Background
Coppice control remains a critical intervention in eucalyptus plantation management, directly influencing rotation success, stand uniformity, and long-term site productivity. Variability in application methods, operator technique, and susceptibility to spray drift continue to affect treatment consistency and overall effectiveness across forestry operations. The TREM Sprayer was developed to address these challenges through a controlled and standardised approach to coppice treatment.
TREM Sprayer configuration and application
The TREM Sprayer is an enclosed, portable treatment unit designed to be positioned directly over a coppice stool. Its cylindrical housing creates a contained treatment zone around the regrowth area, allowing chemical application to take place within a controlled environment. A fixed internal multi-nozzle configuration delivers a defined spray pattern from above and around the coppice, providing uniform 360-degree coverage across a range of regrowth heights and densities. This design supports accurate chemical placement and consistent contact with target stems while substantially limiting external influences on the spray process.
By isolating the application zone from ambient conditions, the enclosed system significantly reduces exposure to wind-related drift. Unlike conventional open spraying methods, which are often constrained by wind speed due to the risk of off-target movement, the TREM Sprayer enables effective application under a broader range of operating conditions when used in accordance with applicable safety procedures and product label instructions. This containment reduces the risk of chemical movement beyond the target area, supporting improved protection of adjacent seedlings, non-target vegetation, and surrounding environments.
System activation initiates a timed, metered spray cycle, removing operator discretion from the application process. This enables consistent doing across operators and sites, improving repeatability and operational predictability. Controlled delivery within the enclosed treatment zone also limits over-application and chemical loss, supporting more efficient use of inputs while maintaining alignment with approved application rates. An audible end-of-cycle signal provides clear feedback to the operator, supporting efficient workflow and sustained field productivity. The ability to operate reliably across more working days further contributes to improved utilisation of labour and equipment within plantation programmes.
Engineered for operational forestry conditions, the TREM Sprayer is robust, straightforward to operate, and suited to scalable deployment across commercial plantations. By combining mechanical containment with basic automation, the system improves treatment consistency, reduces the likelihood of uneven or incomplete application, and supports more reliable coppice control outcomes with reduced need for follow-up interventions.
Acknowledgements
The TREM Sprayer was developed by Finfor (Pty) Ltd and is the subject of an international patent application filed under the Patent Cooperation Treaty (PCT). The system was developed and refined through extensive field testing in commercial plantation environments. Finfor acknowledges the support of Sappi Zululand in KwaZulu-Natal for providing plantation access throughout the development and testing phases, from early concept trials through to commercial readiness, as well as the opportunity to deploy the system within operational forestry conditions. Specific recognition is extended to Mr. Pieter van de Merwe, Mr. Marius Terblanche, and Mr. Innocent Sithole for their involvement and support during the developmental process.
For more information
Company director
Chrisleen Naidoo
Mobile: 073 352 5930
Email: finfor@kwn.co.za
Technical Manager
Mansell Matthew
Mobile: 061 467 5262
Email: mansell.nca@kwn.co.za
General enquiries
Email: finfor1@kwn.co.za
