We were inspired to try no-tilling vegetables into cover crops after attending the Groffs’ field day in 1996. No-tilling warm season vegetables has proved problematic at our site due to the mulch of cover crop residues keeping the soil too cool and attracting slugs. We thought that no-tilling garlic into this cover crop of oats and Canadian field peas might be the ticket as garlic seems to appreciate being mulched.
One reason the no-till garlic may have been able to produce such a massive root system was due to the undisturbed soil being riddled with earthworm holes. Not wanting to destroy the beautiful soil structure created by the earthworms, we prepared the harvested garlic patch for planting a cover crop by fencing in our small flocks of laying hens to shred-and-spread the mulch of wheat straw in the no-till pathways. The birds also lightly tilled all this moisture conserving organic matter into the surface of the soil so a pass or two with the springtooth harrow was all that was necessary before seeding the winter cover of rye.
The essential requirements of a soil upon which to grow onions profitably are a high state of fertility, good mechanical condition, properties – that is, if it contains sufficient sand and humus to be easily worked, is retentive of moisture and fertilizers, and is capable of drainage – all other requirements can be met.