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Air, energy, heat, and light are reasons why a compost heap is warm on the inside. Energy passes from herbivores to carnivores in their respective decomposition of dead and decaying plant and animal matter. That energy may take the form of heat, whose level is increased by the heap's exposure to heat and light and response to frequent turning of the alternating carbon- and nitrogen-rich layers.

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A compost heap is made up of organic materials. It can be vegetable or animal food material such as leftover food, vegetable or fruit peelings, mowed grass clipping, fallen leaves, wood or anything else organic. It will also have insects such as worms that live in the compost pile eating the material, digesting it, and excreting waste and bacteria that live off all the organic material in a compost pile. All this activity results in heat being generated in the compost resulting in a warm compost pile, even on cold winter days.

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8y ago
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8y ago

Actions of beneficial micro-organisms and flows of air, heat, and light are reasons why compost piles warm up. Decomposition may reach temperatures as high as 160 degrees Fahrenheit (71.11 degrees Celsius). The temperature reflects the energy flow from herbivores processing dead and decaying organic material and of carnivores preying upon other compost pile and soil food web members.

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7y ago

Decomposition is a reason why compost heaps are warm. Three types of bacteria make compost heaps warm through consumption and excretion of carbon- and nitrogen-rich recyclables. The breakdown of carbon serves as the hot energy source and nitrogen the food for mesophilic, psychrophilic and thermophilic bacteria.

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Q: Why do compost piles warm up?
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Why is fruit used in most compost piles?

Compost is used in most compost piles because it is edible by beneficial macro- and micro-organisms and because it rots easily.


Do compost piles stink?

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Why do some people have compost piles?

Facilitate aeration, layering and moisturization; save on equipment costs; and speed up decomposition are reasons why people have compost piles. Dark-colored, fresh-smelling, nutrient-rich organic matter can result from composting processes in containers, heaps, piles or pits. The choice depends upon what the compost-minded gardener has in mind in terms of buying or making bins, digging holes or moving around or over containers and pits.


Why should farmers spread compost or manure immediately instead of leaving piles on the soil?

Efficient use of resources and prevention of pest proliferations are reasons why farmers should spread compost or manure immediately instead of leaving piles on the soil. Piles can disperse with strong winds and dry up during severe droughts. They also may become homes for foraging wildlife.


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Yes, biodegradable melamine is safe for compost piles. The most famous use of the organic base in question is in tableware. Production methods make something that is toxic safely biodegradable and compostable.


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Do hoverflies nest in compost?

Yes, hoverflies nest in compost. The insects in question (Syrphidae family) may be attracted to compost heaps, piles, and piles and to uncovered compost bins and containers. They particularly will be attracted to carbon- and nitrogen-rich materials -- especially kitchen scraps and plant parts -- which are in the process of breaking down into dark-colored, fresh-smelling, nutrient rich humus.