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 resultpositivemeasured

Claim · model-written summary

Increasing the number of ploughings decreased Hoplolaimus indicus and other nematode populations

Taxon: wheatTriticum aestivume2
Treatment: number of ploughingse3
Interactor: Hoplolaimus indicusHoplolaimus indicuse3pest
Second interactor: Longidorus sp.Longidoruse3pest
Outcome: Hoplolaimus indicus, Helicotylenchus sp., Tylenchorhynchus vulgaris, Pratylenchus zeae and Longidorus sp.e3
Direction: decreasee3

Not reportedComparator

Verbatim

e2
“wheat yield was reduced to about four times (2.80 kgs) in comparison to plots which received DD treatment (8.40 kgs)”
✓ located verbatim in the source · abstract, characters 542–658

e3
“Increase in the number of ploughings resulted in a corresponding decrease of Hoplolaimus indicus, Helicotylenchus sp., Tylenchorhynchus vulgaris, Pratylenchus zeae and Longidorus sp., and also corresponding increase in corp yield was observed”
✓ located verbatim in the source · abstract, characters 660–902

Title

Effect of agronomical practices and DD application on nematode population and crop yield

Mohammad Mahfujul Haque; D. Prasad Indian Journal Of Nematology 1981

Other claims from this paper (8)

Intervention effect Three ploughings had a superior effect compared with fallow on nematode population and crop yield
Intervention effect Highest total nematode population was found in fallow plots
Intervention effect Fallow reduced wheat yield to 2.80 kgs compared with DD treatment
Observation Wheat yield was 8.40 kgs in plots that received DD treatment
Intervention effect Increasing the number of ploughings increased wheat yield
Intervention effect Fallow decreased maize yield (3.89 kgs) compared with DD treatment
Intervention effect DD treatment increased maize yield (11.19 kgs) compared with fallow
Observation Nematode population build-up was highest in plots that preceded fallow

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Increasing nitrogen fertilizer rate tended to increase sugarbeet root yield.

Taxon: sugarbeetsBeta vulgaris subsp. vulgarise0
Treatment: nitrogen fertilizer ratee1
Outcome: Root yieldse1
Direction: increasee1
Qualifier: tended toe1

Not reportedComparator

Verbatim

e0
“The major response of sugarbeets was to nitrogen fertilizer”
✓ located verbatim in the source · abstract, characters 92–151

e1
“Root yields tended to increase and sucrose percentages decrease as the nitrogen fertilizer rate was increased”
✓ located verbatim in the source · abstract, characters 153–262

Title

Sugarbeet Production Response to Water and Nitrogen Fertilizer

John M. Nelson UA Campus Repository (The University of Arizona) 1981

Other claims from this paper (4)

Intervention effect Increasing nitrogen fertilizer rate decreased sugarbeet sucrose percentage.
Intervention effect Irrigation treatments had generally small effect on sugarbeet production.
Recommendation Considerable quantities of water can be conserved in sugarbeet production within the irrigation range compared, without greatly influencing sugar production.
Association Nitrogen fertilizer was the major response factor of sugarbeets.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Applied GA3 decreased grain number in wheat.

Taxon: wheatTriticum aestivumt0
Treatment: applied GA3e1
Outcome: grain numbere1
Direction: decreasinge1

Not reportedComparator

Verbatim

t0
“wheats”
✓ located verbatim in the source · title, characters 77–83

e1
“The general effect of applied GA3was to decrease grain yield per head, mainly by decreasing the grain number”
✓ located verbatim in the source · abstract, characters 323–431

Title

Grain yield responses to applied gibberellin in normal-height and semi-dwarf wheats

MS Rahman; RG Flood; GM Halloran Australian Journal of Agricultural Research 1981. doi:10.1071/ar9810243

Other claims from this paper (6)

Intervention effect Applied GA3 decreased grain yield per head in wheat.
Intervention effect Applying GA3 to the leaves alone at heading increased yield in two normal-height wheats due to increased grain number.
Intervention effect Applying GA3 jointly to the leaves and head at anthesis increased yield in two normal-height wheats due to increased grain number.
Intervention effect Applications decreased the mean grain size of semi-dwarf wheats.
Intervention effect The grain size response of normal-height wheats to applications ranged from little change to a significant increase.
Observation No distinct group differences in yield response were found between normal-height and semidwarf wheats.

