Subject Details
Dept     : AGRI
Sem      : 3
Regul    : 2019
Faculty : Dr K Radhika
phone  : NIL
E-mail  : radhika.k.agri@snsct.org
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Lecture Notes

UNIT 1:
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Pedalogical and edaphological concepts
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Definition of soil
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Definition of rocks and minerals
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Soil formation
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Weathering of rocks of soil
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physical weathering
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Chemical weathering
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Biological weathering
UNIT 2:
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Soil texture and textural classes
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Soil textural classification
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Soil structure and classification - Gradation analysis
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Soil consistency
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Major types of soils in Tamil Nadu
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Major soil types of India.
UNIT 3:
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Properties of soil
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Bulk density
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Particle density
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Porosity
UNIT 4:
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Soil water
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Soil water potentials
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Soil moisture constants
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Water movement -Infiltration, hydraulic conductivity, percolation, permeability and drainage
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Soil pH
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Soil EC
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Soil Micro organisms - Beneficial and harmful effects.
UNIT 5:
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Soil organic matter
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C : N ratio
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Carbon cycle
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Nitrogen cycle
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Soil fertility
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Soil nutrients
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Significance of macro and micro nutrients

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