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“yield decrease”

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plus 3 earlier · 1930s

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Intervention effectobservedoriginal resultpositivenot significant (as stated)measured

Claim · model-written summary

Combined Zn and Mn fertilizers increased tuber Zn and Mn percentages.

Taxon: PotatoSolanum tuberosumt0
Treatment: Zinc and manganese Fertilizers togethere0
Outcome: Zn and Mn percentagee0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“Zinc and manganese Fertilizers together increased Zn and Mn percentage and decrease P percentage in tubers, that they no significant”
✓ located verbatim in the source · abstract, characters 1660–1792

t0
“Potato (Solanum tuberosum L.)”
✓ located verbatim in the source · title, characters 84–113

Title

Effect of Zinc and Manganese Foliar Application on Yield, Quality and Enrichment on Potato (Solanum tuberosum L.)

Sayed Roholla Mousavi; Mohammad Galavi; Goudarz Ahmadvand Asian Journal of Plant Sciences 2007. doi:10.3923/ajps.2007.1256.1260

Other claims from this paper (14)

Intervention effect Zn and Mn application increased potato tuber yield per plant.
Intervention effect Zn and Mn application increased tuber dry matter percentage and specific weight.
Intervention effect Zn and Mn application increased tuber protein and starch contents.
Intervention effect Foliar Zn at 8 ppt produced 34170 kg ha-1 yield, 25% above control.
Intervention effect Foliar Mn at 4 ppt produced 33866 kg ha-1 yield, 15% above control.
Intervention effect Mn at 8 ppt decreased potato tuber quality compared with 2 and 4 ppt.
Intervention effect Mn at 8 ppt decreased potato tuber yield compared with 2 and 4 ppt.
Intervention effect Combined 8 ppt Zn and 4 ppt Mn gave maximum yield of 38950 kg ha-1.
Intervention effect Fertilizers significantly affected tuber element percentages.
Intervention effect Zinc increased tuber Zn percentage.
Intervention effect Zinc decreased tuber phosphorus percentage.
Intervention effect Manganese increased tuber Mn percentage.
Intervention effect Manganese had no significant effect on tuber Zn, P and K.
Intervention effect Combined Zn and Mn fertilizers decreased tuber P percentage without significance.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

In plants of the second sowing date, early fruiting branch removal gave no significant yield increase.

Taxon: cottonGossypium hirsutume0
Treatment: early fruiting branch removale7
Outcome: yielde1
Direction: no significant yield increasee1
Qualifier: plants of the second sowing datee1

Not reportedComparator

Verbatim

e0
“Bt-transgenic cotton plants with two different sowing dates were treated normally(CK),or by removing one(R1),two(R2) or three basal fruiting branches(R3)”
✓ located verbatim in the source · abstract, characters 0–153

e7
“For plants of the first sowing date,early fruiting branch removal significantly decreased the abscission and rotten boll rates and promoted seed yield over the two year period”
✓ located verbatim in the source · abstract, characters 903–1078

e1
“There was no significant yield increase in plants of the second sowing date;there was even a decrease for some treatments”
✓ located verbatim in the source · abstract, characters 1290–1411

Title

Effects of Early Fruiting Branch Removal on Growth,Development and Senescence Processes in Transgenic Bt Cotton(Gossypium hirsutum L.)

Lichao Zhai; Zhang Yongjiang; Liantao Liu; et al. 2012

Other claims from this paper (18)

