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About Oak Valley

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The Oak Valley property is situated near the intersection of Seven Day Road and Appadene Road, approximately 10km south-west of Manjimup. The Oak Valley property was selected for the trufferie because the region has a similar climate to the truffle-growing regions in France. The property is located close to the existing trufferie at Hazel Hill. which is now successfully producing truffles.

Oak Valley is an undulating property previously used for cattle grazing, and adjoins a state forest. The property is comprised of 88ha of cleared land and another 40ha of land under native vegetation. Adjoining the property to the north-west is a dam, which provides the town water supply for Manjimup.

The Oak Valley property is serviced by a 300ML dam located to the west of the plantings. Further improvements on the property include a two-bedroom brick veneer home and a recently constructed building comprised of machinery shed, a truffle processing area, laboratory, and office.

Region and Climate

Manjimup is located approximately 300km south of Perth in a region that sustains broad acre agriculture, horticulture, and forestry. The region experiences a Mediterranean style climate with hot summers and relatively mild winters. Annual rainfall in the region is winter-dominant and averages a high 1,010mm, although supplementary irrigation is required in the summer months to maintain soil moisture. Mean daily maximum temperatures in the region range between 14.3°C in July and 27°C in January. (Bureau of Meteorology (BOM) 2008).

Site Development & Project Infrastructure

Initial site preparation works already completed for future developments include the installation of irrigation main lines, deep ripping of tree rows, and the application of approximately 40t/ha of lime sand to increase the soil pH to between approximately 7.5 and 7.9.

Hazelnut and English oak trees are planted in rows at a density of 500 trees per hectare. OVTB intends to plant 50% of each species, planting each species alternately in each row, in order to spread the risk on the most suitable species for truffle production. The hazelnut tree is considered a natural undergrowth tree compared to the larger growing English oak. The 5m x 4m tree spacing will allow for adequate machinery access without the risk of compacting the soil profile around the tree roots.

Water and fertigation for the property is to be delivered via an automatic micro-sprinkler irrigation system. The soil moisture levels are closely monitored and adjustments made to the watering schedules to optimise growing conditions.