Search claims · PlantClaims

2010s 107

Recommendationhypothesisoriginal resultpositivebasis n/a

Claim · model-written summary

For high-yield producers, moderate stover harvest may decrease fuel use.

Taxon: CornZea mays subsp. mayst0
Treatment: moderate stover harveste6
Outcome: fuel usee6
Direction: decreasee6

Verbatim

e6
“moderate stover harvest may actually decrease fuel use”
✓ located verbatim in the source · abstract, characters 1422–1476

t0
“Corn Grain, Stover Yield”
✓ located verbatim in the source · title, characters 0–24

Title

Corn Grain, Stover Yield and Nutrient Removal Validations at Regional Partnership Sites

Douglas L. Karlen; Stuart J. Birrell; Jane M. F. Johnson; et al. Iowa State University Digital Repository (Iowa State University) 2012

Other claims from this paper (6)

Associationobservedoriginal resultnegativesimulated

Claim · model-written summary

Yield decrease was associated with shorter growth duration together with increasing temperature.

Taxon: riceOryza sativae0
Treatment: increasing temperaturee7
Outcome: Decrease in yielde7
Direction: Decreasee7
Qualifier: lowering growth duratione7

Verbatim

e0
“impact of climate change on rice production”
✓ located verbatim in the source · abstract, characters 529–572

e7
“Decrease in yield were mainly associated with lowering growth duration along with increasing temperature”
✓ located verbatim in the source · abstract, characters 2152–2256

Title

Modeling the sensitivity of CERES-Rice model: An experience of Nepal

A Lamsal; LP Amgai; A Giri Agronomy Journal of Nepal 2013. doi:10.3126/ajn.v3i0.8982

Other claims from this paper (15)

Method / resource The CSM-CERES-Rice model had an RMSE of 747.35 kg/ha for grain yield.
Method / resource The CSM-CERES-Rice model had a D-stat of 0.793 for grain yield.
Method / resource The CSM-CERES-Rice model had an RMSE of 1.106 days for anthesis.
Method / resource The CSM-CERES-Rice model had an RMSE of 2.58 days for maturity.
Method / resource The CSM-CERES-Rice model had a D-stat of 0.99 for anthesis and maturity.
Method / resource The CSM-CERES-Rice model had an RMSE of 0.004 kg/ha for individual grain weight.
Method / resource The CSM-CERES-Rice model had a D-stat of 0.633 for individual grain weight.
Intervention effect Under decreasing climatic scenarios, simulated Prithivi yield increased by 62%.
Intervention effect Under decreasing climatic scenarios, simulated Masuli yield increased by 41%.
Intervention effect Under decreasing climatic scenarios, simulated Sunaulo Sugandha yield increased by 42%.
Intervention effect Under increasing climate change scenarios, simulated Prithivi yield declined by 80%.
Intervention effect Under increasing climate change scenarios, simulated Masuli yield declined by 46%.
Intervention effect Under increasing climate change scenarios, simulated Sunaulo Sugandha yield declined by 40%.
Association Temperature was the most sensitive factor for simulated rice yield potential compared with other factors.
Association Hybrid rice showed more vulnerability to climate change than the other cultivars.

Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors conclude that TE application is a potential strategy to decrease lodging probability without affecting sunflower yield.

Taxon: sunflowerHelianthus annuuse0
Treatment: application of TEe0
Outcome: decrease lodging probability without affecting sunflower yielde0

Verbatim

e0
“the application of TE is a potential strategy to decrease lodging probability without affecting sunflower yield”
✓ located verbatim in the source · abstract, characters 943–1054

Title

Are plant growth retardants a strategy to decrease lodging and increase yield of sunflower?

Marcia Eugenia Amaral Carvalho; Paulo Roberto de Camargo e Castro; Marcos Vinicius de Castro Ferraz Junior; et al. Comunicata Scientiae 2016. doi:10.14295/cs.v7i1.1286

Other claims from this paper (7)

Intervention effect Trinexapac-ethyl (TE) decreased sunflower plant height by 16.9%.
Intervention effect Maleic hydrazide (MH) decreased sunflower plant height by 35.9%.
Intervention effect Only TE positively influenced capitulum diameter, by 46.7% compared with control at 60 days after planting.
Intervention effect Only TE positively influenced capitulum dry mass, by 311% compared with control at 60 days after planting.
Intervention effect At 81 DAP, capitulum dry mass did not differ between control and TE-treated plants.
Intervention effect MH impaired capitulum diameter by 92.9%.
Intervention effect MH impaired capitulum dry mass by 74.7%.