Intervention effect Removal of early fruiting branches delayed the process of growth and development in cotton.
Intervention effect Removing one basal fruiting branch (R1) gave no difference from CK in total number of fruiting branches.
Intervention effect Removing two or three basal fruiting branches (R2 and R3) significantly lowered the total number of fruiting branches relative to CK.
Intervention effect Early fruiting branch removal had no obvious effect on the total fruiting nodes.
Intervention effect Early fruiting branch removal significantly increased the leaf area index (LAI) in plants of the first sowing date.
Intervention effect Removing one basal fruiting branch (R1) increased dry matter weight by 13.5% over CK in plants of the first sowing date.
Intervention effect Removing two basal fruiting branches (R2) increased dry matter weight by 17.5% over CK in plants of the first sowing date.
Intervention effect Removing three basal fruiting branches (R3) increased dry matter weight by 19.0% over CK in plants of the first sowing date.
Intervention effect Removing one basal fruiting branch (R1) decreased the abscission rate by 5.9% in plants of the first sowing date.
Intervention effect Removing two basal fruiting branches (R2) decreased the abscission rate by 6.4% in plants of the first sowing date.
Intervention effect Removing three basal fruiting branches (R3) decreased the abscission rate by 9.5% in plants of the first sowing date.
Intervention effect Removing one basal fruiting branch (R1) decreased the rotten boll rate by 3.8% in plants of the first sowing date.
Intervention effect Removing two basal fruiting branches (R2) decreased the rotten boll rate by 3.1% in plants of the first sowing date.
Intervention effect Removing three basal fruiting branches (R3) decreased the rotten boll rate by 4.3% in plants of the first sowing date.
Intervention effect Removing one basal fruiting branch (R1) enhanced seed cotton yield by 9.6%.
Intervention effect Removing two basal fruiting branches (R2) enhanced seed cotton yield by 8.1%.
Intervention effect In plants of the second sowing date, some treatments even decreased yield.
Intervention effect In plants of the second sowing date, early fruiting branch removal gave no significant difference in dry matter accumulation.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The yield increment of Kufri Himalini from 225 to 300 kg N ha-1 was not significant.

Taxon: potatoSolanum tuberosume0
Material: Kufri Himalinie2
Treatment: 225 kg N ha-1 to 300 kg N ha-1e3
Outcome: yield incremente3
Direction: not significante3
Comparator: 225 kg N ha-1e3

Verbatim

e0
“Average yield of potato cultivars increased significantly with increase in N supply up to 225 kg N ha-1, then tended to decrease slightly as nitrogen levels increased further”
✓ located verbatim in the source · abstract, characters 301–475

e2
“Yield of Kufri Himalini was increased with increase in N level up to 300 kg N ha-1”
✓ located verbatim in the source · abstract, characters 655–737

e3
“the yield increment from 225 kg N ha-1 to 300 kg N ha-1 was not significant”
✓ located verbatim in the source · abstract, characters 742–817

Title

Impact of nitrogen nutrition on productivity and nutrient use efficiency of potato (Solanum tuberosum L.) In an inceptisol of west Bengal, India

H Banerjee; K Ray; S Sarkar; et al. SAARC Journal of Agriculture 2016. doi:10.3329/sja.v13i2.26575

Other claims from this paper (10)

Intervention effect Average potato yield increased significantly with nitrogen supply up to 225 kg N ha-1 and then tended to decrease slightly.
Intervention effect Tuber yield of Kufri Shailja and Kufri Jyoti increased significantly up to 225 kg N ha-1 and decreased with further nitrogen.
Intervention effect Yield of Kufri Himalini increased with nitrogen up to 300 kg N ha-1.
Intervention effect Applying 150 kg N ha-1 instead of 225 kg N ha-1 decreased average potato tuber yield by 5.3%.
Intervention effect Applying 75 kg N ha-1 instead of 225 kg N ha-1 decreased average potato tuber yield by 18.7%.
Intervention effect Applying no nitrogen instead of 225 kg N ha-1 decreased average potato tuber yield by 65.1%.
Intervention effect Nitrogen use efficiency of potato decreased towards higher N levels for all cultivars.
Association Nitrogen use efficiency of Kufri Himalini was higher at all N levels.
Recommendation About 225 kg N ha-1 is the optimum nitrogen dose for higher potato tuber yield irrespective of cultivar.
Observation Kufri Himalini was the most efficient cultivar in nitrogen use.

Observationobservedoriginal resultnot significant (as stated)measured

Claim · model-written summary

Root number did not differ significantly among XY, FM and DK.

