1- when Irrigation during the hottest hours of the day is done, the rain drops on plant leaves and flowers of the lens can influence the effect of burning at the same time making sprinkler irrigation evaporation losses greater than other irrigation methods. For these reasons, the cool hours of the day or night irrigation should be preferred.

• Pipes connecting the rubber seals, gaskets must be clean channels.
• Hard and semi-fixed systems attempt to pressure over whether the pipes should be closed later.