Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Herbicide injury and defoliation interacted to decrease soybean yield.

Taxon: soybeanGlycine maxe1
Treatment: herbicide injury and defoliatione3
Outcome: yielde3
Direction: decreasee3
Qualifier: interacted over 1990 and 1991e3

Not reportedComparator

Verbatim

e1
“seed yield of soybean [ Glycine max (L.) Merr.]”
✓ located verbatim in the source · abstract, characters 525–572

e3
“Moreover, herbicide injury and defoliation interacted over 1990 and 1991 to decrease yield”
✓ located verbatim in the source · abstract, characters 1207–1297

Title

Soybean Yield and Pest Management as Influenced by Nematodes, Herbicides, and Defoliating Insects

J. A. Browde; L. P. Pedigo; M. D. K. Owen; et al. Agronomy Journal 1994. doi:10.2134/agronj1994.00021962008600040005x

Other claims from this paper (10)

Intervention effect Herbicide injury reduced soybean yield in 1990 and 1991.
Intervention effect Defoliation reduced soybean yield in 1990 and 1991.
Intervention effect Defoliation reduced pods per plant in soybean.
Intervention effect Herbicide injury decreased pods per plant in soybean in 1990.
Intervention effect Herbicide injury decreased weight per seed in soybean in 1990 and 1991.
Intervention effect Soybean cyst nematode stress alone never affected soybean yield.
Intervention effect Interactions of soybean cyst nematode with herbicides and with defoliation reduced soybean yield in 1990.
Observation No treatment effects on soybean yield were found in 1989.
Recommendation Lower economic injury levels for green cloverworm were developed for soybean treated with acifluorfen plus bentazon.
Recommendation Growers should consider adjusting weed and insect management strategies for soybean fields infested with soybean cyst nematode.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Bromoxynil did not decrease mean yield of the three rice cultivars.

Taxon: RiceOryza sativat0
Treatment: Bromoxynile0
Outcome: average yielde0
Direction: did not decreasee0

Not reportedComparator

Verbatim

e0
“Bromoxynil did not decrease the average yield of any of the three cultivars.”
✓ located verbatim in the source · abstract, characters 855–931

t0
“Rice (Oryza sativa)”
✓ located verbatim in the source · title, characters 22–41

Title

Varietal Tolerance of Rice (Oryza sativa) to Bromoxynil and Triclopyr at Different Growth Stages

Dan J. Pantone; John B. Baker Weed Technology 1992. doi:10.1017/s0890037x00036551

Other claims from this paper (9)

Observation Tebonnet rice had 15% visible injury after triclopyr, averaged across rates and application times.
Observation Mars rice had 16% visible injury after triclopyr, averaged across rates and application times.
Observation Lemont rice had 25% visible injury after triclopyr, averaged across rates and application times.
Observation Tebonnet rice had 11% visible injury after bromoxynil.
Observation Mars rice had 8% visible injury after bromoxynil.
Observation Lemont rice had 7% visible injury after bromoxynil.
Observation Tebonnet was more tolerant than Lemont to triclopyr, with 6% mean grain yield reduction.
Observation Mars had 9% mean grain yield reduction from triclopyr.
Observation Lemont had 12% mean grain yield reduction from triclopyr.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

One simulated defoliation did not decrease cassava root yield.

Taxon: cassavaManihot esculentae0
Treatment: A single defoliatione0
Interactor: Z. variegatusZonocerus variegatuse0pest
Outcome: root yielde0
Direction: does not decreasee0

Not reportedComparator

Verbatim

e0
“A single defoliation of cassava (to simulate Z. variegatus feeding damage) does not decrease root yield, but additional ones do.”
✓ located verbatim in the source · abstract, characters 3181–3309

Title

Control of the variegated grasshopper Zonocerus variegatus (L.) on cassava

W. W. D. Modder TSpace 1994

Other claims from this paper (10)

Observation Early instars aggregate off farm, while later instars and adults move to crops when food becomes scarce.
Mechanism Aggregated feeding by larger grasshopper instars causes cassava leaves to wilt and lose HCN quickly.
Recommendation Eradication of Chromolaena odorata probably will not control the grasshopper.
Observation Chemical control is described as only short term effective and environmentally damaging.
Intervention effect Chemical sprays against the grasshopper kill parasitoids introduced for cassava mealybug control.
Intervention effect Exposing egg pods at the soil surface produced large grasshopper population reductions.
Intervention effect Fungal spores in kerosene and peanut oil killed 70-95% of field grasshopper populations.
Intervention effect A strain isolated from the grasshopper caused 90% mortality in 7-9 days in the laboratory.
Intervention effect Grasshoppers leaving spore baited traps died within 10 days, up to 30 m away.
Intervention effect Additional defoliations decreased cassava root yield.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing soybean frequency tended to decrease yield.

