Back Issue Vol: 25-3
We like to think that the bio-extensive approach to market gardening minimizes the risk of overloading the soil with nutrients because the fallow lands make it possible to grow lots of cover crops to maintain soil structure and organic matter rather than relying on large quantities of manure and compost. However, we are now seeing the consequences of ignoring our own farm philosophy when we resorted to off-farm inputs to correct a phosphate deficiency.
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.
For those not familiar with this tasty, nutritious weed, purslane can be a real challenge to manage in vegetable crops for a number of reasons. The seeds of this weed remain viable for many years in the garden, and generally do not germinate until hot weather — that is, after many of the market garden crops have already been planted. To make matters worse, this succulent plant often reroots after cultivation. Purslane also grows so close to the ground that it is impossible to control by mowing.