Group greenhouse crops by media and stage, choose a suitable delivery method, measure emitters, and keep moisture and water-quality records.
Record crop, stage, container size, media, root development and greenhouse conditions for each group. Observe media moisture and drainage through representative cycles, using a consistent sensor or container-weight method. Include cooling and cleaning demand separately from crop irrigation.
Compare drip, hand watering, mist for the appropriate propagation purpose or recirculating subirrigation against the actual crop and layout. Obtain irrigation-water analysis and equipment requirements before selecting filtration or fertilizer treatment. Keep dissimilar containers on suitable separate zones.
For a drip group, total nominal emitter flow and collect equal-duration samples from representative positions. Record pressure and keep low or zero catches. Check for displaced emitters, leaks, blocked lines and unequal wetting before changing controller settings.
Calibrate sensors for the media and placement using their instructions. Trial the proposed control sequence and observe wetting, drainage and crop response. Check how the controller responds to sensor failure, power loss or a closed water supply; record a manual backup procedure.
Trend comparable media-moisture, water-use and water-quality measurements. Service filters and lines to the equipment instructions and the actual problem found. Keep chemical treatment decisions with the qualified operator, product instructions and water-analysis record, then repeat delivery tests after servicing.
Keep crop/media groups, observation times and the method used to judge moisture. · Record water-test results, delivery choice, equipment compatibility and treatment questions. · Record sensor locations, calibration basis, trial observations and the backup control procedure. · Keep laboratory and field readings, service actions and crop response in a dated log.
Use nominal emitter flow and Emitter collection test to compare intended and sampled delivery. · Repeat the same emitter collection test after maintenance.
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Container size, media and crop conditions affect water absorption and irrigation frequency. Greenhouse irrigation can use surface delivery or subirrigation; select and trial the method for the actual crop group.
Laboratory analysis can characterize irrigation-water chemistry. On-site pH and electrical-conductivity checks require suitable instruments and consistent methods; a flow or storage calculator cannot measure them.
Timed emitter collections provide a comparison of sampled delivery. They do not establish media moisture, salt targets, crop demand or treatment concentration.
Flow, media moisture and EC answer different questions; keep their units and methods with the readings.
Record what happens when a sensor or supply fails before relying on unattended operation.