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“yield decrease”

606 matches

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plus 148 non-evaluative

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1950 ’60 ’70 ’80 ’90 2000 ’10 ’20

plus 31 earlier · 1910s–1940s

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Observationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Thinning treatments did not significantly decrease yield per tree.

Taxon: ‘Wilking’ mandarinst0
Outcome: yield in kg per treee0
Direction: without significant decreasee0

Verbatim

e0
“without significant decrease of yield in kg per tree.”
✓ located verbatim in the source · abstract, characters 243–296

t0
“‘Wilking’ Mandarins”
✓ located verbatim in the source · title, characters 55–74

Title

Improving Fruit Size and Breaking Alternate Bearing in ‘Wilking’ Mandarins by Ethephon and Other Agents1

S. Galliani; S. P. Monselise; R. Goren HortScience 1975. doi:10.21273/hortsci.10.1.68

Other claims from this paper (9)

Intervention effect Ethephon caused satisfactory thinning in heavily loaded mandarin trees.
Intervention effect NAA caused satisfactory thinning in heavily loaded mandarin trees.
Intervention effect Ethephon increased individual fruit size by 64% versus hand thinning.
Intervention effect NAA increased individual fruit size by 48% versus hand thinning.
Intervention effect Ethephon increased profit by about 30% versus hand thinning.
Intervention effect NAA increased profit by about 30% versus hand thinning.
Intervention effect Summer pruning had similar effects but a smaller fruit size increase.
Intervention effect Ethephon reduced alternate bearing.
Observation After ethephon, 57% of treated trees had satisfactory yields the following year.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Daily sprinkle irrigation tended to decrease pepper yield.

Taxon: Pepper plantst0
Treatment: sprinkle irrigated dailye0
Outcome: Yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Yield tended to decrease when the plants were sprinkle irrigated daily.”
✓ located verbatim in the source · abstract, characters 363–434

t0
“Pepper plants ( Capsicum annuum L. cv. California Wonder)”
✓ located verbatim in the source · abstract, characters 9–66

Title

Sprinkle and Trickle Irrigation of Green Pepper in an Arid Zone1

D. Goldberg; M. Shmueli HortScience 1971. doi:10.21273/hortsci.6.6.559

Other claims from this paper (4)

Intervention effect Trickle irrigation gave greater pepper yield, leaf growth, and root development than sprinkle irrigation.
Intervention effect Irrigation frequency had a slight but nonsignificant effect.
Intervention effect Trickle irrigation every 5 days tended to reduce pepper yield.
Intervention effect Sprinkling increased leaf chloride content, especially with frequent irrigation.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

The seed yield decrease in pinto beans was comparable to reductions in leaf and stem biomass.

Taxon: pinto beanst0
Outcome: decrease in seed yielde0
Direction: decreasee0
Comparator: reductions in biomass of leaves and stemse0

Verbatim

e0
“the decrease in seed yield was comparable to reductions in biomass of leaves and stems”
✓ located verbatim in the source · abstract, characters 579–665

t0
“pinto beans”
✓ located verbatim in the source · title, characters 67–78

Title

Effects of simulated acid rain on growth and yield of soybeans and pinto beans

Levi Evans; Keith F. Lewin OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) 1979

Other claims from this paper (7)

Intervention effect Rain at pH 3.1 and below decreased seed, leaf and stem dry mass in pinto beans.
Mechanism The reduced yield of pinto beans was attributed to fewer pods per plant.
Mechanism The reduced yield of pinto beans was attributed to fewer seeds per pod.
Intervention effect Simulated acid rain decreased soybean stem and leaf dry mass.
Intervention effect Rain at pH 2.5 decreased soybean seed yield.
Intervention effect Rain at pH 3.1 increased soybean seed yield.
Mechanism Greater dry mass per seed accounted for the greater soybean seed mass per plant.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Barley monoculture yield decrease was usually minor on fertile soils in Denmark.

