Search claims · PlantClaims

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Increasing nitrogen raised yield more under no-tillage.

Taxon: cornZea mays subsp. mayst0
Treatment: increased nitrogene0
Outcome: yielde0
Direction: increasee0
Comparator: conventional tillagee0

Verbatim

e0
“a greater decrease (P<.01) in weed control and soil pH and a greater increase in yield with increased nitrogen under no-tillage than with conventional tillage.”
✓ located verbatim in the source · abstract, characters 1123–1282

t0
“corn”
✓ located after whitespace/quote normalisation · title, characters 56–60

Title

Effect of pH, Nitrogen, and Tillage on Weed Control and Corn (Zea mays) Yield

J. J. Kells; R. L. Blevins; C. E. Rieck; et al. Weed Science 1980. doi:10.1017/s0043174500061592

Other claims from this paper (11)

Association Increased soil pH significantly improved weed control with simazine.
Association Soil pH affected weed control more under no-tillage than conventional tillage.
Intervention effect Conventional tillage increased weed control over no-tillage.
Intervention effect Conventional tillage increased yield over no-tillage.
Intervention effect Conventional tillage increased soil pH over no-tillage.
Intervention effect Lime increased weed control from 63% to 83%.
Intervention effect Lime increased yield from 5,290 to 5,930 kg/ha.
Intervention effect Lime increased soil pH from 5.22 to 5.91.
Observation No-tillage unlimed plots had the poorest weed control.
Association Increasing nitrogen decreased weed control more under no-tillage.
Association Increasing nitrogen decreased soil pH more under no-tillage.

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Asparagus yield in 1972 regressed significantly on 1971 rust severity, with r = −0.87.

Taxon: asparagusAsparagust0
Interactor: ruste0pathogen
Outcome: 1972 yieldse0
Direction: decreaseinferrede0
Value: r = −0.87**e0
Qualifier: 1971 rust severitye0

Verbatim

e0
“A significant regression of 1972 yields on 1971 rust severity was indicated (r = −0.87**).”
✓ located verbatim in the source · abstract, characters 431–521

t0
“asparagus”
✓ located after whitespace/quote normalisation · title, characters 37–46

Title

FACTORS AFFECTING YIELD AND VIGOR IN ASPARAGUS CULTIVARS IN SOUTHWESTERN ONTARIO

V. A. DIRKS; V. W. NUTTALL Canadian Journal of Plant Science 1982. doi:10.4141/cjps82-109

Other claims from this paper (6)

Observation Asparagus cultivars varied widely in yield response to cutting period and season.
Mechanism Differential seasonal yield response was partly attributed to rust injury.
Observation Waltham Washington yielded as well as the best experimental lines.
Observation Average yield did not differ by harvest length.
Observation Specific asparagus cultivars had optimum cutting periods.
Recommendation The authors call for further asparagus cultivar improvement for economic and market potential in Ontario.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Fe application at 50 ppm decreased dry matter yield, Fe contents and uptake

Taxon: riceOryza sativae0
Treatment: 50 ppme5
Outcome: dry matter yield, its contents and uptakee5
Direction: decreasee5
Setting: pot experimente0

Not reportedComparator

Verbatim

e0
“The effect of addition of phosphorus on dry matter yield and iron nutrition of rice (variety IR-8) at two moisture regimes, i e., field capacity and waterlogging and also on the transformation of native and applied iron was studied in a pot experiment”
✓ located verbatim in the source · abstract, characters 0–251

e5
“Application of Fe up to 25 ppm significantly changed the dry matter yield, its contents and uptake and at 50 ppm there was a decrease in these values”
✓ located verbatim in the source · abstract, characters 611–760

Title

Effect of Phosphorus Application on the Transformation of Iron in Soil and Iron Nutrition of Rice under Two Soil Moisture Regimes

Ramwant Gupta; Room Singh; Neerja Gupta; et al. Journal of the Indian Society of Soil Science 1982

Other claims from this paper (9)

Intervention effect Phosphate addition decreased available and reducible Fe in soil under pot conditions
Intervention effect Phosphate addition had no effect on exchangeable Fe
Association Available Fe contents decreased with time
Association Reducible Fe contents increased with time
Association Exchangeable Fe contents did not change with time
Intervention effect Moisture regimes enhanced the contents of all forms of Fe, more strongly under waterlogging
Intervention effect Waterlogged condition gave significantly higher dry matter yield and Fe uptake than field capacity
Intervention effect Fe application up to 25 ppm significantly changed dry matter yield, Fe contents and uptake
Association Fe, phosphorus and moisture interactions significantly influenced dry matter yield, Fe content and Fe uptake

Associationobservedoriginal resultmeasured

Claim · model-written summary

Selection for cold tolerance was associated with a correlated decrease in grain moisture of 0.3% per cycle.

