@funnypharm That is not funny on the farm

Sorry I could not help myself

. If it is an insect larva, It looks like caterpillar/worm damage. You need to look under the leaves for worms. They may be exactly the same color as the plants so they are hard to see. The other thing is they may have eaten their fill and moved on?
Or IMPO rope abrasion from the net is more likely.