# Avocado on Kenyan farms, mean DBH (Eq. 2)

Aboveground biomass equation for Persea americana, Kenya, from Kuyah et al. 2024. DBH 5.3–96.2 cm. Listed on Tree Allometrics, a free library of tree allometric equations, each quoted from the source that published it.

**From a secondary source, not the original:** we could only read this equation in https://www.cifor-icraf.org/publications/pdf/briefs/Carbon-Sequestration-in-Fruit-Trees.pdf (another paper, brief or compilation). Check it against the original before relying on it.

## Equation

As printed in Kuyah et al. 2024 (CIFOR-ICRAF brief, Table 2):

> Eq. 2 AGB = 0.0638 × μDBH^2.5435 5.3–96.2 2–52 0.86 18.4

Cite: https://treeallometry.org/equations/kuyah-2024-avocado/#equation

In this library's units, ready to compute (aboveground biomass in kg):

```
Aboveground biomass = 0.0638 * D^2.5435
```

Inputs: D = Diameter at breast height (1.3 m) (cm).
The source's own form: 0.0638 * DBH^2.5435, with DBH in cm; output in kg.
Cite: https://treeallometry.org/equations/kuyah-2024-avocado/#canonical

## What it covers

- Output: Aboveground biomass, kg
- Taxon: Persea americana (species), family Lauraceae; broadleaf
- Where: Smallholder farms, Makueni and Kiambu counties, Kenya. Cite: https://treeallometry.org/equations/kuyah-2024-avocado/#where
- Biomes: tropical
- Stand: agroforestry
- DBH range: 5.3–96.2 cm. Cite: https://treeallometry.org/equations/kuyah-2024-avocado/#dbh
- R²: 0.86. Cite: https://treeallometry.org/equations/kuyah-2024-avocado/#r2
- Method: power model. Cite: https://treeallometry.org/equations/kuyah-2024-avocado/#method
- Verification: from a secondary source (https://www.cifor-icraf.org/publications/pdf/briefs/Carbon-Sequestration-in-Fruit-Trees.pdf)
- Last checked: 2026-11-01. Cite: https://treeallometry.org/equations/kuyah-2024-avocado/#checked_at

A missing fit statistic is one the source doesn't state, or that we haven't recorded; it is never estimated. Outside the stated DBH range or region, the equation is an extrapolation.

## Source

Kuyah, S., Muthuri, C.W., Wakaba, D., Cyamweshi, A.R., Kiprotich, P., Mukuralinda, A. (2024). Allometric equations and carbon sequestration potential of mango (Mangifera indica) and avocado (Persea americana) in Kenya. Trees, Forests and People, 15, 100467.

- DOI: https://doi.org/10.1016/j.tfp.2023.100467
- Access: open access
- Every equation from this source: https://treeallometry.org/sources/kuyah-2024/
- Cite: https://treeallometry.org/equations/kuyah-2024-avocado/#source

## The facts, in the source's words

**Equation** (CIFOR-ICRAF brief, Table 2):

> Eq. 2 AGB = 0.0638 × μDBH^2.5435 5.3–96.2 2–52 0.86 18.4

Cite: https://treeallometry.org/equations/kuyah-2024-avocado/#equation

**Equation** (CIFOR-ICRAF brief, key messages):

> avocado trees (AGB = 0.0638 × DBH^2.5435)

Cite: https://treeallometry.org/equations/kuyah-2024-avocado/#quote-expression

**Our note:** Read from the CIFOR-ICRAF brief (Muthuri, Kuyah, Njoki, Wakaba 2024), not the paper. The brief writes μDBH (mean DBH, for multi-stemmed trees) in its table; tree age 2-52 years; MAPE 18.4%. An infographic version reportedly shows 0.0648: confirm against the paper. Mango Eq. 1 uses mean primary-branch diameter (μDPB) and is not included.

## Checks this equation passes

On every build, the library's form and the source's own form (in its units) must both give these values within 1%.

| Inputs | Expected | We get | From |
| --- | --- | --- | --- |
| D = 20 | 130 | 130 | Computed from the printed form: hand-computed from the published form |
| D = 50 | 1,337 | 1,337 | Computed from the printed form: hand-computed from the published form |

Cite: https://treeallometry.org/equations/kuyah-2024-avocado/#checks

The calculator on the page shows carbon as biomass × 0.47 (IPCC 2006 Guidelines, Vol. 4, Ch. 4, Table 4.3) and CO₂e as carbon × 44/12.

## How to cite

Cite the source for the equation: Kuyah, S., Muthuri, C.W., Wakaba, D., Cyamweshi, A.R., Kiprotich, P., Mukuralinda, A. (2024). Allometric equations and carbon sequestration potential of mango (Mangifera indica) and avocado (Persea americana) in Kenya. Trees, Forests and People, 15, 100467. https://doi.org/10.1016/j.tfp.2023.100467

Cite this page for the record and checks: Tree Allometrics (Restoration Scope), "Avocado on Kenyan farms, mean DBH (Eq. 2)", checked 2026-11-01, https://treeallometry.org/equations/kuyah-2024-avocado/. Data CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Quotes are the authors' words.

Data for this equation: https://treeallometry.org/data/equations/kuyah-2024-avocado.json
Report a problem: email info@restorationscope.com with the equation id (kuyah-2024-avocado) and where the right value appears.