2020s 80

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Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors infer that managing the identified factors could decrease the soybean yield gap.

Taxon: soybeanGlycine maxe0
Outcome: decrease the yield gape0

Verbatim

e0
“managing magnitude of these variables will decrease the yield gap in soybean crop”
✓ located verbatim in the source · abstract, characters 851–932

Title

Farm level yield gap analysis in soybean crop in Ahilyanagar district of Maharashtra State

Prajakta P Nikam; Manohar B Dhadwad; Kunal P Pawar; et al. International Journal of Agriculture Extension and Social Development 2025. doi:10.33545/26180723.2025.v8.i6a.1991

Other claims from this paper (9)

Observation 30.73 per cent of growers reported a low yield gap.
Observation 23.96 percent of growers reported a medium yield gap.
Observation Mean YGI was 10.04 per cent.
Observation Mean YGII was 16.11 per cent.
Observation Mean YG III was 29.06 per cent.
Association Land holding significantly contributed to the soybean yield gap.
Association Annual income significantly contributed to the soybean yield gap.
Association Management practices significantly contributed to the soybean yield gap.
Association Water stress significantly contributed to the soybean yield gap.

Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors conclude prohexadione calcium can decrease vine growth and increase yield in virginia and runner peanut.

Taxon: peanutArachis hypogaeae0
Treatment: Prohexadione calciume0
Outcome: decrease vine growth and increase yielde0

Verbatim

e0
“Prohexadione calcium can be beneficial in virginia market type and runner market type peanut cultivars to decrease vine growth and increase yield.”
✓ located verbatim in the source · abstract, characters 2121–2267

Title

Influence of Prohexadione Calcium Rate on Growth and Yield of Peanut (Arachis hypogaea)

S.P. Studstill; W.S. Monfort; R.S. Tubbs; et al. Peanut Science 2020. doi:10.3146/ps20-11.1

Other claims from this paper (8)

Intervention effect Treated peanut had greater row definition.
Intervention effect Prohexadione calcium often shortened peanut main stem height, varying by location and year.
Intervention effect In virginia market type small plots, average mainstem height was 23 cm with prohexadione calcium versus 26 cm untreated.
Intervention effect Prohexadione calcium did not significantly raise yield in any small plot experiment.
Intervention effect Reduced prohexadione calcium rates significantly increased yield in all large on-farm experiments.
Intervention effect Across on-farm experiments, yield increases for all treatments ranged from 453 to 731 kg/ha.
Intervention effect The 0.75x rate gave the greatest return on investment, increasing revenue by $210 ha−1.
Association The authors infer a stronger growth and yield response where soil variability is greater.

Recommendationhypothesisoriginal resultpositivebasis n/a

Claim · model-written summary

Own sunflower seed production is expected to decrease the cost price, with yield equal to imported hybrids.

Taxon: SunflowerHelianthus annuuse0
Outcome: cost pricee2
Direction: decreasee2
Comparator: imported hybridse2

Verbatim

e0
“Sunflower is a main oil seed crop in Bulgaria”
✓ located verbatim in the source · abstract, characters 0–45

e2
“the cost price will decrease sharply and the obtainable yield will equal the productivity of the imported hybrids”
✓ located verbatim in the source · abstract, characters 1165–1278

Title

Technological solutions in sunflower hybrid production

Galin Georgiev Bulgarian Journal of Crop Science 2025. doi:10.61308/emkm6105

Other claims from this paper (1)

Recommendation Own seed production of Bulgarian sunflower hybrids is a partial solution to sunflower production problems.

2000s 50

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Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Special attention should be paid to the decrease of additive variance for yield in QPM breeding.

Taxon: maizeZea mayst0
Outcome: decrease of additive variance for yield traite4

Verbatim

t0
“maize inbred lines with quality protein in Sichuan”
✓ located verbatim in the source · title, characters 37–87

e4
“Special attention should be paid to the decrease of additive variance for yield trait,because this trend was the most possibly accompanied by genetic base narrow”
✓ located verbatim in the source · abstract, characters 498–659

Title

Genetic potential and utilization of maize inbred lines with quality protein in Sichuan

Kang Ji Xi'nan nongye xuebao 2003

Other claims from this paper (1)

Observation Genetic variability of most traits of quality protein maize was significant and could be utilized for QPM improvement.

