Holloway Carbon Project - Breust 3

Holloway Carbon Project - Breust 3 is a soil carbon project located approximately 20km west of Temora in NSW. It was registered in September 2021 and covers 302.98ha.

Soil carbon projects involve changing agricultural management practices to increase the amount of carbon stored in the soil. Under the Estimation of Soil Organic Carbon Sequestration using Measurement and Models (2021) methodology, projects must measure a baseline soil carbon level and then use a combination of direct soil core sampling and modelling to estimate carbon sequestration over time.

The Temora area is known for broadacre cropping and mixed sheep and cattle grazing operations. The area is considered to have moderate to semi-arid rainfall and soils are generally red-brown earths and clay loams.

This project increases carbon in soil in the agricultural system by retaining stubble after a crop is harvested, converting from intensive tillage practices to reduced or no tillage practices, and applying synthetic or non-synthetic nutrients to the land to address a material deficiency. Interestingly, the project was varied in July 2024 to transition from the older 2018 measurement methodology to the updated 2021 measurement and models determination, a common shift that allows proponents greater flexibility by integrating modelled estimates to reduce ongoing physical sampling costs.