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Utilisation de micro-doses de sucres en protection des plantes

Abstract : Increasing interest is devoted to relationships between sugars (glucose, sucrose, fructose, raffinose…) and resistance of plants to biotic and abiotic stresses, resulting in the concept of “sweet immunity” or “sugar–enhanced defense”. The objective of the project USAGE (2012-2014) was to test the effect of spraying low doses of sugars on plants to control various bioagressors.The project brought together 43 trials (6 in orchards, 12 in vineyards, 25 with various vegetable crops) including 38 in field conditions. An additional objective was to evaluate the possibility to combine foliar application of sugars with reduced doses of pesticides while maintaining the quality of agricultural production. Some potential of sucrose and fructose was observed for the control of various parasites, at low to moderate pest pressures and I. Arnault et al. 2 Innovations Agronomiques 46 (2015), 1-10 on perennial crops (vineyards, arboriculture). Thus, the codling moth damage was reduced by 55% in organic orchards with both sucrose and fructose. Fructose sprays have reduced the amount of copperbased treatments used to control downy mildew in organic vineyards. The results contributed to the approval of sucrose as a basic substance (EU Regulations No. 916/2014 of the Committee on 24 August 2014).
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Ingrid Arnault, Marc Bardin, S Ondet, Arnaud Furet, Marc Chovelon, et al.. Utilisation de micro-doses de sucres en protection des plantes. Innovations Agronomiques, INRAE, 2015, 46, pp.1-10. ⟨10.15454/1.4622659371993286E12⟩. ⟨hal-02638993⟩

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