Friday, September 27, 2013

Hooray for Poop!

Hooray For Poop!
Alternative Sources of Organic Manure


Tried and True
Everybody loves poop. Well organic farmers all do at least, and most of them have one point used it in their growing operations. The most commonly used manures currently include Guano (Bat Droppings) and Worm Castings.

Guano is most easily found for purchase in a powdered form and has many uses and proven results. There are some negative aspects to guano though including respiratory issues from the powder becoming airborne during mixing and its price because it has to be shipped from overseas.

While not necessarily thought of as manure, worm castings are the end product of a worm's digestive system. This microbe and nutrient rich material is a must have for organic growers. Veganic growers are likely to really think out their morals before passing on this animal product.

Both of these manures are quite well known within the cannabis community and were likely considered new compared to horse, pig, and chicken poo at one time, but now lets take a look at some more interesting possibilities.

Small Mammals
Oooh that little guinea pig is soooo cute! At first it is at least until it starts squealing every morning at 5 A.M. But wait a minute don't manhandle the little guy just yet! With the right set-up you could have your very own manure machine and cute/annoying pet all in one!

It turns out small herbivorous mammals such as rabbits and guinea pigs make great manure. Unlike “hot” manures that need to be composted before use, rabbit and guinea pig excrement is ready to go right away. This is because the digestive systems of these creatures are special.

In a “normal” herbivorous mammal like a cow the microbes that break down their food are found in their stomach, or stomachs, breaking down what it can and excreting the whats left.

In rabbits and guinea pigs they must let the microbes gather on their already passed stool. After this they once again ingest the stool with the microbes so that it can properly metabolize in their digestive systems. Gross but true, and because of this their poo is very nutrient rich and chock full of beneficial microbes.

At the very least a rabbit or Guinea pen could be set up above a worm or compost bin for easy supplementation. Just make part of the bottom of the hutch or pen with appropriate sized wire fence and the excrement will just fall through to your collection device.

Invertebrates

Worms reign supreme here. They are arguably one of the most important animals as far as organic cannabis farming goes. An organic soil without worm castings is hard to pull off, though if you are using a good compost it likely contains them as well. For years many have taken advantage of the great humus like leftovers of these abundant creatures.
They also are great for aerating your soil and I recommend adding them to your pots as long as you reuse your soil (or grow outdoors), keep it moist, and don't use chemical or bottled nutrients.
While so far there have been no challengers to the great worm in this category there could be a contender if they were given some time and experimented with...

Millipeds. You knoe those little brown/black striped guys with hundreds of little legs. Turns out they are great composters as well, and highly under appreciated in the cycling of herbaceous materials into available nutrients.

I got a hold of Dr. Paul Marek from the University of Arizona, one of if not THE leading millipede expert in the U.S. I brought up my questions and this is what he had to say;

Yes, I've thought a bit about this. I think the best kind are NOT the Polydesmida (the flat-backed ones, e.g. http://www.apheloria.org/Paul_Marek/Images.html). You'd be better off with the Spirobolida, especially Narceus (if you're in the eastern U.S.) or Tylobolus (if you're in the western U.S.). It really depends on your location and dryness of your compost. Desert millipedes in the genus Orthoporus (different order Spirostreptida) would be good too but they're much more dry-adapted and will not do well in humid/wet environments. (These genera are common and you can see images of them by Googling their names.)
I had a stellar culture of Narceus (the very common brown millipede in the eastern U.S.) for a really long time while living in Chicago. They really liked moist oak leaves and pieces of wood. I had them in an aquarium and kept adding leaves and other detritus, and they would eat and eat and eat - decomposing and reducing the detritus level in the aquarium.
Millipedes in general are good for breaking down bigger pieces of organic matter (like big wood chunks) into smaller pieces so that earthworms and other decomposers can take the process even further. They'd probably complement the earthworms nicely if you have larger pieces of compost the earthworms take awhile to eat. (However, there is evidence of competition between earthworms, especially introduced species, and millipedes - e.g., work by Bruce Snyder). Another thing is that some millipedes (and Narceus seems to have a broader diet) are specialists and eat only one or a few types of decaying leaves.
I don't think a lot of folks have tried composting with millipedes! I'd love to hear your experiences if you give them a try!”

If any of those names are a little confusing your not alone. That aside it definitely seems like millipedes are something worth experimenting with.

Here are a few other links if you want to look further into Millipedes;

A site with a bunch of millipede varieties
http://shop.bugsincyberspace.com/Millipedes_c7.htm

-BDBuds


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