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

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Rice grain yield tended to rise as spacing between plants decreased.

Taxon: RiceOryza sativat0
Treatment: spacing between plantse0
Outcome: grain yielde0
Direction: increasee0

Verbatim

e0
“increase in grain yield along with the decrease in spacing between plants was observed”
✓ located verbatim in the source · abstract, characters 1154–1240

t0
“Effect of Weeding Regime and Plant Spacings on Weed Growth and Performance of Transplanted Rice”
✓ located verbatim in the source · title, characters 0–95

Title

Effect of Weeding Regime and Plant Spacings on Weed Growth and Performance of Transplanted Rice

N. U. Ahmed; M. Z. Hoque Tropical Pest Management 1981. doi:10.1080/09670878109413650

Other claims from this paper (11)

Intervention effect Weeding treatments did not significantly differ from unweeded control in rice grain yield at closer spacings.
Intervention effect Weeding treatments did not significantly differ from unweeded control in rice panicle number at closer spacings.
Intervention effect Weeded plots had fewer weeds at harvest than unweeded controls at all spacings.
Intervention effect Weeding regime significantly affected weed weight except at 20 × 2.5 cm.
Intervention effect At 20 × 2.5 cm, weeded and unweeded plots did not differ significantly in weed weight.
Intervention effect Plant spacing significantly affected rice grain yield.
Intervention effect Plant spacing significantly affected weed weight.
Intervention effect Plant spacing did not affect rice panicle number.
Intervention effect Plant spacing did not affect weed counts.
Intervention effect Rice yielded more at 20 × 2.5 cm than at 20 × 15 cm or 20 × 20 cm.
Recommendation The authors suggested weed control may be unnecessary for higher rice yield at close spacings.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

High initial nitrogen with clear mulch significantly decreased marketable tomato fruit percentage in 1982.

Taxon: tomatoesSolanum lycopersicume0 t0
Treatment: high initial N rate, combined with clear plastic mulche0
Outcome: percent marketable fruite0
Direction: decreasee0
Qualifier: 1982e0

Not reportedComparator

Verbatim

e0
“high initial N rate, combined with clear plastic mulch, led to a significant decrease in percent marketable fruit in 1982.”
✓ located verbatim in the source · abstract, characters 995–1117

t0
“Tomatoes”
✓ located verbatim in the source · title, characters 64–72

Title

Growth, Yield, and Nutrient Uptake of Transplanted Fresh-market Tomatoes as Affected by Plastic Mulch and Initial Nitrogen Rate

H.C. Wien; P.L. Minotti Journal of the American Society for Horticultural Science 1987. doi:10.21273/jashs.112.5.759

Other claims from this paper (12)

Intervention effect Plastic mulch increased the rate of basal branch appearance in tomatoes.
Intervention effect Plastic mulch led to early branch flowering in tomatoes.
Intervention effect Mulch increased final-harvest tomato vine weight in both study years.
Intervention effect Mulch increased early tomato yield only in 1983.
Intervention effect Mulch increased total tomato yield by 13% in 1982.
Intervention effect Mulch increased total tomato yield by 79% in 1983.
Intervention effect Initial nitrogen rate did not significantly influence total tomato yield in either year.
Intervention effect Mulch increased tomato shoot concentrations of N, NO 3 -N and P in 1983.
Intervention effect Mulch increased tomato shoot concentrations of K, Ca and Mg in 1983.
Intervention effect Mulch increased tomato shoot concentrations of Cu and Β in 1983.
Intervention effect Nitrogen fertilizer increased tomato shoot N concentration, less than mulch did.
Intervention effect Nitrogen fertilizer increased tomato shoot P concentration, less than mulch did.

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Percentage protein and yield were negatively correlated (r = -0.14).

