Streptomycin was first isolated in $1944-45$ by
Leeuwenhoek
Burkholder
Alexander Fleming
Waksman
(d) S.A. Waksman ($1944$) discovered streptomycin from the bacterium Streptomyces griseus.
First bioinsecticide developed on commercial scale was
Cochineal insect has been used in checking the wild growth of
Transgenic crop developed to tolerate herbicides is
Concept of sustainable agriculture lies in
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