We haven’t had a good NORDO topic in a while, so what the heck, here goes- Flying into Walnut Ridge, AR (KARG), Rwy 18. Self announcing on CTAF. Nice lady comes on CTAF from FBO and lets me know there is a crop plane using 18 that just took off, is NORDO, but I should be fine as I’ll likely be landing before he gets back. I said thanks. The nice lady from the FBO also fueled me up, we chatted a while, I got some ice cream, stretched my legs, then off to the races again. Oh yeah, she said a bi-plane crop duster was heading there sometime soon, NORDO as well. That low wing duster had come and gone at least once if not more while I was there. He was airborne somewhere. I lined up for 18, launched and when I crossed the departure end I saw a bi-plane coming in on crosswind, to my right, heading west to east presumably to a left downwind. Not super close, but close enough where he turned on his spray for a second so I could see him, as we were headed for the same point in space. I had already seen him just before he did that and so I started a right turn past the departure end to avoid him and rocked my wings to say “I see ya”. I had to come back around to the left as I was departing north and wanted to stay in the left pattern. So 66% of the planes were NORDO. Maybe 80% of the operations in the 30-40 minutes I was there. No other comment. It is what it is. Be careful out there.