JohnW - 1/7/2017 00:42 Some of the folks with hoe drills that have trouble getting through heavy wheat stubble have resorted to either using either a flail shredder or a big bat wing rotary mower on the heavy stubble. I think there is a rule of thumb that stubble has to be shorter than the row spacing for hoe air seeder. These guys tried using a "heavy harrow" but did not like the job it did, especially in hilly fields where the stubble was not even. The light areas ended up with little or no cover and they spread weeds. Horsch and Anderson favored wider row spaces and paired row openers to cut down on the actual row spaces. They also use coulters in things like corn stalks. In heavy stubble the single disc drill will do some hairpinning, especially if the straw is damp and the soil is soft regardless of disc sharpness. Also being able to double shoot and put down fertilizer when seeding is another advantage of a hoe drill. The best disc no-till drill, IMHO, that is able to seed into just about anything and put down fertilizer at same time is a Cross-Slot drill, but they are very expensive. http://www.crossslot.com/usa http://www.horsch.com/us/products/seeding-technology/zinkensaemasch...