Search claims · PlantClaims

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

At low versus high sowing density, grain yield in modern wheat cultivars did not decrease significantly.

Taxon: common wheatTriticum aestivumt0
Material: modern cultivarse0
Treatment: low sowing densitye0
Outcome: grain yielde0
Direction: did not decreasee0
Comparator: high sowing densitye0

Verbatim

e0
“Compared to high sowing density, in modern cultivars grain yield did not decrease significantly with low sowing density”
✓ located verbatim in the source · abstract, characters 905–1024

t0
“common wheat”
✓ located verbatim in the source · title, characters 73–85

Title

Grain yield and competitive ability against weeds in modern and heritage common wheat cultivars are differently influenced by sowing density

Mariateresa Lazzaro; Ambrogio Costanzo; Dalia Hosam Farag; et al. Italian Journal of Agronomy 2017. doi:10.4081/ija.2017.901

Other claims from this paper (8)

Intervention effect Single cultivars and mixtures did not differ significantly in grain yield and weed suppression.
Intervention effect At low versus high sowing density, grain yield increased 15.6% in heritage wheat cultivars.
Intervention effect Plant lodging in heritage wheat cultivars was 21.5% lower at low sowing density.
Intervention effect Weed biomass increased at low sowing density in heritage wheat crop stands.
Intervention effect Weed biomass increased at low sowing density in modern wheat crop stands.
Association Heritage wheat crop stands had 56% lower weed biomass on average than modern stands.
Association At low sowing density, heritage wheat stands had weed biomass of 6.82±1.50 g m–2, lower than modern stands.
Recommendation The authors advise lower sowing density for heritage wheat crop stands to retain productivity, reduce lodging and control weeds.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Green manure crops gave the greatest soil density decrease, 7-8%.

Taxon: spring wheatTriticum aestivumt0
Outcome: soil densitye0
Direction: decreasee0
Value: 7-8%e0

Verbatim

e0
“The greatest decrease in the soil density (7-8%) was observed in the 0-10 cm layer after green-manure crops”
✓ located verbatim in the source · abstract, characters 876–983

t0
“spring wheat”
✓ located verbatim in the source · title, characters 62–74

Title

The influence of crop rotation on soil fertility and yield of spring wheat in forest-steppe zone of the Tuva Republic

T. F. Zharova DOAJ (DOAJ: Directory of Open Access Journals) 2016

Other claims from this paper (12)

Intervention effect Green manure fallows increased humus content by 0.6-0.13%.
Observation Humus decreased by 0.46% in grain-fallow control.
Observation Labile P2O5 supply was extremely low in control and grain crop rotations in 2014.
Observation Exchange K2O supply increased in grain-fallow and manure rotations.
Observation Soil density increased insignificantly after pure fallow.
Observation Soil density decreased 3-8% in other variants.
Intervention effect After green manure, Kantegirskaya 89 yield was higher by 0.24-0.28 t/ha.
Intervention effect After green manure, Chagytay yield was higher by 0.10-0,05 t/ha.
Intervention effect Occupied fallow decreased Kantegirskaya 89 grain exit by 0.45 t/ha.
Intervention effect Green manure fallow decreased Kantegirskaya 89 grain exit by 0.69-0.73 t/ha.
Intervention effect Occupied fallow decreased Chagytay grain exit by 0.14 t/ha.
Intervention effect Green manure fallow decreased Chagytay grain exit by 0.19-0.25 t/ha.

Associationobservedoriginal resultmeasured

Claim · model-written summary

More recently released cultivars had a progressively smaller ozone related decrease in bulk density.

Taxon: wheatTriticum aestivumt0
Outcome: rate of decrease in bulk densitye0
Direction: diminishese0
Qualifier: As the release age approachese0

Not reportedMaterial

Verbatim

e0
“As the release age approaches, the rate of decrease in bulk density diminishes gradually”
✓ located verbatim in the source · abstract, characters 1549–1637

t0
“survey of Chinese wheat”
✓ located verbatim in the source · title, characters 99–122

Title

Renewal of wheat cultivars enhances ozone resistance in yield but detrimentally impacts quality: a survey of Chinese wheat

Yinsen Qian; Zheng Zhao; Yifan Cao; et al. Frontiers in Plant Science 2025. doi:10.3389/fpls.2024.1526846

Other claims from this paper (13)