Taxon: SoybeanGlycine maxt0
Treatment: increase in frequency of soybean in the rotatione0
Outcome: yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Severity of BSR tended to increase, and yield and seed weight of soybean tended to decrease with an increase in frequency of soybean in the rotation.”
✓ located verbatim in the source · abstract, characters 1232–1381

t0
“Soybean”
✓ located verbatim in the source · title, characters 74–81

Title

Tillage, Rotation Sequence, and Cultivar Influences on Brown Stem Rot and Soybean Yield

E. A. Adee; E. S. Oplinger; C. R. Grau jpa 1994. doi:10.2134/jpa1994.0341

Other claims from this paper (19)

Intervention effect BSR severity was 38% greater under NT than CT.
Intervention effect Soybean yield was 10% less under NT than CT.
Intervention effect In annual alternation, BSR severity was 30% greater under NT.
Intervention effect In annual alternation, yield was 15% lower under NT.
Intervention effect First year soybean after corn had less severity of BSR than annually alternated soybean.
Intervention effect First year soybean after corn had greater yield than annually alternated soybean.
Intervention effect First year soybean after corn had greater seed weight than annually alternated soybean.
Intervention effect Increasing soybean frequency tended to increase Severity of BSR.
Intervention effect Increasing soybean frequency tended to decrease seed weight.
Intervention effect Corsoy 79 had greater Severity of BSR than BSR 101.
Intervention effect Corsoy 79 had less yield than BSR 101.
Intervention effect Corsoy 79 had lower seed weight than BSR 101.
Intervention effect BSR 101 severity was 90% below Corsoy 79.
Intervention effect BSR 101 severity did not differ between NT and CT.
Intervention effect BSR 101 yield was 5% less in NT than CT.
Intervention effect BSR 101 yield was 24% higher than Corsoy 79.
Intervention effect NT reduced seed weight versus CT.
Intervention effect NT increased lodging versus CT.
Recommendation BSR resistant cultivars can reduce the adverse interaction of tillage and rotation.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Infection beginning at tillering or grain filling caused no observed yield loss or yield-component decrease.

Taxon: riceOryza sativae1
Organ / stage: tillering or grain fillinge0
Treatment: infectione0
Interactor: Rhizoctonia solaniRhizoctonia solanie1pathogen
Outcome: yield loss or decrease in yield componentse0
Direction: Noe0

Not reportedComparator

Verbatim

e0
“No yield loss or decrease in yield components was observed when infection started at tillering or grain filling”
✓ located verbatim in the source · abstract, characters 1507–1618

e1
“Sheath blight (Rhizoctonia solani) of rice (Oryza sativa)”
✓ located verbatim in the source · abstract, characters 0–57

Title

Effect of Sheath Blight on Yield in Tropical, Intensive Rice Production System

R. M. Cu Plant Disease 1996. doi:10.1094/pd-80-1103

Other claims from this paper (8)

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Barley yield reductions under quackgrass were mainly attributed to a decrease of spike density (author interpretation).

Taxon: barleyHordeum vulgaree2
Outcome: yield reductionse1
Qualifier: a decrease of spike densitye1

Verbatim

e1
“These yield reductions were mainly attributed to a decrease of spike density”
✓ located verbatim in the source · abstract, characters 657–733

e2
“and barley (Hordeum vulgare L. 'Cadette')”
✓ located verbatim in the source · abstract, characters 237–278

Title

Effet du chiendent sur l'orge ensemencée à différents écartements entre les rangs et doses de semis

D. Pageau; G. F. Tremblay Canadian Journal of Plant Science 1995. doi:10.4141/cjps95-106

Other claims from this paper (7)

Intervention effect In the presence of quackgrass, barley yield at 100 seeds m-2 was reduced by 41%.
Intervention effect In the presence of quackgrass, barley yield at 500 seeds m-2 was reduced by 19%.
Intervention effect Quackgrass presence reduced the specific weight, number of kernels per spike and number of spikes per plant of barley.
Intervention effect Quackgrass presence reduced the 1000-kernel weight, harvest index and grain N concentration of barley.
Recommendation Increasing seeding rate, rather than narrowing row spacing, can be used to reduce interference between quackgrass and barley (author recommendation).
Intervention effect Narrow row spacings had no effect on barley yield with or without quackgrass.
Intervention effect Seeding rates influenced barley productivity and development when quackgrass was present.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The yield decrease from insect infestation was greater in Centennial than in the other genotype.

Taxon: SoybeanGlycine maxt0
Material: Centenniale1
Treatment: Insect infestatione1
Interactor: Pseudoplusia includensChrysodeixis includense0pest
Outcome: decrease in Centennial yielde1
Direction: greatere1

Not reportedComparator

Verbatim

t0
“Susceptibility of Selected Soybean Genotypes to Soybean Looper”
✓ located verbatim in the source · title, characters 27–89

e1
“Insect infestation significantly reduced yield of both genotypes, but the decrease in Centennial yield was greater”
✓ located verbatim in the source · abstract, characters 1283–1397

e0
“Pseudoplusia includens”
✓ located verbatim in the source · abstract, characters 410–432

Title

Influence of Irrigation on Susceptibility of Selected Soybean Genotypes to Soybean Looper

Lavone Lambert; Larry G. Heatherly Crop Science 1995. doi:10.2135/cropsci1995.0011183x003500060024x

Other claims from this paper (12)

