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“No-till’ Definitions<br />
• General rule of thumb: direct seeding with no more than<br />
30% surface area disturbance (3” wide openers on a 10”<br />
shank spacing)<br />
• Strip till is allowed with no more than 30% soil<br />
disturbance (10” wide tilled strips on a 30” row spacing,<br />
no in-crop row cultivation, but separate knife fertilizer<br />
applications are allowed<br />
• Disc type openers in most any row spacing are least<br />
disturbance, but are not required.<br />
• Guidelines reference NRCS STIR ratings of 20 or less
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