Final answer:
Sir John Bennet Lawes was one of the first advocates for the use of fertilizer on crops. He conducted extensive research and founded the world's first fertilizer factory, revolutionizing modern agriculture.
Step-by-step explanation:
One of the first advocates for the use of fertilizer on crops was Sir John Bennet Lawes. He was an English agricultural scientist who conducted extensive research on the effects of different fertilizers on crop growth. Lawes founded the world's first fertilizer factory in the mid-19th century and his discoveries greatly contributed to the advancement of modern agriculture.
Learn more about advocacy for fertilizer use on crops