Taxon: barleyHordeum vulgaree0
Outcome: decreasee0
Direction: decreasee0
Qualifier: fertile soilse0
Setting: Denmarke0

Verbatim

e0
“In barley, which is dominating in Denmark, the decrease on fertile soils is usually of minor importance.”
✓ located verbatim in the source · abstract, characters 1358–1462

Title

Danish Experiences with Cereals in Monoculture¹

A. Jensen EPPO Bulletin 1975. doi:10.1111/j.1365-2338.1975.tb02477.x

Other claims from this paper (19)

Intervention effect Cereal monoculture led to yield depletion.
Mechanism take‐all was a main factor in cereal yield loss.
Mechanism eyespot was a main factor in cereal yield loss.
Observation New barley varieties were highly resistant to the cereal cyst nematode.
Mechanism The named parasites did not explain all yield losses.
Observation Barley monoculture yield declining the first 2–4 years.
Observation Barley monoculture yield remains stable after that.
Observation Barley monoculture take‐all declines after that.
Intervention effect Adding straw to the soil had little effect on barley yield or disease.
Intervention effect burning it had little effect on barley yield or disease.
Intervention effect Postharvest soil treatments had little effect.
Observation The largest barley monoculture yield decrease occurred in years three to five.
Intervention effect Postharvest soil treatment had little effect on disease and yield except on heavily weed infested land.
Observation The cereal root nematode remained a threat to oat and spring wheat.
Intervention effect Monocultures of different host plants reduced nematode populations.
Intervention effect Benomyl successfully controlled eyespot in winter wheat.
Intervention effect Benomyl successfully controlled eyespot in winter rye.
Observation Field chemical control of take-all appeared infeasible despite good laboratory tests.
Observation Breeding for take-all resistance was judged difficult and of doubtful economic value.

Associationobservedoriginal resultmeasured

Claim · model-written summary

The extent of rice yield decrease was correlated with ripening temperature.

Taxon: riceOryza sativae0
Treatment: ripening temperaturee1
Outcome: extent of yield decreasee1
Setting: Aomori prefecturee0

Not reportedDirection

Verbatim

e0
“distribution of rice yield in Aomori prefecture in 1971”
✓ located verbatim in the source · abstract, characters 37–92

e1
“relative correlation among the extent of yield decrease and “ripening temperature””
✓ located verbatim in the source · abstract, characters 430–512

Title

Studies on Forecast of Cool Weather Damage of Rice Growth in Aomori Prefecture

Izo ABE; Kiyoji ONO Journal of Agricultural Meteorology 1974. doi:10.2480/agrmet.30.117

Other claims from this paper (2)

Mechanismobservedoriginal resultnegativemeasured

Claim · model-written summary

The yield decrease lowered total grain protein production per crop.

Taxon: RiceOryza sativat0
Outcome: total grain protein production per crope0
Direction: lowerse0
Qualifier: decrease in grain yielde0

Verbatim

e0
“This decrease in grain yield consequently lowers the total grain protein production per crop.”
✓ located verbatim in the source · abstract, characters 217–310

t0
“Rice”
✓ located verbatim in the source · title, characters 41–45

Title

Effect of Simazine on Protein Content of Rice Grain (Oryza sativa L.)

B. S. Vergara; M. Miller; E. Avelino Agronomy Journal 1970. doi:10.2134/agronj1970.00021962006200020028x

Other claims from this paper (6)

Intervention effect Simazine applied at flowering increased grain protein percentage.
Intervention effect Simazine applied at flowering decreased grain yield.
Mechanism Increased sterility was attributed as the cause of reduced grain yield.
Intervention effect Simazine increased nitrogen content of blades, sheaths plus culms, and roots in young rice plants.
Mechanism The nitrogen percentage increase did not result from increased plant nitrogen uptake.
Mechanism Reduced dry weight accounted for increased nitrogen percentage.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Nitrogen did not decrease legume yield.

Taxon: tropical grass-legumet0
Treatment: Nitrogen fertilizere0
Outcome: yield of legumee0
Direction: did not decreasee0

Not reportedComparator

Verbatim

e0
“Nitrogen fertilizer did not decrease the yield of legume”
✓ located verbatim in the source · abstract, characters 613–669

t0
“tropical grass-legume”
✓ located verbatim in the source · title, characters 86–107

Title

Effects of nitrogen fertilizer applied in autumn and winter on milk production from a tropical grass-legume grazed at four stocking rates

RT Cowan; TH Stobbs Australian Journal of Experimental Agriculture and Animal Husbandry 1976. doi:10.1071/ea9760829

Other claims from this paper (7)

Intervention effect Nitrogen increased pasture yield, particularly at high stocking rates.
Intervention effect Nitrogen increased milk yield, particularly at high stocking rates.
Observation Mid-autumn to spring milk gains accounted for nearly all annual gains.
Intervention effect Nitrogen reduced pasture legume content in year two.
Association Nitrogen response of nonlegumes increased with stocking rate.
Association Lower pasture dry matter availability restricted fat-corrected milk yield.
Intervention effect At equal dry matter yield, fertilized pasture gave higher fat-corrected milk yield.

