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“yield decrease”

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Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

PP333 could increase or decrease yield.

Taxon: soybeanGlycine maxt0
Treatment: PP333e0
Outcome: yielde0
Direction: increase or decreasee0

Not reportedComparator

Verbatim

e0
“PP333 applied could lead to plant height reduction, leaf smaller, yield increase or decrease”
✓ located verbatim in the source · abstract, characters 1073–1168

t0
“soybean”
✓ located verbatim in the source · title, characters 49–56

Title

Effect of culture factors on growth and yield of soybean II. Effect of fertilizer application, watering, growth regulate measures on yield

Wang Wen-xiu Chinese Journal of Oil Crop Scieves 2003

Other claims from this paper (11)

Intervention effect Seedling-stage fertilizer and watering promoted middle organ growth.
Intervention effect Flowering-stage fertilizer and watering increased upper organ growth.
Intervention effect Nitrogen and phosphorus fertilizers enhanced nutrient absorption in corresponding growth-centre organs.
Intervention effect Nitrogen fertilizer increased soybean nitrogen content.
Intervention effect Nitrogen fertilizer increased soybean phosphorus content.
Intervention effect Nitrogen fertilizer increased soybean potassium content.
Association Later fertilizer application tended to raise seed protein content.
Intervention effect Fertilization from initial flowering to 10 days later produced 15.6%～24.2% higher yield than the check.
Intervention effect PP333 reduced plant height.
Intervention effect PP333 made leaves smaller.
Intervention effect Huafu increased yield by 5.8%.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Cover crops showed no increase or a slight decrease in soybean seed yield in 2007 and 2009.

Taxon: SoybeanGlycine maxt0
Treatment: cover cropse0
Outcome: yielde0
Direction: no yield increase or slight yield decreasee0
Qualifier: 2007 and 2009e0

Not reportedComparator

Verbatim

e0
“in 2007 and 2009 no yield increase or slight yield decrease was shown by the cover crops”
✓ located verbatim in the source · abstract, characters 1176–1264

t0
“Soybean”
✓ located verbatim in the source · title, characters 10–17

Title

Improving Soybean Performance in the Northern Great Plains through the Use of Cover Crops

Kurt J. Dagel; Shannon L. Osborne; Tom E. Schumacher Communications in Soil Science and Plant Analysis 2014. doi:10.1080/00103624.2014.884108

Other claims from this paper (5)

Intervention effect Cover crops did not negatively affect most soybean plant parameters.
Intervention effect Radish plus slender wheatgrass increased soybean seed yield in 2008.
Intervention effect Turnips plus slender wheatgrass increased soybean seed yield in 2008.
Association Tillage practice and planting population strongly influenced soybean seed yield.
Association Tillage practice and planting population strongly influenced soybean seed quality.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Ethephon changed husked yield from an 8% increase to an 18% decrease across rates, timings and seasons.

Taxon: sweet corne1
Treatment: ethephone0
Outcome: husked yielde0
Value: 8% increase in yield to an 18% decreasee0

Not reportedComparatorDirection

Verbatim

e0
“Effects of ethephon on husked yield varied from an 8% increase in yield to an 18% decrease, depending on rate, timing, and season”
✓ located verbatim in the source · abstract, characters 582–711

e1
“sweet corn (Zea mays L.)”
✓ located verbatim in the source · abstract, characters 165–189

Title

Ethephon and Mechanical Topping Influence Growth, Yield, and Lodging of Sweet Corn

A.D. Bratsch; H.J. Mack HortScience 1990. doi:10.21273/hortsci.25.3.291

Other claims from this paper (8)

Intervention effect Ethephon reduced plant height by 12% to 26%.
Intervention effect Application timing determined where internode lengths fell.
Intervention effect Ethephon at tassel elongation reduced ear height more than applications one or two weeks later.
Intervention effect Topping reduced yield in one of four experiments.
Intervention effect Ethephon at 0.28 kg·ha -1 reduced ear length in two of four experiments.
Intervention effect After a helicopter fly-over, 66% of topped plants lodged compared with 87% untreated.
Observation Lodging averaged 51% under ethephon at 0.28 kg·ha -1 at tassel elongation in experiments 2–4.
Association Lodging tended to be least with ethephon treatments giving the largest plant or ear height reduction.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Chemical fertilization reduction did not decrease fruit yield and quality, except for the 1/3N treatment.

