The cumulative build-up of Pasteuria penetrans spores in root-knot nematode infested soil and the effect of soil applied fungicides on its infectivity

Abstract

The cumulative build-up of Pasteuria penetrans spores in field soil and pots over three crop cycles was investigated after re-incorporation of roots of cucumber and tomato plants infested with root-knot nematodes parasitised by P. penetrans. ln a pot experiment re-incorporation of tomato roots infected with root-knot nematodes parasitised by P. penetrans increased the spore population to a level at which nematode invasion was prevented. ln the field experiment, the second stage juveniles extracted from the soil after three crop cycles of cucumber had a mean number of eight spores attached. Neither spore attachment nor development of the parasite was affected if spores of P. penetrans were exposed to four commonly used fungicides.

Citation

Giannakou, I.O.; Gowen, S.R.; Melki, K.C.; Pembroke, B. The cumulative build-up of Pasteuria penetrans spores in root-knot nematode infested soil and the effect of soil applied fungicides on its infectivity. Fundamental and applied nematology (1998) 21 (6) 679-683.

The cumulative build-up of Pasteuria penetrans spores in root-knot nematode infested soil and the effect of soil applied fungicides on its infectivity

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