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“decrease in density”

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Organism: Manihot esculenta ✕

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

A density of 25 mites/leaf was the threshold causing significant decrease of photosynthetic pigment contents and protective enzyme activities in cassava leaves in the laboratory.

Taxon: cassavaManihot esculentae0
Organ / stage: leavese0
Treatment: mite density of 25 mites/leafe0
Interactor: mitee0pest
Outcome: photosynthetic pigment contents and protective enzyme activitiese0
Direction: decreasee0
Setting: the laboratorye0

Not reportedComparator

Verbatim

e0
“The mite density of 25 mites/leaf was the threshold which caused significant decrease of photosynthetic pigment contents and protective enzyme activities in cassava leaves in the laboratory”
✓ located verbatim in the source · abstract, characters 618–807

Title

Density threshold‐based acaricide application for the two‐spotted spider mite Tetranychus urticae on cassava: from laboratory to the field

Qing Chen; Qing Chen; Xiao Liang; et al. Pest Management Science 2019. doi:10.1002/ps.5366

Other claims from this paper (4)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Applying bio-organic fertilizer obviously decreased soil bulk density in a cassava field.

Taxon: CassavaManihot esculentat0
Treatment: bio-organic fertilizere0
Outcome: bulk density of soile0
Direction: decreasee0

Not reportedComparator

Verbatim

t0
“Cassava field”
✓ located verbatim in the source · title, characters 90–103

e0
“applying bio-organic fertilizer could decrease the bulk density of soil obviously”
✓ located verbatim in the source · abstract, characters 278–359

Title

Effects of bio-organic fertilizer on the physical and chemical characteristics of soil in Cassava field

Cen Zhongyong; Xinglu Luo; Su Jiang; et al. Xi'nan nongye xuebao 2006

Other claims from this paper (4)

Intervention effect Bio-organic fertilizer increased soil porosity in a cassava field.
Intervention effect Bio-organic fertilizer increased soil urease and invertase activity in a cassava field.
Intervention effect Bio-organic fertilizer increased soil hydrolyzable N, available P and available K contents in a cassava field.
Intervention effect The promoting effects of bio-organic fertilizer differed with fertilizer application rate and stage.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing density from 12000 to 18000 plants/ha decreased root tuber yield in Amani 4026/16.

Taxon: cassavaManihot esculentat0
Material: Amani 4026/16e0
Treatment: Increase in plant density from 12000 to 18000 plants/hae0
Outcome: root tuber yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Increase in plant density from 12000 to 18000 plants/ha led to a decrease in root tuber yield in Amani 4026/16.”
✓ located verbatim in the source · abstract, characters 615–726

t0
“three cassava varieties”
✓ located verbatim in the source · title, characters 16–39

Title

Growth rates of three cassava varieties (Manihot esculenta Crantz) under varying population densities

B. A. C. Enyi The Journal of Agricultural Science 1973. doi:10.1017/s0021859600058251

Other claims from this paper (19)

Observation Msitu Zanzibar had greater yield than Aipin Valenca and Amani 4026/16.
Observation Aipin Valenca yielded more than Amani 4026/16.
Association Varietal yield differences were associated with bulking rate.
Intervention effect Higher plant density increased tuber yield per hectare, with a greater mean increase in Aipin Valenca than the other two varieties.
Observation Calculated optimum density for maximum yield in Msitu Zanzibar was 6·7 plants/m 2.
Observation Calculated optimum density for maximum yield in Aipin Valenca was 6·4 plants/m 2.
Observation Calculated optimum density for maximum yield in Amani 4026/16 was 5·6 plants/m 2.
Association Spacing effects on tuber yield were associated with bulking rate differences.
Observation Aipin Valenca was usually taller than the other varieties.
Intervention effect Increasing density generally increased plant height.
Observation Final total dry matter per area was greater in Aipin Valenca and Msitu Zanzibar than Amani 4026/16.
Intervention effect Increasing density increased dry matter per area except in Amani 4026/16.
Observation Dry matter per plant was greatest in Msitu Zanzibar, followed by Aipin Valenca and Amani 4026/16.
Intervention effect Dry weight per plant increased as plant density decreased in all three varieties.
Observation Aipin Valenca and Msitu Zanzibar allocated more dry matter to root tubers than Amani 4026/16.
Intervention effect Increasing density generally decreased dry matter allocation to root tubers.
Intervention effect Higher density increased crop growth rate but decreased net assimilation and relative growth rates.
Intervention effect Higher density decreased net assimilation and relative growth rates.
Association Bulking rate was positively related to root tuber yield.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Higher maize density significantly decreased cassava leaf area.

