Try:droughtFusariumnitrogen fertilizerArabidopsisseed germination

“yield decrease”

800 matches

Claim types

Direction of the findings

plus 178 non-evaluative

Over time

1950 ’60 ’70 ’80 ’90 2000 ’10 ’20

plus 31 earlier · 1910s–1940s

Refine ·

More filters

Clear filters

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Nitrogen tended to decrease grain phosphorus content.

Taxon: soft red winter wheate1
Treatment: Nitrogen fertilizatione0
Outcome: Pe0
Direction: tended to decreasee0

Not reportedComparator

Verbatim

e0
“Nitrogen fertilization increased the S content of grain and tended to decrease P and K content.”
✓ located verbatim in the source · abstract, characters 1546–1641

e1
“soft red winter wheat (SRWW) ( Triticum aestivum L.)”
✓ located verbatim in the source · abstract, characters 99–151

Title

Fertilizer Effects on Yield, Grain Composition, and Foliar Disease of Doublecrop Soft Red Winter Wheat¹

Donald J. Boquet; Catherine C. Johnson Agronomy Journal 1987. doi:10.2134/agronj1987.00021962007900010028x

Other claims from this paper (15)

Intervention effect Nitrogen application significantly raised wheat yield through 101 kg ha −1.
Association Wheat yield followed the reported linear equation against nitrogen rate.
Intervention effect Nitrogen application increased kernels per spike.
Intervention effect Nitrogen application slightly decreased specific kernel weight.
Intervention effect Splitting nitrogen application provided no yield benefit.
Association Leaf rust infection rose linearly with nitrogen rate.
Association Powdery mildew infection rose linearly with nitrogen rate.
Intervention effect Phosphorus fertilization decreased leaf rust incidence.
Intervention effect Phosphorus fertilization decreased powdery mildew incidence.
Intervention effect Nitrogen did not affect grain protein content at tested rates.
Intervention effect Nitrogen increased total protein per hectare through increased yield.
Intervention effect Nitrogen increased grain sulfur content.
Intervention effect Nitrogen tended to decrease grain potassium content.
Intervention effect Phosphorus fertilization did not affect grain protein or mineral composition.
Intervention effect Potassium fertilization did not affect grain protein or mineral composition.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The decrease in nonphotorespiratory respiration with increasing photon flux density was concluded not to involve photorespiration.

Outcome: decrease with increasing photon flux densitye0
Qualifier: did not involve photorespiratione0

Not reportedTaxon

Verbatim

e0
“it was concluded that its decrease with increasing photon flux density did not involve photorespiration”
✓ located verbatim in the source · abstract, characters 1124–1227

Title

Investigation of the CO₂ Dependence of Quantum Yield and Respiration in Eucalyptus pauciflora

Miko U. F. Kirschbaum; Graham D. Farquhar PLANT PHYSIOLOGY 1987. doi:10.1104/pp.83.4.1032

Other claims from this paper (4)

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Triacontanol decreased yield in water-deficient corn.

Taxon: cornZea mays subsp. mayse6
Treatment: triacontanole6
Outcome: yielde6
Direction: decreasee6
Setting: waterdeficient corne6

Not reportedComparator

Verbatim

e6
“One of the four irrigation ✕ triacontanol interactions was significant, showing a yield increase due to triacontanol under irrigation, and a yield decrease in waterdeficient corn”
✓ located verbatim in the source · abstract, characters 1380–1558

Title

Dinoseb and Triacontanol as Growth Regulators in Irrigated and Nonirrigated Field Corn¹

D. L. Regehr Agronomy Journal 1982. doi:10.2134/agronj1982.00021962007400010028x

Other claims from this paper (9)

Intervention effect Dinoseb significantly reduced corn grain yield in 11 of 12 comparisons with untreated plots.
Intervention effect Dinoseb reduced corn yield by 18.0% on average in irrigated corn.
Intervention effect Dinoseb reduced corn yield by 18.4% on average in nonirrigated corn.
Mechanism Part of the dinoseb-induced yield loss may be due to reduced harvest index and reduced ear fill.
Intervention effect Triacontanol did not affect corn grain yield in six of eight comparisons with untreated plots.
Observation The irrigation × dinoseb interaction was significant in only one of six comparisons.
Intervention effect Triacontanol increased corn yield under irrigation.
Observation The hypothesized interaction of environmental stress with dinoseb and triacontanol was not substantiated.
Recommendation The inconsistent performance of these growth regulators should not be attributed to environmental conditions of the growing crop.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen fertilizer reduced the yield disadvantage of transplanting relative to direct seeding.

