Search claims · PlantClaims

Mechanismobservedoriginal resultnegativemeasured

Claim · model-written summary

Reduced pod number accounted for the yield decrease.

Taxon: soybeansGlycine maxt0
Outcome: decrease in seed yielde0
Qualifier: decrease in number of pods per plante0

Verbatim

e0
“The decrease in seed yield observed in both experimentsmore » was due to a decrease in number of pods per plant”
✓ located verbatim in the source · abstract, characters 1164–1275

t0
“soybeans”
✓ located verbatim in the source · title, characters 95–103

Title

Comparison of experimental designs to determine effects of acidic precipitation on field-grown soybeans

Levi Evans; Keith F. Lewin; M Patti; et al. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) 1982

Other claims from this paper (8)

Intervention effect Simulated acidic rain at pH 4.1 reduced soybean seed yield by 10.7 relative to pH 5.6.
Intervention effect Simulated acidic rain at pH 3.3 reduced soybean seed yield by 16.8 relative to pH 5.6.
Intervention effect Simulated acidic rain at pH 2.7 reduced soybean seed yield by 22.9% relative to pH 5.6.
Association Seed yield had a strong positive relation with rain pH in the first experiment.
Intervention effect In the unshielded experiment, pH 4.1 reduced soybean yield by 2.7 relative to pH 5.6.
Intervention effect In the unshielded experiment, pH 3.3 reduced soybean yield by 7.0 relative to pH 5.6.
Intervention effect In the unshielded experiment, pH 2.7 reduced soybean yield by 7.6 relative to pH 5.6.
Association In the second experiment seed mass rose with rain pH with a correlation coefficient of 0.97.

Observationobservedoriginal resultnegativesimulated

Claim · model-written summary

The largest maize yield decrease occurred with early August sowing.

Taxon: MAIZEZea mayst0
Treatment: initial sowing of Auguste0
Outcome: decreasee0
Direction: biggeste0
Setting: Auguste0

Verbatim

e0
“The biggest decrease took place in the initial sowing of August”
✓ located verbatim in the source · abstract, characters 756–819

t0
“WATER DEFICIENCY ON THE MAIZE GRAIN YIELD DECREASE IN THE CATARINENSE FAR WEST”
✓ located verbatim in the source · title, characters 0–78

Title

WATER DEFICIENCY ON THE MAIZE GRAIN YIELD DECREASE IN THE CATARINENSE FAR WEST

CLÍSTENES ANTÔNIO GUADAGNIN; EDGAR RICARDO SCHOFFEL; HELVIO DEBLI CASALINHO; et al. Revista Brasileira de Milho e Sorgo 2017. doi:10.18512/1980-6477/rbms.v16n1p61-71

Other claims from this paper (6)

Observation The Isareg model estimated average maize grain yield decrease of 25.1%.
Observation The smallest maize yield decrease occurred with late January to February sowings.
Observation Yield decrease varied by up to 3.9% among maturation cycles.
Method / resource Isareg was judged appropriate for estimating grain yield decrease.
Method / resource Isareg overestimated yield decrease when relative evapotranspiration exceeded 0.8.
Observation A 40% grain yield decrease had a 10.5% occurrence probability.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Late-rice yield tended to decrease with time compared with early-rice yield.

Taxon: RiceOryza sativat0
Outcome: late-rice yielde0
Direction: decreasee0
Comparator: early-rice yielde0

Not reportedTreatment

Verbatim

t0
“Rice Field”
✓ located verbatim in the source · title, characters 54–64

e0
“late-rice yield tended to decrease, compared with early-rice yield”
✓ located verbatim in the source · abstract, characters 374–440

Title

Yield Trends and Reasons for Their Change in Red-soil Rice Field with Long-term Organic Matter Circling

Xie Xiao-li 2007

Other claims from this paper (8)

Associationobservedreview summarynegativemeasured

Claim · model-written summary

Weed competition can decrease alfalfa yield.

Taxon: alfalfaMedicago sativae0
Interactor: Weedse0weed
Outcome: yieldse0
Direction: decreasee0

Verbatim

e0
“Weeds compete with alfalfa for water, nutrients, light, and space. This competition can decrease yields”
✓ located verbatim in the source · abstract, characters 0–103

Title

Weed Management in Alfalfa

William W. Witt UKnowledge (University of Kentucky) 1983

Other claims from this paper (4)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Pods per plant were chiefly responsible for yield decrease.

