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Hugelkultur swale built - Need advice on aiding decomposition and planting perennials/fruit trees

 
Will Harvill
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Hello everyone, I recently constructed a swale hugelkultur and added a considerable portion of what I think are evergreen shrubs and conifer pine trees to clay-like soil. I live in Southeastern Wisconsin (zone 5b) and am seeking help for a few questions below. If you would like to see what I am up to and offer advice, please refer to these two video links first, so you know what I have in mind: https://drive.google.com/open?id=0B3HkpU13x-7fTDhZb3hObExNVFk https://drive.google.com/open?id=0B3HkpU13x-7fNnJQVFJIZEZ3cU0 - 1. Should any of the biomass we buried (evergreen shrubs or cone-bearing pine trees) have me concerned about alleopathy, and if so, what natural things can I add to the hugelkulturs to counteract the effects of alleopathy? 2. What fruit trees and nut trees would you recommend for this design? I imagine planting approximately six to eight fruit or nut-bearing semi-dwarf trees that are surrounded by herbaceous perennial plant guilds that are multi-functional and beneficial to the tree in the center. 3. Since I imagine the first year's growth will not be exemplary (due to the nitrogen being locked up in decomposing wood), is there anything in particular I should add to compensate for the anticipated nitrogen deficiency? 4. Is there anything that should really be included in this design that I might not be thinking about? I appreciate your advice and insight and look forward to learning more about what I can do to create a food forest.
 
Krofter Young
Posts: 9
Location: Baja Arizona
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Will - Good idea taking advantage of runoff from the neighbors.  Hope they don't use pesticides. 
Don't sweat the allelopathic possibilities.  The microbial cultures will break down any of that soon enough. Might want to plant some trees known to have relationships with the native mycelium of your region.  I also wouldn't sweat the nitrogen issue. That biomass will be decomposed just in time for the trees you intend to plant to make good use of it.  Also, excess nitrogen can interfere with mycorrhizal and mycelium development.  http://erdakroft.com/Erdakroftfarm/Blogs/Entries/2013/2/14_Mycelium_And_The_Plow.html
 
Will Harvill
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Krofter, thank you for the prompt response and your ability to alleviate my concerns. I haven't seen the neighbor using pesticides, but I will speak with him to verify. If he does use pesticides, maybe I can bribe him not to by offering a bounty of fresh food. I appreciate the link you provided as well; it reaffirmed the importance of mycelium.
 
I agree. Here's the link: https://richsoil.com/wood-heat.jsp
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