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“yield decrease”

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1950 ’60 ’70 ’80 ’90 2000 ’10 ’20

plus 6 earlier · 1930s

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Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Selection for nematode resistance did not decrease sugar beet root yield.

Treatment: Selection for resistance to nematodee0
Interactor: nematodeNematodae0pest
Outcome: root yieldse0
Direction: did not decreasee0

Not reportedTaxonComparator

Verbatim

e0
“Selection for resistance to nematode did not decrease root yields.”
✓ located verbatim in the source · abstract, characters 183–249

Title

Breeding Sugar Beets for Resistance to Nematodes¹

R. E. Finkner; J. F. Swink Agronomy Journal 1956. doi:10.2134/agronj1956.00021962004800090001x

Other claims from this paper (1)

Observation Currently grown sugar beet varieties showed moderate nematode resistance by sugar yield.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Slightly damaged wheat fields had no actual yield decrease.

Taxon: wheatTriticum aestivumt0
Outcome: yielde0
Direction: not founde0
Setting: slightly damaged fielde0

Verbatim

e0
“Actual decrease in yield was not found in the slightly damaged field”
✓ located verbatim in the source · abstract, characters 1794–1862

t0
“wheat plants”
✓ located verbatim in the source · title, characters 23–35

Title

On the frost damage of wheat plants occured at Tokorozawa district, Saitama prefecture in 1955

Y. OKAMOTO; Y. KANZAKI; H. INOUE; et al. Journal of Agricultural Meteorology 1956. doi:10.2480/agrmet.12.13

Other claims from this paper (16)

Observation Frost killed young ears in low winter type wheat and induced late tiller ears and delayed heading.
Observation Frost caused 68.3% dead stems in the severely damaged field.
Observation Frost caused 48.1% dead stems in the intermediately damaged field.
Observation Frost caused 23.3% dead stems in the lightly damaged field.
Association Damage differences were likely related to growth and developmental stage.
Observation Damage changed late stem number, stem length and stem diameter.
Observation Damage delayed wheat heading.
Association Frost damage degree correlated strongly with changed morphological characters and those characters correlated with each other.
Observation Frost decreased complete grains and their proportion.
Observation Frost increased incomplete grain quantity.
Observation Frost decreased thousand grain weight.
Observation Intermediate damage reduced wheat yield by about 30%.
Observation Severe damage reduced wheat yield by about 70%.
Mechanism Late stems produced grains that compensated for yield losses to differing degrees.
Method / resource Late stem productivity may estimate frost related wheat yield loss.
Association Late stem productivity correlated significantly with delayed heading days, stem length and stem diameter.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Yield decrease at flower organ differentiation was hardly recognized.

Taxon: naked barleyt0
Organ / stage: flower organe1
Outcome: yield decreasee0
Direction: hardly recognizede0

Verbatim

e0
“But the yield decrease was hardly recognized, because of the few abnormality in ears and the good fertility in seeds.”
✓ located verbatim in the source · abstract, characters 452–569

t0
“naked barley "Hashirihadaka" caused by the unusual low temperature”
✓ located verbatim in the source · abstract, characters 39–105

e1
“Damages of plants at the differentiation stage of flower organ.”
✓ located verbatim in the source · abstract, characters 295–358

Title

Studies on Cold Injury in Different Growing Stage of Naked Barley.

Hiroyuki TAKAHASHI; Shunji HIGASHI; Satoru KAGOHASHI; et al. Japanese Journal of Crop Science 1959. doi:10.1626/jcs.27.393

Other claims from this paper (9)

Observation Cold injury at flower organ differentiation slightly delayed growth and injured some ears.
Observation Some pollen mother cells were injured, with irregular development, degeneration and corruption.
Observation Ears that had already headed showed partial sterility during booting to heading.
Observation At booting to heading, pollen abnormalities included fewer microspores, vacuolate pollen and empty anthers.
Observation Cold injury at heading to flowering made ears white.
Observation Almost all white ears were partly or fully sterile.
Observation Culm elongation was poor and stalk heights varied.
Observation Cold injury stopped pollen development and caused death and corruption.
Observation Abnormalities occurred in ovaries and anthers.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Night temperature 2°C below natural from the maximum stage did not promote Akiochi or decrease grain yield.

Taxon: RiceOryza sativat0
Treatment: 2°C 1owere0
Outcome: did note0

Not reportedComparatorDirection

Verbatim

t0
“Rice Plant”
✓ located verbatim in the source · title, characters 55–65

e0
“but 2°C 1ower plots did not”
✓ located verbatim in the source · abstract, characters 323–350

Title

Effect of Night Temperature at Ear-developing Stage on Rice Plant

S. ABE; M. WADA Japanese Journal of Crop Science 1957. doi:10.1626/jcs.26.99

Other claims from this paper (5)

Intervention effect High night temperature from the maximum tillers stage promoted Akiochi.
Intervention effect High night temperature from the maximum stage decreased grain yield.
Observation An 8 plot had the highest yield in the series treated from the maximum stage.
Intervention effect Higher night temperature from heading gave superior yield to natural temperature.
Intervention effect Lower night temperature from heading gave inferior yield to natural temperature.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

With 10 or 15 cm deep water, rice yield showed no decrease compared with 3 cm submergence.

