Protocol to evaluate phyto-pharmaceutics products (PPP) deposition on banana crop from different types of ground based sprayers
Résumé
Banana crop is dramatically exposed to Sigatoga disease. Until now, the control was operated thru aerial application but national and European legislations banned aerial spraying on crops (Directive 2009/128/CE), arguing of human health and environment safety (PAN, 2004). The Optiban project was launched in 2008 to meet the requirement of the Food and Agriculture Ministry and the Groups of banana growers of Guadeloupe and Martinique (UGPBAN). It aims at improving a ground based system to replace aerial application (Rombaut, 2011) ; agronomic goal is to treat principally the upper leaves. For this purpose an original mistblower named Optiban was specifically designed. In parallel, other systems have been developed or adapted to spray from under the canopy (Knapsack sprayer mounted on ATV, low volume pneumatic sprayer). Up to now, there is no experience about the efficacy of these different systems for banana crop and a fast method to evaluate distribution of the product in the canopy appears to be an imperative requirement. This paper introduces protocols specifically designed for the evaluation of deposition on banana as well as results for different types of sprayers.
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