DESCRIPTION OF COURSES

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SSAC 603 NUTRIENTS IN SOILS AND PLANTS                                                                               (3L+0P) I

Objective
To teach latest developments in soil-plant interactions/ relationships with respect to nutrient management

Theory

UNIT I
Essential nutrients – historical perspective; nutrient status of the world and Indian soils; nutrient content in relation to stages of crop growth and their uptake by crops and cropping systems.

UNIT II
Carbon - a nutrient central to soil fertility; carbon cycle in nature, stocks, pools and fluxes; greenhouse effect and climate change; carbon sequestration vis-à-vis sustenance of  soil quality and crop productivity.

UNIT III
Recent advances in bioavailability, transformation and dynamics of major- and micro-nutrients in soils.

UNIT IV
Growth and the factors affecting it; current approaches in soil fertility evaluation: critical nutrient concentration - concept and determination (graphical and statistical procedures); diagnosis and recommendation integrated system (DRIS).

UNIT V
Nutrient interactions – concepts, chemical and biochemical basis, and models for study; nutrient interactions in soil-plant continuum for maximization of the productivity of crops and cropping systems; water – nutrient interactions under excess and scarce water supply situations; fertigation – an example of water-nutrient synergy.

UNIT VI
Nutrient management in water-logged soils and under organic farming and precision farming.

UNIT VII
Nutrients and crop quality; micronutrients and human health - essential micronutrients list and their critical levels for human health; biofortification – concept, approaches and implications.

Suggested Readings