Taxon: CASSAVAManihot esculentat0
Treatment: maize planting densitye0
Outcome: cassava leaf areae0
Direction: decreasee0
Qualifier: 2.74 m2/plante0
Comparator: sole cropped cassava (control)e0

Verbatim

e0
“increase in maize planting density resulted in a significant decrease in cassava leaf areafrom 2.74 m2/plant for sole cropped cassava (control) to 2.43, 2.20, 2.02 and 1.74 m2/plant”
✓ located verbatim in the source · abstract, characters 1092–1273

t0
“CASSAVA (Manihot esculenta Crantz)”
✓ located verbatim in the source · title, characters 116–150

Title

EFFECTS OF INCREASING MAIZE PLANTING DENSITY IN A CASSAVA/MAIZE MIXTURE AND WEEDING FREQUENCY ON THE PERFORMANCE OF CASSAVA (Manihot esculenta Crantz) IN ADO – EKITI, SOUTHWESTERN NIGERIA

B. Osundare Journal of Agricultural Science and Environment 2010

Other claims from this paper (6)

Observation At 20,000 maize plants per hectare cassava leaf area was 2.43 m2/plant.
Intervention effect Increasing maize density significantly reduced cassava tuber weight.
Intervention effect Weeding significantly increased cassava leaf area.
Intervention effect Weeding significantly increased cassava tuber yield.
Association Maize density and weeding interactions significantly affected cassava growth and yield.
Observation Sole cassava with W2 gave highest growth and yield indices in both years.

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher densities of bacteria and fungi, microbial biomass, urease and arylsulphatase activities correlated with lower cassava root rot severity.

Taxon: cassavaManihot esculentat0
Treatment: higher density of bacteria and fungal populationse3
Outcome: disease severitye3
Direction: decreasee3

Verbatim

t0
“black root rot in cassava”
✓ located verbatim in the source · title, characters 66–91

e3
“The higher density of bacteria and fungal populations, microbial biomass, urease and arylsulphatase activities correlated with a decrease in disease severity”
✓ located verbatim in the source · abstract, characters 849–1006

Title

Soils from intercropped fields have a higher capacity to suppress black root rot in cassava, caused by Scytalidium lignicola

Erika Valente de Medeiros; Krystal de Alcantara Notaro; Jamilly Alves de Barros; et al. Journal of Phytopathology 2019. doi:10.1111/jph.12788

Other claims from this paper (4)

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Increasing maize density significantly reduced cassava tuber weight.

Taxon: CASSAVAManihot esculentat0
Treatment: maize planting densitye0
Outcome: cassava tuber weighte0
Direction: decreasee0
Qualifier: 9.71 t ha-1e0
Comparator: sole cropped cassava (control)e0

Verbatim

e0
“increase in maize planting density resulted in a significantdecrease in cassava tuber weight from 9.71 t ha-1 for sole cropped cassava (control) to 9.24,8.78, 8.27 and 7.80 t ha-1”
✓ located verbatim in the source · abstract, characters 1436–1615

t0
“CASSAVA (Manihot esculenta Crantz)”
✓ located verbatim in the source · title, characters 116–150

Title

EFFECTS OF INCREASING MAIZE PLANTING DENSITY IN A CASSAVA/MAIZE MIXTURE AND WEEDING FREQUENCY ON THE PERFORMANCE OF CASSAVA (Manihot esculenta Crantz) IN ADO – EKITI, SOUTHWESTERN NIGERIA

B. Osundare Journal of Agricultural Science and Environment 2010

Other claims from this paper (6)

Intervention effect Higher maize density significantly decreased cassava leaf area.
Observation At 20,000 maize plants per hectare cassava leaf area was 2.43 m2/plant.
Intervention effect Weeding significantly increased cassava leaf area.
Intervention effect Weeding significantly increased cassava tuber yield.
Association Maize density and weeding interactions significantly affected cassava growth and yield.
Observation Sole cassava with W2 gave highest growth and yield indices in both years.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The integration method decreased soil bulk density by 5.63 % versus the control.