Taxon: rice plantOryza sativae0
Treatment: 10 or 15 cm. deep watere0
Outcome: yielde0
Direction: no decreasee0
Comparator: 3 cm. submergencee0

Verbatim

e0
“With 10 or 15 cm. deep water, growth of rice plant was suppressed at the early stage of tillering period, but afterwards it was recovered and became better than that under 3 cm. submergence, showing no decrease in yield”
✓ located verbatim in the source · abstract, characters 580–799

Title

Studies on Weed Control by Submergence in Rice Cultivation : I. Effect of submergence on the structure of weed communities and the quantity of weeds : II. Effect of submergenec on the growth and yield of rice plant

Masao ARAI; Masuzi MIYAHARA Japanese Journal of Crop Science 1956. doi:10.1626/jcs.24.163

Other claims from this paper (5)

Intervention effect Under 10 or 15 cm deep submergence, absolute weed quantity was smaller than under 3 cm deep submergence.
Intervention effect Under 10 or 15 cm deep submergence, the relative quantity of weeds resistant to 2,4-D was smaller than under 3 cm deep submergence.
Intervention effect With 10 or 15 cm deep water, rice growth was suppressed at the early tillering stage.
Intervention effect With 10 or 15 cm deep water, rice growth afterwards recovered and became better than under 3 cm submergence.
Recommendation The authors suggest weeds could be controlled more effectively by combining deep submergence with 2,4-D herbicide spray.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

May fertilizer failed to decrease take-all.

Taxon: winter wheatTriticum aestivumt0
Treatment: Fertilizer applied in Maye0
Outcome: take‐alle0
Direction: failed to decreasee0

Not reportedComparator

Verbatim

e0
“Fertilizer applied in May increased weed growth, failed to decrease take‐all”
✓ located verbatim in the source · abstract, characters 1358–1434

t0
“WINTER WHEAT”
✓ located verbatim in the source · title, characters 94–106

Title

EFFECT OF NITROGENOUS FERTILIZER APPLIED AT DIFFERENT DATES ON TAKE‐ALL, EYESPOT AND YIELD OF WINTER WHEAT GROWN ON LIGHT SANDY LOAM

G. A. SALT Annals of Applied Biology 1959. doi:10.1111/j.1744-7348.1959.tb02537.x

Other claims from this paper (16)

Intervention effect Fertilized Cappelle yielded 50 cwt per acre versus 19 unfertilized.
Intervention effect Fertilized Holdfast yielded 41 cwt per acre versus 20 unfertilized.
Observation Repeated cropping reduced mean yield from 27 to 15 and 10 cwt per acre.
Observation Ear number decreased from 16.7 to 14.6 and 12.2.
Observation Weight of grain per ear decreased strikingly.
Observation Small grain proportion increased.
Observation Eyespot was present every year but did not become prevalent.
Observation Take-all affected straw rose from 9 to 15 and 26 percent.
Observation Weed infestation increased severely.
Intervention effect April Nitro-Chalk yielded the most grain each year.
Intervention effect April fertilizer reduced eyespot relative to March.
Intervention effect April fertilizer reduced take-all relative to March.
Intervention effect May fertilizer increased weed growth.
Intervention effect May fertilizer yielded fewer ears than earlier applications.
Intervention effect May fertilizer yielded less grain than earlier applications.
Intervention effect May fertilizer yielded a higher tailcorn proportion than earlier applications.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Pre-emergence spray of 150 g 2,4-D per 10 ares did not decrease soybean yield.

Taxon: soybeanGlycine maxe0
Treatment: pre-emergence spray of 150 grams of 2, 4-D per 10 arese0
Outcome: the yield of soybeane0
Direction: without decreasinge0

Not reportedComparator

Verbatim

e0
“The pre-emergence spray of 150 grams of 2, 4-D per 10 ares was considerably effective for the weed without decreasing the yield of soybean”
✓ located verbatim in the source · abstract, characters 1015–1153

Title

Some tests on the weed control in sweet potato and soybean fields with 2, 4-D

Yasuo KASAHARA; Tadaji KIMURA; Osamu KINOSITA Japanese Journal of Crop Science 1954. doi:10.1626/jcs.22.3-4_5

Other claims from this paper (17)

