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Which one of the following is an example of carrying out biological control of pests/diseases using microbes?
A
Lady bird beetle against aphids in mustard
B
Trichoderma sp. against certain plant pathogens
C
Nucleopolyhedrovirus against white rust in Brassica
D
Bt-cotton to increase cotton yield
Detailed Solution
Trichoderma species are free-living fungi common in root ecosystems; they are effective biocontrol agents of several plant pathogens.
The lady bird beetle is an insect, not a microbe. Nucleopolyhedroviruses attack insects, not white rust (a fungal disease). Bt-cotton is a transgenic plant.
The lady bird beetle is an insect, not a microbe. Nucleopolyhedroviruses attack insects, not white rust (a fungal disease). Bt-cotton is a transgenic plant.