Taxon: Zea maysZea mayse0
Treatment: Selectione1
Outcome: grain moisturee1
Direction: decreaseinferrede1
Value: ‐0.3% cycle ‐1e1

Verbatim

t0
“in Two Maize Populations”
✓ located verbatim in the source · title, characters 91–115

e0
“improved cold tolerant maize ( Zea mays L.) germplasm”
✓ located verbatim in the source · abstract, characters 117–170

e1
“Selection was associated with correlated genetic changes (2Δ p α) grain yield [0.22 Mg ha ‐1 cycle ‐1 when averaged over both BS13(SCT) and BSSS2(SCT)], grain moisture (‐0.3% cycle ‐1 ), early stand count (0.7 plants plot ‐1 cycle ‐1 ), and final stand (387.4 plants ha ‐1 cycle ‐1 )”
✓ located verbatim in the source · abstract, characters 541–824

Title

K. G. Hoard; T. M. Crosbie Crop Science 1986. doi:10.2135/cropsci1986.0011183x002600030017x

Other claims from this paper (11)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Higher sicklepod populations frequently reduced green lima bean yield.

Taxon: Phaseolus lunatusPhaseolus lunatuse0
Treatment: higher populationse3
Outcome: yieldse3
Direction: decreaseinferrede3
Qualifier: frequentlye3

Verbatim

e0
“Phaseolus lunatus L.”
✓ located verbatim in the source · abstract, characters 168–188

e3
“In general, weed densities at 2.7 to 10.8 sicklepod/m 2 did not significantly reduce yields, but higher populations frequently did”
✓ located verbatim in the source · abstract, characters 298–428

Title

Competitive Effects of Sicklepod on Lima Beans

Norman C. Glaze; Ben G. Mullinix Weed Science 1984. doi:10.1017/s0043174500058392

Other claims from this paper (3)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Radish showed no visible foliar injury alongside the absence of root yield reduction.

Taxon: radishRaphanus sativuse0
Outcome: absence of visible foliar injurye0

Verbatim

e0
“The absence of a decrease in root yields in radish was coincident with an absence of visible foliar injury.”
✓ located verbatim in the source · abstract, characters 915–1022

Title

EFFECTS OF SIMULATED ACIDIC RAIN ON YIELDS OF FIELD‐GROWN CROPS

LANCE S. EVANS; KEITH F. LEWIN; ELIZABETH A. CUNNINGHAM; et al. New Phytologist 1982. doi:10.1111/j.1469-8137.1982.tb03322.x

Other claims from this paper (7)

Intervention effect Radish root mass was not significantly affected by simulated acidic rainfall.
Intervention effect Beet yield fell significantly under simulated rain at pH 4.0, 3.1 and 2.7 relative to ambient rainfall and pH 5.7 rain.
Observation Beet root yields at pH 5.7, 4.0, 3.1 and 2.7 were respectively 110, 79, 84 and 86% of ambient-rainfall-only yields.
Mechanism Beet foliar injury was attributed to acidic simulated and ambient rain.
Observation Under agronomic conditions, visible foliar injury occurred from ambient rain or simulated rain above pH 3.1.
Intervention effect Kidney bean seed number, seed mass and pod number did not differ significantly among treatments.
Intervention effect Alfalfa hay fresh and dry mass did not differ significantly among treatments.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Dry matter yield increased during growth within treatments.

Taxon: ryegrass/clover pasturee1
Outcome: dry matter (DM) yielde0
Direction: increasinge0

Verbatim

e0
“Within each treatment, increasing dry matter (DM) yield was accompanied by a decrease in digestibility and crude protein content of the sward during the growth period.”
✓ located verbatim in the source · abstract, characters 444–611

e1
“The growth of ryegrass/clover pasture”
✓ located verbatim in the source · abstract, characters 9–46

Title

Factors influencing the yield and feeding value of pasture grown for conservation

J. A. Browse; R. M. Haslemore; R. Thaine New Zealand Journal of Crop and Horticultural Science 1984. doi:10.1080/03015521.1984.10427782

Other claims from this paper (16)

Association Digestibility declined as dry matter yield increased.
Association Crude protein content declined as dry matter yield increased.
Intervention effect Treatment 2 did not significantly lower DM production relative to Treatment 1.
Intervention effect Treatment 2 produced more stem material than Treatment 1.
Intervention effect Treatment 2 digestibility was 3–12 percentage units lower than Treatment 1.
Intervention effect Treatment 2 reduced digestible dry matter yield by 15–40% relative to Treatment 1 at equal digestibility.
Observation At 70% digestibility, Treatment 2 yielded 4.8 t DM/ha per year.
Observation At 70% digestibility, Treatment 1 yielded 6.3 t DM/ha per year.
Intervention effect Treatment 3 produced a more vegetative sward than Treatments 1 and 2.
Intervention effect Treatment 3 lowered DM production relative to Treatments 1 and 2.
Intervention effect Treatment 3 lowered DDM production relative to Treatments 1 and 2.
Intervention effect Treatment 3 and Treatment 1 had similar digestibility for most of 1980–81.
Observation Late flowering Cynosurus in Treatment 3 increased early stem material in 1981–82.
Observation Digestibility was reduced in the 1981–82 Treatment 3 sward.
Observation After about 40 days, floral development completion in Treatment 3 prevented further digestibility decline.
Recommendation Early closing and cutting are recommended for high-quality conserved crops.