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

Zinc sulphate and zinc oxide caused little or no decrease in tuber yield.

Taxon: potatoSolanum tuberosumt0
Treatment: zinc sulphate and zinc oxidee0
Outcome: tuber yielde0
Direction: little or no decreasee0

Not reportedComparator

Verbatim

e0
“zinc sulphate and zinc oxide caused little or no decrease in tuber yield.”
✓ located verbatim in the source · abstract, characters 1880–1953

t0
“potato mop‐top virus”
✓ located verbatim in the source · title, characters 51–71

Title

Field and glasshouse experiments on the control of potato mop‐top virus

J. I. COOPER; R. A. C. JONES; B. D. HARRISON Annals of Applied Biology 1976. doi:10.1111/j.1744-7348.1976.tb00600.x

Other claims from this paper (19)

Observation Infected mother plants passed PMTV to only some progeny tubers.
Observation Symptomless plants produced only symptomless progeny in this cultivar.
Recommendation Removing symptomatic plants was recommended to accelerate elimination of PMTV.
Intervention effect Heat treatment at 37 °C for up to 8 wk failed to free infected tubers of PMTV.
Intervention effect Formaldehyde treatment greatly decreased PMTV establishment.
Intervention effect Organo-mercurial fungicide greatly decreased PMTV establishment.
Intervention effect Fumigation with 2-aminobutane was ineffective.
Intervention effect Sulphur acidification greatly decreased infection by PMTV and S. subterranea.
Observation PMTV transmission resumed when treated soil pH rose.
Intervention effect Fungicides decreased infection of Nicotiana debneyi bait seedlings.
Intervention effect Calomel at 75 kg/ha controlled field spread of PMTV and S. subterranea to potato.
Intervention effect Zinc frit greatly decreased spread of both pathogens to potato.
Intervention effect Zinc sulphate greatly decreased spread of both pathogens to potato.
Intervention effect Zinc oxide greatly decreased spread of both pathogens to potato.
Association The zinc amount required rose with soil clay content.
Intervention effect Zinc treatment did not eliminate virus-carrying vectors from soil.
Intervention effect Zinc frit was phytotoxic due to boron content.
Intervention effect Potato tuber zinc content increased in treated plots but did not double.
Recommendation The authors recommended sulphur, zinc oxide or calomel for small early propagation plots.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

An unventilated, unenriched tomato house suffered a 13% yield decrease

Taxon: tomatoesSolanum lycopersicume1
Treatment: unenrichede3
Outcome: yielde3
Direction: decreasee3
Value: 13e3

Not reportedComparator

Verbatim

e1
“The yield of 2 crops of tomatoes ( Lycopersicon esculentum Mill. cv. Tropic) was determined in CO 2 enriched, unventilated and conventionally ventilated greenhouses”
✓ located verbatim in the source · abstract, characters 9–173

e3
“An unventilated, unenriched house suffered a 13% yield decrease”
✓ located verbatim in the source · abstract, characters 749–812

Title

Tomato Yields from CO2-enrichment in Unventilated and Conventionally Ventilated Greenhouses1

B. A. Kimball; S. T. Mitchell Journal of the American Society for Horticultural Science 1979. doi:10.21273/jashs.104.4.515

Other claims from this paper (11)

Intervention effect Unventilated houses enriched with 650 μl CO2/liter had 17% greater tomato yield than the control
Intervention effect Unventilated houses enriched with 1000 μl CO2/liter had 48% greater tomato yield than the control
Observation The ventilated control house yielded 8.58 kg/plant in the first spring crop
Observation The control house yielded 8.48 kg/plant in the second winter crop at standard nutrient level
Observation The control house yielded 9.70 kg/plant in the second winter crop at high nutrient level
Intervention effect Unventilated houses at standard nutrient level yielded 64% more than the control at 1000 μl CO2/liter
Intervention effect Unventilated houses at standard nutrient level yielded 63% more than the control at 1350 μl CO2/liter
Intervention effect Unventilated houses at high nutrient level yielded 35% more than the control at 1000 μl CO2/liter
Intervention effect Unventilated houses at high nutrient level yielded 37% more than the control at 1350 μl CO2/liter
Intervention effect A ventilated house enriched to 1000 μl/liter when cooling was not required yielded 8% more than the control at standard nutrient level
Intervention effect A ventilated house enriched to 1000 μl/liter when cooling was not required yielded 10% more than the control at high nutrient level

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“yield decrease”

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