Taxon: cassavaManihot esculentat0
Treatment: integration methode0
Outcome: soil bulk densitye0
Direction: decreasee0
Value: 5.63 %e0
Comparator: controle0

Verbatim

t0
“cassava”
✓ located verbatim in the source · title, characters 64–71

e0
“Compared with the control,integration method brought about the increase of 11.14%,15.06%,12.44%,21.43%,32.39%,23.04% and 7697.90 yuan/ha on cassava stem diameter,tuberous root diameter,tuberous root length,tuberous root number per plant,tuberous root weight per plant,fresh weight of tuberous root per hectare and benefit,increase of 8.84%,8.73%,5.22%,7.56%,3.08%,15.51% and 9.86% on available nitrogen,phosphorus,potass…” Show full quote
✓ located verbatim in the source · abstract, characters 720–1258

Title

Effects of integrated fertilization and tillage technologies on cassava yield and physical and chemical properties of soil

HE Yong-qu Nanfang nongye xuebao 2014

Other claims from this paper (15)

Intervention effect The integration method increased cassava stem diameter by 11.14% versus the control.
Intervention effect The integration method increased tuberous root diameter by 15.06% versus the control.
Intervention effect The integration method increased tuberous root length by 12.44% versus the control.
Intervention effect The integration method increased tuberous root number per plant by 21.43% versus the control.
Intervention effect The integration method increased tuberous root weight per plant by 32.39% versus the control.
Intervention effect The integration method increased fresh weight of tuberous root per hectare by 23.04% versus the control.
Intervention effect The integration method increased benefit by 7697.90 yuan/ha versus the control.
Intervention effect The integration method increased available nitrogen by 8.84% versus the control.
Intervention effect The integration method increased phosphorus by 8.73% versus the control.
Intervention effect The integration method increased potassium by 5.22% versus the control.
Intervention effect The integration method increased organic matter by 7.56% versus the control.
Intervention effect The integration method increased pH by 3.08% versus the control.
Intervention effect The integration method increased moisture content by 15.51% versus the control.
Intervention effect The integration method increased total porosity by 9.86% versus the control.
Recommendation The authors recommend the integrated fertilization and tillage method for cassava production.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The integration method increased phosphorus by 8.73% versus the control.

Taxon: cassavaManihot esculentat0
Treatment: integration methode0
Outcome: phosphoruse0
Direction: increasee0
Value: 8.73%e0
Comparator: controle0

Verbatim

t0
“cassava”
✓ located verbatim in the source · title, characters 64–71

e0
“Compared with the control,integration method brought about the increase of 11.14%,15.06%,12.44%,21.43%,32.39%,23.04% and 7697.90 yuan/ha on cassava stem diameter,tuberous root diameter,tuberous root length,tuberous root number per plant,tuberous root weight per plant,fresh weight of tuberous root per hectare and benefit,increase of 8.84%,8.73%,5.22%,7.56%,3.08%,15.51% and 9.86% on available nitrogen,phosphorus,potass…” Show full quote
✓ located verbatim in the source · abstract, characters 720–1258

Title

Effects of integrated fertilization and tillage technologies on cassava yield and physical and chemical properties of soil

HE Yong-qu Nanfang nongye xuebao 2014

Other claims from this paper (15)

Intervention effect The integration method increased cassava stem diameter by 11.14% versus the control.
Intervention effect The integration method increased tuberous root diameter by 15.06% versus the control.
Intervention effect The integration method increased tuberous root length by 12.44% versus the control.
Intervention effect The integration method increased tuberous root number per plant by 21.43% versus the control.
Intervention effect The integration method increased tuberous root weight per plant by 32.39% versus the control.
Intervention effect The integration method increased fresh weight of tuberous root per hectare by 23.04% versus the control.
Intervention effect The integration method increased benefit by 7697.90 yuan/ha versus the control.
Intervention effect The integration method increased available nitrogen by 8.84% versus the control.
Intervention effect The integration method increased potassium by 5.22% versus the control.
Intervention effect The integration method increased organic matter by 7.56% versus the control.
Intervention effect The integration method increased pH by 3.08% versus the control.
Intervention effect The integration method increased moisture content by 15.51% versus the control.
Intervention effect The integration method increased total porosity by 9.86% versus the control.
Intervention effect The integration method decreased soil bulk density by 5.63 % versus the control.
Recommendation The authors recommend the integrated fertilization and tillage method for cassava production.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The integration method increased potassium by 5.22% versus the control.

