Storage 2020 Innovation in fresh market sprout suppression of potatoes Tjaart Hofman Certis Europe BV hofman@certiseurope.com Innovation for fresh markets? Modern box stores Excellent climate control Excellent sprout control? Tools: Refrigeration CIPC Ethylene spearmint oil 1
CIPC usage in box stores Mind the evenness of residue distribution! Without positive ventilation: Apply at > 7 C Apply within 3 weeks after loading Maximum dose rate 18 g CIPC/tonne Positive ventilation 2
Is future of CIPC at stake? European Annex I re-registration by 2017. Large investments are being made now Review of dossier by European and national regulatory authorities during 2015. Is future of CIPC at stake? We cannot allow MRL exceedances! 3
Fogging a bulk potato store Fans will cause a continuous air movement during the application in order to achieve an even distribution of the fogging product Fogging practise Reduce fan speed Fogging practise 4
Box stores CIPC fogging: Positive ventilation! Box stores CIPC fogging: Positive ventilation! Not evident whether air dividers will qualify as positive ventilation! 5
Apply CIPC as early as possible! Total dose of 36 g CIPC is sufficient Treatment with Gro-Stop Ready (liquid CIPC product) at store loading Early application lower total dose of CIPC More efficient sprout control Less internal germination Apply CIPC as early as possible! Total dose of 36 g CIPC is sufficient Treatment with Gro-Stop Ready (liquid CIPC product) at store loading Early application lower total dose of CIPC More efficient sprout control Less internal germination 6
What else for sprout suppression? Ethylene Spearmint oil Approved in USA since Jan. 2013 Now already widely accepted for high efficacy in fresh and processing potatoes 7
AMVAC development code AMV1018 Naturally occurring compound Yoghurt, mushrooms, fish, ham, fermented soy Food additive (doses up to 20 ppm) No MRL! Discovered by Washington State University AMVAC acquired global license Certis distribution partner for W. Europe Jan. 2013: Registered in USA and Canada Spring 2015: Registration expected in W. Europe 8
Application by fogging SmartBlock Activity through vapour phase and by aerosol (fog) Good penetration between tubers inside boxes 9
Mode of action Acts on cellular membranes of young meristematic tissue Mature peel remains unaffected Dead sprouts removed by brushing/ washing Development NL: PPO Lelystad France: Arvalis Germany: Dethlingen UK: Potato Council 10
Sprout weight (g/kg) 12-2-2014 PPO Lelystad: sprout control on June, 2013 10 9 8 7 6 5 4 3 2 1 0 Untreated SmartBlock 1 application Storage temperature 5 C Spearmint oil every 3 wk Innovator Bintje Lady Christl 8 g/kg Shelf-life of potatoes, var. Bintje Stored for 3, 7, or 14 days at ambient temp. after unloading longest sprout length (mm) 45 40 35 30 25 20 Last application 12 wk prior to unloading spearmint Last application 3 wk prior to unloading 15 10 5 0 untreated SB 135 ml/ton hotfog Spearmint Biox M Days after unloading: T3 T7 T14 11
Maris Piper Melody 12-2-2014 Table potatoes. Storage 4 C, UK, 14 day Shelf-life test UK, Sutton Bridge. Season 2011-2012. Shelf-life testing Jan March June Jan March June SmartBlock 135 ml/ton Ethylene (10 ppm) 0.0 5.0 10.0 15.0 20.0 25.0 Mean max sprout length (mm) Application dates and dose rates: 135 ml on Dec 15 Ethylene 10 ppm from 15 Nov. Continuous. How will help you? A planned approach to sprout suppression New tool with particular relevance to Fresh market segment Box stores Can be used in combination programmes with CIPC and Maleic hydrazide 12
USP s of No residue tolerance (MRL) Very good distribution vapour, not a true fog Ideal for box stores New mode of action Based on a natural compound Certis Innovating Sprout Suppression 3-decen- 2-one Gro-Stop Ready Gro-Stop Fog 13