The rate of change of the 'meteorological water balance', expressed in m3 ha-1 y-1 The map provides an estimate of the increase (red in the map) or decrease (blue in the map) of the volume of water required from irrigation in order to ensure that crop growth is not limited by water stress.
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Going on a trip?
If getting there by car, instead of by train or bus, be generous and share the space. By taking other people who might have made their journey in a separate car, you're putting one less car on the road.
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