Efficacy of Pasteuria penetrans (ex Thorne) Sayre & Starr as seed treatment in controlling Meloidogyne javanica (Treub) Chitwood on three succeeding crops.

摘要

The bacterial parasite P. penetrans was tested in a greenhouse as seed treatment (at 3 g/100 seeds) against M. javanica in okra-cowpea-chickpea sequence. In the first crop of okra, yield increase was not significant, but 21% of the juvenile population at the end of the crop carried bacterial infection to the second crop. Yield differences became evident from the second crop of cowpea, which also left 46.5% less juvenile population and the incidence of bacterium increased to 29%. In the third crop of chickpea, besides 52.6% increase in yield, a population reduction of 57.7% was recorded, 50% of which carried bacterial infection..