Soil humus

Soil HUMUS

1. Submitted by Sonia Hassan Samreen Mehmood Irum Shaheen Soil humus

2. SOIL The unconsolidated mineral or organic material on the immediate surface of the Earth that serves as a natural medium for the growth of land plants .

3. SOIL HUMUS The organic component of soil, formed by the decomposition of leaves and other plant material by soil microorganisms. Formation of Humus:. Residue left when bacteria & fungi biodegrade plant material.

4. Importance of Humus Holds nutrients and prevents them from leaching. Acts like a sponge, absorbing moisture. This helps the soil during dry spells. Traps oxygen, which is essential for root development. Feeds and protects microbes in the soil. Prevents erosion by holding soil particles together. Helps root structures to grow by contributing to improved vigour . Protects the soil from extremes in temperature. Maintains soil pH, helping to correct soil pH problems .

5. Characteristics Of Humus Non Living Humus ranges in color from Brown to Black. Finely divided organic matter in soil, derived from microbial decomposition of plant and animal substances.

6. Total Composition Carbon 60%. Nitrogen 6%. Smaller amount of Phosphorus and sulphur .

7. Functions Source of N,P & Sulfur Improve soil structure. Increase water holding capacity.

8. Types of Soil Humus Muck humus:. Highly decomposed organic matter in which the original plant parts are not recognizable. Peat Humus:. Peat humus is the dead, highly decomposed organic material that accumulates in the lower levels of peat bogs. It is an excellent soil conditioner.

9. Types of Soil Humus Muck Humus PEAT HUMUS

10. Advantages of Soil Humus Nutrient supply. Water holding capacity. Cause soil aggregation. Improves soil structure. Prevention of erosion. Prevents leaching. Increases the oxidation of complex organic substances.

11. D isadvantages of Humus Its results take time and are visible only over the long term. Another possible drawback to humus is that it may be difficult to know exactly what went into making it. This leads to the possibility of pathogens or weed seeds coming into your garden with the humus.

12. Future prospects The global organic fertilizer market is expected to reach an  estimated $15.8 billion by 2026 . The major drivers for this market are increasing consumption of organic food, favorable government regulations, and ease in availability of organic waste . World leaving the artificial Fertilizer due to decreasing of fertility of soil and coming towards organic Fertilizer in which humus is preferable.

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