Taxon: soybeanGlycine maxt0
Organ / stage: podse0
Outcome: yield decreasee0
Direction: decreasee0

Verbatim

e0
“the component most responsible for yield decrease was the number of pods per plant”
✓ located verbatim in the source · abstract, characters 948–1030

t0
“Soybean”
✓ located verbatim in the source · title, characters 130–137

Title

The Interaction of Sowing Date and Water Availability in Determining Plant Architecture, Fruiting Pattern and Yield Components of Soybean (Glycine max L. Merr.)

P. Ceccon; L. Dalla Costa; R. Giovanardi; et al. Journal of Agronomy and Crop Science 1994. doi:10.1111/j.1439-037x.1994.tb00552.x

Other claims from this paper (9)

Intervention effect Water shortage restricted crop evapotranspiration.
Intervention effect Water shortage restricted water uptake depth.
Intervention effect Low water availability reduced architecture traits.
Intervention effect Late sowing reduced architecture traits.
Intervention effect Late sowing shifted stem seed allocation downward.
Intervention effect Reduced water supply shifted stem seed allocation downward.
Intervention effect Water stress only slightly affected unit seed weight.
Intervention effect Early sown soybean lost more yield under reproductive phase water shortage.
Intervention effect Late sown soybean lost more yield under vegetative phase water shortage.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 1440 g/10 a of boron, a decrease in seeds per pod was also involved in the yield decrease.

Taxon: Kidney BeanPhaseolus vulgarist0
Treatment: 1440 g/10 aの施用区e1
Outcome: 一莢内粒数e1
Direction: 低下e1

Not reportedComparator

Verbatim

e1
“1440 g/10 aの施用区では一莢内粒数の低下も関与した”
✓ located verbatim in the source · abstract, characters 514–544

t0
“Kidney Bean”
✓ located verbatim in the source · title, characters 72–83

Title

Effects of Boron Application on Seed Yield and Yield- Related Traits in Kidney Bean

Ichi SASAKI; Takuya KITABATAKE; Toshiki MATSUI; et al. Japanese Journal of Crop Science 2026. doi:10.1626/jcs.95.104

Other claims from this paper (15)

Intervention effect In trial 1, the FTE plot (citrate-soluble boron) raised kidney bean yield by 12% over the untreated plot (mean of cultivars and years).
Intervention effect In trial 1, the Agri-Ace plot (citrate-soluble boron and zinc) raised kidney bean yield by 9% over the untreated plot.
Intervention effect In trial 1, the water-soluble plot (water-soluble boron and zinc) raised kidney bean yield by 14% over the untreated plot.
Intervention effect Yield did not differ with or without zinc in the fertilizer materials.
Association Post-harvest soil content of boron alone showed a significant positive correlation with yield.
Mechanism The yield increase is considered to come from increased boron uptake.
Intervention effect At Ebetsu, yield peaked at boron application rates of 360-720 g/10 a.
Intervention effect At Obihiro, yield peaked at a boron application rate of 720 g/10 a.
Intervention effect Yield decreased at boron application rates of 1080 g/10 a or more.
Intervention effect The yield increase at the optimum boron rate relative to the untreated plot was mainly due to an increase in node number.
Intervention effect The yield decrease at 1080 g/10 a or more of boron was mainly due to fewer pods per node.
Observation At Ebetsu, post-harvest soil boron content exceeded the upper diagnostic limit of 1.3 ppm at 1080 g/10 a or more.
Observation At Obihiro, post-harvest soil boron content exceeded the upper diagnostic limit of 1.3 ppm at 1440 g/10 a.
Recommendation Applying about 360-720 g/10 a of boron is recommended as effective for increasing kidney bean yield.
Recommendation At this rate boron accumulation is not worrying, and continued application to kidney bean in a 3-4 year rotation is considered unproblematic.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

The largest barley monoculture yield decrease occurred in years three to five.

Taxon: barleyHordeum vulgaree0
Outcome: yield decreasee0
Direction: decreasee0
Qualifier: 3rd to 5th yeare0

Verbatim

e0
“Experiments have further shown that the biggest yield decrease occurs in the 3rd to 5th year of barley monoculture.”
✓ located verbatim in the source · abstract, characters 1463–1578

Title

Danish Experiences with Cereals in Monoculture¹

A. Jensen EPPO Bulletin 1975. doi:10.1111/j.1365-2338.1975.tb02477.x

Other claims from this paper (19)

