Search claims · PlantClaims

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Grain corn yield did not decrease with cover crops.

Taxon: grain corne5
Treatment: with CCe5
Outcome: yielde5
Direction: did not decreasee5

Not reportedComparator

Verbatim

e5
“Cover crops significantly increased vegetable crop yields and decreased the silage corn yield; however, grain corn, soybean, and winter wheat yield did not decrease with CC”
✓ located verbatim in the source · abstract, characters 1013–1185

Title

Do Cover Crops Increase Subsequent Crop Yield in Temperate Climates? A Meta-Analysis

Inderjot Chahal; Laura L. Van Eerd Sustainability 2023. doi:10.3390/su15086517

Other claims from this paper (15)

Intervention effect Legume cover crop species increased subsequent crop yield significantly more than grass, by 14%.
Intervention effect Legume cover crop species increased subsequent crop yield significantly more than nonlegume broadleaves, by 7%.
Intervention effect Legume cover crop species increased subsequent crop yield significantly more than mixtures, by 2%.
Intervention effect Incorporating cover crop residue into soil increased crop yield by about 15% compared with leaving the residue on the soil surface.
Intervention effect Grass cover crops enhanced crop yield by 14% relative to no cover crop in non-organic vegetable systems.
Intervention effect Legume cover crops enhanced crop yield by 19% relative to no cover crop in non-organic vegetable systems.
Intervention effect Legume cover crops increased crop yield by 18% relative to no cover crop in coarse textured soil.
Intervention effect Legume cover crops increased crop yield by 4% relative to no cover crop in medium textured soil.
Intervention effect Legume cover crops increased crop yield by 11% relative to no cover crop under high precipitation.
Intervention effect Cover crops significantly increased vegetable crop yields.
Intervention effect Cover crops decreased silage corn yield.
Intervention effect Soybean yield did not decrease with cover crops.
Intervention effect Winter wheat yield did not decrease with cover crops.
Intervention effect Cover crops in no-tillage and plow tillage systems increased crop yield compared with the no-CC control.
Recommendation Crop yield response to cover crops might become more robust when pedo-climatic and agronomic factors are considered.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Winter wheat yield did not decrease with cover crops.

Taxon: winter wheatTriticum aestivume5
Treatment: with CCe5
Outcome: yielde5
Direction: did not decreasee5

Not reportedComparator

Verbatim

e5
“Cover crops significantly increased vegetable crop yields and decreased the silage corn yield; however, grain corn, soybean, and winter wheat yield did not decrease with CC”
✓ located verbatim in the source · abstract, characters 1013–1185

Title

Do Cover Crops Increase Subsequent Crop Yield in Temperate Climates? A Meta-Analysis

Inderjot Chahal; Laura L. Van Eerd Sustainability 2023. doi:10.3390/su15086517

Other claims from this paper (15)

Intervention effect Legume cover crop species increased subsequent crop yield significantly more than grass, by 14%.
Intervention effect Legume cover crop species increased subsequent crop yield significantly more than nonlegume broadleaves, by 7%.
Intervention effect Legume cover crop species increased subsequent crop yield significantly more than mixtures, by 2%.
Intervention effect Incorporating cover crop residue into soil increased crop yield by about 15% compared with leaving the residue on the soil surface.
Intervention effect Grass cover crops enhanced crop yield by 14% relative to no cover crop in non-organic vegetable systems.
Intervention effect Legume cover crops enhanced crop yield by 19% relative to no cover crop in non-organic vegetable systems.
Intervention effect Legume cover crops increased crop yield by 18% relative to no cover crop in coarse textured soil.
Intervention effect Legume cover crops increased crop yield by 4% relative to no cover crop in medium textured soil.
Intervention effect Legume cover crops increased crop yield by 11% relative to no cover crop under high precipitation.
Intervention effect Cover crops significantly increased vegetable crop yields.
Intervention effect Cover crops decreased silage corn yield.
Intervention effect Grain corn yield did not decrease with cover crops.
Intervention effect Soybean yield did not decrease with cover crops.
Intervention effect Cover crops in no-tillage and plow tillage systems increased crop yield compared with the no-CC control.
Recommendation Crop yield response to cover crops might become more robust when pedo-climatic and agronomic factors are considered.

Associationobservedoriginal resultmeasured

Claim · model-written summary

The extent of rice yield decrease was correlated with ripening temperature.

