Evaluation of two formulations of the fungicide mixture azoxystrobin and metalaxyl-m against four soil borne diseases

الملخص EN

Two formulations of azoxystrobin + metalaxyl-M, Premium© 39.1% SC and Uniform© 44.5% SE were evaluated in vitro by food poisoning technique against Fusarium solani, Fusarium oxysporum, Rhizoctonia solani and Sclerotium rolfsii.

These fungi were isolated from infected tomato plant and were identified.

Data indicated that IC₅₀ (mg/L) of Premium was 32.1, 2.5, 1215.5 and15.2, as well as for Uniform was 40.6, 5.4, 84.4 and 80.7 on F.

solani, F.

oxysporum, R.

solani, S.

rolfsii, respectively.

 The obtained results showed that the efficiency of the Premium against F.

solani, F.

oxysporum and S.

rolfsii was significantly more toxic than Uniform, while R.

solani was significantly more sensitive to Uniform although both formulations have the same active ingredient.

It may be concluded that the difference in the efficacy may be due to the difference in the type of the formulation between SC and SE.