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  Industrial Hemp Variety Trials: Results from the Maaoupe trial site for the 2023-24 growing season quantity

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The industrial hemp industry in Australia is a growing sector with potential to make significant economic and environmental contributions. Interest in hemp production has grown due to its diverse applications, from food to sustainable materials, and the permitting of hemp seed foods for human consumption in 2017.

However, the industry faces several challenges, including limited agronomic data, variability in seed quality and inconsistent outcomes across regions and sowing times. These issues underscore the need for robust, region-specific research to inform growers and facilitate industry expansion.

This report presents the findings from the 2023-24 trial at Maaoupe, South Australia as part of the Industrial Hemp Variety Trials (IHVT) program, a nationally coordinated effort to assess industrial hemp’s performance across varying conditions. Conducted in the Limestone Coast region, the trial evaluated 11 varieties across two sowing times to generate critical data on grain yield, dry matter production and grain quality.

Key findings include: (1) short-season varieties, such as Henola and ECO-Excalibur, delivered the highest grain yields; Henola’s excellent dry matter production makes it a strong candidate for dual-purpose systems; (2) low germination rates in some seed lots led to higher sowing rates, reducing cost-efficiency for growers; and (3) significant differences in grain weight, oil content and protein content were observed, though growers might only be encouraged to address these factors if a price premium existed for higher-quality grain.

The results suggest Henola can be adopted for dual-purpose production, and ECO-Excalibur for later sowing, in the Limestone Coast region. Earlier sowing of Henola can maximise productivity. Additionally, establishing seed quality standards and introducing pricing structures that reward quality traits, such as high oil or protein content, can align grower incentives with market needs.

The Maaoupe trial exemplifies how region-specific, science-based trials can empower growers to optimise production while addressing industry-wide challenges. By building confidence among growers and fostering consistent supply chains, this work contributes to the sustainable growth of industrial hemp in Australia.