ANSI A300 (Part 2)-2011 Soil Management a. Modification, b. Fertilization, and c. Drainage

The A300 Part 2 standard addresses the following items.

• Soil Management a. Modification section
  • Evaluating site soil condition practices
  • Managing soil organic matter content practices
  • Incorporation of soil amendments
  • Compaction – prevention and mitigation practices
  • Mechanical soil loosening
  • Surface application of organic mulch
    
    
• Soil Management b. Fertilization section
  • Soil reaction (pH) adjustment
  • Fertilization practices
  • Calculations for fertilization area
  • Fertilization applications

Note: The Fertilization section recognizes and provides standards for basic fertilization methods:

• Surface fertilization: The application of dry fertilizer on the soil surface.
• Subsurface dry fertilization: The application of dry fertilizer below the soil surface.
• Subsurface liquid fertilizer injection: The application of liquid fertilizer below the soil surface.
• Alternative fertilization: A number of techniques that may include spraying a liquid directly on the foliage, injecting a liquid directly into the plant, or implanting a solid directly into the plant.

Advisory Notice: Surface application shall not be made where surface runoff is likely to occur.

• Soil Management c. Drainage section:
  • Mitigation of impenetrable layers
  • Mitigation/adjustment of surface drainage
  • Mitigation/adjustment of subsurface drainage

Read this article about specifying fertilization!

How to use Tree Fertilization Standards (PDF - 767 KB)  - a TCI magazine article written by Tim Johnson, chair of the A300 committee.