Taxon: maizeZea mayst0
Material: XY, FM and DKe0
Outcome: number of rootse0

Not reportedDirection

Verbatim

e0
“The difference in the number of roots of XY, FM and DK were not significant, so change in variety did not alleviate the decrease in the number of roots.”
✓ located verbatim in the source · abstract, characters 1095–1247

t0
“Maize”
✓ located verbatim in the source · title, characters 102–107

Title

Planting Density and Variety Modulated Root and Leaf Characteristics to Improve Grain Yield of Spring Maize

Qinglong Yang; Xiwen Shao; Yujun Cao; et al. International Journal of Agriculture and Biology 2020. doi:10.17957/ijab/15.1636

Other claims from this paper (11)

Association Increasing density increased leaf area index.
Association Increasing density reduced individual leaf area and net photosynthetic rate.
Intervention effect At 0–20 cm, root dry matter fell by 55.88% at D2 versus D1.
Intervention effect At 0–20 cm, root dry matter fell by 80.92% at D3 versus D1.
Intervention effect Root number fell by 31.18% at D2 versus D1.
Intervention effect Root number fell by 38.71% at D3 versus D1.
Association Yield and dry matter per plant declined as density increased.
Association Yield and dry matter per hectare rose from D1 to D2 and flattened from D2 to D3.
Intervention effect Two-year mean yield per plant decreased 34.10% at D2 versus D1.
Intervention effect Two-year mean yield per plant decreased 51.87% at D3 versus D1.
Recommendation The authors recommend approximately 60,000 plants ha-1 for spring maize yield.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Panicle number per plant did not significantly differ between NIL-qSBM1Kasalath and NPB.

Taxon: riceOryza sativat0
Material: NIL-qSBM1Kasalathe0
Treatment: NIL-qSBM1Kasalathe0
Outcome: panicle number per plante0
Direction: no significant differencee0
Comparator: NPBe0

Verbatim

e0
“Compared to NPB, the NIL-qSBM1Kasalath showed significant increase in biomass aboveground, plant height, grain number per panicle and grain yield per plant, but significant decrease in 1000-grain weight, with no significant difference in panicle number per plant”
✓ located verbatim in the source · abstract, characters 1126–1388

t0
“rice”
✓ located verbatim in the source · title, characters 42–46

Title

The SEEDLING BIOMASS 1 allele from indica rice enhances yield performance under low‐nitrogen environments

Jing Xu; Lianguang Shang; Jiajia Wang; et al. Plant Biotechnology Journal 2021. doi:10.1111/pbi.13642

Other claims from this paper (19)

Intervention effect NIL-qSBM1Kasalath increased aboveground biomass and plant height relative to NPB.
Intervention effect NIL-qSBM1Kasalath increased grain number per panicle relative to NPB.
Intervention effect NIL-qSBM1Kasalath increased grain yield per plant relative to NPB.
Intervention effect NIL-qSBM1Kasalath decreased thousand grain weight relative to NPB.
Observation SBM1 knockout mutants showed similar but greater trait variation than the NIL.
Observation SBM1 overexpression plants showed trait changes opposite to the NIL and knockout lines.
Intervention effect The NPB allele complementation restored the knockout phenotype.
Intervention effect The Kasalath allele complementation partly restored the knockout phenotype.
Observation SBM1 expression occurred in several organs with preferential expression in roots.
Observation SBM1 GFP localized to the plasma membrane.
Observation Three principal SBM1 haplotypes were identified among 1140 accessions.
Observation HapA was widespread in japonica whereas HapB and HapC were mainly in indica.
Observation HapB was the most productive of the three haplotypes in collected rice accessions.
Intervention effect Knockout increased and overexpression decreased seedling biomass relative to NPB across NH4NO3 conditions.
Intervention effect In a field trial NIL-SBM1Kasalath increased plant height, grain number and plot yield at both nitrogen rates.
Observation NIL-SBM1Kasalath had significantly higher nitrogen use efficiency.
Observation NIL-SBM1Kasalath had higher nitrogen uptake, transport and nitrate reductase activity than NPB.
Observation SBM1 interacted with OsMPK6, supported by yeast screening and follow up assays.
Mechanism SBM1 knockout effects on biomass and grain number genetically depended on OsMPK6.

