Fungi in Soil

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Soil Microbiology Nature of Soil Soil Habitats (Lithosphere) Microorganisms in Soil Decomposition of Organic Matter in Soil Bacteria in Soil Physiological Types of Bacteria in Different Soils Fungi in Soil Protozoa in Soil Algae in Soil Viruses in Soil Functions of Microorganisms in Soil Humus Functions of Humus Cycles of Elements Carbon Cycle Nitrogen Cycle

Fungi in Soil

	Fungi in Soil - These include a group of organisms from the moulds to the large fleshy fungi such as mushrooms, The development of fungi is especially favoured by soils having an acidic reaction and where an aerobic condition is likely to be present near the surface. Since they exist in both the mycelial and the spore stages, it is difficult to estimate their numbers.
Their numbers range from thousands to hundreds of thousands, Fungi are active in decomposition of cellulose and lignin of plant tissue. The mould mycelium penetrates the soil and forms a network which entangles soil particles and forms water stable aggregates.
This gives the soil its crumb structure, which is of considerable agricultural importance. Thus fungi a1so improve the physical condition of the soil. Of the other hand, yeasts are generally not found in large numbers except in soils of vineyards and orchards

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Sulphur Cycle Ammonification in Soil Nitrification in Soil Nitrate Reduction in Soil Denitrification in Soil Nitrogen Fixation Symbiotic Nitrogen Fixation Rhizobium Specificity of Bacteria and Legumes Non-Symbiotic Nitrogen Fixation Non-symbiotic Nitrogen Fixing Microorganisms Mechanism of Nitrogen Fixation Oxidation of Sulphur and Sulphur Compounds by Bacteria