Taxon: riceOryza sativae0
Treatment: ripening temperaturee1
Outcome: extent of yield decreasee1
Setting: Aomori prefecturee0

Not reportedDirection

Verbatim

e0
“distribution of rice yield in Aomori prefecture in 1971”
✓ located verbatim in the source · abstract, characters 37–92

e1
“relative correlation among the extent of yield decrease and “ripening temperature””
✓ located verbatim in the source · abstract, characters 430–512

Title

Studies on Forecast of Cool Weather Damage of Rice Growth in Aomori Prefecture

Izo ABE; Kiyoji ONO Journal of Agricultural Meteorology 1974. doi:10.2480/agrmet.30.117

Other claims from this paper (2)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Overapplication of fertilizer would decrease bamboo yield.

Taxon: Phyllostachys heterocycla var. pubescensPhyllostachys edulist0
Treatment: overapplicatione1
Outcome: yielde1
Direction: decreasee1

Not reportedComparator

Verbatim

t0
“Effect of Fertilizer Application on Phyllostachys heterocycla var. pubescens with Different Site Index”
✓ located verbatim in the source · title, characters 12–114

e1
“shoot and timber yield increased,but overapplication would decrease the yield”
✓ located verbatim in the source · abstract, characters 259–336

Title

Analysis on Effect of Fertilizer Application on Phyllostachys heterocycla var. pubescens with Different Site Index

Weng Pu-jin Journal of Southwest Forestry College 2001

Other claims from this paper (3)

Intervention effect Fertilizer application increased shoot and timber yield of bamboo stands.
Intervention effect Current annual fertilizer application made a significant difference in spring shoot yield, with the highest increment in the third year.
Intervention effect A fertilizer rate of 7 500 kg/hm2 gave the highest input-output ratio, 1:17.17, in the target stands.

Observationobservedoriginal resultprojected

Claim · model-written summary

Rice yield is predicted to decrease in many prefectures facing the Sea of Japan.

Taxon: riceOryza sativae0
Outcome: rice yielde0
Direction: decreasee0
Setting: prefectures facing the Sea of Japane0

Verbatim

e0
“Many prefectures facing the Sea of Japan are predicted to experience decrease in rice yield”
✓ located verbatim in the source · abstract, characters 1566–1657

Title

Estimation of the Impact of Climate Change on Japanese Rice Yield and Water Resources

Shunji Kotsuki; Kenji Tanaka 2013

Other claims from this paper (8)

Method / resource Simulated rice yields agreed with statistical data.
Method / resource Snowfall correction improved simulated river discharge.
Method / resource Dam operation module improved simulated river discharge.
Observation Climate change is predicted to strengthen water stress in many northeastern Japanese basins.
Observation Water stress would also increase in small basins.
Observation Climate change may mitigate low-temperature stress.
Observation Climate change may expand arable area.
Recommendation Regions should consider changing cultivation period to mitigate yield loss and water stress.

Associationauthor interpretationoriginal resultnegativeprojected

Claim · model-written summary

Above background temperature in south China, early rice yield was projected to decrease.

Taxon: early ricee0
Outcome: early rice yielde0
Direction: decreasee0
Setting: south Chinae0

Verbatim

e0
“above the background temperature in south China, the early rice yield will decrease”
✓ located verbatim in the source · abstract, characters 1635–1718

Title

Asymmetric Differences in the Effects of Average Air Temperature and Solar Radiation on Early Rice and Late Rice Yield

Shengbao Wei; Anchun Peng; Jing Liu; et al. Atmosphere 2021. doi:10.3390/atmos12121541

Other claims from this paper (13)

Intervention effectobservedreview summarynegativeprojected

Claim · model-written summary

Climate change is estimated to decrease wheat yield by 10-14%.

Taxon: wheatTriticum aestivume0
Treatment: CCe0
Outcome: wheat yielde0
Direction: decreasee0
Value: 10-14%e0

Not reportedComparator

Verbatim

e0
“By changing the environmental parameters, it is estimated that CC will lead to a 10-14% decrease in wheat yield.”
✓ located verbatim in the source · abstract, characters 479–591

Title

Effect of Climate Change on Wheat Yield and Water Productivity in Iran and the World

N. Heydari; F. Taran Iranica Journal of Energy and Environment 2024. doi:10.5829/ijee.2025.16.02.08

Other claims from this paper (11)