Observationauthor interpretationoriginal resultnegativebasis n/a

Claim · model-written summary

A decrease in sugarcane yield may financially challenge many mills.

Taxon: sugarcanee0
Outcome: financially challenge many millse2
Qualifier: a decreasee2

Verbatim

e0
“similar to that expected in most sugarcane producing nations”
✓ located verbatim in the source · abstract, characters 110–170

e2
“Capacity within the sugar industry value chain is considered sufficient to absorb an increase in yield, but a decrease may financially challenge many mills”
✓ located verbatim in the source · abstract, characters 1017–1172

Title

Evaluating the impact of and capacity for adaptation to climate change on sectors in the sugar industry value chain in Australia.

S. Park; Mark Howden; Heidi Horan XXVI Congress, International Society of Sugar Cane Technologists, ICC, Durban, South Africa, 29 July - 2 August, 2007. 2007

Other claims from this paper (8)

Associationauthor interpretationoriginal resultnegativebasis n/a

Claim · model-written summary

Suni-bug damage is concluded to decrease profits of durum wheat millers substantially by affecting semolina yield and quality.

Taxon: durum wheatTriticum turgidum subsp. durume1
Treatment: suni‐bug damagee1
Outcome: profits of durum wheat millerse1
Direction: decreasee1

Verbatim

e1
“It was concluded that suni‐bug damage would decrease profits of durum wheat millers substantially by affecting semolina yield and quality”
✓ located verbatim in the source · abstract, characters 1164–1301

Title

Effects of Suni Bug (Eurygaster spp.) Damage on Milling Properties and Semolina Quality of Durum Wheats (Triticum durum L.)

Hamit Koksel; Tulin Ozderen; Burcu Olanca; et al. Cereal Chemistry 2009. doi:10.1094/cchem-86-2-0181

Other claims from this paper (7)

Intervention effect Semolina yield of durum wheat cultivars decreased significantly as suni-bug damage level increased.
Intervention effect The loss of semolina yield was greater than the decrease in total yield of semolina plus flour under suni-bug damage.
Intervention effect Ash content of semolina increased significantly in all cultivars with increasing suni-bug damage.
Association Falling number values were not correlated with suni-bug damage level.
Observation Amylase activities of durum wheat semolina samples were quite low.
Intervention effect Pasting properties of durum wheat semolina did not differ to a great extent depending on suni-bug damage level.
Intervention effect Gluten quality of durum wheat semolina deteriorated substantially as suni-bug damage level increased.

1990s 18

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Mechanismauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The decrease in F′v/F′m and qP explains the decrease in the actual quantum yield of PSII electron transport in senescing wheat leaves

Taxon: wheatTriticum aestivume0
Outcome: actual quantum yield of PSII electron transporte3
Qualifier: decrease in bothe3

Verbatim

e0
“Analyses of chlorophyll fluorescence were undertaken to investigate the alterations in photosystem II (PSII) function during senescence of wheat ( Triticum aestivum L. cv. Shannong 229) leaves”
✓ located verbatim in the source · abstract, characters 0–192

e3
“The decrease in both F' v /F' m and q P explained the decrease in the actual quantum yield of PSII electron transport”
✓ located verbatim in the source · abstract, characters 986–1103

Title

Changes in photosystem II function during senescence of wheat leaves

Congming Lu; Jianhua Zhang Physiologia Plantarum 1998. doi:10.1034/j.1399-3054.1998.1040212.x

Other claims from this paper (8)

Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

A grower could accept a tomato yield decrease if quality increases sufficiently.

Taxon: tomatoSolanum lycopersicumt0
Outcome: accept a decrease in yielde0
Qualifier: if there were a sufficient increment in quality of the producte0

Verbatim

t0
“GREENHOUSE TOMATO CROP”
✓ located verbatim in the source · title, characters 75–97

e0
“a grower could accept a decrease in yield if there were a sufficient increment in quality of the product”
✓ located verbatim in the source · abstract, characters 2416–2520

Title

COMBINED EFFECT OF CLIMATE AND CONCENTRATION OF THE NUTRIENT SOLUTION ON A GREENHOUSE TOMATO CROP. II: YIELD QUANTITY AND QUALITY

C. Stanghellini; W.Th.M. van Meurs; F. Corver; et al. Acta Horticulturae 1998. doi:10.17660/actahortic.1998.458.27

Other claims from this paper (12)