Taxon: Bayberryt1
Treatment: Chemical fertilization reductione5
Outcome: fruit yield and qualitye5
Direction: did not decreasee5
Qualifier: except for the 1/3N treatmente5

Not reportedComparator

Verbatim

t1
“Bayberry Orchard”
✓ located verbatim in the source · title, characters 121–137

e5
“Chemical fertilization reduction did not decrease fruit yield and quality, except for the 1/3N treatment”
✓ located verbatim in the source · abstract, characters 764–868

Title

The Appropriate Reduction of NitrogenFertilization Enhances Soil Qualitywithout Compromising Fruit Yieldand Quality in a Bayberry Orchard

Yichao Chen; Lu Xiang; Fei Li; et al. Polish Journal of Environmental Studies 2025. doi:10.15244/pjoes/204242

Other claims from this paper (6)

Intervention effect Chemical fertilizer reduction significantly increased soil pH and organic matter in the bayberry orchard.
Intervention effect Chemical fertilizer reduction decreased available nitrogen and phosphorus contents in 2022 and 2023.
Intervention effect Reduction of chemical P fertilizer enhanced the availability of Si, S, Mn and Cu in the bayberry orchard.
Intervention effect Reduction of chemical P fertilizer had no impact on the availability of Mo, Fe and B.
Intervention effect The soil quality index was higher for the N and 2/3N treatments.
Association Soil quality index and soil pH were the most important driving factors regulating fruit yield under chemical fertilizer reduction practices.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Foliar peptide fertilizers caused no fresh shoot yield change or a slight decrease with Zn-peptide.

Taxon: lettuceLactuca sativat0
Treatment: Zn-peptide treatmente0
Outcome: fresh shoot yielde0
Direction: slight decreasee0

Not reportedComparator

Verbatim

t0
“lettuce”
✓ located verbatim in the source · title, characters 121–128

e0
“foliar treatments with peptides-based fertilizers induced no fresh shoot yield variations or a slight decrease in the case of Zn-peptide treatment”
✓ located verbatim in the source · abstract, characters 428–574

Title

Foliarly applied biochelates as an eco-friendly strategy for biofortification with iron and zinc of hydroponically grown lettuce

Iqra Bashir; Marzia Leporino; José Carlos Laban Lliuya; et al. Scientia Horticulturae 2026. doi:10.1016/j.scienta.2026.114965

Other claims from this paper (15)

Intervention effect Fe-peptide increased lettuce leaf iron concentration by up to 690% versus control.
Intervention effect Zn-peptide increased lettuce leaf zinc concentration by 222% versus control.
Observation Fertilizers induced cultivar-specific changes in primary and secondary metabolism.
Intervention effect Aquino shoot fresh weight and root fresh and dry weight increased, especially with peptide and Zn-peptide.
Observation Aquino leaf total amino acids, vitamin C, and soluble carbohydrates increased.
Observation Barlack had a stronger antioxidant response, DPPH activity, and higher leaf flavonoids and anthocyanins.
Intervention effect Peptide fertilizers reduced soluble carbohydrates and total anthocyanins in both cultivars.
Intervention effect Peptide fertilizers reduced vitamin C in Aquino leaves.
Intervention effect Peptide fertilizers reduced amino acids in Barlack leaves.
Intervention effect Peptide treatment increased amino acids in Aquino leaves.
Intervention effect Zinc peptide reduced Barlack shoot dry biomass.
Intervention effect Zinc peptide reduced Barlack leaf total phenol and antioxidant activity.
Intervention effect Zn-peptide and peptide treatments reduced leaf phosphorus in both cultivars.
Intervention effect Zn-peptide and peptide treatments increased leaf boron concentration in both cultivars.
Recommendation The authors support cultivar-specific peptide biochelates for targeted lettuce biofortification.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Delaying sowing and increasing density changed the yield of Hefeng 50 in an increase-then-decrease trend.

Taxon: soybeanGlycine maxe0
Material: Hefeng 50e0
Treatment: sowing date delayed and density increasede1
Outcome: yielde1
Direction: increase-and-then-decrease trende1

Not reportedComparator

Verbatim

e0
“New soybean variety Hefeng 50”
✓ located verbatim in the source · abstract, characters 0–29

e1
“with the sowing date delayed and density increased,the yield of Hefeng 50 showed increase-and-then-decrease trend”
✓ located verbatim in the source · abstract, characters 313–426

Title

Influence of Sowing Date and Density on Oil Content and Yield of High-oil and High-yield Soybean Variety Hefeng 50

Zhixin Wang 2009

Other claims from this paper (4)

Intervention effect Delaying the sowing date decreased the oil content of soybean Hefeng 50.
Intervention effect Planting density had no obvious influence on the oil content of soybean Hefeng 50.
Intervention effect Planting density of 25×10^4 plants/ha with a 9 May sowing date gave the highest yield of Hefeng 50.
Intervention effect Planting density of 25×10^4 plants/ha with a 9 May sowing date gave higher oil content in Hefeng 50.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Bacterial inoculation changed maize seedling average yield from a 50% decrease to a 70% increase versus controls.

