By Emma Hopkins
Farmers interested in planting cover crops to improve soil health now have an updated and expanded resource in the second edition of the Midwest Cover Crops Field Guide.
The pocket guide, released Monday (Sept. 22),is produced by Purdue University and the Midwest Cover Crops Council.
Growers plant cover crops for a variety of reasons and possible benefits. Cover crops can trap nitrogen left in the soil after cash-crop harvest, scavenging the nitrogen to build soil organic matter and recycling some nitrogen for later crop use. They also can prevent erosion, improve soil physical and biological characteristics, suppress weeds, improve water quality and conserve soil moisture by providing surface mulch.
The first cover crops guide was released in February 2012. The updated guide is in response to the increasing interest in cover crops in the Midwest and to requests for additional information.
"All this new information will help farmers better choose appropriate cover crops for their situation and better manage the cover crops they grow - all for greater potential benefit for their soils and cash crop growth," said Eileen Kladivko, Purdue professor of agronomy.
The updated guide features seven new topics:
- Getting started in cover crops.
- Rationale for fitting cover crops into different cropping systems.