Try:droughtFusariumnitrogen fertilizerArabidopsisseed germination

“yield decrease”

12,432 matches

Claim types

Direction of the findings

plus 1,248 non-evaluative

Over time

1950 ’60 ’70 ’80 ’90 2000 ’10 ’20

plus 13 earlier · 1920s–1940s

Refine ·

More filters

Clear filters

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Further raising CO2 from 2600 to 10000 micromoles mol-1 produced a smaller further decrease in those yield traits.

Taxon: wheatTriticum aestivumt0
Treatment: 10000 micromoles mol-1e0
Outcome: decreasee0
Direction: decreasee0
Comparator: 2600e0

Verbatim

e0
“Further elevation of [CO2] from 2600 to 10000 micromoles mol-1 caused a further but smaller decrease”
✓ located verbatim in the source · abstract, characters 1079–1179

t0
“Wheat”
✓ located verbatim in the source · title, characters 67–72

Title

Very High CO2Reduces Photosynthesis, Dark Respiration and Yield in Wheat

J REUVENI Annals of Botany 1997. doi:10.1006/anbo.1997.0489

Other claims from this paper (16)

Intervention effect Raising CO2 from 350 to 1000 micromoles mol-1 increased wheat seed yield by 33%.
Intervention effect Raising CO2 from 350 to 1000 micromoles mol-1 increased vegetative biomass by 25%.
Intervention effect Raising CO2 from 350 to 1000 micromoles mol-1 increased heads per square meter by 34%.
Intervention effect Increasing CO2 from 1000 to 10000 micromoles mol-1 decreased seed yield by 37%.
Intervention effect Increasing CO2 from 1000 to 10000 micromoles mol-1 decreased harvest index by 14%.
Intervention effect Increasing CO2 from 1000 to 10000 micromoles mol-1 decreased mass per seed by 9%.
Intervention effect Increasing CO2 from 1000 to 10000 micromoles mol-1 decreased seeds per head by 29%.
Intervention effect Very high CO2 had negligible, nonsignificant effects on vegetative biomass, heads per square meter, and seed mass per head.
Intervention effect Seed yield, harvest index and seeds per head sharply decreased between 1000 and 2600 micromoles mol-1 CO2.
Observation The two wheat cultivars responded similarly to CO2 across growth parameters.
Observation Wheat grown in the two cultivation environments did not differ in response to high CO2.
Association High CO2 was not correlated with ethylene production by wheat flag leaves or heads.
Intervention effect Whole-plant photosynthetic rate was 8% lower at 2600 micromoles mol-1 CO2 than at ambient CO2.
Intervention effect Wheat head dark respiration was 25% lower at 2600 micromoles mol-1 CO2 than at ambient CO2.
Mechanism The authors attribute reduced seed set mainly to reduced dark respiration in wheat heads.
Mechanism The authors conclude that ethylene does not mediate reduced wheat seed set.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing simazino rates tended to decrease wheat yield.

Taxon: WheatTriticum aestivumt0
Treatment: Increasing rates of simazinoe1
Outcome: wheat yieldse0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“it tended to decrease wheat yields”
✓ located verbatim in the source · abstract, characters 255–289

e1
“Increasing rates of simazino”
✓ located verbatim in the source · abstract, characters 180–208

t0
“Maize - Wheat Rotation”
✓ located verbatim in the source · title, characters 25–47

Title

Chemical Weed Control in Maize - Wheat Rotation in Semi Arid Tropics

SINGH H.G; SAROHA M.S; SHAKTAWAT M.S Madras Agricultural Journal 1977. doi:10.29321/maj.10.a03155

Other claims from this paper (7)

Recommendation At most 100 per cent replenishment of nitrogen removed by weeds was needed to reduce competition.
Intervention effect Increasing simazino rates significantly increased maize yield.
Recommendation Half a kilogram of pre-emergence simazine was judged the best option without harmful wheat residual effects.
Recommendation Pre- and post-emergence 2,4-D at 0.5 kg/ha with full weed nitrogen replenishment was the most beneficial treatment.
Intervention effect Simazine at half a kg/ha increased maize yield by 4.2 g/ha.
Intervention effect Simazine at half a kg/ha reduced weed dry matter production by 13.2 g/ha.
Intervention effect Simazine at half a kg/ha had no harmful effect on wheat.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Yield did not decrease in the first year without fertilization.

