Basics of Soil Science
· Soil formation: weathering and pedogenesis
· Soil and subsurface environment
· Soil profile and its layers
· Soil properties-physical (density, porosity, texture, soil structure), chemical (inorganic and organic)
· Soil types in India
Collection and preparation of soil samples for analysis: sampling procedure, preparation of sample for analysis-drying, seiving, grinding, mixing, storing
Soil Biology and Biochemistry
· Soil biota, types of organisms in soil
· Microbial diversity in soil- Microorganisms in surface soils, in shallow subsurface environments, in deep subsurface environments
· Interactions among soil microorganisms-neutral, positive and negative associations
Humus formation
Soil Contamination and Degradation
· Soil contamination due to metals, chemical fertilizers, pesticide and their effects
· Soil pollution-caused by industrial effluents (paper, textile, tannery, metal, pharma)
Soil degradation-causes, types (chemical and physical), measures to check soil degradation, remediation of degraded soil
Soil conservation
Soil Fertility
· Soil fertility and soil productivity; nutrient sources:
o Soil nitrogen – forms, symbiotic nitrogen fixation, factors affecting nitrogen fixation
o Soil phosphorus - forms, mechanism of phosphorus fixation, factors affecting phosphorus availability in soils
o Soil potassium - forms, mechanism of potassium fixation, factors affecting the potassium fixation in soils
o Micronutrients – Source of micronutrients in soils; factors affecting their availability
Integrated nutrient management
Applications of biopesticdes
Integrated pest management
Importance
Principles and limitations of IPM
Tools/methods of IPM