Published on Organic Gardening (http://www.organicgardening.com)
Regularly incorporating organic matter (compost, cover crops, etc.) into soil improves its tilth—physical condition and workability. A soil with good tilth drains well and is easy to cultivate, conducive to seed germination and root growth, and resistant to crusting. Learn more secrets to sowing success.
Links:
[1] http://www.organicgardening.com/successful-planting-add-organic-matter-380
[2] http://www.organicgardening.com/learn-and-grow/compost-ingredients
[3] http://www.organicgardening.com/learn-and-grow/cover-crop-basics
[4] http://www.organicgardening.com/learn-and-grow/secrets-successful-planting