Taxon: wheatTriticum aestivumt0
Outcome: yielde0
Direction: decreaseinferrede0
Value: $-$0.14e0
Qualifier: percentage proteine0
Setting: replicated yield trialse1

Verbatim

t0
“soft red winter wheat”
✓ located verbatim in the source · title, characters 97–118

e0
“Significant correlations were found between percentage protein and PSI ($-$0.52), AWRC (0.51), and yield ($-$0.14)”
✓ located verbatim in the source · abstract, characters 1088–1202

e1
“grown in replicated yield trials from 1983 to 1985”
✓ located verbatim in the source · abstract, characters 266–316

Title

Inheritance of percentage protein, particle size index, and alkaline water retention capacity in soft red winter wheat

B. Edge Purdue e-Pubs (Purdue University System) 1989

Other claims from this paper (16)

Intervention effect Seeding rate (355 vs 118 seeds/m2) had no effect on wheat quality traits.
Observation Hybrids differed significantly from their midparents for all quality traits measured.
Observation For each trait, some crosses showed additive gene action.
Observation Dominance for high percentage protein was present in six of the seven crosses.
Observation Low PSI (poor soft wheat quality) was dominant in three crosses.
Observation Additive effects for PSI occurred in the remaining four crosses.
Observation Additive effects were predominant for AWRC.
Association Percentage protein and PSI were significantly negatively correlated (r = -0.52).
Association Percentage protein and AWRC were positively correlated (r = 0.51).
Association PSI and AWRC were negatively correlated (r = -0.76).
Association Yield was not correlated with either PSI or AWRC.
Recommendation PSI and AWRC can be improved without causing a reduction in yield.
Observation The two parents differ by at least two genes for percentage protein.
Observation The two parents differ by three genes for AWRC.
Observation The two parents differ by three genes for PSI.
Observation Results from the Beau and Lovrin-11 populations were inconclusive.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Total plant dry weight fell 26% from its maximum to commercial harvest.

Taxon: poppiest0
Outcome: total plante0
Direction: decreasee0
Value: 26%e0
Qualifier: commercial harvest (8 weeks after full bloom)e0

Verbatim

e0
“For the total plant this decrease between maximum dry weight and that at the time of commercial harvest (8 weeks after full bloom) amounted to 26%”
✓ located verbatim in the source · abstract, characters 560–706

t0
“poppies (Papaver somniferumL.)”
✓ located verbatim in the source · title, characters 57–87

Title

The effect of time of harvest on the yield components of poppies (Papaver somniferumL.)

J. C. Laughlin The Journal of Agricultural Science 1980. doi:10.1017/s0021859600088067

Other claims from this paper (11)

Observation Total plant and non-seed component dry matter peaked 2–3 weeks after full bloom, then declined.
Observation Terminal capsule dry weight fell 37% by commercial harvest.
Observation Lateral capsule dry weight fell 15% by commercial harvest.
Observation Stem plus leaf dry weight fell 39% by commercial harvest.
Observation Seed dry matter reached a maximum by four weeks after full bloom and remained constant.
Observation Capsule morphine concentration peaked at 1·1% six weeks after bloom.
Observation Capsule morphine concentration declined about 10% by dry harvest.
Observation Stem and leaf morphine concentration peaked at 0·1%.
Observation Stem and leaf morphine concentration halved by commercial harvest.
Observation Whole plant morphine yields were similar for harvests two to seven weeks after bloom.
Observation Whole plant harvest yielded about 50% more morphine than capsules alone at commercial harvest.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Dry maize grain yield was 52% of wet trial yield.

Taxon: maizeZea mayse0
Outcome: Grain yieldse0
Direction: decreaseinferrede0
Value: 52e0
Comparator: wet triale0

Verbatim

e0
“Grain yields under dry conditions were 52, 58 and < 10% of the corresponding yields in the wet trial in maize, sorghum and the 3 rice cultivars, respectively.”
✓ located verbatim in the source · abstract, characters 1011–1169

Title

Growth and yield of rice cultivars under sprinkler irrigation in south-eastern Queensland. 2. Comparison with maize and grain sorghum under wet and dry conditions

P Inthapan; S Fukai Australian Journal of Experimental Agriculture 1988. doi:10.1071/ea9880243

Other claims from this paper (12)

Observation Under weekly irrigation, rice grain yield was lower than sorghum and maize yields.
Observation Rice converted solar radiation to dry matter inefficiently under weekly irrigation.
Observation Total radiation interception and harvest index were similar among the three species.
Observation Under dry conditions, rice intercepted less radiation than the other two cereals.
Observation Dry conditions reduced radiation conversion efficiency more in rice.
Observation Total rice dry matter production was severely reduced in dry conditions.
Observation Dry sorghum grain yield was 58% of wet trial yield.
Observation Dry rice grain yields were below 10% of wet trial yields.
Observation Dry conditions delayed heading in rice.
Observation Dry conditions severely affected grain set in two quick maturing rice cultivars.
Observation IR43 did not head during the 163 day experiment.
Observation Shinhakaburi produced higher biomass than Labelle and IR43 at maturity.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Dry sorghum grain yield was 58% of wet trial yield.