Taxon: riceOryza sativat0
Treatment: nitrogen fertilizere0
Outcome: decreasee0
Direction: lesse0

Not reportedComparator

Verbatim

t0
“rice”
✓ located verbatim in the source · title, characters 59–63

e0
“the decrease was less in the crop given nitrogen fertilizer”
✓ located verbatim in the source · abstract, characters 413–472

Title

Effect of methods of stand establishment on grain yield of rice under intermediate deep water conditions (15–50 cm)

M. D. Reddy; M. M. Panda The Journal of Agricultural Science 1988. doi:10.1017/s0021859600079673

Other claims from this paper (5)

Intervention effect Direct seeding was superior to transplanting in 20 cm of water.
Association Taller varieties performed better under transplanting.
Intervention effect Nitrogen fertilizer at 40 kg/ha increased grain yield under direct seeding.
Intervention effect Nitrogen fertilizer at 40 kg/ha increased grain yield under transplanting.
Intervention effect Transplanted rice yielded less than direct-seeded rice.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Higher trifluralin rates decreased wheat yield over untreated control.

Taxon: spring wheatTriticum aestivumt0
Treatment: higher ratese0
Outcome: yielde0
Direction: decreasee0
Comparator: untreated controle0

Verbatim

e0
“higher rates caused a yield decrease compared to the untreated control”
✓ located verbatim in the source · abstract, characters 808–878

t0
“spring wheat (Triticum aestivum L.)”
✓ located verbatim in the source · title, characters 13–48

Title

Tolerance of spring wheat (Triticum aestivum L.) to trifluralin deep‐incorporated in the autumn or spring

P. A. O'SULLIVAN; G. M. WEISS; D. FRIESEN Weed Research 1985. doi:10.1111/j.1365-3180.1985.tb00645.x

Other claims from this paper (9)

Intervention effect Trifluralin above 1.0 kg ai ha−1 reduced wheat stand after autumn application.
Intervention effect Trifluralin above 1.0 kg ai ha−1 reduced wheat stand after spring application.
Intervention effect Autumn application at 1.0 kg ai ha−1 caused 37% wheat injury two weeks after emergence.
Intervention effect Spring application at 1.0 kg ai ha−1 caused 47% wheat injury two weeks after emergence.
Observation Wheat recovered over the growing season after injury.
Intervention effect Autumn trifluralin below 1.0 kg ai ha−1 increased wheat yield over untreated control.
Intervention effect Spring trifluralin below 1.0 kg ai ha−1 increased wheat yield over untreated control.
Intervention effect Spring trifluralin caused more wheat yield loss than autumn application.
Recommendation The authors judge wheat tolerance marginal at weed control rates on this soil type.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Decreased clover growth contributed to lower total forage yield.

Taxon: cloverTrifoliume0
Organ / stage: growth of clovere0
Outcome: total forage yielde0
Direction: decreasee0

Verbatim

e0
“The decrease in total forage yield and decreased quality caused by decreased growth of clover”
✓ located verbatim in the source · abstract, characters 700–793

Title

Effects of Long-Term Ozone Exposure and Soil Moisture Deficit on Growth of a Ladino Clover-Tall Fescue Pasture

Allen S. Heagle Phytopathology 1989. doi:10.1094/phyto-79-128

Other claims from this paper (4)

Intervention effect Water stress lowered total forage yield by 12–14% versus well-watered plots.
Observation Clover was more sensitive to ozone than fescue.
Mechanism Decreased clover growth contributed to lower forage quality.
Recommendation The authors call for ozone-tolerant ladino clover lines.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Nitrogen tended to decrease grain potassium content.

Taxon: soft red winter wheate1
Treatment: Nitrogen fertilizatione0
Outcome: K contente0
Direction: tended to decreasee0

Not reportedComparator

Verbatim

e0
“Nitrogen fertilization increased the S content of grain and tended to decrease P and K content.”
✓ located verbatim in the source · abstract, characters 1546–1641

e1
“soft red winter wheat (SRWW) ( Triticum aestivum L.)”
✓ located verbatim in the source · abstract, characters 99–151

Title

Fertilizer Effects on Yield, Grain Composition, and Foliar Disease of Doublecrop Soft Red Winter Wheat¹

Donald J. Boquet; Catherine C. Johnson Agronomy Journal 1987. doi:10.2134/agronj1987.00021962007900010028x

Other claims from this paper (15)

Intervention effect Nitrogen application significantly raised wheat yield through 101 kg ha −1.
Association Wheat yield followed the reported linear equation against nitrogen rate.
Intervention effect Nitrogen application increased kernels per spike.
Intervention effect Nitrogen application slightly decreased specific kernel weight.
Intervention effect Splitting nitrogen application provided no yield benefit.
Association Leaf rust infection rose linearly with nitrogen rate.
Association Powdery mildew infection rose linearly with nitrogen rate.
Intervention effect Phosphorus fertilization decreased leaf rust incidence.
Intervention effect Phosphorus fertilization decreased powdery mildew incidence.
Intervention effect Nitrogen did not affect grain protein content at tested rates.
Intervention effect Nitrogen increased total protein per hectare through increased yield.
Intervention effect Nitrogen increased grain sulfur content.
Intervention effect Nitrogen tended to decrease grain phosphorus content.
Intervention effect Phosphorus fertilization did not affect grain protein or mineral composition.
Intervention effect Potassium fertilization did not affect grain protein or mineral composition.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Deeper planting lowered yield only at a location with delayed planting.

