Microbes
can be used to decrease the use of chemical fertilisers and
pesticides. Explain how this can be accomplished.
Microbes can be used to decrease the use of chemical fertilisers and pesticides. Explain how this can be accomplished.
Microbes
play an important role in organic farming, which is done without the
use of chemical fertilizers and pesticides. Bio-fertilizers are
living organisms which help increase the fertility of soil. It
involves the selection of beneficial micro-organisms that help in
improving plant growth through the supply of plant nutrients.
Bio-fertilizers are introduced in seeds, roots, or soil to mobilize
the availability of nutrients. Thus, they are extremely beneficial in
enriching the soil with organic nutrients. Many species of bacteria
and cyanobacteria have the ability to fix free atmospheric nitrogen.
Rhizobium is a symbiotic bacteria found in the root nodules of
leguminous plants. Azospirillium and Azotobocter
are free living nitrogen-fixing bacteria, whereas Anabena, Nostoc
and Oscillitoria are examples of nitrogen-fixing
cyanobacteria. Bio-fertilizers are cost effective and eco-friendly.
Microbes
can also act as bio-pesticides to control insect pests in plants. An
example of bio-pesticides is Bacillus thuringiensis, which
produces a toxin that kills the insect pests. Dried bacterial spores
are mixed in water and sprayed in agricultural fields. When larvae of
insects feed on crops, these bacterial spores enter the gut of the
larvae and release toxins, thereby it. Similarly, Trichoderma
are free living fungi. They live in the roots of higher plants and
protect them from various pathogens.
Baculoviruses
is another bio-pesticide that is used as a biological control agent
against insects and other arthropods.
Microbes play an important role in organic farming, which is done without the use of chemical fertilizers and pesticides. Bio-fertilizers are living organisms which help increase the fertility of soil. It involves the selection of beneficial micro-organisms that help in improving plant growth through the supply of plant nutrients. Bio-fertilizers are introduced in seeds, roots, or soil to mobilize the availability of nutrients. Thus, they are extremely beneficial in enriching the soil with organic nutrients. Many species of bacteria and cyanobacteria have the ability to fix free atmospheric nitrogen. Rhizobium is a symbiotic bacteria found in the root nodules of leguminous plants. Azospirillium and Azotobocter are free living nitrogen-fixing bacteria, whereas Anabena, Nostoc and Oscillitoria are examples of nitrogen-fixing cyanobacteria. Bio-fertilizers are cost effective and eco-friendly.
Microbes can also act as bio-pesticides to control insect pests in plants. An example of bio-pesticides is Bacillus thuringiensis, which produces a toxin that kills the insect pests. Dried bacterial spores are mixed in water and sprayed in agricultural fields. When larvae of insects feed on crops, these bacterial spores enter the gut of the larvae and release toxins, thereby it. Similarly, Trichoderma are free living fungi. They live in the roots of higher plants and protect them from various pathogens.
Baculoviruses is another bio-pesticide that is used as a biological control agent against insects and other arthropods.