Intervention effect High EC significantly reduced yield in greenhouse tomato relative to 2 dS/m.
Intervention effect Low transpiration mitigated the effect of high EC on tomato yield relative to high transpiration.
Intervention effect Under high EC, high transpiration reduced marketable tomato yield by 30 percent relative to low transpiration.
Intervention effect Under high EC, high transpiration gave tomato fruits about 25 percent smaller than low transpiration.
Intervention effect Under high EC, high transpiration increased blossom-end rot incidence to 20 percent relative to low transpiration.
Intervention effect Low transpiration with high EC reduced tomato size and yield by 15 percent relative to 2 dS/m.
Observation Under low transpiration, incidence of blossom-end rot was only 2 percent.
Intervention effect Dry matter and sugar content of tomato fruit were higher under high EC than under 2 dS/m.
Observation Total dry matter yield of tomato was the same across treatments except the high EC, high transpiration treatment.
Observation In the high EC, high transpiration treatment, blossom-end rot reduced marketable tomato dry matter by 25 percent.
Observation Tomato fruit elasticity was not affected by any treatment once size differences were accounted for.
Recommendation Appropriate use of indoor climate tools can offset the effect of high salinity of irrigation water on tomato.

Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors favor frequent irrigation to decrease surface relocation of water, despite only slight yield gains.

Taxon: Grain SorghumSorghum bicolort0
Outcome: Frequent irrigation intervalse0
Qualifier: decrease surface relocation of watere0

Verbatim

e0
“Frequent irrigation intervals added only slightly to yield but are desirable in order to decrease surface relocation of water from high intensity LEPA application”
✓ located verbatim in the source · abstract, characters 2051–2213

t0
“Grain Sorghum”
✓ located verbatim in the source · title, characters 19–32

Title

LEPA Irrigation of Grain Sorghum with Varying Water Supplies

J. P. Bordovsky; W. M. Lyle Transactions of the ASAE 1996. doi:10.13031/2013.27706

Other claims from this paper (9)

Intervention effect A 3.5-day irrigation interval gave the highest mean sorghum yield, 7.57 Mg ha1, significantly above longer intervals.
Intervention effect Yield differed significantly among preplant only, 0.4 BI and 0.7 BI quantities.
Intervention effect Yield did not differ among 0.7, 1.0 and 1.3 BI treatments.
Intervention effect The 0.7 BI treatment had almost double the irrigation water use efficiency of 1.3 BI.
Observation Seasonal WUE was 1.69 kg m3 at 0.4 BI.
Intervention effect Preplant-only WUE was 1.52 and equaled the 0.7 BI treatment.
Intervention effect The 3.5-day interval yielded higher WUE than the 14-day interval.
Intervention effect Applicator location had no significant response in yield, IWUE or WUE.
Recommendation The authors advise deficit seasonal LEPA irrigation near 0.7 BI when preplant soil water is adequate.

1980s 6

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Recommendationauthor interpretationoriginal resultnegativebasis n/a

Claim · model-written summary

The authors suggest ethephon may decrease grain yield without lodging.

Taxon: maizeZea mayst0
Outcome: decrease grain yielde0
Qualifier: in the absence of lodginge0

Verbatim

e0
“may decrease grain yield in the absence of lodging because of its potential deleterious effect on kernel number and growth”
✓ located verbatim in the source · abstract, characters 1708–1830

t0
“Maize”
✓ located verbatim in the source · title, characters 39–44

Title

Growth, Yield, and Yield Components of Maize as Influenced by Ethephon

W. J. Cox; H. F. Andrade Crop Science 1988. doi:10.2135/cropsci1988.0011183x002800030023x

Other claims from this paper (11)

Intervention effect Ethephon did not affect phytomass, NAR, or CGR in the dry 1985 season.
Intervention effect Ethephon reduced phytomass, NAR, and CGR in the wet 1986 season.
Association Plant density and hybrid did not influence growth response to ethephon.
Intervention effect Ethephon reduced lodging by 64%.
Intervention effect Ethephon had no overall effect on grain yield.
Intervention effect Ethephon increased Cornell 281 grain yield from 7.78 to 8.24 Mg ha −1.
Intervention effect Ethephon decreased Pioneer 3901 grain yield from 9.63 to 8.56 Mg ha −1.
Intervention effect Ethephon increased Cornell 281 kernel weight from 263 to 266 mg.
Intervention effect Ethephon decreased Pioneer 3901 kernel weight from 282 to 264 mg.
Intervention effect Ethephon significantly decreased kernels per ear in both hybrids from 494 to 474.
Recommendation The authors suggest ethephon may enhance maize yield where lodging is a problem.

