natural intruder ( insect or animal). Examples include mushrooms and other
fungi, (which are indicators of a healthy environment), frogs lizards squirrels and other animals trying to survive due to our destruction of their environment.
spider webs from spiders controlling insect
populations should be left alone .Nature benefits us in most cases and we need to be less "sterile" in maintaining our yards and more accepting of the diversity
in our natural environment. How many insects have you seen in your back yard lately - another indicator of a healthy or unhealthy environment! The predators of insects are found in various locations on plants, including underground as well as nearby in other plants
fungi that under some conditions, such as high humidity or high pest
abundance, these naturally occurring organisms may multiply to cause
disease outbreaks or epizootics that can decimate an insect population.
Some pathogens have been mass produced and are available in commercial
formulations for use in standard spray equipment. These products are
frequently referred to as microbial insecticides, biorational, or bio-insecticides.. Formulations of the bacterium, Bacillus thuringiensis or Bt, for example, are widely used by gardeners and commercial growers for the control of caterpillars. Most insect pathogens are relatively specific to certain groups of insects and certain life stages. One of the advantages of the microbial products is that they do not affect beneficial insects and none are toxic to wildlife or humans. The disadvantages being that to be effective, most microbial insecticides must be applied to the correct life stage of the pest, and that you must understand the target pest's life cycle. Microbial insecticides are unlike chemical insecticides because they can take longer to kill or debilitate the target pest. Some microbial insecticides must be eaten by the insect to be effective, consequently, good spray coverage is important.
Microbial insecticides are compatible with the use of predators and
parasites, which may help to spread it throughout the pest
population. Beneficial insects are not usually affected directly because
of the specificity of a microbial product, but some parasitic insects may be
affected indirectly if too many hosts are killed.
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