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  • Why are there no irrigation events at night?

    Posted by Admin on 29 April 2024 at 9:03 am

    It saves energy and provides a protracted opportunity for the biofilters to drain while still retaining sufficient moisture to sustain the plants. This also allows for microbes to proliferate in the presence of abundant oxygen.


    Additional information can be found in section 21 of ‘An Introduction to iAVs’

    In this section, it states:

    “In iAVs, the irrigation is only during the day when there is enough light for photosynthesis to occur, there are no irrigation schedules at night. Pumping water at night does not provide any benefit to fish, microbes, or plants, and it can potentially harm plant rhizosphere and metabolism.”It goes on to explain that plants have different metabolic processes at night and do not transpire or uptake water. Allowing time between irrigation for aerobic microbes to proliferate without interruption is also mentioned.

    Additional reasons given include the potential for fungal and bacterial disease development from excess moisture at night.

    So, in summary, the key reasons given for no irrigation at night in iAVs are:

    • No photosynthesis occurs to benefit plants
    • Potential harm to plant rhizosphere and metabolism
    • Plants do not transpire or uptake water at night
    • Allow aerobic microbes time to proliferate
    • Avoid excess moisture that can lead to plant diseases
    Admin replied 3 weeks, 2 days ago 1 Member · 0 Replies
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Why are there no irrigation events at night?