Intervention effectauthor interpretationoriginal resultnegativeprojected

Claim · model-written summary

Direct selection for increased TA was expected to decrease tobacco yield by 1.9% per cycle.

Taxon: tobaccoNicotiana tabacume0
Treatment: direct selection for increased TAe3
Outcome: yielde4
Direction: decreasee4
Value: 1.9% per cyclee4

Not reportedComparator

Verbatim

e0
“A negative genetic correlation between yield and total alkaloids (TA) in tobacco, Nicotiana tabacum L., populations causes decreases in yield when selecting for increased TA”
✓ located verbatim in the source · abstract, characters 0–173

e3
“The increase in TA was about 58% of that expected from direct selection for increased TA”
✓ located verbatim in the source · abstract, characters 519–607

e4
“there would be an expected decrease in yield of 1.9% per cycle”
✓ located verbatim in the source · abstract, characters 615–677

Title

Restricted Index Selection for Total Alkaloids and Yield in Tobacco

D. F. Matzinger; E. A. Wernsman; W. W. Weeks Crop Science 1989. doi:10.2135/cropsci1989.0011183x002900010018x

Other claims from this paper (6)

Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

The decrease in cabbage dry weight and head yield under low light is attributed to lower sugar content and lower 14CO2 assimilation.

Taxon: cabbageBrassica oleracea var. capitatat0
Outcome: plant dry weight and the cabbage-head yielde3
Qualifier: decrease in the sugar content and in the rate of 14CO2 assimilatione3

Verbatim

t0
“cabbage-head formation”
✓ located verbatim in the source · title, characters 30–52

e3
“As the light intensity decreased, so the plant dry weight and the cabbage-head yield decreased, resulting from a decrease in the sugar content and in the rate of 14CO2 assimilation”
✓ located verbatim in the source · abstract, characters 576–756

Title

The role of macronutrients in cabbage-head formation

Tetsuo Hara; Yoji Sonoda Soil Science & Plant Nutrition 1981. doi:10.1080/00380768.1981.10431270

Other claims from this paper (11)

Intervention effect Increasing nitrogen supply from 5 to 50 ppm N increased cabbage plant dry weight.
Intervention effect Nitrogen supply at 500 ppm N decreased cabbage plant dry weight.
Intervention effect Cabbage grown at 50 ppm N had the highest sugar content.
Intervention effect Cabbage grown at 50 ppm N had the highest rate of 14CO2 assimilation.
Mechanism Growth at 50 ppm N explains efficient cabbage-head development through the highest sugar content.
Intervention effect Decreasing light intensity decreased cabbage plant dry weight and cabbage-head yield.
Intervention effect Low light intensity made the 15NO3-N uptake by cabbage smaller than high light intensity.
Intervention effect Low light impaired incorporation of 15N into the 80% ethanol-insoluble fraction of the cabbage head.
Association The later the growth stage at which 14CO2 was assimilated, the greater the 14C-retention percentage at harvest.
Association The later the growth stage at which 14CO2 was assimilated, the greater the distribution of 14C into the cabbage head.
Association The 14C-retention percentage decreased with increased nitrogen supply or decreased light intensity in cabbage.

1970s 4

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Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

There was no evidence that fungal diseases were involved in the herbage yield decrease at Rothamsted.

Taxon: Grass Swardst0
Outcome: no evidence that fungal diseases were involvede1

Verbatim

t0
“Grass Swards”
✓ located verbatim in the source · title, characters 61–73

e1
“There was no evidence that fungal diseases were involved”
✓ located verbatim in the source · abstract, characters 1126–1182

Title

Effect of Fungicides and Fertilizer on Yield and Diseases of Grass Swards

E. W. BROOM; A. J. HEARD; ELLIS GRIFFITHS; et al. Plant Pathology 1975. doi:10.1111/j.1365-3059.1975.tb01881.x

Other claims from this paper (15)

