Review Weeds in the agroecosystem and its agroecological benefits as natural enemy hosts
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Abstract
populations are generally high in the crops; thus, if a group
of measures are not settled down for its handling, losses can
be higher than 25 % harvests. Even though it has been
demonstrated that weeds only cause a direct effect on crops
when they surpass the threshold in the critical period of
interference, the tendency is to constantly control them and
maintain the fields completely weeded. Today, one of the
elements which is known to contribute considerably to
increase the diversity of agricultural systems is passable levels
of weeds, that let the populations of herbivore organisms
diminish and the benefic insects increase. This work pretends
to approach some topics related with weeds, its handling, its
function in the agroecosystem and agroecological benefits,
besides deepening on its impact in agriculture and the weeds
as a reserve of natural organisms.
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