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A novel non-chemical nematicide for the control of root-knot nematodes [An article from: Applied Soil Ecology] | Digital

by I.O. Giannakou (Author), D.G. Karpouzas (Author), Prophetou-Athanasi (Author)

List Price:

$8.95

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Available for download now

Binding:

Digital

Publisher:

Elsevier

Publication Date:

May 01, 2004

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Product Description
This digital document is a journal article from Applied Soil Ecology, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.Description: The efficacy of a novel bio-nematicide based on a strain of Bacillus firmus was investigated in a series of field and laboratory studies. The efficacy of this bio-nematicide was compared with standard fumigant nematicides and the bio-control agent Pasteuria penetrans. The impact of the application of this bio-nematicide on the size and activity of the soil microflora was also tested by measuring ninhydrin reactive N and FDA hydrolytic activity, respectively. The bio-nematicide was applied as powder at three dose levels 50, 70 and 90gwalkingm^-^1 and incorporated into the top 0-20cm of soil, which was naturally infected with Meloidogyne spp. In field studies, 1,3-dichloropropene and dazomet + sodium tetrathiocarbonate applications were generally superior to the bio-nematicide treatment. However, the recommended dose of the bio-nematicide (70gwalkingm^-^1) significantly suppressed the numbers of second stage juveniles at the end of the cropping season in comparison with 1,3-dichloropropene. The broadcast application of the bio-nematicide was more efficient than the banded application, regardless of the dose levels, and as efficient as the oxamyl + sodium tetrathiocarbonate combined application for the control of root-knot nematodes. In pot-experiments, the bio-nematicide was generally more efficient in controlling root-knot nematodes than the bio-control agent P. penetrans. Application of the bio-nematicide increased both the size and the activity of the soil microbial biomass, especially at the higher dose rates of 70 and 90gwalkingm^-^1. This was probably due mainly to the stimulation of the indigenous soil microflora caused by the addition of animal and plant extracts contained in the bio-nematicide formulation and partly to the added spores of B. firmus. Overall, the results indicate that the novel bio-nematicide offers a satisfactory and environmentally friendly solution for the control of root-knot nematodes.