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</a> “Currently, at the start of each season, farmers calculate how much fertiliser they need, and then during the season they add more fertiliser here and there. But there’s no control, they don’t actually know if the soil really needs that extra fertiliser,” said LucÃa Gutiérrez. “This usually means that too much fertiliser is used, which could be polluting the soil and groundwater. With this automatic control system farmers can actually save resources, and it’s good for the environment.”