Tillage – Can it leave over 30 Percent Residue Cover?

Above: The residue remaining after cereal harvest with straw spread back on the field.

Leaving 30% crop residue has been proven to minimize top soil losses from wind and water erosion. But what does 30% soil cover look like? Do certain tillage implements leave less than 30% crop residue? Crop residue in the form of corn stalks or cereal straw, or green cover (growing crops or cover crops) are all effective ways to achieve 30% cover. In a demonstration at the Outdoor Farm Show in 2012 we learned that if we remove straw from a cereal crop and follow with any type of tillage we retain less than 30% residue. However, the tillage action stimulated a more uniform germination of volunteer cereals which increased total soil cover to well over 30%. The following photographs illustrate crop residue cover after tillage action on two differently managed field scenarios.




Cargill selling Ontario grain and crop input business to La Coop federee

After putting its grain handling and crop input operations in Ontario up for sale this winter, Cargill has reached a deal to sell the business, including its ownership in South West Ag Partners, to Quebec-based La Coop fédérée. The agreement includes 13 grain and crop inputs retail locations, as well as Cargill's 50 percent share of…Read more »


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