Taxon: winter wheat and summer maizeTriticum aestivum Zea mayse0
Treatment: without fertilizatione2
Outcome: yielde2
Direction: did not decreasee2

Not reportedComparator

Verbatim

e0
“comprising winter wheat and summer maize as an annual rotation”
✓ located verbatim in the source · abstract, characters 479–541

e2
“The yield did not decrease in the first year without fertilization but started to decrease considerably in later years”
✓ located verbatim in the source · abstract, characters 1046–1164

Title

Long-term legacy impacts of nitrogen fertilization on crop yield, nitrate accumulation, and nitrogen recovery efficiency

Shuang Lei; Sajjad Raza; Annie Irshad; et al. European Journal of Agronomy 2025. doi:10.1016/j.eja.2025.127513

Other claims from this paper (11)

Intervention effect N fertilization increased grain yield compared with the control.
Intervention effect DCD addition caused additional increases in grain yield, mainly at 500 kg N ha-1.
Intervention effect Yield started to decrease considerably in later years without fertilization.
Intervention effect N fertilization increased grain N uptake by more than 100 % compared with the control in fertilized years and the first unfertilized year.
Intervention effect Grain N uptake decreased strongly in the second year without fertilization.
Intervention effect Cumulative fertilizer N recovery did not differ among N fertilized treatments during fertilized years.
Intervention effect Cumulative fertilizer N recovery increased strongly when N uptake in unfertilized years was incorporated.
Intervention effect Cumulative fertilizer N recovery in N340 + DCD increased from 37 %–44 % in fertilized years to 74 %–80 % in unfertilized years.
Observation A residual nitrate accumulation of 237–489 kg N ha-1 accumulated in the soil profile after two years of fertilization.
Intervention effect Residual N accumulation decreased by 31 %–41 % in the first unfertilized year.
Observation Soil N accumulation became less than 60 kg ha-1 after four years of cropping without fertilization, with no difference among treatments including control.

Intervention effectobservedoriginal resultno effectsimulated

Claim · model-written summary

Different simulated yield-decrease patterns with the same average yield produced little change in profitability.

Taxon: Sugarcanee0
Treatment: Different simulated patterns of yield decrease between cropse1
Outcome: profitabilitye1
Direction: little changee1
Comparator: same average yielde1

Verbatim

e0
“Sugarcane ( Saccharum sp. hyb.)”
✓ located verbatim in the source · abstract, characters 0–31

e1
“Different simulated patterns of yield decrease between crops with the same average yield effected little change in profitability”
✓ located verbatim in the source · abstract, characters 5266–5394

Title

Economic Analysis of Sugarcane Variety Selection, Crop Yield Patterns, and Ratoon Crop Plow Out Decisions

M. E. Salassi; S. B. Milligan jpa 1997. doi:10.2134/jpa1997.0539

Other claims from this paper (10)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Other nitrogen treatments did not decrease K-01 yield and components.

Taxon: SoybeansGlycine maxt0
Material: K-01 linee1
Treatment: other treatmentse0
Outcome: Yield and yield componentse1
Direction: no such decreasee0
Comparator: highest nitrogen treatmente1

Verbatim

e0
“However, in the other treatments no such decrease was observed”
✓ located verbatim in the source · abstract, characters 1788–1850

e1
“Yield and yield components decreased in K-01 line in the highest nitrogen treatment”
✓ located verbatim in the source · abstract, characters 1703–1786

t0
“Soybeans”
✓ located verbatim in the source · title, characters 43–51

Title

Fertilizer Response in Cultivated and Wild Soybeans

Shigeo MATSUMOTO; Ryoichi MATSUNAGA; Tadahiko FURUYA; et al. Japanese Journal of Crop Science 1982. doi:10.1626/jcs.51.293

Other claims from this paper (15)

