MANAGEMENT OF BACTERIAL WILT OF BRINJAL BY USING SOME CHEMICALS AND BIO-AGENT

Abstract

The experiment was conducted to evaluate the efficacy of different chemicals and bio-agent for the management of bacterial wilt disease of brinjal caused by Ralstonia solanacearum during the period of 2019-2020. Seven treatments viz. T 0 = R. solanacearum (control), T 1 = R. Solanacearum + Goldton 50WP @ 0.2%, T 2 = R. Solanacearum + Tricost 1%WP @ 0.3%, T 3 = R. Solanacearum + Nirvoy 10SL @ 0.15%, T 4 = R. Solanacearum + Bactroban 20WP @ 0.2%, T 5 = R. Solanacearum + Kasumin 2% liquid @ 0.05%, T 6 = R. Solanacearum + krosin AG10SP @ 0.05% were used as soil drenching. All the transplanted seedlings were inoculated with cell suspension of R.Solanacearum (10 8 cfu/ml). The effect of the different treatments have shown significant variation compared to control in respect of wilt incidence, yield and yield contributing characters. The disease incidence differed significantly among the treatments ranged from 13.9- 80.6%. Minimum disease incidence 13.9 % was observed in treatment T 6 (Krosin AG10SP). However, the highest disease incidence (80.6%) was observed in T 0 (Control). In case of all the plant growth parameters, treatment T 6 i.e Krosin AG10SP (Streptomycin sulphate 9% + Tetracyclin Hydrochloride 1 %) was found as the best one. The highest yield 27 kg/plot was recorded in case of treatment T 6 (krosin AG10SP) followed by T 2 (Tricost 1%WP) 16.7 kg/plot. The lowest yield was noted in T 0 (control) 5.2 kg/plot. Among the treatments T 6 (Streptomycin Sulphate 9% + Tetracyclin Hydrochloride 1%) was found to be effective for the management of bacterial wilt of brinjal that increased yield by 410.9 % over control followed by T 2

(Tricost 1%WP) that increased yield by 216.2 %.