David Hula harvested the highest yield ever recorded in the national corn yield contest. The Charles City, Va., grower turned in a yield of 532 bushels per acre in the 2015 National Corn Growers Association contest.

Would landowners in your area rent ground to a no-tiller or strip-tiller for fewer dollars than to farmers using other conservation systems or even conventional tillage?

When we launched No-Till Farmer in 1972, paraquat was the No. 1 burndown herbicide. While it has lost much of its popularity to glyphosate, Mark Loux says it is one of those herbicides (marketed as Gramoxone by Syngenta) that could have been used much more in recent years to help control marestail and to interrupt the continuous glyphosate use cycle. The Ohio State University weed scientist says paraquat is most effective on small annual weeds.

With growing concerns about herbicide resistance, Australia no-tillers are looking at new non-chemical ways to control serious weed problems. While the 2013 no-till acreage in Australia was 43.7 million acres, there’s some thought that the country’s no-till acres have declined in recent years due to herbicide resistance worries.