Observation Fertilizer responses in vegetative growth and seed yield varied by soil, dramatically in sandy soil and slightly in upland and paddy soils.
Observation Both soybean species had low harvest indices in nutrient-poor sandy soil.
Observation Harvest indices were high in upland and paddy soils.
Observation Akisengoku had a higher harvest index than K-01 in upland and paddy soils.
Association Harvest indices in both soybean species declined above line-specific total top dry weights.
Intervention effect Akisengoku showed better vegetative growth response to nitrogen at an early stage.
Association At flowering, no relation between nitrogen and Akisengoku vegetative growth was recognized.
Intervention effect K-01 showed little or no growth response to nitrogen regardless of stage.
Intervention effect Nitrogen application had no significant effect on Akisengoku seed yield and yield components.
Intervention effect The highest nitrogen treatment decreased K-01 seed yield and yield components.
Intervention effect Nitrogen inhibited early nodulation in both soybean species.
Observation Early nodulation inhibition was greater in K-01 than Akisengoku.
Intervention effect Later Akisengoku nodulation under nitrogen was comparable to no nitrogen treatment.
Intervention effect Later K-01 nodulation in the highest nitrogen treatment was worse than with other treatments.
Mechanism The authors attribute reduced K-01 seed yield under the highest nitrogen treatment to impaired nodulation.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Soil-treated strawberry plants showed a decrease in yield in 2009.

Taxon: strawberry plantsFragaria ×ananassae7
Treatment: Soil-treatede7
Outcome: strawberry yielde7
Direction: decreasee7
Qualifier: in 2009e7

Not reportedComparator

Verbatim

e7
“Soil-treated strawberry plants, however, showed a decrease in leaf number in 2008 and in strawberry yield in 2009”
✓ located verbatim in the source · abstract, characters 1496–1609

Title

Plant Growth Is Stimulated by Tea-seed Extract: A New Natural Growth Regulator?

Marianne Andresen; Nina Cedergreen HortScience 2010. doi:10.21273/hortsci.45.12.1848

Other claims from this paper (12)

Intervention effect Tea Seed Powder significantly enhanced growth of sterile Lemna by about 20% above control.
Intervention effect Soil-applied TSP significantly increased biomass of pot-grown beet by 27% to 41% above control.
Intervention effect Soil-applied TSP significantly increased biomass of pot-grown oat by 27% to 41% above control.
Intervention effect Soil-applied TSP significantly increased biomass of pot-grown barley by 27% to 41% above control.
Intervention effect Spray-applied TSP increased growth of pot-grown beet, mustard, oat and barley by 14% to 26%.
Intervention effect Sprayed strawberries had a 38% higher berry yield than control plants in 2008.
Intervention effect Sprayed strawberries showed no difference in leaf number and leaf area compared with control plants.
Intervention effect Sprayed strawberries showed no difference in number of runners and inflorescences compared with control plants.
Intervention effect In 2009 sprayed strawberries showed no significant observable differences from controls.
Intervention effect Soil-treated strawberry plants showed a decrease in leaf number in 2008.
Recommendation The authors suggest the growth-enhancing effect of TSP could be used commercially to improve crop yield.
Mechanism The growth increase is a plant physiological response to TSP rather than an indirect effect on pests, diseases or nutrient uptake.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Decreasing spacing did not decrease yield per plant in 1989.

Taxon: basilOcimum basilicumt0
Treatment: A decrease of in-row plant spacinge0
Outcome: yield per plante0
Direction: not in 1989e0

Not reportedComparator

Verbatim

e0
“A decrease of in-row plant spacing decreased yield per plant in 1990, but not in 1989”
✓ located verbatim in the source · abstract, characters 561–646

t0
“Basil”
✓ located verbatim in the source · title, characters 48–53

Title

In-Row Plant Spacing and Yields of Fresh-Market Basil

Jeanine M. Davis Journal of Herbs Spices & Medicinal Plants 1993. doi:10.1300/j044v02n01_05

Other claims from this paper (3)

Intervention effect In 1989, 20 cm spacing gave the highest sweet basil yield per meter of row.
Intervention effect In 1989, yield per plant did not differ across spacings of 20 to 51 cm.
Intervention effect Decreasing spacing decreased yield per plant in 1990.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Later spring seeding tended to decrease alfalfa dry matter yield.

