|Grazing rye green manure|
The legumes have these bacteria and fix nitrogen from the air producing nutrients, if the whole plant is dug in. 30% of the fixed nitrogen is in the root and 60% is in the stem and leaves. Where the other 10% goes I don't know. So in the legumes, I have used tares, lupins and am now using field beans.
I use ordinary lawn grass seed as a green manure and, although this is not quite as good as grazing rye, it is a fairly good second choice.
|Caliente Mustard Green Manure|
The season for planting green manures is well past, although I was thinking of putting broad beans in the brassicae bed and hoping that they would produce something before I put the cabbage out in May/June time but I doubt very much if that would be successful.
Green manures will go in on any ground where crops have been harvested.