Intervention effect Fungicides did not affect total annual dry matter yields at any of the three sites.
Intervention effect Some fungicides slightly affected yield at some individual harvests.
Observation Slight crown rust occurred on perennial ryegrass at Hurley in autumn 1972.
Intervention effect Crown rust on perennial ryegrass was well controlled by oxycarboxin.
Intervention effect Crown rust on perennial ryegrass was slightly controlled by benomyl.
Intervention effect Yields of perennial ryegrass were not increased although crown rust was controlled by oxycarboxin and slightly by benomyl.
Observation Drechslera spp. seemed slightly more common where the rust was controlled.
Intervention effect At Hurley the ley yielded more with 400 kg N/ha than with 100 kg N/ha.
Intervention effect The extra nitrogen fertilizer did not damage the sward at Hurley.
Intervention effect The extra nitrogen fertilizer did not affect the amount of disease at Hurley.
Intervention effect At Aberystwyth the leys were not damaged by 400 kg N/ha.
Observation Yields at Aberystwyth were large.
Intervention effect On old pasture at Rothamsted, extra NK fertilizer never increased the yield of herbage.
Intervention effect On old pasture at Rothamsted, extra NK fertilizer once slightly decreased the yield of herbage.
Mechanism The authors suggest the yield decrease may have been because patches of sward failed to regrow where more fertilizer was applied.

Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

The authors suggest the yield decrease may have been because patches of sward failed to regrow where more fertilizer was applied.

Taxon: Grass Swardst0
Treatment: more fertilizere1
Outcome: patches of sward failed to regrowe1

Verbatim

t0
“Grass Swards”
✓ located verbatim in the source · title, characters 61–73

e1
“perhaps because patches of sward failed to regrow where the crop received more fertilizer”
✓ located verbatim in the source · abstract, characters 1035–1124

Title

Effect of Fungicides and Fertilizer on Yield and Diseases of Grass Swards

E. W. BROOM; A. J. HEARD; ELLIS GRIFFITHS; et al. Plant Pathology 1975. doi:10.1111/j.1365-3059.1975.tb01881.x

Other claims from this paper (15)

Intervention effect Fungicides did not affect total annual dry matter yields at any of the three sites.
Intervention effect Some fungicides slightly affected yield at some individual harvests.
Observation Slight crown rust occurred on perennial ryegrass at Hurley in autumn 1972.
Intervention effect Crown rust on perennial ryegrass was well controlled by oxycarboxin.
Intervention effect Crown rust on perennial ryegrass was slightly controlled by benomyl.
Intervention effect Yields of perennial ryegrass were not increased although crown rust was controlled by oxycarboxin and slightly by benomyl.
Observation Drechslera spp. seemed slightly more common where the rust was controlled.
Intervention effect At Hurley the ley yielded more with 400 kg N/ha than with 100 kg N/ha.
Intervention effect The extra nitrogen fertilizer did not damage the sward at Hurley.
Intervention effect The extra nitrogen fertilizer did not affect the amount of disease at Hurley.
Intervention effect At Aberystwyth the leys were not damaged by 400 kg N/ha.
Observation Yields at Aberystwyth were large.
Intervention effect On old pasture at Rothamsted, extra NK fertilizer never increased the yield of herbage.
Intervention effect On old pasture at Rothamsted, extra NK fertilizer once slightly decreased the yield of herbage.
Observation There was no evidence that fungal diseases were involved in the herbage yield decrease at Rothamsted.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Yield potential of soybean is restricted by a decrease in number of pods or seed.

Taxon: SoybeanGlycine maxe0
Outcome: yield potentiale4
Qualifier: a decrease in number of pods or seede4

Verbatim

e0
“Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage”
✓ located verbatim in the source · abstract, characters 0–202

e4
“However, a similar average weight per pod for both stressed and control plants at the conclusion of the recovery period suggests that individual pod development is not irreversibly affected by a single stress cycle and that yield potential is restricted by a decrease in number of pods or seed”
✓ located verbatim in the source · abstract, characters 765–1058

Title

Growth and Specific Nodule Activity of Soybean during Application and Recovery of a Leaf Moisture Stress

Robert P. Patterson; C. David Raper; H. Douglass Gross PLANT PHYSIOLOGY 1979. doi:10.1104/pp.64.4.551

Other claims from this paper (10)

