Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Cocoa with cassava had a slight yield decrease.

Taxon: cocoaTheobroma cacaoe0
Treatment: cocoa/cassava combinatione0
Outcome: yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“cocoa/cassava combination where there was a slight decrease in yield”
✓ located verbatim in the source · abstract, characters 1521–1589

Title

Long Term Assessment Of The Agronomic And Economic Benefits Of Cocoa Food Crop Intercropping In The Absence Of Fertilizer Application

Opoku-Ameyaw, K.; Oppong, F. K.; Acheampong, K.; et al. Zenodo (CERN European Organization for Nuclear Research) 2012. doi:10.5281/zenodo.8168

Other claims from this paper (7)

Intervention effect Cocoa with plantain reduced seedling girth in year two.
Intervention effect Treatments did not significantly affect cocoa height.
Observation The four crop intercrop had the lowest soil N, P and K, without significance.
Intervention effect Intercropped cocoa yielded 28-60% more beans than sole cocoa, except cocoa with cassava.
Observation Intercropping was profitable.
Association Plantain and maize combinations produced higher net benefits.
Recommendation The authors recommend intercropping during establishment.

Recommendationauthor interpretationoriginal resultnegativebasis n/a

Claim · model-written summary

Excessive shade was concluded to decrease cocoa yield.

Taxon: cocoaTheobroma cacaoe0
Treatment: excessive shadee0
Outcome: yielde0
Direction: decreasese0

Verbatim

e0
“excessive shade decreases yield of cocoa”
✓ located verbatim in the source · abstract, characters 1873–1913

Title

Micro-Climate Conditions, Weed Diversity, Flowering and Yield of Young Cacao Plants as Affected by Shade Regimes

Idowu Babadele Famuwagun; Samuel O. Agele International Letters of Natural Sciences 2021. doi:10.56431/p-f18s7i

Other claims from this paper (10)

Intervention effect No-shade plots had significantly higher air temperature than shaded plots in 2015 and 2016.
Intervention effect No-shade plots had significantly higher soil temperature than shaded plots in 2015 and 2016.
Intervention effect Soil temperature did not differ significantly by shade in 2017.
Intervention effect Weed vigour was significantly higher without shade.
Intervention effect Flower production was significantly higher without shade in 2015 and 2016.
Intervention effect Pod production was significantly higher without shade in 2016 and 2017.
Intervention effect Cherelle wilt rate was higher in shaded plots.
Intervention effect Pod yield parameters were significantly higher without shade.
Association Air temperature of 30°C to 33.7°C during flowering and pod setting positively influenced bean yield.
Mechanism Temperature and relative humidity increases were concluded to boost physiological processes for pod production.

Associationobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

For cocoa agroforestry adopters, a one-millimeter rainfall decrease reduced yield by 2.17 kg/ha.

Taxon: cocoaTheobroma cacaot0
Material: adopterse0
Treatment: one-millimeter decrease in rainfalle0
Outcome: yielde0
Direction: reducese0
Value: 2.17 kg/hae0

Verbatim

e0
“A one-millimeter decrease in rainfall significantly reduces yield by 2.17 kg/ha for adopters and 2.84 kg/ha for non-adopters”
✓ located verbatim in the source · abstract, characters 1004–1128

t0
“cocoa”
✓ located verbatim in the source · title, characters 76–81

Title

Agroforestry as a climate change adaptation strategy: Evidence from Ghana's cocoa sector

Marlene Yu Lilin Wätzold; Katharina Krumbiegel; Pascal Tillie; et al. Agricultural Systems 2025. doi:10.1016/j.agsy.2025.104519

Other claims from this paper (5)

Associationobservedoriginal resultmeasured

Claim · model-written summary

The correlation of cocoa yield with trunk girth tends to decrease as trees age.