Observation Crab grass is a dominant weed in both sweet potato and soybean fields.
Observation Crab grass is resistant to 2,4-D.
Observation Both sweet potato and soybean are susceptible to 2,4-D.
Recommendation Post-emergence 2,4-D spray on these crops cannot be expected to be a practical weed-control means.
Intervention effect Sweet potato yield under pre-planting 2,4-D equalled that of the weeded plot.
Intervention effect Weeds were reduced to about 1/10 to 1/3 of those in the untreated plot after 2,4-D pre-planting treatment.
Intervention effect All sweet potato slips planted after 2,4-D treatment took root and crop growth was not retarded.
Intervention effect Sweet potato planted immediately after 2,4-D application was severely injured, particularly in the drought year.
Intervention effect Moistening and dusting sweet potato roots with active carbon relieved the 2,4-D injury to some extent.
Intervention effect Pre-emergence spray of 150 g 2,4-D per 10 ares was considerably effective against the weeds in soybean.
Intervention effect A 2,4-D spray above 150 grams was injurious to soybean growth.
Intervention effect Seeds coated with active carbon before sowing were not injured even by a spray of 450 g 2,4-D.
Mechanism The absence of injury was attributed to a protecting action of active carbon.
Intervention effect Between-row soil treatment with 2,4-D after tillage was more effective on annual weeds than pre-emergence treatment.
Intervention effect Soybean was not injured by 100 g 2,4-D per 10 ares on dry soil.
Intervention effect Soybean was not injured by 200 g 2,4-D on moist soil.
Association Yield decreased as the amount of 2,4-D applied increased.

Intervention effectauthor interpretationoriginal resultno effectmeasured

Claim · model-written summary

Sulphate of ammonia dressings did not decrease the yield of lucerne.

Taxon: lucerneMedicago sativae0
Treatment: sulphate of ammoniae0
Outcome: the yield of lucernee1
Direction: without decreasinge1

Not reportedComparator

Verbatim

e0
“An experiment, carried out to determine the effect of dressings of sulphate of ammonia on an established lucerne-cocksfoot ley grown in narrow rows on heavy gault clay soil, is described and the results discussed”
✓ located verbatim in the source · abstract, characters 0–212

e1
“The results suggest that it is possible to increase the yields of grass and total produce without decreasing the yield of lucerne but that no marked increase in the yield of nitrogen per acre is to be expected”
✓ located verbatim in the source · abstract, characters 315–524

Title

Studies on lucerne and lucerne-grass leys II. The nitrogenous manuring of a lucerne-cocksfoot ley

W. J. Ridgman; F. Hanley; M. G. Barker The Journal of Agricultural Science 1955. doi:10.1017/s0021859600040508

Other claims from this paper (3)

Intervention effect Sulphate of ammonia dressings may increase yields of grass and total produce in a lucerne-cocksfoot ley.
Intervention effect No marked increase in the yield of nitrogen per acre is expected from sulphate of ammonia dressings on lucerne-cocksfoot leys.
Intervention effect February was the most effective time of applying sulphate of ammonia to the lucerne-cocksfoot ley.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Neither insecticide changed end-of-season cotton yield for Acala 1517C.

Taxon: cottonGossypium hirsutume0
Material: Acala 1517Ce0
Treatment: treatmentse0
Outcome: yield of cottone0
Direction: neither variety showed a decrease nor increasee0
Qualifier: at the end of the seasone0

Not reportedComparator

Verbatim

e0
“The Acala 1517C reacted in a somewhat different manner to the treatments but neither variety showed a decrease nor increase in yield of cotton at the end of the season.”
✓ located verbatim in the source · abstract, characters 242–410

t0
“Effects of Systemic Insecticide Seed Treatments on Two Varieties of Cotton1”
✓ located verbatim in the source · title, characters 0–75

Title

Effects of Systemic Insecticide Seed Treatments on Two Varieties of Cotton1

R. C Dobson Journal of Economic Entomology 1958. doi:10.1093/jee/51.4.495

Other claims from this paper (5)

Intervention effect Thimet reduced Pima S-1 seedling stands.
Intervention effect Bayer 19639 reduced Pima S-1 seedling stands.
Intervention effect Thimet retarded Pima S-1 blossoming.
Intervention effect Thimet reduced early-season Pima S-1 growth.
Intervention effect Neither insecticide changed end-of-season cotton yield for Pima S-1.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Neither insecticide changed end-of-season cotton yield for Pima S-1.

Taxon: cottonGossypium hirsutume0
Material: Pima S-1e1
Treatment: treatmentse0
Outcome: yield of cottone0
Direction: neither variety showed a decrease nor increasee0
Qualifier: at the end of the seasone0

Not reportedComparator

Verbatim

e0
“The Acala 1517C reacted in a somewhat different manner to the treatments but neither variety showed a decrease nor increase in yield of cotton at the end of the season.”
✓ located verbatim in the source · abstract, characters 242–410

t0
“Effects of Systemic Insecticide Seed Treatments on Two Varieties of Cotton1”
✓ located verbatim in the source · title, characters 0–75

e1
“Pima S-1 and Acala 1517C cotton”
✓ located verbatim in the source · abstract, characters 65–96

Title

Effects of Systemic Insecticide Seed Treatments on Two Varieties of Cotton1

R. C Dobson Journal of Economic Entomology 1958. doi:10.1093/jee/51.4.495

Other claims from this paper (5)

Intervention effect Thimet reduced Pima S-1 seedling stands.
Intervention effect Bayer 19639 reduced Pima S-1 seedling stands.
Intervention effect Thimet retarded Pima S-1 blossoming.
Intervention effect Thimet reduced early-season Pima S-1 growth.
Intervention effect Neither insecticide changed end-of-season cotton yield for Acala 1517C.

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“yield decrease”

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