Greenhouses

A greenhouse can accumulate substantial heat and moisture, making heating and ventilation important parts of environmental control. Relevant evidence may include thermostat or controller settings, fan and vent operation, heater records, sensor data, weather information, maintenance records, alarms, and utility interruptions. Penn State Extension notes that greenhouse operations control water, temperature, and ventilation and that ventilation systems are used to manage excessive temperatures when heating is not required.

A suitably qualified greenhouse expert may review irrigation schedules, flow information, water quality, nutrient-injection records, growing media, equipment settings, maintenance, and crop observations. Greenhouse production commonly uses drip or trickle irrigation, and nutrients may be supplied through irrigation water by fertigation. The significance of those records depends on the crop and system; specialized irrigation-system design or failure questions may require separate Irrigation expertise.

Useful materials may include environmental-controller data, temperature and humidity histories, sensor logs, alarms, heating and ventilation records, irrigation and fertigation information, lighting schedules, utility records, equipment-maintenance histories, greenhouse plans, photographs and video, crop-production logs, operating procedures, and incident communications. Original electronic controller and sensor data can be especially important when the timing or duration of an environmental excursion is disputed.