Observationobservedoriginal resultpositivesimulated

Claim · model-written summary

The desired gain index predicted a 2.7% yield increase.

Taxon: Spring WheatTriticum aestivumt0
Treatment: desired gain indexe0
Outcome: yielde0
Direction: increasee0
Value: 2.7%e0

Verbatim

e0
“A 2.7% increase in yield and percent protein, and a 2.7% decrease in plant height were predicted for selection based upon a desired gain index.”
✓ located verbatim in the source · abstract, characters 1450–1593

t0
“Spring Wheat”
✓ located verbatim in the source · title, characters 58–70

Title

Selection Indices to Improve an Intermating Population of Spring Wheat¹

W. C. Wells; K. D. Kofoid Crop Science 1986. doi:10.2135/cropsci1986.0011183x002600060003x

Other claims from this paper (13)

Observation Broad sense heritabilities were high for all measured characters.
Association Yield and percent protein had negative genotypic and phenotypic covariances.
Association Covariances of yield and percent protein with plant height and kernel weight were positive.
Method / resource The Smith-Hazel index maximized predicted aggregate genotype gains.
Observation The Smith-Hazel index predicted a 9.6% yield increase.
Observation The Smith-Hazel index predicted a 0.3% decrease in plant height.
Observation The Smith-Hazel index predicted a 1.1% increase in percent protein.
Method / resource Base and restricted indices predicted similar responses.
Observation The desired gain index predicted a 2.7% protein increase.
Observation The desired gain index predicted a 2.7% height decrease.
Method / resource Secondary characters did not appreciably increase predicted index efficiency.
Recommendation Indices designed to improve aggregate genotype should develop NDP1 as a source of high yielding conventional height lines.
Recommendation A desired gain index should be considered to obtain high yielding, high protein semidwarf lines.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

The y\sb9 allele reduced yield by 333 kg per hectare.

Taxon: SoybeanGlycine maxe1
Gene: $y\sb9$e0
Outcome: yielde0
Direction: decreaseinferrede0
Value: $-$333 kg ha$\sp{-1}$e0

Verbatim

e0
“Individual gene effects on yield ranged from $-$333 kg ha$\sp{-1}$ for $y\sb9$ to +279 kg ha$\sp{-1}$ for $dt\sb1$.”
✓ located verbatim in the source · abstract, characters 696–811

e1
“Soybean (Glycine max (L.) Merr.)”
✓ located verbatim in the source · abstract, characters 0–32

Title

Agronomic responses to a factorial combination of soybean canopy modifying genes

Clement Weidenbenner Lincoln (University of Nebraska) 1989

Other claims from this paper (13)

Association The dt\sb1 allele increased yield by 279 kg per hectare.
Observation Yield epistasis occurred in six of ten two-way gene interactions.
Observation Pd\sb1Dt\sb1 yielded 2,284 kg per hectare.
Observation Pd\sb1dt\sb1 yielded 2,711 kg per hectare.
Observation pd\sb1Dt\sb1 yielded 2,466 kg per hectare.
Observation pd\sb1dt\sb1 yielded 2,597 kg per hectare.
Association Gene effects interacted with cultivar background.
Association Alleles for growth habit, leaf color and pubescence density significantly altered correlations among agronomic traits.
Association Yield and height were positively correlated for dt\sb1.
Mechanism Selection for yield in determinate lines would indirectly select taller plants.
Recommendation The authors found dt\sb1 most promising for soybean improvement.
Recommendation The authors found Lf\sb1ln a promising combination.
Recommendation The authors found Pd\sb1dt\sb1 a promising combination.

