Abstract Faba bean (Vicia faba (L).); is one of the important legume crops of the world, mainly it is cash crop and used as nutritious human food in the developing countries. It is important source of nitrogen in the human diet and corrects the important amino acid deficiencies in cereals. It is considered too low in productivity and chocolate spot (Botrytis fabae), is one of the economically important fungal disease. Seed treatment using chemical inducers is one of the management options used to control the seed and soil borne diseases. Therefore, this research was initiated to determine the efficacy of seed treatment chemicals on controlling chocolate spot and enhance productivity of faba bean. Six (6) seed treatment chemicals, one caw urine and untreated seed as control were used to manage chocolate spot at Welkayt and Tsegedie under field condition during the 2014/15 and 2015/16 growing season in randomized complete block design. Combined analysis of variance showed statistically significance difference among the treatments on the yield and disease reaction data observed. Minimum severity was recorded in Salicylic acid (31.31%) and maximum severity in the control (62.53%). Similarly the highest grain yield was obtained from the Salicylic acid treated seed (3198 kg ha-1) and the lowest grain yield was from Ascorbic acid (2231kg ha-1) non-significant with the control (2488 kg ha-1). Therefore, Salicylic acid and Apronstar were effective in managing chocolate spot in faba bean.

Keywords: Seed treatment, Chocolate spot, faba bean