DESCRIPTION OF COURSES
AG 511 / AP 511 CROP ECOLOGY AND AGROMETEOROLOGY (3L+1P) III
To impart knowledge about crop ecology and agrometeorology
Concept of crop ecology, ecosystem characteristics, energy flow in ecosystem, succession and climax concept, adaptation of crops, agro-ecological regions.
Agrometeorology – aims, scope and development in relation to environment. Historical aspects of meteorology / climatology.
Physiological response of crop plants to weather variables (light, temperature, CO2, moisture and solar radiation). Atmospheric pollution and its effect on climate. Global climate change and its impact on agriculture.
Competition in crop plants, environmental manipulation through agronomic practices, agro-climatic indices. Improvement of unproductive lands through crop selection and management.
Stress and strain terminology; nature of stress injury and resistance, causes of stress. Low temperature stress - freezing injury and resistance in plants, chilling injury and resistance in plants, practical ways to overcome the effect of low temperature stress. High temperature or heat stress - meaning of heat stress, heat injury and resistance in plants, practical ways to overcome the effect of heat stress through soil and crop manipulations.
Environmental pollution: air, soil and water pollution, and their effect on crop growth and quality of produce; ways and means to prevent environmental pollution.
Monsoons – their origin and characteristics. Weather hazards and their mitigation. Artificial rain making. Weather forecasting in India – short, medium and long range. Remote sensing – aerospace science and weather forecasting. Benefits of weather services to agriculture.
Visit to agro-meteorological observatory to record sun-shine hours, wind velocity, wind direction, relative humidity, soil and air temperature, evaporation, precipitation and atmospheric pressure. Measurement of solar radiation outside and within plant canopy, soil and canopy temperature. Measurement/estimation of evapo-transpiration by various methods. Measurement/estimation of soil water balance. Rainfall variability analysis. Agro-climatic indices - determination of heat- unit / photo-thermal units requirement. Remote sensing and familiarization with agro-advisory service bulletins. Study of weather reports, working principle of automatic weather station.