EWASH & TI Journal, 2020 Volume 4 Issue 4, Page 514-523 Environmental and Water Sciences, Public Health & Territorial Intelligence Env.Wat. Sci. pub. H. Ter. Int. J. ISSN Electronic Edition : 2509 - 1069 Acces on line : http://revues.imist.ma/?journal=ewash-ti/ H. BAHROUNI & al 514 Section : Environmental and Water Sciences Publication type : Full Paper Modeling of drift during the application of phytosanitary products on low crops : Literature review Modélisation de la dérive pendant l'application des produits phytosanitaires sur les cultures basses : Revue bibliographique Received 17 Nov. 2020 Accepted 30 Nov.2020 On line 31 Dec. 2020 HASSOUNA BAHROUNI 1 , HOUCINE BCHINI 2 , SANA BEN MERIEM 1 , ABDENNOUR SBAI 2 , AMOR BOUGHDIRI 3 , SABRI KANZARI 1 & MOHAMED ALI BEN ABDALLAH 1 (1) Université de Carthage / Institut National de Recherches en Génie Rural, Eaux et Forêt (INRGREF) / Rue Hédi Karray, BP 10, 2080 Ariana, Tunisie. Email : h.bahrouni@gmail.com; bahrouni.hassouna@iresa.agrinet.tn. benmeriem.sana@gmail.com,sabri.kanzari@gmail.com benabdallah_medali@yahoo.fr (2) Université de Carthage / Institut National de la Recherche Agronomique de Tunisie (INRAT), Rue Hédi Karray, CP 2049 Ariana, Tunisie. Email : houcine.bchini@gmail.com , sebeimoha@gmail.com (3) Université de Carthage / Ecole Supérieure d'Agriculture de Mateur / Route de Tabarka-7030 Mateur, Tunisie Email : amor.boughdiri@yahoo.fr KEY WORDS Pesticides, losses in the atmosphere, environment, droplets, prediction, evaporation. Abstract During the spraying of low crops, large quantities of pesticides are transferred from crop-growing areas to the atmosphere, by drift inducing environmental impacts, human health problems and economic loses. To better understand this drift phenomenon, spray emission modeling, in combination with field tests, could be a suitable solution but modeling stills the most used approach. Thus, the scientific community developed mathematical and computational models to describe the complicated interactions between spray droplets and its environment considering the different involved parameters. The final objective is to determine pesticide transport with few field tests. Most of the developed models are Lagrangian models that use the principles of fluid mechanics based on simplifying assumptions regarding the description of the kinetics of particles and the effect of turbulence on the behavior of the droplets. Existing drift models only consider the evaporation of the solvent, which is often water. They assume that there is a loss of pesticide by evaporation only if the drop reaches total evaporation. They also assume that the drops are isolated and that the effect of surface tension is neglected. Thus, evaporation is necessarily overestimated. Several results of those models show that drops smaller than 100 μm are the most sensitive to evaporation. This paper presents a bibliographic review describing some known drift models, particularly their calculation bases of evaporation, considering the diversity of hypothesis and drift principles characterization. MOTS CLES Pesticides, pertes dans l’atmosphère, gouttelettes, prédiction, évaporation. Résumé Pendant le traitement phytosanitaire des cultures basses, des quantités importantes de pesticides sont dispersées dans l'atmosphère par dérive, entraînant des impacts sur l'environnement, des problèmes de santé humaine et des pertes économiques. Pour mieux comprendre ce phénomène de dérive, la modélisation des émissions, associée à une approche expérimentale sur le