Taxon: sorghumSorghume0
Outcome: Grain yieldse0
Direction: decreaseinferrede0
Value: 58e0
Comparator: wet triale0

Verbatim

e0
“Grain yields under dry conditions were 52, 58 and < 10% of the corresponding yields in the wet trial in maize, sorghum and the 3 rice cultivars, respectively.”
✓ located verbatim in the source · abstract, characters 1011–1169

Title

Growth and yield of rice cultivars under sprinkler irrigation in south-eastern Queensland. 2. Comparison with maize and grain sorghum under wet and dry conditions

P Inthapan; S Fukai Australian Journal of Experimental Agriculture 1988. doi:10.1071/ea9880243

Other claims from this paper (12)

Observation Under weekly irrigation, rice grain yield was lower than sorghum and maize yields.
Observation Rice converted solar radiation to dry matter inefficiently under weekly irrigation.
Observation Total radiation interception and harvest index were similar among the three species.
Observation Under dry conditions, rice intercepted less radiation than the other two cereals.
Observation Dry conditions reduced radiation conversion efficiency more in rice.
Observation Total rice dry matter production was severely reduced in dry conditions.
Observation Dry maize grain yield was 52% of wet trial yield.
Observation Dry rice grain yields were below 10% of wet trial yields.
Observation Dry conditions delayed heading in rice.
Observation Dry conditions severely affected grain set in two quick maturing rice cultivars.
Observation IR43 did not head during the 163 day experiment.
Observation Shinhakaburi produced higher biomass than Labelle and IR43 at maturity.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Both pea cultivars had the same slope of yield response to soil salinity.

Taxon: PeaLathyrus oleraceust0
Outcome: same slope valuee1
Qualifier: at values < the threshold EC e valuee1

Verbatim

e1
“both cultivars exhibited the same slope value per unit decrease of EC e . at values < the threshold EC e value”
✓ located verbatim in the source · abstract, characters 1061–1171

t0
“Pea Cultivars”
✓ located verbatim in the source · title, characters 22–35

Title

Salt Tolerance of Two Pea Cultivars¹

A. Cerdá; M. Caro; F. G. Fernández Agronomy Journal 1982. doi:10.2134/agronj1982.00021962007400050007x

Other claims from this paper (7)

Observation SP‐290 had a soil salinity threshold of 2.5 dS/m for green pod yield.
Observation Durana had a soil salinity threshold of 4.5 dS/m for green pod yield.
Observation SP‐290 was classified as moderately salt sensitive.
Observation Durana was classified as moderately salt tolerant.
Intervention effect Salinity treatment affected pea leaf Cl and NO 3 −N concentrations.
Association Cultivar effects appeared in pea leaf Na, Ca, K, P and total N.
Mechanism The authors attributed reduced pea yield mainly to rootzone soil water osmotic potential.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Replacing husks immediately after peeling did not reduce kernel weight as much as the other treatments.

Taxon: maizeZea mayse0
Treatment: replacing husks immediately after peeling theme4
Outcome: kernel weighte4
Direction: did not decreasee4
Comparator: the other treatmentse4

Verbatim

e0
“The role of husks in maize ( Zea mays L.) grain development is unclear”
✓ located verbatim in the source · abstract, characters 0–70

e4
“replacing husks immediately after peeling them did not decrease kernel weight as much as did the other treatments”
✓ located verbatim in the source · abstract, characters 912–1025

Title

Husk Removal and Its Effects on Maize Grain Yield

D. W. Salvador; R. Brent. Pearce Crop Science 1988. doi:10.2135/cropsci1988.0011183x002800060019x

Other claims from this paper (7)

