Water Management in Horticultural Crops

Weekly outline

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  General

  • News forum
  • Course overview Page
  • Syllabus Page
  • Schedule Page
  • Reference Page
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  24 February - 2 March

  Lecture No.1
  

  Water - the base for life. Functions described. Water resources of India and the region

  • Water–the base for life Page
  • Functions of water Page
  • Biosphere in relation to hydrosphere, atmosphere and lithosphere Page
  • What is irrigation? Page
  • Need for irrigation Page
  • Advantages of irrigation Page
  • Disadvantages of irrigation Page
  • Water resources of India Page
  • History of irrigation development in India Page
  • Planned Irrigation Development Page
  • Perspective irrigation development Page
  • Quiz
  • Download Lecture 1 in PDF format
    Download PDF
    
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  3 March - 9 March

  Lecture No.2
  

  Present day water requirement for man, agriculture and horticulture. Rainfall variability–Increasing demand with unchanging supply

  • Introduction Page
  • Surface Flow Page
  • Ground water Recharge Page
  • Transpiration Page
  • Rain fall variability Page
  • Water requirements of India Page
  • Total water requirements Page
  • Quiz
  • Download Lecture-2 in PDF format
    Download PDF
    

    
    
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  10 March - 16 March

  Lecture No.3
  

  Role of water in plant growth – Optimum, excess and shortfall in water availability, Soil water relations – available and unavailable concept
  

  
  

  • Role of water in plant growth Page
  • Plant-water relations
    
  • 1.Plant-water potential Page
  • 2.Transpiration Page
  • 3.Water and plant process Page
  • 4.Effect of moisture stress on crop growth Page
  • 5. Effects of Excess soil moisture stress Page
  • Quiz
  • Download Lecture-3 in PDF format
    Download PDF
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  17 March - 23 March

  Lecture No. 4
  

  Soil type, depth and water holding capacity - Rooting characteristics and moisture extraction patterns
  

  
  

  • Introduction Page
  • Soil Profile Page
  • Physical properties of soils Page
  • Requirements of an ideal irrigated soil Page
  • Plant characteristics Page
  • Root characteristics Page
  • Moisture extraction pattern Page
  • Soils of India Page
  • Quiz
  • Download Lecture-4 in PDF format
    Download PDF
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  24 March - 30 March

  Lecture No. 5
  

  Water requirement of crops. Lysimetry in assessing water requirement. Annual, biennial and perennial crops. PET and AET applications in water and irrigation requirements

  • Introduction Page
  • Definition-Water requirement Page
  • Classification of consumptive use of water Page
  • Classification of evapo-transporation (ET) Page
  • Factors affecting eavpo-transpiration (ET) Page
  • Methods of estimating evapo-transpiration Page
  • Estimation of water requirement for horticultural crops Page
  • Quiz
  • Download Lecture-5 in PDF format
    Download PDF
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  31 March - 6 April

  Lecture No.6
  

  Climatological approach for estimating water requirement. Use of pan evaporimeter, Pan Factor, Crop factor. Factor for different growth stages
  

  
  

  • Introduction Page
  • Four different methods
  • 1. Blaney-Criddle method Page
  • 2. Radiation method Page
  • 3.Penman formula Page
  • 4.Pan Evaporimeters Page
  • 4.1.USWB Class-A pan evaporimeter Page
  • 4.2.Sunken screen pan evaporimeter Page
  • 4.3.Piche atmometer Page
  • Kc values of crops Page
  • Crop coefficients for different growth stages Page
  • Quiz
  • Download Lecture-6 in PDF format
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  7 April - 13 April

  Lecture No.7
  

  Critical stages of crop growth – Water stress sensitivity stages, methods to overcome
  

  
  

  • Introduction Page
  • Critical stages of crop growth Page
  • Peak Consumptive use and critical period Page
  • Crop stages and critical period Page
  • Determination of critical periods of water need Page
  • Managing the available irrigation water Page
  • Quiz
  • Download Lecture-7 in PDF format
    Download PDF
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  14 April - 20 April

  Lecture No.8
  

  Scheduling of irrigation – Different approaches in scheduling – Scheduling for different crops and methods of irrigation.
  

  
  

  • Introduction Page
  • Time of Irrigation Page
  • Availability of Irrigation Water Page
  • Criteria for scheduling irrigation Page
  • 1. Plant Criteria Page
  • 2. Criteria based on soil water status Page
  • 3. Meterilogical data Page
  • Quiz
  • Download Lecture-8 in PDF format
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  21 April - 27 April

  Lecture No.9
  

  Mid-Term Examinations
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  28 April - 4 May

  Lecture No.10
  

  Cimatological approach – atmospheric demand – factors affecting ET– The concept of IW/CPE ratio in scheduling irrigation
  

  
  

  • Introduction Page
  • Frequency and interval of irrigation Page
  • Factors affecting frequency of irrigation Page
  • Climatological approach using irrigation water depth and evaporation relationship Page
  • Irrigation water/Cumulative pan evaporation ratio (IW/CPE ratio) Page
  • Quiz
  • Download Lecture-10 in PDF format
    Download PDF