Messner Carbon Project 3

Messner Carbon Project 3 is a soil carbon sequestration project located in the Shire of Westonia in the eastern Wheatbelt region of Western Australia, approximately 52km east of Merredin. It was registered in June 2022 and covers 1136.18 ha.

Soil carbon sequestration projects under the measurement and models methodology involve baselining soil carbon levels through physical core sampling and implementing new eligible land management activities to increase carbon stocks. Abatement is then quantified over a 25-year crediting period using a hybrid approach of direct measurement and modelling.

The Westonia area is known for broadacre cropping, such as wheat, barley, and canola, and sheep grazing operations. The region is considered semi-arid with low rainfall (averaging roughly 330mm annually), and soils are generally yellow deep sands, sandy gravels, and grey sandy duplex soils.

This project increases soil organic carbon by applying nutrients to the land in the form of synthetic or non-synthetic fertilisers to address material deficiencies, a practice designed to boost plant growth and root biomass. It is part of a massive aggregation of at least 25 "Messner" carbon projects managed by developer AgriProve across the district. Additionally, the project underwent a participant variation in late February 2026 to include AGRIPROVE SOLUTIONS CO NO.2 PTY LTD alongside the original proponent entity.