Management of Ralstonia wilt of tomato through microbes, plant extract and combination of cake and chemicals
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Authors
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J.P. SHARMA* and S. KUMAR
Abstract
The experiment was conducted on wilt of tomato (Lycopersicon esculentum L.), caused by Ralstonia solanacearum Yabuuchi, during post monsoon season for four consecutive years (1998-99 to 2002- 03) to record the impact of three groups viz; (i) microbes (ii) plant extract (iii) cake and chemicals on the yield of tomato as well as on the viability of inocula. The pooled data revealed that there was significant effect in all the treatments in reducing the primary inocula. Microbes viz; Glomus mosseae, Triochoderma viride and Azotobacter+Phosphobactrin resulted in reduction of primary inocula (41.4, 29.0 & 37.3% at 90 days over initial population, respectively) of Ralstonia solanacearum in soil and increased the yield by 141.1, 142.1 & 89.9%, respectively. Similar trend was observed in plant extracts viz; Asafoetida +Turmeric, Onion and Garlic in which the yield increase was noted to be 71.2, 71.2 & 64.4%, respectively over control. Karanj cake along with bleaching powder was more effective in reducing the apparent bacterial growth rate at flowering stage and increased the yield by 123.4% followed by bleaching powder and lime 107.5% over control.
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