Taxon: wheatTriticum aestivumt0
Outcome: yield changee0
Direction: decreasee0
Qualifier: planting date was delayede0

Not reportedTreatmentComparator

Verbatim

e0
“The only yield change was a decrease at a location where planting date was delayed”
✓ located verbatim in the source · abstract, characters 2036–2118

t0
“Soft Red Winter Wheat”
✓ located verbatim in the source · title, characters 36–57

Title

Grain Yield and Yield Components of Soft Red Winter Wheat as Affected by Management Practices¹

J. R. Frederick; H. G. Marshall Agronomy Journal 1985. doi:10.2134/agronj1985.00021962007700030030x

Other claims from this paper (16)

Observation Site mean grain yields ranged from 291 to 420 g m −2.
Observation Site mean tiller density ranged from 440 to 585 tillers m −2.
Observation Site mean kernels per tiller ranged from 20.0 to 27.6.
Observation Site mean thousand-kernel weight ranged from 27.2 to 35.5 g.
Observation Kernel number per tiller appeared below genetic and phenotypic potential.
Intervention effect Increasing nitrogen had a positive quadratic yield response at low-yielding sites.
Intervention effect Increasing nitrogen had a negative quadratic yield response at high-yielding sites.
Association Reduced kernel weight was the primary component of yield decreases.
Intervention effect Seeding above 101 kg ha −1 increased tiller number.
Intervention effect Seeding above 101 kg ha −1 decreased kernels per tiller.
Intervention effect Seeding above 101 kg ha −1 increased kernel weight at six locations.
Intervention effect Reducing row spacing to 12.7 cm increased grain yield by 8.2% on average.
Association More tillers per area were the main contributor to yield gain with narrower rows.
Observation Narrower row spacing was the only treatment lacking a consistent negative response in another yield component.
Intervention effect Planting at 3.8 cm reduced tiller number.
Intervention effect Planting at 3.8 cm increased kernels per tiller at most locations.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The highest waste rate did not significantly reduce yield.

Treatment: highest application ratee0
Outcome: yielde0
Direction: no significant decreasee0

Not reportedTaxonComparator

Verbatim

e0
“There was no significant decrease in yield at the highest application rate”
✓ located verbatim in the source · abstract, characters 521–595

Title

Application of piggery waste to soils in pots: effect on dry matter yield and uptake of nitrogen, potassium, calcium and magnesium by ryegrass and white clover

R Reid; LA Douglas; PM Chalk Australian Journal of Experimental Agriculture 1984. doi:10.1071/ea9840354

Other claims from this paper (8)

Intervention effect Waste increased ryegrass yield significantly on all soils.
Intervention effect Waste increased white clover yield significantly on one soil.
Intervention effect Waste at 9.4 t DM/ha corrected potassium dietary deficiency in ryegrass on potassium-deficient podzolic soil.
Intervention effect Waste at 9.4 t DM/ha corrected potassium dietary deficiency in clover on potassium-deficient podzolic soil.
Intervention effect Waste at 5.3 t DM/ha raised ryegrass K:(Ca+Mg) ratio above 2.0 on alluvial soil.
Intervention effect Waste at 5.3 t DM/ha raised ryegrass K:(Ca+Mg) ratio above 2.0 on red brown earth.
Intervention effect Waste at 18 t DM/ha raised ryegrass tissue nitrate above 0.2% N.
Intervention effect Waste at at least 9.4 t DM/ha raised clover tissue nitrate above 0.2% N.

Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

Genetic correlations between head size and the curding habit of cauliflower probably explain the yield decrease in the broccoli population.

Taxon: broccoliBrassica oleracea var. italicat0
Outcome: yielde7
Qualifier: genetic correlations between head size and the curding habit of cauliflowere7

Verbatim

t0
“breeding of broccoli”
✓ located verbatim in the source · title, characters 36–56

e7
“There were improvements in quality between the F2 and F4, but yield had decreased, probably because of genetic correlations between head size and the curding habit of cauliflower”
✓ located verbatim in the source · abstract, characters 932–1110

Title

The effects of plant spacing on the breeding of broccoli from an expanded genetic base

P. Crisp; A. R. Gray; S. M. Angell; et al. Journal of Horticultural Science 1986. doi:10.1080/14620316.1986.11515692

Other claims from this paper (7)

Intervention effect Most quality-affecting characters of broccoli sub-populations were unaffected by spacing.
Intervention effect Yield-affecting characters of broccoli showed linear and quadratic responses to spacing.
Association Some yield characters of broccoli differed linearly in their response to spacing among sub-populations.
Recommendation Cultivars of broccoli might be bred that are adapted to particular spacings.
Observation Genetic correlations between characters in broccoli breeding material were generally advantageous.
Intervention effect Quality of the broccoli breeding population improved between the F2 and F4 generations of selection.
Intervention effect Yield of the broccoli breeding population decreased between the F2 and F4 generations of selection.

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