Claim · model-written summary
Partner effects on the production variables of cocoa could not be explained by the production variables themselves.
- Taxon
- cocoa tree
Theobroma cacaoe0 - Outcome
- partner effects on the production variablese6
- Comparator
- any of the production variables themselvese6
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“applied to the cocoa tree”
e6“The partner effects on the production variables could never be explained by any of the production variables themselves, hence it should be possible to select non-aggressive high-yielding families”
Title
Philippe Lachenaud Agritrop (Cirad) 2005
Other claims from this paper (10)
- Association Competition (partner) effects explained 8 to 10% of the residual variance in cocoa after removal of hybrid and micro-environmental effects.
- Observation Competition effects on cocoa vigour were detectable by 18 months after planting, earlier than generally acknowledged.
- Association Competition effects for cocoa yield increased with the age of the plantation.
- Association Competition effects for cocoa yield decreased drastically after thinning at 10 years.
- Observation Under the trial conditions the cocoa families could be classified as aggressive, stimulating or passive relative to their neighbours.
- Association Vegetative vigour (trunk cross-sectional area) explained up to 34% of the competition effects affecting vegetative development, total pod production and total pod weight, in cocoa.
- Observation No significant partner effect was observed for cocoa average pod weight.
- Recommendation It should be possible to select non-aggressive high-yielding cocoa families.
- Recommendation Improvement of cropping efficiency in cocoa can follow genetic and plant husbandry pathways, including management of vegetative vigour.
- Recommendation The genetic pathway for cocoa is selection of hybrid or clonal material with low vigour.