Humus

noun.

Rich, dark organic material formed by decay of vegetable matter, essential to soil's fertility.

Sentences

1. The gardener suggested the use of compost to create more humus in the soil, hopefully allowing more plant growth.

2. In order for plants to grow exponentially the humus level in the soil must be very high, to maintain moisture in the soil.

Synonyms

fertilizer, soil conditioner

Antonyms

pesticides, toxins
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Forest Floor - Humus Form Orders Part 3