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AP 630 CROP MICROMETEOROLOGY                                                                                 (2L+1P) II

(Pre-requisite AP 530)

Objective
  To impart advanced theoretical and practical knowledge about the physical processes in the atmosphere near the ground for growing crop plants.

Theory

UNIT I
  Micro-, meso- and macro-climates and their importance, Atmosphere near the ground – bare soil and crop surfaces, exchange of mass, momentum and energy between surface and overlaying atmosphere, exchange coefficients, Richardson number & Reynold’s analogy, Boundary layer, frictional affects, eddy diffusion, forced & free convection.

UNIT II
  Micrometeorological parameters; instruments and measuring techniques, agromet observatory.

UNIT III
  Radiation, temperature, wind, humidity and carbon dioxide profiles in crops, radiation interception and utilization by crops – albedo, net radiation, PAR, LAI, biomass; photoperiodism, carbon dioxide and photosynthesis; net photosynthesis.

UNIT IV
  Air, canopy and leaf temperatures and their biological effects – cardinal temperatures, thermal time, growing degree days, heat use efficiency and their application in field crops.

UNIT V
  Wind profile near the ground; roughness and zero plane displacement, evapotranspiration –potential and actual; advection.

UNIT VI
  Modification of microclimate by cultural practices, protection of crops from extreme weather.

UNIT VIII
  Crop yield and weather parameters; climatic normal of crop plants, crop weather calendars, crop growth models, use of remote sensing for crop growth and yields estimation. Weather based insect pest and disease forecasting, Weather based agro-advisory.

Practicals
  IPAR, FAPAR, PAR Extinction Coefficient, RUE, Temperate profile, Wind profile, humidity, Net Radiation profile of the crops at different stages. Thermal indices, albedo, canopy temperature, CATD, SDD and CWSI.

Suggested Readings