What is duff?

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Study for the Prescribed Fire Test. Prepare effectively with flashcards and multiple-choice questions, each question comes with hints and explanations. Get exam-ready!

Multiple Choice

What is duff?

Explanation:
Duff is the decomposed organic matter on the forest floor. It’s the partially decayed plant material that has broken down beyond surface litter into a darker, spongy layer that sits on or just above the mineral soil. This organic layer can burn with slow, sustained heat and influence fire spread and intensity, which is why it’s important in prescribed-fire discussions. It’s not live vegetation, nor mineral soil, and it isn’t a fire retardant.

Duff is the decomposed organic matter on the forest floor. It’s the partially decayed plant material that has broken down beyond surface litter into a darker, spongy layer that sits on or just above the mineral soil. This organic layer can burn with slow, sustained heat and influence fire spread and intensity, which is why it’s important in prescribed-fire discussions. It’s not live vegetation, nor mineral soil, and it isn’t a fire retardant.

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