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Acid soil management: 5 cm rule for soil pH testing – GRDC (Podcast)

This GRDC podcast outlines the 5 cm soil pH testing rule to identify subsurface acidity and to guide targeted lime use. Interviews with researcher, Mark Richards and grower, Andrew Lord, highlight improved yields, input efficiency and successful pulse crop establishment following deep amelioration. The practice enables more accurate diagnosis and treatment of acid layers. This podcast series is also available on Apple Podcasts and Spotify Podcasts (28 February 2024) [10:40]. While focused on the northern region, the information is applicable across Australian cropping areas. #

  • Audience: RSP, tertiary students, landholders, SFSG, consultants
  • State: NSW, QLD
  • Author/Editor: M Richards and A Lord
  • Publisher: GRDC
  • Resource Type: Podcast
  • Copyright Year: 2024
  • Not Provided
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Resource Last Updated: August 18, 2025

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