I've been playing around with the idea of planting dutch white clover as a permanent living mulch as it only grows 6-8inches tall, is perennial and fixes nitrogen. However, if the cover crops must be killed in order for the fixed nitrogen to become available, I might consider an annual or winter-killed clover.
R Scott wrote:Clovers can share while alive, but it is not the hundreds of pounds per acre of a cover crop turned unto the soil. An occasional mow or scythe (chop and drop) will release a lot of N without killing the clover.
exactly the answer i was looking for. thank you.
Dale Hodgins wrote:My red alder trees are not legumes, but they produce more nitrogen than clover would. The leaves fall in October and November but the tree comes to life again in March.
I imagine alder wouldn't play well with sun-loving crops though. Low growing clover wouldn't compete for sunlight.