Intervention effect All husk manipulation treatments decreased maize grain yield, by 14.3% on average.
Intervention effect Leaving husks on the ear after peeling decreased maize grain yield by 8.6%, less than complete husk removal.
Intervention effect Complete husk removal decreased maize grain yield by 17.7%.
Intervention effect All husk manipulation treatments reduced kernel number per ear relative to the control.
Mechanism Husk removal reduced grain yield far more than the loss of husk photosynthesis can explain.
Mechanism Husks act as storage organs for remobilizable assimilate that support grain yield.
Mechanism Husks maintain an adequate moisture and temperature environment for the developing ear, supporting grain yield.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Cultivar S-83 increased yield more rapidly with advancing age than the other cultivars.

Taxon: Cynodon dactylonCynodon dactylone0
Material: S‐83e1
Outcome: yielde1
Direction: increasee1
Comparator: the other cultivarse1

Verbatim

e0
“Cynodon dactylon (L.) Pers.”
✓ located verbatim in the source · abstract, characters 41–68

e1
“One cultivar (S‐83) tended to increase in yield more rapidly and to decrease in IVDDM less rapidly with advancing age than the other cultivars”
✓ located verbatim in the source · abstract, characters 1316–1458

Title

Influence of Harvest Frequency and Season on Bermudagrass Cultivar Yield and Forage Quality¹

E. C. Holt; B. E. Conrad Agronomy Journal 1986. doi:10.2134/agronj1986.00021962007800030007x

Other claims from this paper (14)

Observation Coastal produced significantly more forage than the other cultivars.
Observation Coastal had the lowest in vitro dry matter digestibility of the cultivars.
Intervention effect Total annual forage yield increased by 0.15 Mg ha 1 for each day of advancing age at harvest beyond 14 days.
Intervention effect Total yields were 58% higher when harvested every 56 days than when harvested every 14 days.
Intervention effect 56-day-old forage had 89 g kg-1 less digestibility than 14-day-old forage.
Intervention effect 56-day-old forage had 180 g kg-1 less leaf content than 14-day-old forage.
Association Leafiness is closely correlated with age of forage at harvest.
Association Leafiness is not correlated with IVDDM within specified ages.
Observation Forage IVDDM declined from spring to early summer, independent of age at harvest.
Observation Young forage increased in IVDDM after midsummer.
Recommendation Cultivars of bermudagrass can be selected for higher forage digestibilities.
Association The IVDDM of forage declined by 2 g kg 1 of dry matter for each day of advancing age between 14 and 56 days.
Observation Cultivar S-83 decreased IVDDM less rapidly with advancing age than the other cultivars.
Observation Cultivars with higher digestibility follow the Coastal pattern of declining digestibility with increasing age and advancing season.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Chilling significantly decreased variable chlorophyll fluorescence, oxygen evolution quantum yield and stored photochemical energy.

Taxon: tomato plantsSolanum lycopersicume0
Treatment: mild chilling temperature and relatively low ambient photon flux densitye0
Outcome: variable chlorophyll fluorescence, the quantum yield of oxygen evolution and the amount of total absorbed energy stored in photochemical intermediatese0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Exposure of tomato plants to a mild chilling temperature and relatively low ambient photon flux density for an extended period (10°C and 400 μmol photons m −2 s −1 d and 5°C night for 6 d) resulted in a significant decrease in the variable chlorophyll fluorescence, the quantum yield of oxygen evolution and the amount of total absorbed energy stored in photochemical intermediates”
✓ located verbatim in the source · abstract, characters 9–390

Title

Prolonged chilling under moderate light: effect on photosynthetic activity measured with the photoacoustic method

D YAKIR; J. RUDICH; B. A. BRAVDO; et al. Plant Cell & Environment 1986. doi:10.1111/1365-3040.ep11616329

Other claims from this paper (4)

Intervention effect Chilling did not decrease chlorophyll concentration or ribulose biphosphate carboxylase activity.
Intervention effect Chilling had a relatively small influence on maximal Emerson effect.
Method / resource Photoacoustic measurements were useful for diagnosing and investigating stress effects on photochemistry.
Mechanism Photoinhibition may limit photosynthetic activity and productivity under Mediterranean winter conditions.

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