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Hot Compost as a Top Dressing

Posted by lonmower zone8 Western Oregon (My Page) on
Tue, Jun 5, 12 at 19:06

I would like to use some of my unfinished compost as a top dressing on some of my veges.

This pile as been working for 3 months (+) and remains fairly warm due to the amount of greens in it. I have a great source for UCG and have mixed browns...stopped adding...continue turning and adding some water...and somewhat surprised that it is still hot.

So my question is...Can I use this unfinished/nearly finished compost as a top dressing for tomatoes or corn or ???


Follow-Up Postings:

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RE: Hot Compost as a Top Dressing

will 2" of compost on the ground actually get hot? I thought it had to be a lot deeper than a couple of inches.


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RE: Hot Compost as a Top Dressing

What I would do is move that compost to the curing bin. The curing bin in which you don't add any more fresh materials. Start a new bin with fresh materials, and allow the curing to go on for a little while longer. Once it is not hot any more it's ready. If you mix with bagged browns that will cool it. If you mix it with native soil or turn it in very slightly even only a few inches it will be cooled. Once it is out of the bin and on the ground in just a inch or so it should not even get hot because you need critical mass to get heat. Maybe that is the problem the mass is too big, if you stopped adding and kept turning. I can never get my bins to maintain heat for very long, but they are kind of small in my opinion. A larger bin stays hot longer. Try taking some out a test in a small amount and see if it cools down right away.


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RE: Hot Compost as a Top Dressing

What I would do is move that compost to the curing bin. The curing bin in which you don't add any more fresh materials. Start a new bin with fresh materials, and allow the curing to go on for a little while longer. Once it is not hot any more it's ready. If you mix with bagged browns that will cool it. If you mix it with native soil or turn it in very slightly even only a few inches it will be cooled. Once it is out of the bin and on the ground in just a inch or so it should not even get hot because you need critical mass to get heat. Maybe that is the problem the mass is too big, if you stopped adding and kept turning. I can never get my bins to maintain heat for very long, but they are kind of small in my opinion. A larger bin stays hot longer. Try taking some out a test in a small amount and see if it cools down right away.


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RE: Hot Compost as a Top Dressing

  • Posted by lonmower zone8 Western Oregon (My Page) on
    Tue, Jun 5, 12 at 20:04

I have started another pile. The one in question is quite large (4'X4'X8') I have stopped adding materials and continue to turn.

I wonder because it continues to work...if there might be too much Nitrogen. If I put it around the tomatoes, I would keep it from the stems of the plants (maybe that is not a factor?)

Thanks for your responses and any further advice!


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RE: Hot Compost as a Top Dressing

  • Posted by pt03 2b Southern Manitob (My Page) on
    Tue, Jun 5, 12 at 20:12

I would not advocate putting immature compost around anyone's plants or into a garden that will be seeded very soon (within days) after incorporation. Why risk your plants?

I don't let my compost leave my farm until it has completed the heat phase and cured for an extended length of time. It works out to two summers for my product.

Lloyd


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RE: Hot Compost as a Top Dressing

On second thought waiting is good, why risk it?


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RE: Hot Compost as a Top Dressing

If, after 3 months, compost is still quite warm that says that the bacteria are still working on digesting the material and you will be able to see undigested and easily identifiable individual bits and pieces in that compost. You could use this as a mulch, if desired, but I would think it better to allow this compost to continue being worked by those bacteria rather then using it for mulch.
Spread around in layers of less than 4 inches thick will allow that compost to cool down, and as long as you can hold a handful without much pain it will not be a problem for your plants.


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