Brandon Greer wrote:I'm wanting to add nitrogen fixers for obvious reason but have several questions.
1. How do they actually work? Does their mere existence in the guild spread nitrogen to the other plants underground through their roots or must they be chopped and dropped?
Brandon Greer wrote:2. One thing I plan to have is a perennial clover to serve as a living mulch as well as a add nitrogen. If I do some form of chop and drop using another plant (comfrey for example), will dropping over the clover smother and kill out the clover? In other words, does chopping and dropping in an area with living mulch work?
I can give a tentative answer to the sharing question from my own personal observations. Was with my son out in the yard when I spotted a patch of clover. The grass in the immediate area was greener than the rest of the lawn. Got down on my knees to explain nitrogen fixation to my son. His reaction, was "yeah Dad, uh-ha sure". What I could see though was that only those blades of grass immediately adjacent to the clover was greener. One cm away and the effect dropped to zero.
dirk maes wrote:First science: nitrogen fixing bacteria that live in symbiosis with plants turn atmospheric nitrogen into ammonia witch than comes available to plants in one form ore other.
Is al the ammonia consummed by the host plant? Who knows.( no science )
I assume part of the ammonia comes available for neighboring plants .