Intervention effect Elevated ozone significantly reduced wheat yield by 18.19%.
Intervention effect Ozone reduced yield of cultivars released in the 1970s by 24.9%.
Intervention effect Ozone reduced yield of cultivars released in the 1980s by 23.3%.
Intervention effect Ozone reduced yield of cultivars released in the 1990s by 19.8%.
Intervention effect Ozone reduced yield of cultivars released in the after 2000 by 14.7%.
Association Thousand grain weight had the strongest direct effect on yield, followed by grains per spike; spike number contributed least.
Recommendation The authors recommend increasing thousand grain weight for ozone resistance breeding.
Intervention effect Elevated ozone raised sedimentation values and protein content.
Intervention effect Elevated ozone lowered bulk density, hardness and starch content.
Observation Cultivars released in the 1990s were less sensitive for hardness, sedimentation value and starch content.
Observation Cultivars released after the 2000s had the largest protein content changes.
Observation Stress indices indicate greater resistance to yield loss in cultivars released after 2000.
Recommendation The Yangmai series was identified as promising parental material for ozone resistant breeding.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Wheat yield tended to decrease above the stated density thresholds.

Taxon: wheatTriticum aestivume0
Treatment: wheat planting density exceeded 450 × 10 4 seedlings ha −1 and 525 × 10 4 seedlings ha −1e0
Outcome: wheat yielde0
Direction: decreasee0

Not reportedSetting

Verbatim

e0
“when wheat planting density exceeded 450 × 10 4 seedlings ha −1 and 525 × 10 4 seedlings ha −1 , wheat yield tended to decrease”
✓ located verbatim in the source · abstract, characters 439–566

Title

Spermidine regulates wheat grain weight at high planting density by promoting the synthesis of sucrose and starch in inferior grains

Juan Li; Zimeng Liang; Jingyi Feng; et al. Physiologia Plantarum 2024. doi:10.1111/ppl.14321

Other claims from this paper (11)

Intervention effect High density reduced inferior grain filling rate before 25 DAA.
Intervention effect High density shortened the active filling period by 6.4%–7.4%.
Intervention effect High density lowered 1000-grain weight by 5.4%–8.1%.
Intervention effect High density significantly reduced sucrose and starch content in inferior grains.
Intervention effect High density inhibited SAMDC and SpdSy activity.
Intervention effect High density induced ethylene precursor synthase activity.
Intervention effect High density significantly decreased endogenous spermidine content.
Intervention effect High density significantly increased ethylene release rate.
Intervention effect Exogenous spermidine increased sucrose and starch accumulation in inferior grains.
Intervention effect Exogenous spermidine positively regulated inferior grain filling and weight.
Intervention effect Exogenous ethylene had a negative effect on inferior grain filling and weight.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

A third year without wheat gave no further wild oat density decrease.

Taxon: wheatTriticum aestivumt0
Treatment: a third year without wheate0
Interactor: wild oatsAvenat0weed
Outcome: additional decreasee0
Direction: no additional decreasee0

Not reportedComparator

Verbatim

t0
“wild oats in wheat”
✓ located verbatim in the source · title, characters 15–33

e0
“a third year without wheat gave no additional decrease.”
✓ located verbatim in the source · abstract, characters 540–595

Title

The control of wild oats in wheat by winter fallowing and summer cropping

H. PHILPOTTS Weed Research 1975. doi:10.1111/j.1365-3180.1975.tb01128.x

Other claims from this paper (5)

Intervention effect One winter fallow reduced wild oat density by 96.6 percent.
Intervention effect Two consecutive fallows reduced wild oat density below 0.2 plants per square metre.
Association Wheat establishment was affected only at very high wild oat density.
Intervention effect Wild oats reduced wheat yield by up to 77 percent.
Association Wheat yield was significantly negatively related to wild oat density.

Observationobservedoriginal resultmixedmeasured

Claim · model-written summary

Bulk density under no tillage (NT) could increase or decrease

Taxon: winter wheatTriticum aestivume0
Treatment: NTe1
Outcome: bulk density (BD)e1
Direction: increase or decreasee1

Verbatim

e0
“for winter wheat crops”
✓ located verbatim in the source · abstract, characters 319–341

e1
“The results revealed that physical properties such as bulk density (BD) can increase or decrease under NT, while soil water content (SWC) increased under the same system”
✓ located verbatim in the source · abstract, characters 800–969

Title

Long-Term Effect of Tillage Practices on Soil Physical Properties and Winter Wheat Yield in North-East Romania

Segla Serginho Cakpo; Tudor George Aostăcioaei; Gabriel-Dumitru Mihu; et al. Agriculture 2025. doi:10.3390/agriculture15090989

Other claims from this paper (8)

Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

Marker density as low as 500 did not decrease prediction accuracy.

