Management of root-rot disease complex through antagonists and chemicals
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Authors
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T.K.S. LATHA, E. RAJESWARl and V: NARASIMHAN
Department of Plant Pathology. Tamil Nadu Agricultural University. Coimbatore 641 003
Keywords:
Blackgram root rot, Macrophomina phaseolina, Heterodera cajani, disease complex, managementAbstract
A field trial was conducted on Vigna mungo to study the effect of antagonists and chemicals on root rot disease complex caused by Macrophomina phaseolina and cyst nematode Heterodera cajani. Among the nine treatments tested, a combination of fungicide (carbendazim) as seed treatment (2 g/kg of seed) with a nematicide (carbofuran) as soil application (3.3 kg ai/ha) was the most effective in reducing root rot incidence, nematode population and significantly increasing pod yield. Among the biocontrol agents, a combination of Paecilomyces lilacinus with Trichoderma viride and Pseudomonas fluorescens as seed treatment resulted in less root rot incidence, nematode population and more pod yield than other treatments.
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