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The possibilities of organic fertilizers for Interior Landscaping

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Erwin Weening from DCM explains how potting substrate works and how DCM made it sustainable, long term and peat free.

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The possibilities of organic fertilizers for Interior Landscaping

  1. 1. Substrate & organic liquid fertiliser ERWIN WEENING
  2. 2. WHAT DO WE NEED FROM A SUBSTRATE FOR HEALTY GROWTH? • Enough water • Enough air • Enough mineral components • Enough organic matter • Fertiliser
  3. 3. WHY? O2 CO2
  4. 4. WHY?
  5. 5. WHAT HAPPENS WITH THE SUBSTRATE? • Less and less • and less
  6. 6. COMPOSTING Cellulose Hemi-cellulose Lignine
  7. 7. RETRACTION EFFECT OF PEAT MOSS
  8. 8. PEAT MOSS IS THE MAIN COMPONENT OF SUBSTRATES IN EU Source: EPAGMA 2009 % of peat used in substrate compositions per country % of peat used in substrate compositions in Europe Fractions of peat moss
  9. 9. Peat moss comes from peat bogs : A peat bog is an accumulation of fossilised moss in acid and very humid conditions Moss Sphagnum imbricatum Peat Bog drainage and harvest: Source: Lee Klinger PEAT MOSS IS THE MAIN COMPONENT OF SUBSTRATES IN EU
  10. 10. Different types of peat moss are used for horticulture: Slightly decomposed blond peat Highly decomposed black peat Different origins of Peat moss are used for horticulture in Europe: • Ireland • Baltic countries • Germany • Sweden PEAT MOSS IS THE MAIN COMPONENT OF SUBSTRATES IN EU
  11. 11. Characteristics Blonde Peat Black Peat pH 3,8 to 4,5 3,5 to 4,5 Cation exchange capacities 144 meq/l 166 meq/l Air retention at pF1 in % of volume 27% 17% Water retention at pF1 in % of volume 68% 75% Available water reserve between pF1 and pF1,7 in % of volume 30% 25% Density in kg / m3 150 to 250 390 to 600 Peat moss is an excellent growing media with many agronomic qualities: ADVANTAGES OF PEAT MOSS
  12. 12. One of the main drawbacks of peat moss is the ability to become hydrophobic when desiccation becomes too important (when water content goes below 50%): Measurement of hydrophobicity through contact angle measurements: INCONVENIENCE OF PEAT MOSS
  13. 13. Peat moss desiccation and hydrophobicity will provoke retraction in pots: Retraction is more important for: • Black peat comparing to blond peat • Fine peat comparing to coarser peat Increase of retraction risk Increase of retraction risk During desiccation, peat moss will loose a big part of its water retention properties. INCONVENIENCE OF PEAT MOSS
  14. 14. Several solutions exist: 1. Adding a wetting agent to the substrate 2. Incorporating other raw materials allowing better rewetting SOLUTIONS TO AVOID PEAT MOSS DESICCATION AND COMPOSING
  15. 15. Wetting agent is a surfactant: Wetting agent Peat substrate Aspertion Drip irrigation With wetting agent Without wetting agent All wetting agent are made of chemical compounds: ex: 1,2-benzisothiazol-3(2H)-one It is forbidden for organic production and only authorized for ornamental plants SOLUTIONS TO AVOID PEAT MOSS DESICCATION
  16. 16. Composted Pine bark: • Organic, sawmill by-product • Resistant to biodegradation (high % of lignin) • Rich of beneficial micro-organisms Pozzolan • Mineral, extracted from natural field • Completely resistant to biodegradation • Quite heavy (density = 1100 kg/m3) Perlite • Mineral, made from an industrial heat treatment • Completely resistant do biodegradation • Lightweight (density = 110 kg/m3) All raw materials presented are authorized for organic production SOLUTIONS TO AVOID PEAT MOSS DESICCATION OR COMPOSING Incorporating other raw materials into the mix: Materials allowing better water infiltration and aeration of substrate
  17. 17. Materials allowing better water infiltration and water distribution Wood fibre • Organic, made from an industrial heat treatment • Sensible to biodegradation (low % of lignin) • Good capillarity allowing good water distribution into the substrate Coco fibre • Organic, coconut industry by-product • Resistant to biodegradation (high % of lignin) • Good capillarity allowing good water distribution into the substrate Coco fibre is one of the best choice for substrate to enhance wettability and water distribution All raw materials presented are authorized for organic production SOLUTIONS TO AVOID PEAT MOSS DESICCATION OR COMPOSING Incorporating other raw materials into the mix:
  18. 18. DCM VISCOTEC® BLUE
  19. 19. DCM VISCOTEC® BLUE • FERTILISER - SUSPENSION OF COMPOUND FERTILISER NK WITH BIOSTIMULANT BASED ON AMINO ACIDS OF PLANT ORIGIN • 9 % TOTAL NITROGEN (N) of which 9 % organically-bound nitrogen (from amino acids of plant origin) 5 % POTASSIUM OXIDE (K2O) soluble in water • 45 % TOTAL AMINO ACIDS • • Product suitable for use in organic agriculture according to Regulations EC no. 834/2007 and no. 889/2008. • Certified by Control Union Certificiation, Dutch Input List (SKAL), FIBL (Germany).
  20. 20. DCM VISCOTEC® BLUE Innovative organic fertiliser High content of nitrogen (N) 9 % of vegetable origin (no ingredients of animal origin) Combined with 5 % potassium (K2O) Quick effect on growth as well as on colour of the plants Low salt index : mild effect on roots, Can be used continuously as well as periodically for adjustments during crop growth High purity Permanently stable composition Almost odourless
  21. 21. Conventional DCM VISCOTEC® BLUE Aloë - 25 May 2018 (15 weeks after potting) DCM VISCOTEC® BLUE : more volume and better rooting
  22. 22. DCM VISCOTEC® BLUE : more volume and better rooting Extra DCM VISCOTEC® BLUEPotting soil with base fertilisation Cyperus - 2 May 2018 (after 7 weeks)
  23. 23. • Innovative organic fertiliser • High content of nitrogen (N) 9 % of vegetable origin (no ingredients of animal origin) • Combined with 5 % potassium (K2O) • Quick effect on growth as well as on colour of the plants • Low salt index : mild effect on roots, • Can be used continuously as well as periodically for adjustments during crop growth • High purity • Permanently stable composition • Almost odourless DCM VISCOTEC® BLUE
  24. 24. Agronomical constraints Choice of good raw materials to assure: - Good wettability - Good water retention and distribution - Good Aeration - Less composting - Good pH and conductivity - Good fertiliser Technical constraints of the client - Pot size - Irrigation system - Fertilisation system - Type of plant -Duration of cultivation -Certification (ex: Organic production) Best Substrate CONCLUSION
  25. 25. THANK YOU FOR YOUR ATTENTION

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