Soil Sampling in Viticulture

When sampling soil from season to season in the vineyard, consistency and method are vital for reliable results.

Some often overlooked elements of sampling are

  • Sampling depth is critical
    The standard sampling depth for vineyards is 0-15 cm.   Because most of the soil carbon and soil nutrients are found in the top few cms ,  if you take a shallow sample eg 0-10 cm sample (because the ground was hard)  you will get a higher carbon and higher soil fertility reading than if you took a 0-15 cm.
  • Getting a representative sample is important
    The soil chemist in the laboratory may only use 10 grams of soil for testing soil carbon or soil pH, and remember this 10 grams is meant to represent potentially  2000 tonnes of soil in your vineyard, so taking a representative sample is important.    Generally 25-30 cores of soil.
  • Using the same laboratory
    Using the same lab each time you monitor, will also reduce variability. We use Ag-Vita labs in Tasmania. All of our customers are in phylloxera areas, all soil samples we take must go to a quarantine approved laboratory.  There are very few of these labs in Australia.  A phylloxera permit is required to go with the soil samples.
  • Monitoring over time
    To reduce variability in results over time you could sample the same block every 3-5 years, and even the same rows. Eg Down row 163 back up Row 148.
Soil sampling around vines

Contact us for your soil sampling needs.