The Experimental Farm worker on the horse drawn equipment is not creating a corn maze. Cutting the corn stalks was the first step in producing silage, a fermented fodder, which made it possible to provide cud-chewing animals such as cows and sheep with good food in winter when green forage isn’t available. Experimenting with animal feed resulted in the livestock program at the Farm being increased in the mid-1920s because of the need to utilize the food produced (plus the additional fertilizer was a useful by-product.) Modern equipment has reduced the manual (and horse) labour required in the production of silage, but cows haven’t noticed the difference.