Intervention effect Leaf total electrochemical water potential of soybean fell to about -24 bars during a 4-day drying cycle, compared with control levels.
Intervention effect Leaf total electrochemical water potential of soybean recovered to control levels after rewatering.
Intervention effect Vegetative and reproductive growth of soybean were about equally suppressed by leaf moisture stress.
Intervention effect Leaf moisture stress reduced the rate of appearance and number of pods of soybean.
Intervention effect Dry matter accumulation in soybean plants and pods was unaffected by temperature.
Intervention effect After a single stress cycle, soybean pods had a similar average weight in stressed and control plants.
Association Specific nodule activity and energy charge of soybean nodules declined with leaf moisture potential.
Intervention effect Recovery of specific nodule activity lagged behind recovery of leaf moisture potential after rewatering in soybean.
Intervention effect Energy charge of soybean nodules recovered as rapidly as leaf moisture potential upon rewatering.
Association The delayed recovery of specific nodule activity in soybean appears unrelated to recovery of nodule energy charge.

1960s 3

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Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The yield decrease after soil mixing is attributed to lowered availability of soil phosphorus.

Taxon: subterranean cloverTrifolium subterraneume1
Compound: soil phosphoruse2
Outcome: yield of subterranean clovere1
Qualifier: lowered availabilitye2

Verbatim

e1
“Compared with growth on undisturbed soil, uniform mixing of the surface 4 in. of pasture soils caused a decrease in the yield of subterranean clover grown in pot culture”
✓ located verbatim in the source · abstract, characters 0–169

e2
“This was shown to be due to lowered availability of the soil phosphorus and was probably brought about by sorption of the available phosphorus, which had accumulated at the soil surface, by the unsaturated subsurface soil”
✓ located verbatim in the source · abstract, characters 171–392

Title

Some effects of cultivation and waterlogging on the availability of phosphorus in pasture soils

CH Williams; JR Simpson Australian Journal of Agricultural Research 1965. doi:10.1071/ar9650413

Other claims from this paper (6)

Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Adopting advanced cultivation techniques should considerably reduce rice yield losses from cool-weather damage on the Pacific coast of Aomori.

Taxon: rice plantsOryza sativae0
Treatment: adopting the advanced technique for cultivatione1
Outcome: decrease in rice yield due to the cool weather damagee1
Setting: Pacific coast in Aomori prefecturee0

Verbatim

e0
“studied the weather dependence of the growth of rice plants at the Pacific coast in Aomori prefecture”
✓ located verbatim in the source · abstract, characters 27–128

e1
“the decrease in rice yield due to the cool weather damage should be considerably reduced by adopting the advanced technique for cultivation”
✓ located verbatim in the source · abstract, characters 304–443

Title

On the Environment for Rice Plant at the Pacific Coast in Aomori Prefecture

I. ABE; K. ONO; H. HIGASHIYAMA Journal of Agricultural Meteorology 1964. doi:10.2480/agrmet.20.55

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Phosphate was converted to non-available forms during short anaerobic conditions, which appeared to cause the lowered phosphorus availability.

Taxon: subterranean cloverTrifolium subterraneume1
Compound: phosphatee5
Outcome: non-available formse5
Qualifier: anaerobic conditionse5

Verbatim

e1
“Compared with growth on undisturbed soil, uniform mixing of the surface 4 in. of pasture soils caused a decrease in the yield of subterranean clover grown in pot culture”
✓ located verbatim in the source · abstract, characters 0–169

e5
“The effect appeared to be due to the conversion of phosphate to non-available forms during the short period of anaerobic conditions”
✓ located verbatim in the source · abstract, characters 614–745

Title

Some effects of cultivation and waterlogging on the availability of phosphorus in pasture soils

CH Williams; JR Simpson Australian Journal of Agricultural Research 1965. doi:10.1071/ar9650413

Other claims from this paper (6)

Intervention effect Uniform mixing of the surface 4 in. of pasture soils decreased subterranean clover yield compared with undisturbed soil.
Mechanism The yield decrease after soil mixing is attributed to lowered availability of soil phosphorus.
Intervention effect Short periods of waterlogging (1–2 days) lowered soil phosphorus availability in subterranean clover pasture soils.
Intervention effect The lowering of soil phosphorus availability by waterlogging was much more severe in mixed soil than in undisturbed soil cores.
Intervention effect Waterlogging increased the phosphate sorption capacity of the soil.
Intervention effect Air-drying returned the waterlogging-increased phosphate sorption capacity to its original value.

“yield decrease”

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2010s 107

2020s 80

2000s 50

1990s 18

1980s 6

1970s 4

1960s 3