Taxon: cocoa treesTheobroma cacaoe1
Material: Amelo- nadoe1
Organ / stage: increasing age of the treese0
Outcome: correlations of yield with trunk girthe0
Direction: decreasee0

Verbatim

e0
“with increasing age of the trees, correlations of yield with trunk girth tend to decrease”
✓ located verbatim in the source · abstract, characters 154–243

e1
“Amelo- nado cocoa trees derived from seed”
✓ located verbatim in the source · abstract, characters 65–106

Title

The Use of Trunk Girth as a Calibrating Variate for Field Experiments on Cocoa Trees

J. F. Longworth; G. H. Freeman Journal of Horticultural Science 1963. doi:10.1080/00221589.1963.11514060

Other claims from this paper (4)

Associationobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

For cocoa non-adopters, a one-millimeter rainfall decrease reduced yield by 2.84 kg/ha.

Taxon: cocoaTheobroma cacaot0
Material: non-adopterse0
Treatment: one-millimeter decrease in rainfalle0
Outcome: yielde0
Direction: reducese0
Value: 2.84 kg/hae0

Verbatim

e0
“A one-millimeter decrease in rainfall significantly reduces yield by 2.17 kg/ha for adopters and 2.84 kg/ha for non-adopters”
✓ located verbatim in the source · abstract, characters 1004–1128

t0
“cocoa”
✓ located verbatim in the source · title, characters 76–81

Title

Agroforestry as a climate change adaptation strategy: Evidence from Ghana's cocoa sector

Marlene Yu Lilin Wätzold; Katharina Krumbiegel; Pascal Tillie; et al. Agricultural Systems 2025. doi:10.1016/j.agsy.2025.104519

Other claims from this paper (5)

Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

Vertebrate species richness did not decrease with cacao yield in smallholder agroforests in Indonesia.

Taxon: cacaoTheobroma cacaoe0
Outcome: vertebratese1
Direction: did not decreasee1
Setting: Indonesiae0

Verbatim

e0
“Here, we integrate biodiversity and crop productivity data for smallholder cacao in Indonesia to exemplify for tropical agroforests that there is little relationship between yield and biodiversity under current management”
✓ located verbatim in the source · abstract, characters 238–459

e1
“Species richness of trees, fungi, invertebrates, and vertebrates did not decrease with yield”
✓ located verbatim in the source · abstract, characters 529–621

Title

Combining high biodiversity with high yields in tropical agroforests

Yann Clough; Jan Barkmann; Jana Juhrbandt; et al. Proceedings of the National Academy of Sciences 2011. doi:10.1073/pnas.1016799108

Other claims from this paper (4)

Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

Species richness of trees, fungi and invertebrates did not decrease with cacao yield in smallholder agroforests in Indonesia.

Taxon: cacaoTheobroma cacaoe0
Outcome: Species richness of trees, fungi, invertebratese1
Direction: did not decreasee1
Setting: Indonesiae0

Verbatim

e0
“Here, we integrate biodiversity and crop productivity data for smallholder cacao in Indonesia to exemplify for tropical agroforests that there is little relationship between yield and biodiversity under current management”
✓ located verbatim in the source · abstract, characters 238–459

e1
“Species richness of trees, fungi, invertebrates, and vertebrates did not decrease with yield”
✓ located verbatim in the source · abstract, characters 529–621

Title

Combining high biodiversity with high yields in tropical agroforests

Yann Clough; Jan Barkmann; Jana Juhrbandt; et al. Proceedings of the National Academy of Sciences 2011. doi:10.1073/pnas.1016799108

Other claims from this paper (4)

Observationobservedoriginal resultprojected

Claim · model-written summary

Cocoa yield was projected to fall by 13,504 tonnes per year by 2100.

