[en] Surfactants are nowadays very useful additives to improve the effectiveness of phytosanitary treatments. They contribute to change the types of impact and thus the amount of spray retained by the leaves of the treated plant.
We performed tests of retention on whole barley plants on BBCH 12 stage and small pieces of barley leaves at the same stage of growth. Spraying was done in three ways: water without surfactant, water with Break-Thru S240 and water with Li700.
The three slurries of fluorescein contained in an amount of 0.2 g / l. Fluorescein retained by the leaves in both cases is then measured by a spectrofluoremeter.
The retention tests on whole plants show that it is tripled by the first surfactant and doubled by the second. By cons on small pieces of barley leaves, the amount was increased by the use of surfactants but not to the same scale.
This study concluded that the use of surfactants in spray pesticides may increase the amount of retention as a function of leaf area and the surfactant used.
Disciplines :
Agriculture & agronomy
Author, co-author :
Boukhalfa, Hassina dite Hafida ; Université de Liège - ULiège / Université Mohamed Khidar Biskra - Algérie > Sciences et Technologie de l'Environnement > Mécanique et Construction > Doct. sc. agro. & ingé. biol.
Massinon, Mathieu ; Université de Liège - ULiège > Sciences et technologie de l'environnement > Mécanique et construction
Lebeau, Frédéric ; Université de Liège - ULiège > Sciences et technologie de l'environnement > Mécanique et construction
Language :
English
Title :
STUDY OF THE EFFECT OF TWO SURFACTANTS ON SPRAY RETENTION BY BARLEY LEAVES
Publication date :
08 February 2013
Event name :
8th National Symposium on Applied Biological Sciences (NSABS2013)
