The $50 price tag at the local hardware store was too much for what was left in my wallet after paying bills, so I came home, took a furniture clamp, clamped my very old electric drill to my wooden deck table, chucked a grind stone into it and put a wonderful new edge on my corn knife
With my $6 corn knife
I cut the plants off 3-4 inches from the ground.
A bell hog scraper is best for this work if you have or can find one, but a dull knife, an old corn knife
or a piece of broken jar is satisfactory.
To do the job by hand, use a machete or a corn knife