Intervention effect Cereal monoculture led to yield depletion.
Mechanism take‐all was a main factor in cereal yield loss.
Mechanism eyespot was a main factor in cereal yield loss.
Observation New barley varieties were highly resistant to the cereal cyst nematode.
Mechanism The named parasites did not explain all yield losses.
Observation Barley monoculture yield declining the first 2–4 years.
Observation Barley monoculture yield remains stable after that.
Observation Barley monoculture take‐all declines after that.
Intervention effect Adding straw to the soil had little effect on barley yield or disease.
Intervention effect burning it had little effect on barley yield or disease.
Intervention effect Postharvest soil treatments had little effect.
Observation Barley monoculture yield decrease was usually minor on fertile soils in Denmark.
Intervention effect Postharvest soil treatment had little effect on disease and yield except on heavily weed infested land.
Observation The cereal root nematode remained a threat to oat and spring wheat.
Intervention effect Monocultures of different host plants reduced nematode populations.
Intervention effect Benomyl successfully controlled eyespot in winter wheat.
Intervention effect Benomyl successfully controlled eyespot in winter rye.
Observation Field chemical control of take-all appeared infeasible despite good laboratory tests.
Observation Breeding for take-all resistance was judged difficult and of doubtful economic value.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Branch pod compensation limited per plant seed yield decrease to 52%.

Outcome: per-plant seed yield decreasee0
Direction: decreasee0
Value: 52%e0

Not reportedTaxon

Verbatim

e0
“partial compensation by pods on the branches reduced mean per-plant seed yield decrease to 52%”
✓ located verbatim in the source · abstract, characters 999–1093

Title

Response of three Brassica species to high temperature stress during reproductive growth

S. V. Angadi; H. W. Cutforth; P. R. Miller; et al. Canadian Journal of Plant Science 2000. doi:10.4141/p99-152

Other claims from this paper (12)

Observation B. juncea and B. rapa had higher optimum temperatures than B. napus.
Intervention effect Moderate temperature stress left dry matter unaffected.
Intervention effect High temperature stress reduced dry matter.
Intervention effect The 35/15 °C treatment injured reproductive organs in all three species.
Intervention effect Heat at flowering affected yield more than heat at pod development.
Intervention effect Heat stress reduced main stem seed yield by a mean 89%.
Intervention effect Heat stress reduced fertile pods, thousand seed weight and seeds per pod.
Observation B. rapa was more heat sensitive than B. napus and B. juncea.
Observation Pods beyond a critical developmental threshold tolerated heat stress.
Observation Genotypes resumed flowering after recovery at 20/15 °C.
Observation B. napus showed the weakest recovery from severe flowering stress and formed abnormal pods.
Observation J90-4316 and Cutlass showed similar per plant yield responses.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

A yield decrease under soil heating occurred only with tall fescue during the summer.

Taxon: tall fescueLolium arundinaceume7
Outcome: yielde7
Direction: decreasee7
Qualifier: onlye7
Setting: during the summere7

Verbatim

e7
“A yield decrease occurred only with tall fescue during the summer”
✓ located verbatim in the source · abstract, characters 1308–1373

Title

Yield Response to Soil Warming: Agronomic Crops¹

K. A. Rykbost; L. Boersma; H. J. Mack; et al. Agronomy Journal 1975. doi:10.2134/agronj1975.00021962006700060001x

Other claims from this paper (9)

Intervention effect Soil heating increased yield of tall rescue by 19% over unheated plots.
Intervention effect Soil heating increased yield of sudangrass by about 50% over unheated plots.
Observation Yield increases from soil heating varied widely from year to year for the same crop.
Association The highest yield increases from soil heating occurred in years when yields on unheated plots were lowest.
Association Yield increases were highly significantly correlated with yields from unheated plots.
Association Soil heating appears most effective when climatic conditions and management factors are limiting.
Association Higher soil temperatures had their greatest effect on crop growth rates in early spring.
Intervention effect Heating increased the average soil temperature from 0 to 100 cm deep by about 10 C.
Intervention effect Heating increased the average temperature of the 0 to 10 cm soil layer by less than 3 C.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

The yield decrease of wheat increased with subsoil Al.

Taxon: wheatTriticum aestivume0
Treatment: subsoil Ale3
Outcome: yield decreasee3
Direction: increasede3

Verbatim

e0
“toxicity on wheat growth were studied”
✓ located verbatim in the source · abstract, characters 112–149

e3
“the yield decrease increased with subsoil Al”
✓ located verbatim in the source · abstract, characters 935–979

Title

Interacting effects of topsoil water and nitrogen supply on subsoil aluminium toxicity

S. J. Can; G. S. P. Ritchie Communications in Soil Science and Plant Analysis 1994. doi:10.1080/00103629409369268

Other claims from this paper (5)

“yield decrease”

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