Intervention effectobservedoriginal resultpositivenot significant (as stated)measured

Claim · model-written summary

Sulfur increased fruit juice vitamin C relative to control, without statistical significance.

Taxon: Citrus sinensis L. (cv. Valencia)Citrus sinensist0
Treatment: kükürte0
Outcome: meyve suyu C vitamini miktarınıe0
Direction: arttırmıştıre0
Comparator: kontrolee0

Verbatim

e0
“İstatistik anlamda önemli olmamakla birlikte kükürt, meyve suyu C vitamini miktarını kontrole göre arttırmıştır.”
✓ located verbatim in the source · abstract, characters 471–583

t0
“Citrus sinensis L. (cv. Valencia)”
✓ located verbatim in the source · title, characters 69–102

Title

Applications which decrease soil pH on yield and fruit properties in Citrus sinensis L. (cv. Valencia) grown in lime-alkaline soil.

Murat Güneri; Adalet Mısırlı; İbrahim Yokaş Muğla Sıtkı Koçman University Institutional Repository 2009

Other claims from this paper (2)

Intervention effect Elemental sulfur reduced soil pH in Valencia orange cultivation.
Intervention effect Sulfur application increased soil salinity.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Wild oats emerging at the 0.5–2.5 and 2.5–4 crop leaf stages caused non-significant barley yield losses.

Taxon: spring barleyHordeum vulgaret0
Treatment: 0⋅5–2⋅5, 2⋅5–4 crop leaf stagese1
Interactor: Avena fatuaAvena fatuat0weed
Outcome: yield lossese2
Direction: decreaseinferrede2

Not reportedComparator

Verbatim

t0
“effects of various fractions of an Avena fatua L. population on spring barley”
✓ located verbatim in the source · title, characters 33–110

e1
“wild oats emerging in the 0–0⋅5, 0⋅5–2⋅5, 2⋅5–4 crop leaf stages at densities of 54, 46, 15 m −2 respectively were allowed to compete all season with the crcp”
✓ located verbatim in the source · abstract, characters 223–381

e2
“caused 16%, and two non‐significant yield losses respectively”
✓ located verbatim in the source · abstract, characters 437–498

Title

Time of onset of competition and effects of various fractions of an Avena fatua L. population on spring barley

N.C.B. PETERS Weed Research 1984. doi:10.1111/j.1365-3180.1984.tb00592.x

Other claims from this paper (5)

Intervention effect Wild oats emerging at the 0–0.5 crop leaf stage caused a 16% barley yield loss in 1972.
Intervention effect Grain yield losses from Avena fatua were significant when it remained in the barley crop until the crop had 2.5–4.5 leaves.
Intervention effect Grain yield losses from Avena fatua were significant when it remained in the barley crop until the crop had 4.5–6.5 leaves.
Intervention effect Later-emerging Avena fatua did not compensate for early removal of earlier emergers by extra growth in barley.
Intervention effect Barley yield losses from Avena fatua occurred only when it remained in the crop until after the 6 leaf stage.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Other fiber-quality items did not differ significantly among treatments.

Taxon: CottonGossypium hirsutumt0
Treatment: water applicatione0
Outcome: other items related with fiber qualitye0
Comparator: among treatmentse0

Not reportedDirection

Verbatim

e0
“Lint percent, fiber uniformity and micronaire tend to decrease with increase in water application, but the differences of other items related with fiber quality among treatments are not significant.”
✓ located verbatim in the source · abstract, characters 668–866

t0
“Cotton”
✓ located verbatim in the source · title, characters 74–80

Title

Effects of Different Water Application on Lint Yield and Fiber Quality of Cotton under Drip Irrigation

Xiao Jun Acta Gossypii Sinica 2000

Other claims from this paper (11)

Association plant height increased with water application.
Association leaf area index increased with water application.
Association fruit branch increased with water application.
Association boll number increased with water application.
Association boll weight increased with water application.
Association water consumption increased with water application.
Association lint yield increased with water application.
Association Lint percent tended to decrease as water application increased.
Association fiber uniformity tended to decrease as water application increased.
Association micronaire tended to decrease as water application increased.
Recommendation The authors proposed a 0.70ET drip pattern with a 3450.0 m 3·hm 2 quota and month-specific irrigation intervals.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Moderate population in low-fertility zones yielded statistically equivalently to higher-fertility areas.

