Pages from Workshop 4 notes-LT-PHOEBE (1).pdf

Holbrook Landcare Network Healthy Soil Group Soil Acidity

Update on the learnings so far:

Key messages

  • Target pH needs to be 5.5 (not 5, not rule of thumb 2.5T every 10 years or 8 years) Current district rates are maintenance rates only – not getting subsoil amelioration (how many of you have subsoil trend data? )
  • Presence of stratification and implications for sampling – Traditional 0-10cm probe sampling may not be detecting acidic layers – your lime rates might not be enough because of this, and acid sensitive plants struggle (lucerne, seedling phalaris, barley, faba beans etc)
  • Are you getting the most out of your soil testing regime? Whole paddock vs zoned

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