Evaluation of the nematicidal effects of a biotechnological product (abamectin) on Meloidogyne incognita, root-knot nematode infecting cowpea plants.

摘要

Six different levels of abamectin 1.8%, i.e. 50, 100, 200, 400, 800 and 1200 ppm, were added to soil infected with the root-knot nematode (Meloidogyne incognita) and planted with cowpea under greenhouse conditions. A significant (p<=0.05 and 0.01) reduction in nematode criteria was found compared to untreated control. Data showed a clear correlation between increasing of abamectin concentrations and the percentages nematode reduction in roots and soil. The higher concentrations (200, 400, 800 and 1200 ppm) showed 100% nematode reduction. However, an adverse effect was observed on plant growth parameters. Plant growth criteria improved under the 50 and 100 ppm treatments..