Association Egg deposition did not differ significantly between the two soybean genotypes.
Association The effect of irrigation on egg deposition was not consistent.
Association Neither genotype nor irrigation significantly affected the number of larvae 2 weeks after insect release.
Intervention effect Larvae developing on nonirrigated plants of both genotypes were significantly smaller than those on irrigated plants.
Observation All surviving larvae on Centennial pupated.
Observation All larvae on D75‐10169 died by 18 days after the onset of oviposition.
Intervention effect Insect defoliation of irrigated plants was more than 50% greater than of nonirrigated plants.
Association Without insects, seed yields of the two genotypes were similar.
Intervention effect Without insects, seed yields were greater from irrigated than from nonirrigated plants.
Intervention effect Insect infestation significantly reduced soybean yield in both genotypes.
Intervention effect Yield reduction from insect infestation was greater for irrigated than for nonirrigated plants.
Recommendation Soybean under water deficit may allow a delay in initiating soybean looper control measures.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

The decrease in seed yield caused by SCN was smaller in clay soil.

Taxon: SoybeanGlycine maxt0
Outcome: decreasee5
Direction: lesse5
Qualifier: in the clay soile5

Verbatim

t0
“Soybean and Soybean Cyst Nematode”
✓ located verbatim in the source · title, characters 0–33

e5
“but the decrease was less in the clay soil”
✓ located verbatim in the source · abstract, characters 1170–1212

Title

Soybean and Soybean Cyst Nematode Response to Soil Water Content in Loam and Clay Soils

Larry G. Heatherly; Lawrence D. Young Crop Science 1991. doi:10.2135/cropsci1991.0011183x003100010043x

Other claims from this paper (8)

Intervention effect In wet silt loam, the number of cysts increased significantly with time.
Intervention effect In dry silt loam, the number of cysts stayed the same as the initial infestation.
Intervention effect In both wet and dry clay, the number of cysts declined significantly in all years of the study.
Intervention effect SCN infestation caused a reduction in soybean seed yields in both soils compared with noninfested controls.
Association Soil water content interacted with the level of SCN infestation to influence soybean yield.
Association Yield declines associated with SCN infestation were highly correlated with the number of seeds.
Observation SCN did not maintain populations in clay soil under greenhouse conditions.
Observation SCN did not produce the magnitude of yield decline typical of coarse-textured soil.

Associationobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Increasing nutsedge density was associated with a significant linear decrease in seed cotton yield

Taxon: cottonGossypium hirsutumt0
Treatment: Increasing nutsedge densitye0
Interactor: nutsedgee0weed
Outcome: seed cotton yielde0
Direction: decreasee0

Verbatim

t0
“yellow nutsedge (Cyperus esculentus) density on cotton (Gossypium hirsutum)”
✓ located verbatim in the source · title, characters 29–104

e0
“Increasing nutsedge density caused a significant linear decrease in seed cotton yield”
✓ located verbatim in the source · abstract, characters 230–315

Title

Effects of soil moisture and yellow nutsedge (Cyperus esculentus) density on cotton (Gossypium hirsutum)

Jody E. Moffett; William B. McCloskey Weed Science 1998. doi:10.1017/s0043174500090470

Other claims from this paper (9)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Leafhopper load up to 71.8 leafhopper-days per leaf did not decrease yield and fruit quality.

Taxon: Vitis viniferaVitis viniferae7
Treatment: leafhoppere1
Interactor: grape leafhopperEmpoasca vitise0pest
Outcome: yield and fruit qualitye1
Direction: No decreasee1

Not reportedComparator

Verbatim

e0
“The impact of the grape leafhopper”
✓ located verbatim in the source · abstract, characters 9–43

e7
“the grapevines, Vitis vinifera L.”
✓ located verbatim in the source · abstract, characters 148–181

e1
“No decrease in yield and fruit quality with leafhopper”
✓ located verbatim in the source · abstract, characters 1266–1320

Title

Grapevine leaf gas exchange, plant growth, yield, fruit quality and carbohydrate reserves influenced by the grape leafhopper, Empoasca vitis

M. P. Candolfi; M. Jermini; E. Carrera; et al. Entomologia Experimentalis et Applicata 1993. doi:10.1111/j.1570-7458.1993.tb01751.x

Other claims from this paper (9)

Intervention effect Photosynthesis and mesophyll conductance were severely reduced on main leaves showing leafhopper feeding symptoms.
Intervention effect Stomatal conductance of the red leaf section of infested main leaves was lower than on undamaged control leaves.
Intervention effect Transpiration rates of the red leaf section of infested main leaves were lower than on green parts of the same leaves and undamaged control leaves.
Intervention effect Gas exchange processes of lateral leaves were not affected by leafhopper feeding.
Association Leafhopper load on main leaves was correlated with visual damage symptoms.
Observation Up to 40% of the main leaf area of infested grapevines was discolored from the borders towards the center.
Observation Lateral leaves of grapevines showed no feeding symptoms.
Intervention effect Shoot diameter, pruning weight and carbohydrate reserves in the wood were not affected by leafhoppers.
Intervention effect Lateral leaf area growth of grapevines was significantly stimulated by leafhopper infestation.

“yield decrease”

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