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“yield decrease”

1,236 matches

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plus 252 non-evaluative

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plus 31 earlier · 1910s–1940s

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Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Marketable fruit weight was significantly greater with Treatment 3 than with Treatment 1.

Taxon: PEPPERSCapsicumt0
Treatment: Treatment 3e2
Outcome: Marketable fruit weighte2
Direction: significantly greatere2
Comparator: Treatment 1e2

Verbatim

t0
“PEPPERS GROWN IN ROCKWOOL”
✓ located verbatim in the source · title, characters 69–94

e2
“Marketable fruit weight was significantly greater for plants in Treatment 3 compared to Treatment 1”
✓ located verbatim in the source · abstract, characters 681–780

Title

NITROGEN CONCENTRATIONS TO MAXIMIZE YIELD AND DECREASE LEACHATE-N IN PEPPERS GROWN IN ROCKWOOL.

M.K. Schon; M.S. Compton; I. Burns; et al. HortScience 1993. doi:10.21273/hortsci.28.5.507a

Other claims from this paper (6)

Intervention effect Increasing N did not affect the number of marketable pepper fruit in Trial 1.
Intervention effect Increasing N increased the size of pepper fruit in Trial 1.
Intervention effect Marketable yield did not differ significantly between 120 ppm N and 175 ppm N.
Intervention effect Nitrogen level did not affect blossom end rot occurrence in peppers.
Association Higher N concentration was associated with a higher occurrence of blossom end rot in early Trial 2 results.
Recommendation The authors recommend 120 ppm N to maximize yield and reduce environmental impact of greenhouse pepper production in Florida.

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Both bean beetles decreased as the bean proportion in the mixtures decreased.

Taxon: beane2
Treatment: bean proportion in the mixturese2
Interactor: bean beetlese2pest
Outcome: bean beetlese2
Direction: decreasede2

Verbatim

e2
“Both bean beetles decreased with decrease in bean proportion in the mixtures”
✓ located verbatim in the source · abstract, characters 828–904

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.
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.
Association Maize competitiveness increased with increasing N level.
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.

Intervention effectobservedreview summarypositivebasis n/a

Claim · model-written summary

Their use eliminated the need for nitrogenous fertilizers in agricultural production.

Taxon: many agricultural productse3
Treatment: Their usee3
Outcome: need for nitrogenous fertilizerse3
Direction: decreaseinferrede3

Not reportedComparator

Verbatim

t0
“Azotobacter and Azospirillum as potential nitrogen fertilizers”
✓ located verbatim in the source · title, characters 0–62

e3
“Their use substantially increases the yield in many agricultural products and eliminates the need for nitrogenous fertilizers”
✓ located verbatim in the source · abstract, characters 389–514

Title

Azotobacter and Azospirillum as potential nitrogen fertilizers

A. Martín; M. Moreno; P. Marín Communications in Soil Science and Plant Analysis 1993. doi:10.1080/00103629309368796

Other claims from this paper (4)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen increased gross return.

Treatment: nitrogen applicationse0
Outcome: gross returne0
Direction: increasee0

Not reportedTaxonComparator

Verbatim

e0
“The nitrogen applications resulted in an increase of yield, gross return, total alkaloids and total nitrogen and a decrease of quality index, maturity index, reducing sugars and ratio of reducing sugars:total alkaloids”
✓ located verbatim in the source · abstract, characters 123–341

Title

Influence de la fertilisation azotée sur la production du tabac à cigarette au Québec

Michel Lamarre; Suzanne Payette Canadian Journal of Plant Science 1992. doi:10.4141/cjps92-046

Other claims from this paper (8)

Intervention effect Nitrogen increased tobacco yield.
Intervention effect Nitrogen increased total alkaloids.
Intervention effect Nitrogen increased total nitrogen.
Intervention effect Nitrogen decreased the quality index.
Intervention effect Nitrogen decreased the maturity index.
Intervention effect Nitrogen decreased reducing sugars.
Intervention effect Nitrogen decreased the ratio of reducing sugars to total alkaloids.
Recommendation The authors recommend 30–45 kg ha −1 nitrogen, conditional on soil type and cultivar, for acceptable tobacco traits.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Nitrogen increased total alkaloids.

Treatment: nitrogen applicationse0
Outcome: total alkaloidse0
Direction: increasee0

Not reportedTaxonComparator

Verbatim

e0
“The nitrogen applications resulted in an increase of yield, gross return, total alkaloids and total nitrogen and a decrease of quality index, maturity index, reducing sugars and ratio of reducing sugars:total alkaloids”
✓ located verbatim in the source · abstract, characters 123–341

Title

Influence de la fertilisation azotée sur la production du tabac à cigarette au Québec

Michel Lamarre; Suzanne Payette Canadian Journal of Plant Science 1992. doi:10.4141/cjps92-046

Other claims from this paper (8)

Intervention effect Nitrogen increased tobacco yield.
Intervention effect Nitrogen increased gross return.
Intervention effect Nitrogen increased total nitrogen.
Intervention effect Nitrogen decreased the quality index.
Intervention effect Nitrogen decreased the maturity index.
Intervention effect Nitrogen decreased reducing sugars.
Intervention effect Nitrogen decreased the ratio of reducing sugars to total alkaloids.
Recommendation The authors recommend 30–45 kg ha −1 nitrogen, conditional on soil type and cultivar, for acceptable tobacco traits.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Nitrogen increased total nitrogen.

