Biopesticides are very actual and commercial matter in save
area products against
insect pest in the whole world. Among insecticides include
biological control agent's as are
e.g. entomopathogenic bacteria (Bacillus thuringiensis),
viruses (polyhedroviruses,
baculoviruses), fungi (Bauwessia spp., Metarhysium spp.),
entomopathogenic nematodes
(Steinernematidae, Heterorhabditidae) and protozoans
(Microsporidia, Nosema locustae).
Biological insecticides are rare some by features that the no
burden environment, in
comparison with chemical preparations till this time
plentifully used, because it occur in
environment naturally. Among benefits pair with their using
belongs to: they are thrifty to
environment (don't leave residue like chemical insecticides),
be safe to non targed organisms
and to humans, their application is simple, price is comparable
with chemical preparations,
they are in environment stable and don't cause resistance of
insect. Big importance obtain
rare mechanism effect, that is for any caregory of
bioinsecticides different.
Entomopathogenic bacteria and viruses produce toxins after
penetration into host, that the
induce septicaemia. Entomopathogenic fungi produce spats that
the conidias and intergrow
body host, whereby kills him and entomopathogenic nematodes
together with symbiotic
bacteria (Xenorhabdus, Photorhabdus) gesticulate guts host and
multiply there.
Meaning of biobiocides is enormous, but their exploitation
practically needs yet some
improvement. Important is also gain confidence consumers and
growers, to more and more
happened to restraint using poisonous chemical preparations.
On theoretic part tie together experimental part, in which I
auditioned methods of
isolation entomopathogenic nematodes from accidentally sample
soil.