Claim · model-written summary
Biochar alone or with TSP significantly increased soil organic carbon and cation exchange capacity.
- Taxon
- cowpea
Vigna unguiculatae1 - Treatment
- biochar solely or in combination with TSPe0
- Outcome
- soil organic carbon, cation exchange capacitye0
- Direction
- increasede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Addition of biochar solely or in combination with TSP significantly (p < 0.05) increased soil pH, total nitrogen, available phosphorus, soil organic carbon, cation exchange capacity and root nodule count.”
e1“of cowpea roots and leaves”
Title
Christian Adler Phares; Kofi Atiah; Kwame Agyei Frimpong; et al. Heliyon 2020. doi:10.1016/j.heliyon.2020.e05255
Other claims from this paper (8)
- Intervention effect Biochar alone or with TSP significantly increased rhizosphere soil pH, nitrogen, and available phosphorus.
- Intervention effect Biochar alone or with TSP significantly increased cowpea root nodule count.
- Intervention effect Amended soils significantly raised flavonoid, phenol, and alkaloid contents in cowpea roots and leaves relative to unamended soil.
- Intervention effect Amended soils significantly raised saponin and tannin contents in cowpea roots and leaves relative to unamended soil.
- Intervention effect Amended soils significantly raised antioxidant activity in cowpea roots and leaves relative to unamended soil.
- Intervention effect Soil flavonoids, phenols, alkaloids, and antioxidant activity were significantly higher in amended soils than control soil.
- Association Soil properties, nodule number, and phytoconstituents had significant positive correlations of varying strength.
- Recommendation The authors suggest co-applying biochar and triple superphosphate to sustain fertility, improve nodulation, and raise cowpea phytoconstituents.