Management of nematodes in banana through bio-rationale approaches
2013
Seenivasan, N. | Manoranjitham, S. K. | Auxilia, J. | Soorianathasundaram, K.
Studies were undertaken to determine the efficacy of different bio-rationale approaches in managing the incidence of burrowing nematode, Radopholus similis and spiral nematode, Helicotylenchus multicinctus in banana under field conditions. The bio-rationale treatments included sucker dip with neem oil (1.5%), soil application of pressmud at the rate of 5 kg/plant, neem cake at the rate of 500 g/plant, vermicompost at the rate of 250 g/plant, growing marigold (Tagetes errecta) around the basin and growing coriander (Coriandrum sativum) around the basin which were compared with chemical check carbofuran 3G at the rate of 40 g/plant and untreated control. The study revealed the superiority of the marigold and neem cake treatments in reducing nematode population significantly and increasing banana bunch yield on par with chemical check with 18.3 -24.6 per cent over the untreated control. High rate of multiplication of bacterial feeding nematodes Rhabditis spp. and predatory nematode, Mononchus spp. were observed in these treatments. The economic returns were also higher with incremental benefit-cost ratio of 16.8 and 12.5 in marigold and neem cake treatments respectively.
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