The hydrological cost of growing our food
Mar 11, 2025 · Anshul Aggarwal
In my last note, I shared about the economic paradigm that is taking us towards a ‘world without agriculture.’ I would like to explore this economic paradigm a little more by isolating the costs of the food that we grow. Let’s take water as the first one. As per several studies, agriculture accounts for about 70% of all freshwater use globally. This number is more than 80% in a country like India where over 50% of the population is still engaged in agriculture. Within Auroville, farms (perhaps along with Matrimandir) are the biggest users of freshwater. The challenges of groundwater depletion, rampant use of free electricity borewells in the bioregion for non-edible crops like casuarina and other fast-growing timber, the beginnings of salination of groundwater and so on offer an opportunity to us to reflect on the hydrological cost of growing food and how can we not only reduce our water consumption but, perhaps what I think is more important to focus on, optimize the use of water in agriculture.
There are different ways of thinking about what we should grow and what we can grow depending on people’s preference and the weightage we can give to the ecological and social costs of growing food. Should something be grown only because it’s easier to grow, or because it is more water efficient, or because people really ask for it, or it is less labour intensive and so on. The answer to these questions is never black and white and they change from situation to situation and from time to time. For instance, farmers cannot impose water efficiency over people’s preference for a certain kind of food. At the same time farmers cannot simply chase what the market demands, prioritizing it over its ecological costs.
A classic case for this is Avocado. It is common knowledge that Avocado is a water guzzling crop. AuroOrchard received its first Avocado seeds from the Mother herself in the early 70s. These we now call the Mother trees. From these trees, many more trees have been planted at AuroOrchard as well as outside. These Avocados are some of the best that we can find in the region, some would say anywhere. There is a huge demand for these Avocados in Auroville and also the Ashram community. Should we be planting more Avocado knowing that we can grow them well? Or should we turn our heads and let people buy Avocados from Pondy market which are nowhere near as good and definitely have a higher ecological cost. Again, the answer is not straightforward and we need to find a balance. We have planted more Avocado trees in the last year but we are exploring how Avocados can be grown with other fruit crops so that water can be used optimally. In such a scenario, the hydrological cost of Avocado gets distributed to many other crops that are growing with it. However, such a solution would then add to the management costs of the system and perhaps the management is even more costly since water for the moment is free. Therefore, if farmers are delegated with the responsibility of conserving our natural resources while farming, there are costs associated with conservation as well and these are to be borne collectively.
The hydrological costs of water must not be seen only as the cost of water used to grow food but also the cost to the farmer to be water-wise, to protect the water-source, to optimise farming within the water resource they are entrusted with.