Treatment: nitrogen applicationse0
Outcome: total nitrogene0
Direction: increasee0

Not reportedTaxonComparator

Verbatim

e0
“The nitrogen applications resulted in an increase of yield, gross return, total alkaloids and total nitrogen and a decrease of quality index, maturity index, reducing sugars and ratio of reducing sugars:total alkaloids”
✓ located verbatim in the source · abstract, characters 123–341

Title

Influence de la fertilisation azotée sur la production du tabac à cigarette au Québec

Michel Lamarre; Suzanne Payette Canadian Journal of Plant Science 1992. doi:10.4141/cjps92-046

Other claims from this paper (8)

Intervention effect Nitrogen increased tobacco yield.
Intervention effect Nitrogen increased gross return.
Intervention effect Nitrogen increased total alkaloids.
Intervention effect Nitrogen decreased the quality index.
Intervention effect Nitrogen decreased the maturity index.
Intervention effect Nitrogen decreased reducing sugars.
Intervention effect Nitrogen decreased the ratio of reducing sugars to total alkaloids.
Recommendation The authors recommend 30–45 kg ha −1 nitrogen, conditional on soil type and cultivar, for acceptable tobacco traits.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Higher inoculum increased shoot sodium and potassium.

Organ / stage: shoote0 e1
Treatment: increase in inoculum levele0 e1
Outcome: sodium and potassiume0 e1
Direction: increasede0 e1

Not reportedTaxonComparator

Verbatim

e0
“sodium and potassium which increased in shoot”
✓ located verbatim in the source · abstract, characters 642–687

e1
“With the increase in inoculum level there was corresponding decrease in fresh and dry plant weight”
✓ located verbatim in the source · abstract, characters 374–472

Title

THE INFLUENCE OF MELOIDOGYNE INCOGNITA ON GROWTH, PHYSIOLOGY, NUTRIENT CONCENTRATION AND ALKALOID YIELD OF HYOSCY AMUS NIGER

Akhtar Haseeb; N. K. Srivastava; Renu Pandey Nematologia mediterranea 1990

Other claims from this paper (7)

Intervention effect Higher inoculum reduced fresh and dry plant weight.
Intervention effect Higher inoculum reduced total alkaloid yield.
Intervention effect Higher inoculum reduced chlorophyll content and photosynthetic rate.
Intervention effect Higher inoculum reduced root and shoot iron, manganese, copper and zinc concentrations.
Intervention effect Higher inoculum reduced root sodium and potassium.
Intervention effect Highest inoculum caused the greatest percentage reductions in measured traits.
Observation Nematode reproduction rate peaked at an initial population of 50 second stage juveniles.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Rye winter cover cropping had no significant effect on residual soil nitrogen.

Taxon: cornZea mays subsp. mayst0
Treatment: rye as a winter cover crope0
Outcome: residual soil N contente0
Direction: no significant effecte0

Not reportedComparator

Verbatim

e0
“The use of rye as a winter cover crop appeared to decrease grain yield one of two yr but had no significant effect on residual soil N content.”
✓ located verbatim in the source · abstract, characters 792–934

t0
“Corn”
✓ located verbatim in the source · title, characters 80–84

Title

The Effect of Rye Cover Crop and Nitrogen Fertilizer Rate on Yield of Irrigated Corn and Residual Soil Nitrogen

B. A. Kliewer Journal of Agronomic Education 1991. doi:10.2134/jae1991.0065

Other claims from this paper (2)

Intervention effect Excess nitrogen fertilizer did not increase yield or grain protein content.
Intervention effect Rye winter cover cropping appeared to reduce grain yield in one of two years.

Mechanismauthor interpretationoriginal resultprojected

Claim · model-written summary

Higher root yield and slower decomposition may increase soil carbon residence time.

Taxon: Lolium perenne L.Lolium perennee1
Treatment: elevated CO 2e0
Outcome: longer residence time of C in the soile0
Qualifier: probably to a higher C storagee0

Verbatim

e0
“The combination of higher root yields at elevated CO 2 combined with a decrease in root decomposition will lead to a longer residence time of C in the soil and probably to a higher C storage”
✓ located verbatim in the source · abstract, characters 1377–1567

e1
“Grass roots ( Lolium perenne L.)”
✓ located verbatim in the source · abstract, characters 277–309

Title

Long‐Term Decomposition of Grass Roots as Affected by Elevated Atmospheric Carbon Dioxide

J. H. van Ginkel; A. Gorissen; J. A. van Veen Journal of Environmental Quality 1996. doi:10.2134/jeq1996.00472425002500050027x

Other claims from this paper (7)

Intervention effect Elevated CO2 stimulated root growth by 92% after two seasons.
Association CO2 and N concentrations during root growth affected decomposition rate.
Observation After one season, decomposition of 700 roots was 19% lower than 350 roots.
Observation Soil microbial biomass with 700 roots was 44% higher than with 350 roots.
Observation After two seasons, decomposition of 700 low N roots was 14% lower.
Observation High N root decomposition was unaffected.
Observation After two seasons, soil microbial biomass with 700 roots was 30% higher.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Competitiveness of maize or beans increased as crop proportions decreased.

Taxon: maize or beanse6
Treatment: crop proportionse6
Outcome: 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 Maize competitiveness increased with increasing N level.
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.

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“yield decrease”

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