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Potassium content was negatively correlated with sodium content.

Taxon: yam beant0
Compound: Ke0
Outcome: Na contente0
Direction: decreasee0
Value: r = ‐0.72e0

Verbatim

t0
“yam bean”
✓ located verbatim in the source · title, characters 86–94

e0
“Increased K content was quadratic for increased K additions with concomitant decrease in Na content having highly significant negative correlation (r = ‐0.72)”
✓ located verbatim in the source · abstract, characters 1506–1664

Title

Effects of soil fertility on growth, tuber yield, nodulation and nitrogen fixation of yam bean ( Pachyrhizus erosus (L.) urban) grown on a typic eutrustox

J. Q. Lynd; A. A. C. Purcino Journal of Plant Nutrition 1987. doi:10.1080/01904168709363587

Other claims from this paper (11)

Intervention effect P additions significantly increased yam bean growth and tuber production.
Intervention effect Ca and K combined with P increased yam bean growth and tuber production.
Association Nodule weight and nitrogenase activity responded to soil treatments similarly to tuber and aboveground growth.
Intervention effect P, Ca and P + Ca significantly increased tuber epidermal ureide content.
Intervention effect Tuber epidermal ureide content rose quadratically with K additions combined with P and Ca treatments.
Association A multiple regression of nitrogenase on top, tuber and nodule weight and ureide yielded R2 of 0.88.
Intervention effect Soil treatments did not significantly affect tuber nonstructural carbohydrate percentage.
Intervention effect P treatments significantly increased total tuber nitrogen content.
Intervention effect Nodule cytosol nutrient elements generally increased with addition of the corresponding soil element.
Intervention effect Nodule potassium content rose quadratically with increasing potassium additions.
Recommendation Adequate soil P, Ca and K favored tuber growth and nitrogen fixation, with P first limiting high tuber yields.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Compaction remained evident in postharvest soil through decreased hydraulic conductivity.

Taxon: groundnutArachis hypogaeat0
Outcome: hydraulic conductivitye0
Direction: decreasee0
Qualifier: post‐harvest soilse0

Verbatim

e0
“The effect of compaction was seen at the post‐harvest soils also, in that the increase in bulk density, decrease in hydraulic conductivity were observed.”
✓ located verbatim in the source · abstract, characters 695–848

t0
“groundnut”
✓ located after whitespace/quote normalisation · title, characters 75–84

Title

Effect of Ten Successive Rollings on Soil Physical Properties and Yield of Groundnut (var. TMV 3) in a Very Permeable Sandy Soil in Southern India

R. Natesan; K. K. Mathan; B. Rajkannan Journal of Agronomy and Crop Science 1989. doi:10.1111/j.1439-037x.1989.tb00772.x

Other claims from this paper (6)

Intervention effect Rolling increased soil bulk density from 1.50 to 1.63 g/cc in the 20–30 cm layer.
Intervention effect Rolling reduced hydraulic conductivity in the 20–30 cm soil layer.
Intervention effect Rolling increased soil moisture retention by 51.5 per cent over control in the 30–40 cm layer.
Intervention effect Rolling increased final dry pod yield by 19 per cent over control.
Observation Compaction remained evident in postharvest soil through increased bulk density.
Observation The soil variations were most effective at 10–20 cm depth.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Lower soil pH decreased leaf Cu, Zn, Mg and Ca.