Taxon: cassavaManihot esculentat0
Treatment: integration methode0
Outcome: potassiume0
Direction: increasee0
Value: 5.22%e0
Comparator: controle0

Verbatim

t0
“cassava”
✓ located verbatim in the source · title, characters 64–71

e0
“Compared with the control,integration method brought about the increase of 11.14%,15.06%,12.44%,21.43%,32.39%,23.04% and 7697.90 yuan/ha on cassava stem diameter,tuberous root diameter,tuberous root length,tuberous root number per plant,tuberous root weight per plant,fresh weight of tuberous root per hectare and benefit,increase of 8.84%,8.73%,5.22%,7.56%,3.08%,15.51% and 9.86% on available nitrogen,phosphorus,potass…” Show full quote
✓ located verbatim in the source · abstract, characters 720–1258

Title

Effects of integrated fertilization and tillage technologies on cassava yield and physical and chemical properties of soil

HE Yong-qu Nanfang nongye xuebao 2014

Other claims from this paper (15)

Intervention effect The integration method increased cassava stem diameter by 11.14% versus the control.
Intervention effect The integration method increased tuberous root diameter by 15.06% versus the control.
Intervention effect The integration method increased tuberous root length by 12.44% versus the control.
Intervention effect The integration method increased tuberous root number per plant by 21.43% versus the control.
Intervention effect The integration method increased tuberous root weight per plant by 32.39% versus the control.
Intervention effect The integration method increased fresh weight of tuberous root per hectare by 23.04% versus the control.
Intervention effect The integration method increased benefit by 7697.90 yuan/ha versus the control.
Intervention effect The integration method increased available nitrogen by 8.84% versus the control.
Intervention effect The integration method increased phosphorus by 8.73% versus the control.
Intervention effect The integration method increased organic matter by 7.56% versus the control.
Intervention effect The integration method increased pH by 3.08% versus the control.
Intervention effect The integration method increased moisture content by 15.51% versus the control.
Intervention effect The integration method increased total porosity by 9.86% versus the control.
Intervention effect The integration method decreased soil bulk density by 5.63 % versus the control.
Recommendation The authors recommend the integrated fertilization and tillage method for cassava production.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The integration method increased pH by 3.08% versus the control.

Taxon: cassavaManihot esculentat0
Treatment: integration methode0
Outcome: pHe0
Direction: increasee0
Value: 3.08%e0
Comparator: controle0

Verbatim

t0
“cassava”
✓ located verbatim in the source · title, characters 64–71

e0
“Compared with the control,integration method brought about the increase of 11.14%,15.06%,12.44%,21.43%,32.39%,23.04% and 7697.90 yuan/ha on cassava stem diameter,tuberous root diameter,tuberous root length,tuberous root number per plant,tuberous root weight per plant,fresh weight of tuberous root per hectare and benefit,increase of 8.84%,8.73%,5.22%,7.56%,3.08%,15.51% and 9.86% on available nitrogen,phosphorus,potass…” Show full quote
✓ located verbatim in the source · abstract, characters 720–1258

Title

Effects of integrated fertilization and tillage technologies on cassava yield and physical and chemical properties of soil

HE Yong-qu Nanfang nongye xuebao 2014

Other claims from this paper (15)

Intervention effect The integration method increased cassava stem diameter by 11.14% versus the control.
Intervention effect The integration method increased tuberous root diameter by 15.06% versus the control.
Intervention effect The integration method increased tuberous root length by 12.44% versus the control.
Intervention effect The integration method increased tuberous root number per plant by 21.43% versus the control.
Intervention effect The integration method increased tuberous root weight per plant by 32.39% versus the control.
Intervention effect The integration method increased fresh weight of tuberous root per hectare by 23.04% versus the control.
Intervention effect The integration method increased benefit by 7697.90 yuan/ha versus the control.
Intervention effect The integration method increased available nitrogen by 8.84% versus the control.
Intervention effect The integration method increased phosphorus by 8.73% versus the control.
Intervention effect The integration method increased potassium by 5.22% versus the control.
Intervention effect The integration method increased organic matter by 7.56% versus the control.
Intervention effect The integration method increased moisture content by 15.51% versus the control.
Intervention effect The integration method increased total porosity by 9.86% versus the control.
Intervention effect The integration method decreased soil bulk density by 5.63 % versus the control.
Recommendation The authors recommend the integrated fertilization and tillage method for cassava production.

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“decrease in density”

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