ABSTRACT
Assessment of the capability of Geranium herbarum escence in control of fungal contamination rainbow trout eggs. Experimental study. About 16 kg eggs of 3-4 years old Oncorhynchus mykiss brooders [232464 eggs]. The effects of this escence [1,5,10,25,50 and 100ppm] was daily evaluated until the eyed egg stage [about 18-20 days]. The positive control was treated with 1 ppm malachite green and the negative one assessed without any drugs. Analysis of Variance and t-student by SPSS. Culturing of affected eggs showed a contamination of Saprolegnia parasitica and Fusarium solani was obsereved. MIC valuse of Geranium escence against Saprolegnia and Fusarium were 4.8 and 18.2 ppm respectively. The geranium escence specially at 25, 50 and 100 ppm had significant difference compare to negative control [p<0.05]