Intervention effectobservedreview summarypositivebasis n/a

Claim · model-written summary

Soil boron application increased maize kernel yield in some genotypes.

Taxon: maizeZea mayst0
Treatment: soil application of borone0
Outcome: kernel yielde0
Direction: increasee0
Qualifier: some genotypese0

Not reportedComparator

Verbatim

e0
“soil application of boron can, in some genotypes, increase the total length of the ear, increase the portion covered with fully developed kernels, decrease (but not eliminate) the apical barren section, and increase kernel yield”
✓ located verbatim in the source · abstract, characters 778–1006

t0
“grain yield in maize”
✓ located verbatim in the source · abstract, characters 37–57

Title

Interactions

A. Mozafar Journal of Plant Nutrition 1987. doi:10.1080/01904168709363684

Other claims from this paper (4)

Observation Maize genotypes differed in susceptibility to barrenness under similar growth conditions.
Intervention effect Soil boron application increased maize ear length in some genotypes at 100,000 plants/ha.
Intervention effect Soil boron application increased the portion of maize ears with fully developed kernels in some genotypes at 100,000 plants/ha.
Intervention effect Soil boron application decreased but did not eliminate apical barren sections of maize ears.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Tiller removal decreased spike number in barley in two experiments.

Taxon: BarleyHordeum vulgaree0
Treatment: tiller removale3
Outcome: spike numbere3
Direction: decreasee3
Qualifier: in two experimentse3

Not reportedComparator

Verbatim

e0
“Barley ( Hordeum vulgare L.) plants normally produce tillers”
✓ located verbatim in the source · abstract, characters 0–60

e3
“However, in two experiments the decrease in spike number resulting from tiller removal was partly offset by an increase in the grain yield of main shoots for both watering regimes”
✓ located verbatim in the source · abstract, characters 620–799

Title

Effects of Tiller Removal on Spring Barley

Ali Chafai El Alaoui; Steve R. Simmons; R. Kent Crookston Crop Science 1988. doi:10.2135/cropsci1988.0011183x002800020025x

Other claims from this paper (7)

Intervention effect Tiller removal tended to reduce grain yield per unit area in barley.
Intervention effect Tiller removal increased grain yield of main shoots in barley, partly offsetting the spike loss.
Intervention effect Detillering enhanced kernel number per spike and mass per kernel of main shoots in barley.
Intervention effect Main shoots of barley initiated more spikelet primordia per spike when tillers were removed.
Intervention effect Tiller removal caused only a small reduction in water evapotranspired by barley.
Mechanism Tillers compete with the main shoot early in its development, reducing its inherent productivity in barley.
Recommendation Genotypes of barley that produce relatively few tillers may be preferred for main shoot productivity.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The high paclobutrazol rate decreased fruit soluble solids.

Taxon: ‘Delicious’ Applest0
Treatment: high rate of PBe0
Outcome: fruit soluble solidse0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“A decrease in terminal growth, leaf size, fruit L/D ratio, fruit size, pedicel length, and fruit soluble solids were also observed with the high rate of PB.”
✓ located verbatim in the source · abstract, characters 280–436

t0
“‘Delicious’ Apples”
✓ located verbatim in the source · title, characters 94–112

Title

Effect of Paclobutrazol and Analogs on Growth, Yield, Fruit Quality, and Storage Potential of ‘Delicious’ Apples

Duane W. Greene Journal of the American Society for Horticultural Science 1986. doi:10.21273/jashs.111.3.328

Other claims from this paper (19)

Intervention effect Paclobutrazol increased apple flesh firmness at harvest.
Intervention effect Paclobutrazol reduced seed number at harvest.
Intervention effect Paclobutrazol reduced fruit size at harvest.
Intervention effect Flowering was unaffected the following year.
Intervention effect Fruit set increased the following year.
Intervention effect The high paclobutrazol rate decreased terminal growth.
Intervention effect The high paclobutrazol rate decreased leaf size.
Intervention effect The high paclobutrazol rate decreased fruit L/D ratio.
Intervention effect The high paclobutrazol rate decreased fruit size.
Intervention effect The high paclobutrazol rate decreased pedicel length.
Intervention effect Paclobutrazol increased fruit flesh calcium.
Intervention effect Paclobutrazol increased total yield.
Intervention effect Paclobutrazol retarded fruit ripening.
Intervention effect Dichlorobutrazol did not change final terminal growth.
Intervention effect Dichlorobutrazol reduced L/D ratio in the following year.
Intervention effect Dichlorobutrazol reduced pedicel length in the following year.
Intervention effect Dichlorobutrazol reduced fruit size in the following year.
Intervention effect Paclobutrazol treated fruit retained flesh firmness after storage.
Intervention effect Paclobutrazol dramatically reduced senescent breakdown after storage.

“yield decrease”

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