Irrigation controlled by probes in a tomato greenhouse, with a readjustment we observed that it saves a significant amount of the cost of the water used.
Optimizing Irrigation in a Tomato Greenhouse in Valencia with Sensors
We are in Valencia, and a comparison is being made between two tomato greenhouses belonging to the same farmer, both irrigated using the same method.
After analyzing the soil and sensor data, it is discovered that the differences between the two greenhouses necessitate a redesign of the irrigation protocol.
The irrigation schedule is adjusted as follows:
Zone 1 is irrigated daily (sandy soil).
Zone 2 is irrigated two or three times per week (clay soil).
With this adjustment, a 25% reduction in water costs is observed.
Irrigation of Tomatoes in a Greenhouse with Sandy Soil
Sandy soils have a low capacity for retaining water and nutrients. They drain quickly, requiring more frequent but smaller waterings.
Tomatoes require consistently moist soil to prevent water stress, but without saturating the soil. On hot days, daily watering is advisable, as indicated by our client’s sensors.
Overwatering is not recommended, as it will wash away nutrients.
Tomato greenhouse, irrigated with clay soil
Clay soil, unlike sandy soil, tends to retain water. The sensors indicated that watering every two or three days was sufficient.
Drainage is slow, and waterlogging is more likely, which can negatively impact root oxygenation and nutrient absorption.
Another important piece of information provided by the sensors is the depth of moisture, because in clay soils it tends to decrease relative to the surface, which would prevent the root system from receiving adequate moisture.
Clay soils can accumulate salts more easily, so it is advisable to measure conductivity and, if necessary, apply controlled leaching irrigation.
The greenhouse needs good ventilation, which helps prevent fungal diseases and ensures better water balance for the plants.
Don’t hesitate to consult with our technical team
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