Taxon: soybeanGlycine maxt0
Treatment: moderate population (240,000 seeds ha−1)e0
Outcome: yieldse0
Direction: statistically equivalente0
Comparator: higher-fertility arease0

Verbatim

e0
“maintaining a moderate population (240,000 seeds ha−1) in these low-fertility zones produced yields statistically equivalent to those in higher-fertility areas”
✓ located verbatim in the source · abstract, characters 1477–1636

t0
“Soybean”
✓ located verbatim in the source · title, characters 53–60

Title

Rethinking Variable Rate Seeding: Why Can Increasing Soybean Population Decrease Yield in Nutrient-Limited Soils?

Fábio Henrique Rojo Baio; Job Teixeira de Oliveira; Fernando França da Cunha; et al. Crops 2025. doi:10.3390/crops5060078

Other claims from this paper (5)

Observation Potassium was identified as the most growth-limiting soil nutrient.
Intervention effect Increasing population from medium to high significantly decreased grain yield in low-potassium zones.
Mechanism Intensified competition increased plant height.
Mechanism Intensified competition reduced root development and photosynthetic efficiency.
Recommendation The authors recommend maintaining a moderate population in nutrient-limited zones.

Observationobservedoriginal resultnegativenot significant (as stated)measured

Claim · model-written summary

Mature dried leaves of IISR-Alleppy Supreme had lower essential oil yield than younger leaves.

Taxon: Curcuma longa L.Curcuma longat0
Material: IISR-Alleppy Supremee0
Organ / stage: dried-mature leavese0
Outcome: essential oils yielde0
Direction: decreasede0
Value: 0.61 %e0
Comparator: younger leavese0

Verbatim

e0
“The magnitude of decreased of essential oils yield in dried-mature leaves as compared to younger leaves was 62.59 % in Rajendra Sonia, 74 % in Morangia, 19.75 % in IISR-Roma, 2 % in IISR-Pratibha, 0.61 % in IISR-Alleppy Supreme and 18.30 % in Megha Turmeric-I. Although in the variety IISR-Alleppy Supreme and Megha Turmeric-I, there was an observed decrease in EO yield in the matured-dried leaves as compared to younge…” Show full quote
✓ located verbatim in the source · abstract, characters 864–1330

t0
“Curcuma longa L.”
✓ located verbatim in the source · title, characters 87–103

Title

Early harvest of leaves affects curcumin content and essential oils yield in turmeric (Curcuma longa L.)

M Teikur; A K Mishra; C Mukhim Plant Science Today 2025. doi:10.14719/pst.7479

Other claims from this paper (14)

Observation Mature dried leaves of Rajendra Sonia had lower essential oil yield than younger leaves.
Observation Mature dried leaves of Morangia had lower essential oil yield than younger leaves.
Observation Mature dried leaves of IISR-Roma had lower essential oil yield than younger leaves.
Observation Mature dried leaves of IISR-Pratibha had lower essential oil yield than younger leaves.
Observation Mature dried leaves of Megha Turmeric-I had lower essential oil yield than younger leaves.
Intervention effect Early leaf collection decreased curcumin content in Roma.
Intervention effect Early leaf collection decreased curcumin content in Morangia.
Intervention effect Early leaf collection decreased curcumin content in Rajendra Sonia.
Intervention effect Early leaf collection increased curcumin content in IISR-Pratibha.
Intervention effect Early leaf collection increased curcumin content in IISR-Alleppy Supreme.
Intervention effect Early leaf collection increased curcumin content in Megha Turmeric-1.
Observation Essential oils from both leaf stages had comparable reducing power.
Observation Essential oils from both leaf stages had comparable antioxidant properties.
Recommendation The authors suggest collecting leaves one month before rhizome maturity to raise essential oil yield with minimal curcumin effect.

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“yield decrease”

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