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Extra Virgin Olive Oil Savantes Tasting Programme, New York, USA

New York, 31 October to 1 November, 2019

Savantes Introduces Enhanced ‘Frequent Tasters’ Recognition for Associates

Silver. Gold and Platinum Associate Savante Certificates will now be awarded.

Growing and processing olives and olive oil...

Information about planning, planting, pruning, picking and processing olives and olive oil!

Melbourne Extra Virgin Olive Oil Savantes

21st to 22nd November 2019 - Tasting the world's best extra virgin olive oils!

Olives are grown in a variety of soils and conditions. Therefore customised management of tree nutrition is required.

The four tools for optimal nutrient management are:

  • Observation of trees and environmental conditions.
  • Soil and water analysis.
  • Leaf analysis.
  • Recording.


Visual symptoms should be used as an aid to interpreting soil and leaf analyses:

  • Look for abnormal symptoms in foliage or growth.
  • Look for significant variations in yield.
  • Observation can suggest deficiencies of:
    • nitrogen,
    • potassium, and
    • boron.

Leaf Analysis

Initial leaf analysis should be undertaken when the trees are two years old, then on a regular basis. A standard analysis will cost approximately $70.

  • Summer (January) is the best time to undertake leaf tissue analysis.
  • Levels of most nutrients stabilise in the olive leaf during January and February.
  • Standards for optimum leaf nutrient concentrations are given in The Olive Handbook.
  • For the analysis:
    • Remove 4 mature leaves per tree from the middle of current season non-bearing shoots from 25 trees.
    • Trees should be of similar size and on a single soil type.
    • Different samples should be taken for widely differing soils.
    • Wrap leaves in paper bags or newspaper, NOT plastic or other material which will make them sweat.
  • If testing for Boron, mature fruit samples may be more reliable than leaf samples.

Soil and Water Analysis

  • Soil and water analysis should be undertaken during site selection and deficiencies rectified during site preparation.
  • This should be followed by continuous analysis at two-year intervals.
  • Reliable standards for soil mineral nutrients for fruit trees are lacking so analysis should be considered in conjunction with leaf analysis.
  • A standard soil analysis should provide information on the following soil conditions and nutrients and will cost approximately $70.
    • pH - indicating soil acidity
    • salt - indicating salinity levels
    • moisture
    • organic carbon
    • total nitrogen %
    • phosphorus %
    • potassium %
    • sulphur %
    • calcium %
    • magnesium %
    • copper mg/kg
    • zinc mg/kg

Fertiliser Application

  • Spreading fertiliser well beyond the root zone is a waste.
  • Cover the entire present root zone.
  • Extend slightly beyond root zone to allow for new growth.
  • Generally, the diameter of the root zone is @ 2-3 x the foliage area.

The following table suggests nitrate application for spring plantings:


Year Month Ammonium Nitrate per Tree Root Zone Diameter
1 Oct/Nov/Dec 42gm 0.6m
1 Jan 50gm 0.9m
1 Feb  50-63gm 1.2m
2 Aug 85gm 1.8m
2 Nov  110gm 2.1m
2 Feb 120gm 2.7m
3 Aug 125gm  3.4m
3 Nov 140gm 3.7m
3 Feb 150gm 4.3m
4 Apply fertiliser in response to leaf and soil analysis.