Taxon: sorghumSorghumt0
Treatment: pH decreased from 5.5 to 4.4e0
Outcome: Cu, Zn, Mg, Cae0
Direction: decreasee0
Comparator: 5.5e0

Verbatim

e0
“as pH decreased from 5.5 to 4.4, there was an increase in plant Al, Fe, Mn, K, P and a decrease in Cu, Zn, Mg, Ca.”
✓ located verbatim in the source · abstract, characters 622–736

t0
“sorghum”
✓ located verbatim in the source · title, characters 49–56

Title

Leaf elemental concentrations and grain yield of sorghum grown on an acid soil

R. R. Duncan; J. W. Dobson; C. D. Fisher Communications in Soil Science and Plant Analysis 1980. doi:10.1080/00103628009367073

Other claims from this paper (3)

Intervention effect Sorghum grain yield declined 96% as soil pH fell from 5.5 to 4.4.
Intervention effect Lower soil pH increased leaf Al, Fe, Mn, K and P.
Association Interactions among several measured leaf elements were apparent.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

After waterlogging during tillering, grain loss was accounted for entirely by fewer ear-bearing tillers.

Taxon: winter wheatTriticum aestivumt0
Treatment: waterlogging during tilleringe5
Outcome: number of ear‐bearing tillerse5
Direction: decreasee5
Qualifier: grain loss was accounted for entirely bye5

Not reportedComparator

Verbatim

t0
“Effects of single and multiple waterloggings on the growth and yield of winter wheat on a clay soil”
✓ located verbatim in the source · title, characters 0–99

e5
“After waterlogging during tillering, grain loss was accounted for entirely by a decrease in the number of ear‐bearing tillers”
✓ located verbatim in the source · abstract, characters 1142–1267

Title

Effects of single and multiple waterloggings on the growth and yield of winter wheat on a clay soil

Robert K. Belford; Robert Q. Cannell; Robert J. Thomson Journal of the Science of Food and Agriculture 1985. doi:10.1002/jsfa.2740360304

Other claims from this paper (11)

Intervention effect Pre-emergence waterlogging restricted winter wheat plant population to 35 m-2 compared with 338 m-2 under free drainage.
Observation Oxygen concentration in the soil declined most rapidly during waterlogging when the soil was warmer and at shallower depths.
Association A decrease in soil solution nitrate during waterlogging was accompanied by an increase in nitrous oxide evolution.
Intervention effect Waterlogging before emergence gave a greater proportion of surviving tillers.
Intervention effect Waterlogging before emergence left the flag leaves larger.
Intervention effect Waterlogging before emergence gave fewer ears at harvest in all treatments.
Mechanism Compensatory growth after early waterlogging results from diminished interplant competition for nitrogen, water and light.
Intervention effect After waterlogging during stem elongation, yield losses were associated with fewer grains per spikelet.
Intervention effect Single waterlogging depressed grain yield by about 4–12%.
Intervention effect Any two waterloggings depressed grain yield by 20%.
Intervention effect Waterlogging on all three occasions depressed grain yield by 32%.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Spring fungicides generally increased at least one yield component.

Taxon: Winter BarleyHordeum vulgaret0
Treatment: Applications of fungicidese0
Outcome: one or more yield componentse0
Direction: increasee0

Not reportedComparator

Verbatim

e0
“Applications of fungicides during the spring epidemics generally resulted in a significant decrease in disease severity and an increase in one or more yield components.”
✓ located verbatim in the source · abstract, characters 1099–1267

t0
“Winter Barley”
✓ located verbatim in the source · title, characters 67–80

Title

Effects of Planting Date on Development of Net Blotch Epidemics in Winter Barley in Pennsylvania

L. M. Delserone Plant Disease 1987. doi:10.1094/pd-71-0438

Other claims from this paper (6)

Intervention effect Earliest planting had greatest fall net blotch severity and latest planting least.
Observation Warm humid spring conditions eliminated prior planting-date differences in disease severity.
Intervention effect Planting date significantly influenced spring net blotch severity during less favorable spring weather.
Intervention effect Latest planting generally gave the greatest seeds per head, thousand-kernel weight, and calculated yield.
Intervention effect Spring fungicides generally significantly decreased net blotch severity.
Intervention effect Mid- to late-September planting produced the lowest net blotch severity and greatest yields at either location.

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