Taxon: alfalfaMedicago sativae0
Treatment: Seeding alfalfa latere0
Outcome: alfalfa dry matter (DM) yielde0
Direction: decreasee0
Comparator: earliere0

Verbatim

e0
“Seeding alfalfa later, compared with earlier, in the spring tended to increase weed and decrease alfalfa dry matter (DM) yield”
✓ located verbatim in the source · abstract, characters 1037–1163

Title

Evaluation of Weed Control Practices during Spring and Summer Alfalfa Establishment

M. H. Hall; W. S. Curran; E. L. Werner; et al. jpa 1995. doi:10.2134/jpa1995.0360

Other claims from this paper (14)

Intervention effect Later spring alfalfa seeding tended to increase weed dry matter yield.
Intervention effect Spring seeding date did not affect seeding-year total dry matter yield.
Intervention effect Spring seeding date did not affect seeding-year forage quality.
Intervention effect Spring weed-control effects on alfalfa and weed yield were sporadic.
Intervention effect No spring weed control generally gave the greatest net return.
Intervention effect Spring seeding timing and weed-control treatments did not consistently differ in later yield, quality or net return.
Intervention effect Later summer seeding reduced first-harvest alfalfa yield by 704 lb/acre.
Intervention effect Later summer seeding reduced total-season alfalfa yield by 1121 lb/acre.
Intervention effect Summer weed control generally did not improve alfalfa dry matter yield.
Intervention effect Summer weed control generally did not improve total dry matter yield.
Intervention effect Summer weed control generally did not improve forage quality.
Intervention effect Summer weed control generally did not improve net economic return per acre.
Recommendation The authors conclude that studied weed-control practices were not economically beneficial and may reduce returns.
Recommendation The authors advise against nurse crops or herbicides where severe weed infestation is not expected.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The imazamox fomesafen mixture tended to decrease lima bean height and yield.

Taxon: lima beanPhaseolus lunatuse0
Treatment: imazamox fomesafen mixturee0
Outcome: height and yielde0
Direction: decreasee0
Qualifier: tended toe0

Not reportedComparator

Verbatim

e0
“The imazamox fomesafen mixture caused significant visual injury and tended to decrease lima bean height and yield.”
✓ located verbatim in the source · abstract, characters 600–714

Title

Herbicide Tolerance of Lima Bean (Phaseolus lunatus) in Ontario¹

KRISTEN E. McNAUGHTON; PETER H. SIKKEMA; DARREN E. ROBINSON Weed Technology 2004. doi:10.1614/wt-03-038r1

Other claims from this paper (7)

Intervention effect The imazamox fomesafen mixture caused significant visual injury in lima bean.
Intervention effect Metolachlor caused some initial crop injury but did not significantly reduce yield.
Intervention effect Imazethapyr caused some initial crop injury but did not significantly reduce yield.
Intervention effect Quizalofop-P caused some initial crop injury but did not significantly reduce yield.
Recommendation The authors recommend preemergence metolachlor at 1,600 g/ha for weed management in Ontario lima bean.
Recommendation The authors recommend preemergence imazethapyr at 75 g/ha for weed management in Ontario lima bean.
Recommendation The authors recommend postemergence quizalofop-P at 72 g/ha for weed management in Ontario lima bean.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 60 kg zinc sulphate, yield tended to decrease.

Taxon: carrotDaucus carotat0
Treatment: 60 kg ZnSO 4 .7H 2 O/hae0
Outcome: yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“at higher zinc level (60 kg ZnSO 4 .7H 2 O/ha) the yield tended to decrease”
✓ located verbatim in the source · abstract, characters 352–427

t0
“carrot (Daucus caroto L.)”
✓ located verbatim in the source · abstract, characters 112–137

Title

Differential response of vegetable crops to zinc fertilization in Alluvial soils.

V. P. S. Solanki; Saurabh Singh; Omvir Singh; et al. The Indian Journal of Agricultural Sciences 2010

Other claims from this paper (11)

Intervention effect Zinc sulphate through 30 kg/ha significantly increased vegetable yield and dry matter.
Intervention effect Zinc response ranked carrot above cauliflower above onion.
Intervention effect Zinc application progressively raised zinc concentration and uptake.
Observation Cauliflower curd had maximum zinc removal.
Observation Carrot roots had minimum zinc removal.
Intervention effect Zinc application improved protein content and yield.
Intervention effect All three crops had maximum net returns and B:C ratio at 30 kg zinc sulphate.
Intervention effect Apparent zinc recovery was maximal at 30 kg zinc sulphate except in onion.
Intervention effect Onion apparent zinc recovery peaked at 0.40% with 15 kg zinc sulphate.
Intervention effect Zinc use efficiency was better at 15 kg zinc sulphate.
Intervention effect Zinc use efficiency decreased as zinc rate increased and was lowest at 60 kg.

Lexical search (BM25). All words must match; if nothing does, any word. Organism names also match every spelling of the same organism. No semantic search yet.

“yield decrease”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics