Search claims · PlantClaims

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Potato yield was negatively related to preplant P. penetrans density, with r² 0.175.

Taxon: Solanum tuberosumSolanum tuberosumt0
Interactor: P. penetransPratylenchus penetranse0pathogen
Outcome: potato tuber yieldse1
Direction: decreaseinferrede0
Value: 0.175e0

Verbatim

e0
“P. penetrans (r(2) = 0.175)”
✓ located verbatim in the source · abstract, characters 1567–1594

t0
“Solanum tuberosum Tuber Yields”
✓ located verbatim in the source · title, characters 41–71

e1
“Two years of sweet clover or alfalfa followed by potato resulted in significantly increased potato tuber yields compared with 3 years of potato (P < 0.05).”
✓ located verbatim in the source · abstract, characters 638–793

Title

Impact of Multi-year Cropping Regimes on Solanum tuberosum Tuber Yields in the Presence of Pratylenchus penetrans and Verticillium dahliae.

J Chen; G W Bird; R L Mather PubMed 1995

Other claims from this paper (14)

Intervention effect The five cropping regimes did not differ in 1990 potato tuber yield.
Intervention effect One year of corn before two potato years did not differ in yield from continuous potato.
Intervention effect One year of sudax before two potato years did not differ in yield from continuous potato.
Intervention effect One year of sweet clover before two potato years did not differ in yield from continuous potato.
Intervention effect One year of alfalfa before two potato years did not differ in yield from continuous potato.
Intervention effect Two years of sweet clover increased subsequent potato tuber yield.
Intervention effect Two years of alfalfa increased subsequent potato tuber yield.
Intervention effect Two-year legume rotations lowered P. penetrans density relative to continuous potato.
Intervention effect Two-year grain rotations lowered P. penetrans density relative to continuous potato.
Observation Sudax-sudax-potato had the lowest tuber yield with preplant V. dahliae at 34 cfu/g soil.
Observation Corn-corn-potato had the second lowest tuber yield with preplant P. penetrans at 54/100 cm(3) soil.
Association Potato yield was negatively related to preplant V. dahliae density, with r² 0.237.
Association Potato yield was negatively related to combined pathogen density, with r² 0.380.
Method / resource A regression model encompassing ten regimes explained potato yields with r² 0.915.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Grain yield losses were 0 to 24% when plants were damaged at the V3 stage, depending on hybrid, damage level and year.

Taxon: cornZea mays subsp. mayse0
Treatment: damaged at the V3e5
Outcome: grain yield lossese5
Direction: decreaseinferrede5
Value: 0 to 24%e5
Qualifier: depending on hybrid, damage level, and yeare5

Not reportedComparator

Verbatim

e0
“Plants were damaged at the V3 and V5 stages of corn development”
✓ located verbatim in the source · abstract, characters 161–224

e5
“Grain yield losses, averaged across plant density, varied from 0 to 24% and 0 to 81% when plants were damaged at the V3 and V5 stages of com development respectively, depending on hybrid, damage level, and year”
✓ located verbatim in the source · abstract, characters 740–950

Title

Yield Responses of Corn to Simulated Black Cutworm (Lepidoptera: Noctuidae) Damage

Luisa Santos; Elson J. Shields Journal of Economic Entomology 1998. doi:10.1093/jee/91.3.748

Other claims from this paper (10)

Association Hybrid had a significant effect on grain yield in both years.
Association Hybrid had no significant effect on silage yield in both years.
Association Plant density had no significant effect on grain and silage whole-crop yields.
Association A significant year effect was detected on both grain and silage yield.
Association Significant linear and quadratic relationships were detected between grain and silage yields and damage level.
Intervention effect Grain yield losses were 0 to 81% when plants were damaged at the V5 stage.
Association For P3733, maximum grain loss exceeded silage loss by 9% in 1993.
Association For P3733, maximum grain loss exceeded silage loss by 14% in 1994.
Association For P3921, grain losses paralleled silage losses in both years.
Association A phenological delay was associated with the simulated damage.

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

In 1994, Fluazinam and Topsin M significantly increased marketable lettuce yield compared with no treatment.

Taxon: lettuceLactuca sativae0
Treatment: Fluazinam and Topsin Me1
Interactor: Sclerotinia minorSclerotinia minore1pathogen
Second interactor: S. sclerotiorumSclerotinia sclerotiorume1pathogen
Outcome: marketable yielde1
Direction: increasee1
Comparator: no treatmente1

Verbatim

e0
“Leaf drop of lettuce is caused by the plant pathogenic fungi Sclerotinia minor and S. sclerotiorum”
✓ located verbatim in the source · abstract, characters 0–98

e1
“In the 1994 trial, Fluazinam and Topsin M provided significant decrease of disease and significant increase inmarketable yield compared to no treatment in plots infested with Sclerotinia minor or S. sclerotiorum.”
✓ located verbatim in the source · abstract, characters 269–481

Title

Field Evaluation of Potential New Fungicides for Control of Sclerotinia Leaf Drop of Lettuce in 1994 and 1995

Michael E. Matheron; I. J. Misaghi; Martin Porchas; et al. UA Campus Repository (The University of Arizona) 1995

Other claims from this paper (5)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

In fall, total fruit yield and extra-large fruit production decreased with increasing transplant N fertilization, the opposite of the spring trend.

Taxon: tomatoSolanum lycopersicume0
Treatment: increasing transplant N fertilizatione3
Outcome: total fruit yield and production of extra-large fruite3
Direction: decreaseinferrede3
Setting: falle3

Not reportedComparator

Verbatim

e0
“Fall-grown tomato ( Lycopersicon esculentum Mill.) transplants were larger than spring-grown transplants when fertilized in the greenhouse”
✓ located verbatim in the source · abstract, characters 0–138

e3
“In the spring, total fruit yield and production of extra-large fruit increased with increasing transplant N fertilization, but the opposite trend occurred in the fall”
✓ located verbatim in the source · abstract, characters 596–762

Title

Nitrogen Fertilization of Florida-grown Tomato Transplants: Seasonal Variation in Greenhouse and Field Performance

C.S. Vavrina; G.J. Hochmuth; J.A. Cornell; et al. HortScience 1998. doi:10.21273/hortsci.33.2.0251

Other claims from this paper (5)

Intervention effect Transplant growth characteristics increased linearly with increasing N in both seasons.
Intervention effect Stem length, leaf area and root:shoot ratio in the fall responded quadratically to increasing N.
Intervention effect The ratio of shoot dry weight to leaf area in the fall responded quadratically to increasing N.
Intervention effect In spring, total fruit yield and extra-large fruit production increased with increasing transplant N fertilization.
Recommendation Seasonal differences in tomato transplant growth must be addressed by modifying N fertilization between spring and fall.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Soil Mn, Zn and Cu availability decreased to day 30, increased to day 40, then decreased with higher N application.

Taxon: RiceOryza sativat0
Outcome: Mn, Zn and Cu in soile0
Direction: decreasede0
Qualifier: increased up to 40 days followed by a decrease thereafter with the increase in rate of N applicatione0

Verbatim

t0
“Rice”
✓ located verbatim in the source · title, characters 103–107

e0
“Availability of Ca, Mg, Fe, Mn, Zn and Cu in soil decreased up to 30 days after transplanting, increased up to 40 days followed by a decrease thereafter with the increase in rate of N application.”
✓ located verbatim in the source · abstract, characters 402–598

Title

Effect of Optimal and Suboptimal Nutrient Management on Nutrient Changes, Yield and Nutrient Uptake by Rice in Submerged Soil

Neeta Pande; R. N. Samantaray; P. Mahapatra; et al. Journal of the Indian Society of Soil Science 1993

Other claims from this paper (11)

Observation Soil pH increased up to 40 days after rice transplanting.
Observation Soil Eh decreased after transplanting.
Observation Soil salinity and available NH4-N and K declined as submergence progressed.
Observation Soil Ca, Mg and Fe availability decreased to day 30, increased to day 40, then decreased with higher N application.
Observation Soil solution pH increased to day 40, decreased to day 50, and then increased with submergence.
Observation Soil solution salinity and nutrient concentration decreased as the rice crop grew and submergence progressed.
Intervention effect Fertilizer application decreased soil Eh more than the control.
Observation N application influenced soil nutrient availability and salinity dynamics, while patterns of change were similar among treatments.
Intervention effect Applying N with P and K significantly increased rice grain yield.
Association Rice nutrient uptake rose with fertilizer application.
Association Rice nutrient uptake rose as crop growth progressed.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Regression showed that only R. padi feeding caused a significant yield loss of spring wheat, and only during the boot stage.

Taxon: Triticum aestivumTriticum aestivume0
Organ / stage: boot stagee4
Treatment: feeding by R. padie4
Interactor: R. padiRhopalosiphum padie4pest
Outcome: yield losse4
Direction: decreaseinferrede4

Not reportedComparator

Verbatim

e0
“Populations of the English grain aphid, Sitobion avenae (F.), and the bird cherryoat aphid, Rhopalosiphum padi (L.), develop in some years on maturing wheat, Triticum aestivum (L.)”
✓ located verbatim in the source · abstract, characters 0–180

e4
“Regression analysis of data from the 2nd experiment showed that only feeding by R. padi caused significant yield loss and only during the boot stage”
✓ located verbatim in the source · abstract, characters 1198–1346

Title

Yield Losses in Maturing Spring Wheat Caused by Cereal Aphids (Homoptera: Aphididae) under Laboratory Conditions

Todd S. Voss; Robert W. Kieckhefer; Billy W. Fuller; et al. Journal of Economic Entomology 1997. doi:10.1093/jee/90.5.1346

Other claims from this paper (8)

Intervention effect R. padi feeding at 600 aphid-days at the boot stage caused a 19% grain yield loss.
Intervention effect R. padi feeding at 1,200 aphid-days at the boot stage caused a 31% grain yield loss.
Intervention effect Aphid feeding at 300 aphid-days during the anthesis stage caused a 14% yield loss in spring wheat.
Intervention effect Aphid feeding at 600 aphid-days during the anthesis stage caused a 15% yield loss in spring wheat.
Intervention effect Aphid feeding at 1,200 aphid-days during the anthesis stage caused a 20% yield loss in spring wheat.
Intervention effect Sitobion avenae feeding caused a significant yield loss only during the boot stage of spring wheat.
Association Reduced spikelet number per head during the boot stage was a principal component of cereal aphid yield loss in wheat.
Association Reduced average seed weight during later growth stages was a principal component of cereal aphid yield loss in wheat.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Ratoon stunting disease reduced sugar yield in sugarcane by 2,67 to 7,369 kg/ha over 3-year plantings.

Taxon: Sugarcanet0
Treatment: ratoon stunting diseasee1
Outcome: sugar lossese3
Direction: decreaseinferrede3
Value: 2,67 to 7,369 kg/hae3

Not reportedComparator

Verbatim

t0
“Effect of Ratoon Stunting Disease on Yield of Sugarcane Grown in Multiple Three-Year Plantings”
✓ located verbatim in the source · title, characters 0–94

e1
“Yield losses in sugarcane caused by ratoon stunting disease were observed for seven of eight cultivars tested in four to six crop cycles of 3-yr plantings”
✓ located verbatim in the source · abstract, characters 0–154

e3
“sugar losses ranged from 2,67 to 7,369 kg/ha”
✓ located verbatim in the source · abstract, characters 227–271

Title

Effect of Ratoon Stunting Disease on Yield of Sugarcane Grown in Multiple Three-Year Plantings

Michael P. Grisham Phytopathology 1991. doi:10.1094/phyto-81-337

Other claims from this paper (6)

Associationobservedoriginal resultmeasured

Claim · model-written summary

Maize competitiveness increased with increasing N level.

Taxon: maizeZea mayse6
Treatment: increasing N levele6
Outcome: maize competitivenesse6
Direction: increasede6

Verbatim

e6
“Competitiveness of either maize or beans increased with decrease in crop proportions and maize competitiveness increased with increasing N level”
✓ located verbatim in the source · abstract, characters 1130–1274

Title

The effect of mixture proportions and fertilizer nitrogen onmorphology, insect pest damage, competition and yield advantages in amaize/bean intercrop

TSpace 1996

Other claims from this paper (10)

Intervention effect Intercropping reduced the incidence of Japanese beetles and Mexican bean beetles compared with sole beans.
Association Both bean beetles decreased as the bean proportion in the mixtures decreased.
Intervention effect Sole maize tasseled and matured earlier than intercropped maize in both years.
Intervention effect Nitrogen application resulted in earlier tasseling of maize.
Intervention effect Vegetative growth of beans was greater at higher nitrogen rates.
Intervention effect Maturity of beans was delayed at higher nitrogen rates.
Association Competitiveness of maize or beans increased as crop proportions decreased.
Intervention effect Land Equivalent Ratios were greater for maize/bean intercropping than for sole cropping in both years.
Intervention effect Land Equivalent Ratios were higher without nitrogen application in maize/bean intercropping.
Mechanism Higher LERs without nitrogen suggest better utilisation of soil nutrients by maize/bean intercrops.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Fruit number of tomato was not reduced by salinity.

Taxon: tomatoSolanum lycopersicumt0
Outcome: fruit numbere2

Verbatim

t0
“single-truss tomato grown in hydroponics”
✓ located verbatim in the source · title, characters 67–107

e2
“The reduction in fruit yield was due to a decrease in fruit weight but not in fruit number”
✓ located verbatim in the source · abstract, characters 476–566

Title

Effects of salinity at two ripening stages on the fruit quality of single-truss tomato grown in hydroponics

Y. Sakamoto; S. Watanabe; T. Nakashima; et al. The Journal of Horticultural Science and Biotechnology 1999. doi:10.1080/14620316.1999.11511174

Other claims from this paper (10)

Intervention effect Salinity at the immature green stage improved tomato fruit quality more than salinity at the decolouring stage.
Intervention effect Salinity at the immature green stage decreased tomato fruit yield more than salinity at the decolouring stage.
Mechanism The reduction in tomato fruit yield was attributed to a decrease in fruit weight.
Intervention effect Salinity increased the concentrations of soluble solids, citrate and ascorbic acid in tomato fruit.
Intervention effect Salinity increased the K concentration in tomato fruit.
Intervention effect Salinity increased chlorophyll a and chlorophyll b concentrations in tomato fruit.
Intervention effect Salinity increased lycopene and carotene concentrations in tomato fruit.
Intervention effect Salinity decreased or did not affect the absolute amount of these constituents per tomato fruit.
Mechanism Authors suggest that the salinity-induced improvement in tomato fruit quality is caused by reduced water import into the fruit.
Intervention effect Salinity applied at the earlier development stage was significantly more effective for tomato.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

The nitrogen-linked allocation shift increased harvest index by 27%.

Outcome: harvest indexe0
Direction: increasese0
Value: 27%e0

Not reportedTaxon

Verbatim

e0
“This alteration resulted in increases in grain yield (64%) and harvest index (27%), and a decrease in the concentration of total non-structural carbohydrate (TNC) (16%).”
✓ located verbatim in the source · abstract, characters 1606–1775

t0
“maize”
✓ located verbatim in the source · title, characters 85–90

Title

Nitrogen and genotype effects on assimilate partitioning and resistance to Striga in maize

L. M. Mumera IDEALS (University of Illinois Urbana-Champaign) 1992

Other claims from this paper (14)

Intervention effect Striga infection generally decreased as nitrogen availability rose, depending on infestation severity.
Intervention effect All nitrogen rates reduced Striga infection in 1990.
Intervention effect Only 90 kg N reduced Striga infection in 1989.
Intervention effect At high parasite intensity in 1989, urea alone reduced Striga by 26%.
Intervention effect In 1990 all nitrogen sources significantly reduced Striga infection by 30%.
Intervention effect Nitrogen applied at 28 DAP yielded the least Striga infection in both years.
Intervention effect Nitrogen did not change assimilate partitioning during vegetative growth.
Intervention effect During reproductive growth, nitrogen favored assimilate allocation to the ear over vegetation.
Observation The nitrogen-linked allocation shift increased maize grain yield by 64%.
Observation The allocation shift decreased total non-structural carbohydrate concentration by 16%.
Observation Maize genotypes showed up to threefold variation in Striga resistance.
Association Earlier-maturing maize genotypes were generally more resistant to Striga.
Association Stalk carbohydrate concentration correlated significantly with seasonal Striga density.
Recommendation The authors recommend judicious nitrogen fertilizer and resistant genotypes for integrated Striga control.

“yield decrease”

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