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Hot & Bothered... over compost questionsOct 29 '01 Write an essay on this topic.
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The Bottom Line Don't waste your money! Equally effective solutions are available for a lot less money.
Commercial compost activators are fine, but there are a few other options available that give the same results, often for quite a bit less money. Composting is a process of accelerated decomposition. The work is done by a myraid of fungi, bacteria and other microorganisms that break down bulk items into a form that's perfect for improving soil structure (tilth). There are many different types of microorganisms at work; some are active at high temperatures, some a mid temps, and some at low temps. A common misconception is that if a compost doesn't heat up, it's not working. Not true. Decomposition works at all temperatures, but it's certainly quicker at high temps. The heat comes from the rapid activity of the microorganisms in response to a high level of nitrogen from the "greens" in the pile. High temperatures in the compost are important. The heat helps to break down weed seeds and destroy diseases and pathogens that may be in the composting material. Ideally, your compost will heat up initially, then cool as the nitrogen is used up and the composting process finishes. The trick is to start with the correct blend of "greens" (nitrogen sources) and "browns" (carbohydrates) so when the nitrogen is used up, all the material is decomposed. Generally starting with a 50:50 mix, maintaining the correct moisture level, and turning to allow air to get in the pile will result in an excellent finished product. Compost activators mainly provide some of the microorganisms and a source of nitrogen. The same blend can be obtained easily and cheaply in your local area. There are billions of the necessary microorganisms in a shovelful of soil or finished compost, and high levels of nitrogen can be found in items such as manure or coffee grounds. My personal favorite source of nitrogen is coffee grounds. They are generally available from restaurants or coffee houses,are normally free, and provide an excellent source of nitrogen for the compost or worm bin. They also don't require a truck! Manures also work very well if you have access to horses, chickens, rabbits, or other livestock. Different manures have different levels of nitrogen, but always remember to completely compost any livestock manures you collect. Many have parasites, pathogens, nematodes, or other nice little creatures you don't want to add to your gardens. Composting will normally take care of those problems. There are many different methods of composting: sheet, pit, bin, pile, worm, etc. Each has it's place, but a good blend of greens and browns to begin with and a little technique will do a lot more toward getting a good finished compost than any commercial activator.  |
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