Author(s): S. MONDAL GHOSH, A. GOPE AND G. CHAKRABORTY

Abstract: A field experiment was carried out at Central Research Farm, Bidhan Chandra Krishi Viswavidyalaya, Gayeshpur for two years in a row, in 2018 and 2019, to manage the rice root-knot nematode Meloidogyne graminicola using some bacterial bioagents, Bacillus pumilus, Bacillus subtilis, and Pseudomonas fluorescence by soil application in nursery beds. The chemical nematicide carbofuran was employed as a standard check. The experiment was designed in a Randomized Block Design, with five treatments reproduced six times. The experiment's results demonstrated that all treatments outperformed the untreated control in terms of seedling height, number of galls at transplanting, root knot index, soil and root nematode population at harvesting, and yield. Pseudomonas fluorescence surpassed other bacterial bioagents, yielding 1.26 t ha^-1 in 2018 and 2.72 t ha^-1 in 2019. However, in terms of incremental cost benefit ratio (ICBR), carbofuran treatment was the most effective, followed by bacterial bioagents.

DOI: 10.22271/09746315.2023.v19.i3.1748

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