Taxon: spring wheatTriticum aestivumt0
Outcome: prediction accuracye0
Direction: without decreasinge0
Value: 500e0

Verbatim

e0
“marker density could be as low as 500 without decreasing the prediction accuracy”
✓ located verbatim in the source · abstract, characters 1018–1098

t0
“spring wheat”
✓ located verbatim in the source · title, characters 75–87

Title

Leveraging historical trials to predict Fusarium head blight resistance in spring wheat breeding programs

Charlotte Brault; Emily J. Conley; Andrew J. Green; et al. The Plant Genome 2025. doi:10.1002/tpg2.20559

Other claims from this paper (4)

Method / resource Reproducing kernel Hilbert space was the best prediction method across settings with mean accuracy 0.63.
Method / resource Training set optimization was useful for two traits.
Method / resource Prediction of unrelated breeding populations significantly decreased accuracy, although some traits and populations retained encouraging values.
Method / resource Adding the URSN population increased prediction accuracy up to 0.19 as the number of breeding-program training lines fell.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The combined decrease in nitrogen recovery and increase in planting density decreased protein content, sedimentation value and wet gluten content of wheat.

Taxon: wheatTriticum aestivumt1
Treatment: combined decrease in nitrogen recovery and increase in planting densitye0
Outcome: protein content, sedimentation value and wet gluten contente0
Direction: decreasede0

Not reportedComparator

Verbatim

t1
“Weak-Gluten Wheat”
✓ located verbatim in the source · title, characters 158–175

e0
“The combined decrease in nitrogen recovery and increase in planting density decreased protein content, sedimentation value and wet gluten content”
✓ located verbatim in the source · abstract, characters 2050–2195

Title

Increasing Planting Density with Reduced Topdressing Nitrogen Inputs Increased Nitrogen Use Efficiency and Improved Grain Quality While Maintaining Yields in Weak-Gluten Wheat

Wenyin Zhou; Suhui Yan; Abdul Rehman; et al. Agriculture 2024. doi:10.3390/agriculture15010013

Other claims from this paper (13)

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The yield decrease under conservation tillage was mostly attributed to a decreased ear density.

Taxon: spring wheatTriticum aestivumt0
Treatment: conservation tillagee1
Outcome: yield of spring wheat graine1
Qualifier: a decreased ear densitye1

Verbatim

t0
“HEALTH OF SPRING WHEAT”
✓ located verbatim in the source · title, characters 78–100

e1
“Decrease in the yield of spring wheat grain on plots with conservation tillage, to the highest degree resulted from a decreased ear density”
✓ located verbatim in the source · abstract, characters 916–1055

Title

THE EFFECT OF TILLAGE SYSTEMS AND CATCH CROPS ON THE YIELD, GRAIN QUALITY AND HEALTH OF SPRING WHEAT

Piotr Kraska; Sylwia Andruszczak; Ewa Kwiecińska-Poppe; et al. Acta Scientiarum Polonorum. Agricultura 2014

Other claims from this paper (13)

Intervention effect Plough tillage gave higher ear density and grain number per ear in spring wheat than conservation tillage.
Intervention effect Plough tillage increased spring wheat grain yield compared with conservation tillage.
Intervention effect Stubble catch crops gave higher ear number and grain yield than undersown Dutch ryegrass and the control.
Intervention effect Undersown red clover gave higher ear number and grain yield than undersown Dutch ryegrass and the control.
Mechanism The better yield after stubble catch crops was largely due to an increased ear number per unit area.
Mechanism The better yield after undersown red clover was largely due to an increased ear number per unit area.
Intervention effect Tillage systems did not significantly change 1000 grain weight of spring wheat.
Intervention effect Catch crops did not significantly change 1000 grain weight of spring wheat.
Intervention effect Tillage systems did not alter the degree of infestation of spring wheat culm and root with a complex of fungal diseases.
Intervention effect Undersown red clover gave a significantly lower disease index in spring wheat than undersown Dutch ryegrass and the control.
Intervention effect Stubble catch crops gave a significantly lower disease index in spring wheat than undersown Dutch ryegrass and the control.
Intervention effect Applied tillage systems did not change total protein and gluten content or sedimentation coefficient of spring wheat grain.
Intervention effect Dutch ryegrass as a catch crop deteriorated the quality of spring wheat grain.

Associationobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Resource complementarity decreased significantly as wheat and bean density increased.

Taxon: wheatTriticum aestivume0
Treatment: wheat and bean densitye0
Outcome: resource complementaritye0
Direction: decreasee0

Verbatim

e0
“There was a significant decrease in resource complementarity with increasing wheat and bean density”
✓ located verbatim in the source · abstract, characters 1038–1137

Title

Effects of plant density on intercropped wheat and field beans in an organic farming system

H. A. J. BULSON; R. W. SNAYDON; C. E. STOPES The Journal of Agricultural Science 1997. doi:10.1017/s0021859696003759

Other claims from this paper (19)

“decrease in density”

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