Claim · model-written summary
Low altitude zones had greater root yield than mid altitude zones.
- Taxon
- cassava
Manihot esculentat0 - Outcome
- root yielde1
- Direction
- highere0
- Value
- 13.6 t/hae0
- Comparator
- mid (8.5 t/ha) altitude zonese0
- Setting
- low altitude zonese0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“It was significantly (P 0.05) higher (13.6 t/ha) in the low altitude zones than in the mid (8.5 t/ha) altitude zones.”
t0“cassava”
e1“The overall mean root yield”
Title
The contibutions of soil properties to cassava yield parameters in Sub-Saharan Africa
C L Asadu; F I Nweke; A G Dixen Agro-Science 2007. doi:10.4314/as.v6i1.1551
Other claims from this paper (14)
- Association Interactions among site factors affected cassava yield parameters more than individual factors.
- Association Climate alone had no significant effect on yield parameters.
- Association Climate by market access interaction significantly affected root yield.
- Association Population by market access interaction significantly affected root yield.
- Observation Mean cassava root yield was 13.1 t/ha.
- Association Root yield was highest in subhumid zones and lowest in highland humid zones.
- Association Soil variables explained about 30% of root yield variation across the subregion.
- Association Soil variables explained 32% of lowland root yield variation.
- Association Soil variables explained about 40% of nonhumid root yield variation.
- Association Soil variables explained more than 45% of highland humid root yield variation.
- Association Total sulphur contributed consistently more to root yield variation than other soil variables.
- Association Soil variables contributed about 35% to shoot yield.
- Association Soil variables contributed about 30% to harvest index.
- Association Soil variables contributed about 50% to stand density.