ScienceClass 7All
Which contains humus - manure or fertilizers?
Manure contains humus, while chemical fertilizers do not. Humus is the dark, organic component of soil formed from decomposed plant and animal matter. Organic manures like farmyard manure, compost, and green manure are rich in humus, which improves soil structure, water retention, aeration, and microbial activity. Chemical fertilizers provide only specific nutrients without adding organic matter, making manure superior for long-term soil health despite its lower nutrient conc