Taxon: maizeZea mayse0
Treatment: bacterial inoculatione0
Interactor: bacteriale0symbiont
Outcome: average yielde0
Value: 50% decrease to a 70% increasee0
Comparator: controlse0

Not reportedDirection

Verbatim

e0
“In vitro bacterial inoculation on maize seedlings resulted in changes of average yield ranging from a 50% decrease to a 70% increase over controls.”
✓ located verbatim in the source · abstract, characters 340–487

Title

Root colonization efficiency, plant-growth-promoting activity and potentially related properties in plant-associated bacteria

Gandi Forlani; Manuela Branzoni; Roberta Pastorelli; et al. Institutional Research Information System University of Ferrara (University of Ferrara) 1995

Other claims from this paper (7)

Observation Most isolates grew on nutrients exuded by maize and wheat roots.
Association Bacterial colonization ability varied greatly by crop.
Observation Significant nitrogen fixation was detectable only in Azotobacter and Azospirillum isolates.
Observation Siderophore production was restricted to Enterobacter.
Observation Pectinase production was restricted to Bacillus.
Observation Indoleacetic acid synthesis was more widespread.
Intervention effect Root exudates did not stimulate the measured bacterial activities.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

The positive effect of a green manure crop could not substitute for the yield decrease from leaving 25% of the area out of production.

Treatment: green manure crope1
Outcome: yield decreasee1
Direction: could not substitutee1

Not reportedTaxonComparator

Verbatim

e1
“The positive effect of a green manure crop could not substitute for the yield decrease from leaving 25% of the area out of produc-tion”
✓ located verbatim in the source · abstract, characters 774–908

Title

Crop production during the first course of an organic crop rotation trial in Denmark

Jørgen E. Olesen; Margrethe Askegaard; Ilse Ankær Rasmussen Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture) 2000

Other claims from this paper (3)

Intervention effect Manure significantly increased grain yield of the cereal crops in most cases.
Intervention effect The positive effects of catch crops were mainly observed in spring cereals.
Intervention effect The largest rotation yields were obtained in the crop rotation without a green manure crop.

Intervention effectobservedoriginal resultmixednot significant (as stated)measured

Claim · model-written summary

Starch yield ranged from a 5.0% decrease to a 45.1% increase after grafting, without a significant difference.

Outcome: starch yielde0
Value: -5.0%-45.1%e0

Not reportedTaxonTreatmentComparatorDirection

Verbatim

e0
“The starch yield increased-5.0%-45.1%,the difference was not significant.”
✓ located verbatim in the source · abstract, characters 599–672

Title

Observation on Wild Cassava Biological Characteristics and Grafting Technology

Jun Li Anhui nongye kexue 2012

Other claims from this paper (7)

Observation Wild cassava leaf area exceeded SC205 by 308%.
Observation Wild cassava leaf thickness exceeded SC205 by 137%.
Observation Wild cassava plant height exceeded SC205 by 186%.
Observation Wild cassava crown diameter exceeded SC205 by 177%.
Observation Wild cassava stem diameter exceeded SC205 by 165%.
Intervention effect Grafting increased fresh cassava yield by 14.9%-109.3% over the control.
Intervention effect GR891 and GR5 grafting combinations had higher yield, starch yield and starch content than the control.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Soil Zn application allowed a lower N rate with only a small decrease in barley grain yield.

Taxon: barleyHordeum vulgaree0
Treatment: Zn applied to the soile0
Outcome: barley grain yielde0
Direction: decreasee0
Qualifier: reduction in the rate of Ne0

Not reportedComparator

Verbatim

e0
“The Zn applied to the soil permitted a reduction in the rate of N with only a small decrease in barley grain yield and nutritional value.”
✓ located verbatim in the source · abstract, characters 1234–1371

Title

Zinc application in conjunction with urea as a fertilization strategy for improving both nitrogen use efficiency and the zinc biofortification of barley

Demetrio Gonzalez; Patricia Almendros; Ana Obrador; et al. Journal of the Science of Food and Agriculture 2019. doi:10.1002/jsfa.9681

Other claims from this paper (9)

Intervention effect Combined Zn and N increased barley yield.
Intervention effect Combined Zn and N increased zinc content throughout barley plants.
Intervention effect Combined Zn and N increased barley grain protein content.
Intervention effect A 5 kg ha −1 Zn dose significantly increased bioavailable soil Zn.
Intervention effect A 5 kg ha −1 Zn dose significantly raised Zn concentration in barley material.
Intervention effect A 5 kg ha −1 Zn dose significantly raised barley grain protein content.
Association Leaf-to-grain zinc remobilization depended on zinc availability and was crucial only at low bioavailability.
Intervention effect A 5 kg ha −1 Zn dose enhanced agronomic nitrogen efficiency by 15.5 kg grain kg −1 N.
Intervention effect Soil Zn application allowed a lower N rate with only a small decrease in barley nutritional value.

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