Intervention effect Climate change has adversely affected wheat yield, especially rain fed wheat in Iran and elsewhere.
Observation Some studies report wheat yield changes greater than the 10-14% estimate.
Mechanism Temperature increase and heat stress are identified as the most important factor in wheat climate impacts.
Intervention effect Climate change can reduce the wheat crop growth period.
Intervention effect Climate change can reduce the planting-to-flowering period.
Intervention effect Climate change can shorten the seed filling period.
Intervention effect Climate change can reduce the flowering-to-maturity and seed production period.
Recommendation Adaptation measures include heat-tolerant, low-water-requirement cultivars, longer-growing cultivars and planting date changes.
Recommendation Adaptation measures include improved on-farm water management, residue management and increased soil organic matter.
Recommendation Wheat adaptation strategies should focus on reducing temperature and heat stress effects, especially at critical growth stages.
Recommendation Climate effects on strategic crops should be mainstreamed and prioritized in national and sub-national research, especially in Iran, to ensure food security.

Observationobservedoriginal resultmixedmeasured

Claim · model-written summary

The mean yield increase or decrease at responsive sites was 400 kg ha −1.

Taxon: soybeanGlycine maxt0
Outcome: mean yield increase or decreasee0
Value: 400 kg ha −1e0
Setting: responsive sitese0

Verbatim

e0
“The mean yield increase or decrease for responsive sites was 400 kg ha −1 .”
✓ located verbatim in the source · abstract, characters 839–914

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

Title

Soybean Yield and Nutrient Composition as Affected by Early Season Foliar Fertilization

Mazhar U. Haq; Antonio P. Mallarino Agronomy Journal 2000. doi:10.2134/agronj2000.92116x

Other claims from this paper (10)

Intervention effect Foliar fertilizer treatments significantly increased yields at some of six responsive sites.
Intervention effect Foliar fertilizer treatments significantly decreased yields at some of six responsive sites.
Intervention effect The 3–8–15 fertilizer caused no leaf damage.
Intervention effect Other fertilizers caused little or no leaf damage.
Association Leaf damage was not clearly related to yield decreases.
Intervention effect Foliar fertilization seldom increased tissue N–P–K composition, nutrient uptake, or photosynthesis at R2.
Intervention effect Foliar fertilization seldom increased plant weight at R2.
Association A combination of nutrient availability, vegetative growth, and rainfall explained 27% of variation in yield response.
Association Positive yield responses tended to occur when soil or weather reduced plant growth and nutrient availability.
Recommendation Foliar fertilization across all conditions will not offset application costs.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Reducing potassium to N60P60K30 did not significantly decrease soybean yield.

Taxon: soybeanGlycine maxe0
Treatment: N60P60K30e0
Outcome: soybean yielde0
Direction: no significant decreasee0

Not reportedComparator

Verbatim

e0
“There was no significant decrease in soybean yield in the variant of the experiment with a decrease in the proportion of potassium in the composition of complete mineral fertilizer (N60P60K30)”
✓ located verbatim in the source · abstract, characters 1454–1646

Title

Productivity and quality of soybean seeds with different fertilization on podzolized chernozem

H.M. Hospodarenko; I.V. Prokopchuk; K. P. Leonova; et al. Collected Works of Uman National University of Horticulture 2020. doi:10.31395/2415-8240-2020-97-1-136-144

Other claims from this paper (7)

Intervention effect Different fertilizer regimes increased crop yield by 18–77 %.
Intervention effect N110P60K80 in rotation, including N60P60K60 under soybean, gave the highest seed yield of 3,02 t/ha.
Intervention effect Excluding nitrogen from N60P60K60 reduced yield by 26 %.
Intervention effect Excluding phosphorus from complete fertilizer reduced yield by 17 %.
Intervention effect Excluding potassium from complete fertilizer reduced yield by 11 %.
Intervention effect N60К60 produced the largest 1000-seed mass.
Intervention effect N60P60K60 and N60P60K30 produced the highest seed protein content.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

A 1 mm decrease in seasonal precipitation corresponded to a 0.736 kg/ha decrease in pea yield.

Taxon: peaLathyrus oleraceuse0
Treatment: total precipitation for the growing seasone0
Outcome: pea yieldse0
Direction: decreasee0
Value: 0.736 kg/hae0
Qualifier: 1 mme0

Verbatim

e0
“The 1 mm decrease in the total precipitation for the growing season will lead to a decrease in pea yields by an average of 0.736 kg/ha.”
✓ located verbatim in the source · abstract, characters 2051–2186

Title

Dependence of the Pea Grain Yield on Climatic Factors under Semi-Arid Conditions

Vasiliy Gudko; Alexander Usatov; Tatiana Minkina; et al. Agronomy 2024. doi:10.3390/agronomy14010133

Other claims from this paper (12)

“yield decrease”

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