Journal of Experimental Agriculture International

At the Potato Research Station, S. D. Agricultural University, Deesa, Gujarat (India) a field experiment was carried out from 2019–20 to 2021–22 to assess the effectiveness of the three most widely used bioagents against the potato common scab. Five distinct treatments were assessed: T₁ seed treatment with Trichoderma viride and soil application of Trichoderma viride enriched FYM; T₂ seed treatment with Pseudomonas fluorescens and soil application of Pseudomonas fluorescens enriched FYM; T₃ seed treatment with Bacillus subtilis and soil application of Bacillus subtilis enriched FYM; T₄ seed treatment and soil application with boric acid and T₅ served as the control. The pooled data result showed that T₄ i.e. seed treatment and soil application with boric acid, had the lowest disease incidence and severity (33.95% & 38.67%) of common scab. This was found at par to T₃ (39.06% & 44.40%) which involved seed treatment with Bacillus subtilis and soil application with Bacillus subtilis enriched FYM. Next best treatment was T₂ (47.04% & 46.93%), which was seed treatment with Pseudomonas fluorescens and soil application with Pseudomonas fluorescens enriched FYM. There was no significant difference between treatments in terms of tuber yield (t/ha).