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“decrease in density”

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Taxon: cassava ✕

Taxon groups are the verbatim names found in the abstracts (case-insensitive), not normalised: maize, corn and Zea mays are separate groups here. The Organism view merges them through NCBI Taxonomy.

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 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.

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.

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