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| Someone told me in an earlier post this week, in regards to the liquid collection tray at the bottom of my Worm Factory composting system, that the liquid is leachate and not "compost tea". I went back through the WF literature and read that this liquid, according to WF designers, is referred to as "worm tea", which can be used as a fertilizer, similarly to compost tea I believe.
Now, when I think of leachate, I normally consider a negative connotation referring to liquid waste, but since this liquid collection tray is simply collecting the runoff from the organic matter (food and paper scraps) I'm putting into my worm bin, I don't think this is a fair categorization. I'm wondering what other people think about this...what the difference is between "compost tea" and "worm tea" -- if any -- and any other thoughts on this topic. |
Follow-Up Postings:
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- Posted by folly_grows 10 SF by the Bay (My Page) on Tue, Mar 17, 09 at 18:00
| Jgore -- I was the one who said that leachate wasn't the same as worm tea. I'm not saying that giving it to your plants is bad for them, just that it is different from worm tea. Worm Tea/Aerated Vermicast Tea/AVT is brewed with molasses and air to promote microbial life. The leachate at the bottom of the WF is merely drippings from the trays. There are lots of discussions on this and other forums about how to make Tea. But there are also strong discussions about the usefulness of tea versus top dressing with VC. Search. Search. Search. One of the posts I found here after searching for AVT said: |
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| jgore, After I bought my WF and following the posts here, I have e-mailed WF and commented a.o. on their description of "worm tea". I got a reply and they admitted that the run-off is not worm tea, rather what is called leachate in the vermicomposting community. The name will be changed with the next printing. I agree with folly grows, if you've got leachate then your bin is too wet. You will get mite problems and smell. So, add dry shredded newspaper to soak excess liquid. The bin usually gets enough moisture just from the veggie/fruit scraps added. If I do get leachate, I dilute that with water (1:10 just to be safe it is not too strong)and water my houseplants with it. None have died so far. Otis |
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| Thanks both of you for your helpful responses. I'm glad I now understand what's going on here. It's unfortunate that the WF designers made such an obvious miscategorization. I had posted earlier too about my confusion regarding their measurement of 1/2lb. of food per 1lb. worms to the measurement I received with my worms themselves which said 1/2c. to 1lb. worms. I'm not sure which of these is correct either, but am just watching to see how quickly food disappears. It seems they aren't doing the best job... I'll keep digging through past posts for more information on tea. Thanks! |
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| jgore, To summarise: Compost tea - a mix of VC and water. Useful if you don't have leachate and want some liquid fertilizer. Worm tea - a mix of VC, water and molasses. It is brewed in the sense that hot water is used and it must be used almost immediately otherwise the benefit is lost. There is a lot of controversy regarding the benefits of creating and using worm tea. My person view is: "If in doubt, leave it out." Hope that clears things up. |
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