tart cherry trees.
Intervention effect Paclobutrazol tended to decrease rest intensity in both terminal and lateral buds of tart cherry.
Intervention effect In some tart cherry trees, paclobutrazol hastened the completion of rest.
Observation In tart cherry, lateral buds completed rest about one week before terminal buds regardless of treatment.
Observation Rest was completed in tart cherry buds at least by early December.
Intervention effect Flower buds from paclobutrazol-treated tart cherry trees had mid-winter T50 values about 2°C higher than controls.
Intervention effect Paclobutrazol increased flower bud frost damage in tart cherry by about 50% compared with controls during a severe winter cold spell in 1988.
Intervention effect In one season, paclobutrazol-treated tart cherry trees showed a dramatic three-fold yield increase.
Intervention effect Paclobutrazol had either no effect or slightly increased individual cherry weight in tart cherry, depending on the season.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Ratoon rice cultivation does not decrease yield.

Taxon: Ratoon Ricet0
Outcome: yielde0
Direction: without decreasinge0

Verbatim

e0
“without decreasing yield and benefit”
✓ located verbatim in the source · abstract, characters 388–424

t0
“Ratoon Rice”
✓ located verbatim in the source · title, characters 25–36

Title

Development Situation of Ratoon Rice Production in Youxi County

Dong Rui-xia 2012

Other claims from this paper (3)

Observation Ratoon rice cultivation saves labor.
Observation Ratoon rice cultivation saves costs.
Observation Ratoon rice cultivation does not decrease economic benefit.

Intervention effectobservedoriginal resultnegativesimulated

Claim · model-written summary

For winter wheat, a gradual increase in air temperature resulted in a simulated yield decrease.

Taxon: winter wheatTriticum aestivume0
Treatment: gradual increase in air temperaturee0
Outcome: yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“For winter wheat, a gradual increase in air temperature resulted in a yield decrease”
✓ located verbatim in the source · abstract, characters 751–835

Title

Potential impact of climate change on selected agricultural crops in north‐eastern Austria

Vesselin Alexandrov; Josef Eitzinger; Vesna Cajic; et al. Global Change Biology 2002. doi:10.1046/j.1354-1013.2002.00484.x

Other claims from this paper (9)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

An 80% decrease in soybean yield was associated with the 0.4P salinity peak treatment.

Taxon: SoybeanGlycine maxe0
Treatment: 0.4Pe4
Outcome: yielde4
Direction: decreasee4
Value: 80%e4

Verbatim

e0
“Soybean responded differently to stable salinity levels versus peaks of salinity”
✓ located verbatim in the source · abstract, characters 962–1042

e4
“an 80% decrease in yield was associated with the 0.4P treatment”
✓ located verbatim in the source · abstract, characters 1407–1470

Title

Soybean growth under stable versus peak salinity

Carolina Bustingorri; Raúl Silvio Lavado Scientia Agricola 2011. doi:10.1590/s0103-90162011000100015

Other claims from this paper (4)

Intervention effect Permanent salinity greatly reduced biomass production and differentiation of reproductive organs in soybean, regardless of salinity level.
Intervention effect Soybean at 0.8S never reached the reproductive phase.
Intervention effect Soybean at 0.4P showed only small differences in growth data from the control.
Recommendation A leaf chloride concentration of 1 mg g-1 of Cl- in dry matter should be considered a maximum threshold for soybean yield.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Cold-induced bolting was associated with a 10%-20% yield decrease.

Taxon: sugar beetBeta vulgaris subsp. vulgarise0
Treatment: Cold temperaturee0
Outcome: yielde0
Direction: decreasee0
Value: 10%-20%e0

Verbatim

e0
“Cold temperature that would induce a biannual sugar beet to bolting,which would lead the yield to decrease 10%-20%”
✓ located verbatim in the source · abstract, characters 0–114

Title

Differential expression analysis of bolting genes in the cold induced sugar beet

Fengming Ma Dongbei Nongye Daxue xuebao 2009

Other claims from this paper (2)

Observation Cold-induced bolting was associated with a 0.8%-1.6% reduction in sugar ratio.
Method / resource A cDNA fragment DP3 was obtained from shoot tips of cold-induced sugar beet.

Mechanismobservedoriginal resultnegativemeasured

Claim · model-written summary

The yield decrease lowered total grain protein production per crop.

Taxon: RiceOryza sativat0
Outcome: total grain protein production per crope0
Direction: lowerse0
Qualifier: decrease in grain yielde0

Verbatim

e0
“This decrease in grain yield consequently lowers the total grain protein production per crop.”
✓ located verbatim in the source · abstract, characters 217–310

t0
“Rice”
✓ located verbatim in the source · title, characters 41–45

Title

Effect of Simazine on Protein Content of Rice Grain (Oryza sativa L.)

B. S. Vergara; M. Miller; E. Avelino Agronomy Journal 1970. doi:10.2134/agronj1970.00021962006200020028x

Other claims from this paper (6)

Intervention effect Simazine applied at flowering increased grain protein percentage.
Intervention effect Simazine applied at flowering decreased grain yield.
Mechanism Increased sterility was attributed as the cause of reduced grain yield.
Intervention effect Simazine increased nitrogen content of blades, sheaths plus culms, and roots in young rice plants.
Mechanism The nitrogen percentage increase did not result from increased plant nitrogen uptake.
Mechanism Reduced dry weight accounted for increased nitrogen percentage.

Observationobservedoriginal resultnegativeprojected

Claim · model-written summary

Climate change was projected to greatly decrease untreated winter oilseed rape yield in southern England.

Taxon: winter oilseed rapeBrassica napuse0
Treatment: untreatede0
Outcome: yielde0
Direction: greatly decreasee0
Setting: southern Englande1

Verbatim

e0
“greatly decrease yield of untreated winter oilseed rape”
✓ located verbatim in the source · abstract, characters 967–1022

e1
“southern England the combination”
✓ located verbatim in the source · abstract, characters 746–778

Title

North–South divide: contrasting impacts of climate change on crop yields in Scotland and England

Michael H. Butterworth; Mikhail A. Semenov; Andrew Barnes; et al. Journal of The Royal Society Interface 2009. doi:10.1098/rsif.2009.0111

Other claims from this paper (3)

“yield decrease”

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