GLYPHOSATE AS A MANAGEMENT TOOL IN CARP FISHERIES

Glyphosate was evaluated for use as a novel management tool to improve the efficiency of intensive carp (Cyprinus carpio) production in Pola nd. The survival and growth of the carp fry was greatest in ponds in w hich natural vegetation had been treated with glyphosate prior to floo ding, which favoured the natural development of food organisms. The yi eld was greater than merely flooding the vegetation or the alternative technique of maintaining a bare fallow prior to flooding. Using glyph osate as part of the pond management programme proved cost effective a nd had no deleterious effect on the carp fry or their food organisms.