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PP 505 PHYSIOLOGY OF GROWTH AND YIELD                                                                                 (2L+1P) II

Objective
  To impart knowledge regarding growth and yield analysis of  crops, yield models-and yield prediction.

Theory

UNIT I
  Crop growth analysis and techniques, key growth parameters. Analysis of factors limiting crop growth and productivity- the concept of rate limitation.

UNIT II
  Phenology- Growth stages, internal and external factors influencing flowering. Photoperiodic and thermo-periodic responses and the concept of degree days and crop growth duration.

UNIT III
  Canopy architecture, light interception, attenuation of light through crop canopy, energy use efficiency of different canopies. LAI, LAD. Concept of critical and optimum LAI. Plant ideotypes,

UNIT IV
  Source-sink relationships. Translocation of photosynthates and factors influencing transport of sucrose. Physiological and molecular control of sink activity – partitioning efficiency and harvest index.

UNIT V
  Yield structure analysis, theoretical and actual yields. Simple physiological yield models-and yield prediction.

Practicals
  Plant sampling for leaf area and biomass estimation; analysis of growth and yield parameters – LAD, NAR. CGR, LAI, LAR, SLA partioning efficiency HI, measurement of light interception, light extinction coefficient, energy utilization efficiency based energy intercepted, and realized. Computer applications in plant physiology, crop productivity and modeling.

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