I think, as a farmer, you have to make your own business decision on what you want to do. There are people who are organic farmers in Huron—Bruce, and they would tell you that their model is the best. Then there are conventional farmers, who have different crops, and use Roundup and fertilizer sprays, pesticides, herbicides, etc. I think either one is perfectly acceptable. It's your own business model.
Even on an organic farm that wouldn't use the sprays, they will go up and down their crop rows with tractors and modified equipment to keep the weeds off the ground. They're still using combustion engines to maintain the integrity of their crop in the field.