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What is the Most Effective Way for Greenhouse Farmers to Have Success…

- - - - Ineffective as it only accounts for vertical growth and dismisses changes in the leaves, flowers etc.
    - - Dry weight
        
        Drying the plant after removing it from the soil, then drying it in the oven before measuring its weight
        
        Requires more time
        
        Accounts for the growth better than the water retention of the plant
      - Fresh weight
        
        Measuring the weight immediately after removing the plant from the soil
        
        Time-efficient
        
        However, it accounts for the water retention of the plant, which is not synonymous to its growth, but rather its ability to absorb and store water
    - - Oxygen increases
        
        Could be measured using a O2 probe
        
        Need to account for the oxygen that it is using up for cellular respiration
      - Carbon dioxide decreases
        
        Could be measured using a CO2 probe
        
        Does not need to account for cellular respiration of the plant
      - Moisture of the soil decreases
        
        Could be measured through a tensiometer
        
        Absorbing more moisture is not synonymous to leading to more growth
- - - - Results would be difficult to interpret as numerical values cannot be assigned to the "amount of nutrients" of each fertiliser
  - - - pH decreases as temperature increases, as the denaturation of organic acids acidifies the soil (Onwuka & Mang, 2018)
      - pH decreases as rainfall increases (Onwuka & Mang, 2018)
    - - Adding NaOH to increase the pH
      - Adding HCl to lower the pH
  - - - Colour of light and their associated wavelengths in nanometers
- - - - Enables oxygen and carbon dioxide diffusion due to its porous property
    - - Two types
        
        Single pane
        
        Better light transmission
        
        Good for plants which require high light intensity
        
        Double pane
        
        Aids in insulation, enabling the greenhouse to naturally be warmer
    - - Light scatters
      - Good light transmission
      - Good diffusion
  - - - Influences humidity (Department of Primary Industries, 2020)
    - - Factors that lead to temperature fluctuation
        
        Affected by the amount of sunlight
        
        Affected by ventilation
      - Can be measured through a temperature gauge or a greenhouse temperature monitoring system (AerIndustries, 2019)
    - - What type of light?
      - Light intensity
- - - - Mimic this in lab conditions through changing the frequency of the light (i.e. its colour) in hertz.
        
        White light
        
        Red light
        
        Blue light
    - - Mimic this in a lab condition through changing the moisture of the soill
    - - Mimic this in lab conditions through incubators
    - - Increase this in lab conditions through changing the number of hours the lamp is on for
- - - - Would be difficult to grow in a lab given the time frame
  - - - Photosynthetic floatation method can be applied
    - - Fast growing