24/11/2024
Myth: ‘Avocados consume a lot of water’
Wrong. Compared to other popular foods such as beef, chocolate and coffee, avocados consume far less water- up to nine or ten times less litres of water used for every kilo grown. In areas of high rainfall, such as regions of Colombia and South Africa, avocados often require no irrigation to grow, instead relying on rainwater.
In other areas, where there is less rainfall, innovative technologies are being used to reduce water consumption.
Over the last 10 years, innovations in water supply technologies such as sensors to measure aspects of soil moisture, sap flow, and water potential, have enabled more precise irrigation and reduced irrigation up to 50%.
The water footprint of avocados is lower than many popular foods
While water consumption can be a contentious issue, the truth is that avocados consume more or less the same water as other fruits and vegetables, and far less than many very popular foods. Studies by the UNESCO-IHE Delft Institute for Water Education show that avocados have a global average water footprint 8 to 9 times less than beef, chocolate and ten times less than coffee. The same source shows that water consumption of chicken and butter also far outranks that of avocados.
According to a more recent study, published in the Journal of Environmental Management in 2019, the total water consumption of avocados has gone down today to around 800L/kg due to better water management and smart innovation technologies.
Advanced technology to reduce water consumption
Depending on where avocados are grown, water consumption can fluctuate significantly. In many leading grower regions that experience high rainfall, such as Colombia, Dominican Republic and Kenya, avocados can obtain almost all of the water they need directly from rain, with only 10 litres of irrigation per kilo.
In regions with less rainfall like Chile, Spain and Peru, where more irrigation is needed, advanced drip irrigation and other smart water supply technologies have substantially lowered water consumption and continue to reduce the water footprint of avocado farming. The last 10 years have seen huge developments in digital agriculture using agronomic algorithms, sensors, AI and the cloud to monitor the soil, plants and weather to calculate exactly how much water is required and when. Programs using digital agriculture technology in small farms in Chile have seen a reduction in water use of 25% while farms in Spain have seen a reduction in water use of up to 50%. These systems continue to be taken up around the world among both large and smallholder farms.
Finally, in areas which remain affected by ongoing droughts, caused by climate change, we are witnessing a migration to locations that are better suited to sustainable avocado farming, where the plants naturally need less irrigated water.
According to a more recent study, published in the Journal of Environmental Management in 2019, the total water consumption of avocados has gone down today to around 800L/kg due to better water management and smart innovation technologies.