yam prevention

i was pulling up plants and turning over soil in preparation for some planting on campus today and as a part of that preparation i picked up 638 chinese yam aerial bulbs off the ground around the vines ( and i stripped as many of those remaining on the vines off as well as i could...so 900+ bulbs...know anyone who wants to start a plantation? almost all perennial seem to be invasive ) and put them in a five gallon bucket...so that's a lot of yams i won't have to cull out of the garden next spring...did i get them all? hardly...they come in a range of sizes and i doubtlessly missed some of the smaller ones...they will become plants...and i will pull them up...part of the job.