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<  Composting, Mulch, and Soils  ~  Compost test

PostPosted: Wed Apr 15, 2009 4:00 pm
Joined: Wed Apr 30, 2008 4:51 pmPosts: 307Location: Alaska
Decided to do a compost test with a few broccoli plants
Used 4" pots
2 in straight HM/sawdust compost
2 in straight garden compost, last years
2 in a 50/50 mix of the 2

HM/sawdust compost:
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Last years garden compost
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potted broccoli plants
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PostPosted: Wed Apr 15, 2009 9:03 pm
Joined: Wed Feb 08, 2006 6:02 pmPosts: 1927Location: PNW
The only thing I can think of that you might want to add is perlite or something to keep it from packing down and not getting any air to the roots.

I look forward to seeing the results.


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PostPosted: Mon Jul 27, 2009 3:24 pm
User avatarJoined: Mon Jan 05, 2009 2:48 pmPosts: 41
Do you have an update on how these did?


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PostPosted: Mon Jul 27, 2009 3:59 pm
Joined: Wed Apr 30, 2008 4:51 pmPosts: 307Location: Alaska
The straight HM compost did OK but required more watering. (for some reason the water runs straight thru & no much is absorbed) plants did well (3rd ranked). It seemed to have lots of sawdust still in it. (Now I cook it one more time with fresh grass clippings mixed in & that is helping)
The garden compost worked good, held water better but had some weed seeds. (1st ranked) for short term growth but seemed to use the nutrients up faster
The mix also needed watered more, few weeds & the plants did the best for longer term growth.
All 3 grew the seedlings about the same, mixed was just a little larger when transplanted to the garden, (very little difference). The root ball in the HM was bigger (almost root bound) & I don't know why.

Of the 3, the mixed (I felt) was just a little better overall. Not by allot. The soil just looked & felt better, no clumps & easy to use. I use it now for starting all new garden seed plants & it works great.
I'll mix some up & bag it, store it inside, for next spring seed starts.



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PostPosted: Tue Jul 28, 2009 9:25 pm
User avatarJoined: Mon Jan 05, 2009 2:48 pmPosts: 41
That's interesting. Did you have to feed any of them? Or were there enough nutrients in the mixes to keep them going until you planted them out?


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PostPosted: Wed Jul 29, 2009 3:24 pm
Joined: Wed Apr 30, 2008 4:51 pmPosts: 307Location: Alaska
That was the test.
No supplemental food.
I did not do anything but give them water.



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