Period 2

Period 2


  • To maintain the target water content and achieve drain on every round of 15 to 20%.

Start time

  • At the end of Period 1.

Length of period

  • Until midday.

Dose size

  • A dose size factor of 25 to maximize the cone.

Time starts

  • These are necessary especially on a dull day when more water is used by the plant per unit of light. Frequency judged by drainage percentage achieved and water content during dull days.
  • Guide 20 to 60 minutes.

Light starts

  • These are related to crop type and conditions.
  • Guide figures for Northern Europe would be 2.2 to 2.5 mls/joule/m2.
  • Click here for more information on light influenced starts.

Other factors

  • It is important in Period 2 to maintain the drain percentage for each round.