Taxon: cocoaTheobroma cacaoe0
Outcome: future decreasee0
Direction: decreasee0
Value: 13,504 tonnes/yre0
Qualifier: by 2100e0

Verbatim

e0
“a long-term future decrease of 13,504 tonnes/yr of cocoa by 2100”
✓ located verbatim in the source · abstract, characters 914–978

Title

Future Impact of Climate Change on the Yield of Cocoa in Ondo State, Nigeria

Femi S. Omotayo; Philip G. Oguntunde; Ayorinde A. Olufayo International Journal of Environment and Climate Change 2019. doi:10.9734/ijecc/2019/v9i830132

Other claims from this paper (7)

Observation Cocoa yield declined at 492.18 tonnes per year.
Observation Annual rainfall had a significant increasing trend.
Observation Maximum, minimum and mean temperature increased by 0.02 per year.
Observation Cocoa yield was projected to fall by about 9,334 tonnes per year by 2050.
Observation Projected cocoa yield loss could cost $22,470,018.22 by 2050.
Observation Projected cocoa yield loss could cost $32,308,584.32 by 2100.
Recommendation The authors recommend mitigation of climate effects on future cocoa yield.

Associationobservedoriginal resultnegativesignificant (as stated)projected

Claim · model-written summary

Decreased rainfall would significantly reduce cocoa bean yield.

Taxon: CocoaTheobroma cacaot0
Treatment: decrease in rainfalle0
Outcome: cocoa bean yielde0
Direction: reducee0

Verbatim

e0
“decrease in rainfall, increase in temperature and increase in PET, would significantly reduce the cocoa bean yield”
✓ located verbatim in the source · abstract, characters 927–1041

t0
“Cocoa”
✓ located verbatim in the source · title, characters 28–33

Title

Climate Driven Responses in Cocoa for Tamil Nadu, India

M. Selva Kumar; V. Geethalakshmi; P. Irene Vethamoni; et al. International Journal of Environment and Climate Change 2022. doi:10.9734/ijecc/2022/v12i1131049

Other claims from this paper (7)

Association Cocoa had a positive correlation with rainfall.
Association Cocoa had a positive correlation with actual evapotranspiration.
Association Maximum temperature had a significantly negative effect on cocoa productivity.
Association Minimum temperature had a significantly negative effect on cocoa productivity.
Association Increased temperature would significantly reduce cocoa bean yield.
Association Increased PET would significantly reduce cocoa bean yield.
Recommendation The authors call for management measures to sustain cocoa productivity under warming and erratic rainfall.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Timber shade agroforestry did not lower cocoa yield.

Taxon: cocoaTheobroma cacaoe0
Outcome: cocoa yielde0
Direction: did not decreasee0

Verbatim

e0
“cocoa agroforestry by using timber trees in regular planting pattern and accurate spacing did not decrease cocoa yield”
✓ located verbatim in the source · abstract, characters 943–1061

Title

Impact of Teak (Tectona grandis Linn.) Thinning Out and Peacock-Plume [Paraserianthes falcataria L. (I. Nielsen)] Harvesting on Mineral Cycle, Pod Rot Incidence, Changing of Cocoa Yield, and Land Productivity in Indonesia

A.A. Prawoto Journal of Agricultural Science and Technology B 2012

Other claims from this paper (14)

Observation Timber shade agroforestry improved land productivity.
Observation Paraserianthes harvest produced 0.71 m^3 timber per tree.
Observation Teak thinning produced 0.07 m3 wood per tree.
Observation Harvest of 108 Paraserianthes trees affected 81 cocoa trees.
Observation Serious cocoa tree damage after Paraserianthes harvest was 11.9%.
Observation Medium cocoa tree damage after Paraserianthes harvest was 6.85%.
Observation Light cocoa tree damage after Paraserianthes harvest was 5.36%.
Observation Teak spacing caused no serious cocoa tree damage.
Observation Harvested Paraserianthes biomass returned fertilizer equivalents of 543 g per tree.
Observation Harvested teak biomass returned fertilizer equivalents of 250 g per tree.
Observation Paraserianthes harvest and teak thinning warmed the microclimate and lowered humidity.
Observation Paraserianthes harvest lowered pod rot incidence.
Observation Paraserianthes plot pod yield improved by 71%.
Observation Teak plot pod yield improved by 27.25%.

“yield decrease”

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