Establishment: Eucalyptus grandis × urophylla
Commercial validation trial
Commercial validation trial

Wet subtropics, Salpine: Eucalyptus grandis × urophylla

In a 12-month open-field trial in Salpine, South Africa, Forest3 Rootzone was compared with standard forestry fertilization practices during Eucalyptus grandis x urophylla establishment.

At 7 months after transplanting, trees treated with Forest3 Rootzone reached a mean height of 2.4 m, compared with 2.0 m under standard fertilization practices. A +20% difference under wet subtropical conditions.

Eucalyptus

Subtropical

Salpine, South Africa

2025

Currently growing...

Key conclusions

+20

%

Greater mean tree height

At 7 months after transplanting, compared with standard forestry fertilization practices.

Forest3 Rootzone-treated trees reached 2.4 m after 7 months.

Mean height was 2.4 m with Forest3 Rootzone versus 2.0 m under standard forestry fertilization practices.

Greater early height performance under wet subtropical field conditions.

The observed height advantage was measured 7 months after transplanting during Eucalyptus grandis x urophylla establishment.

+40

cm

Difference in mean tree height

The 0.4 m difference at 7 months corresponds to 20% greater mean tree height.

Objective

Evaluating Forest3 Rootzone fertilizer performance during Eucalyptus grandis × urophylla establishment.

Trial details

Species
Species

Eucalyptus

Fast-growing hardwood for pulp and timber.

Location
Location

Southern Africa

Program principles
Program principles

Establishment

Climate
Climate

Subtropical

Results

Field performance

The graph compares tree height at 7 months after transplanting for trees treated with Forest3 Rootzone and those receiving standard forestry fertilization. Heights are expressed in m.  

‍

Mean tree height

Taller trees after transplanting

At 7 months after transplanting, trees treated with Forest3 Rootzone reached a mean height of 2.4 m, compared with 2.0 m for trees receiving standard forestry fertilization. This measured difference of 0.4 m corresponds to 20% greater mean tree height under wet subtropical field conditions.

Mean Eucalyptus tree height at 7 months: standard fertilization 2.0 m, Forest3 Rootzone 2.4 m (+20%)

Mean tree height (m) at 7 months after transplanting. Source: 25.F3.P-EUC-ZA02.

Detailed report

Read the full trial report

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