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Home Society

Wind is blowing for water minds

by Nation Online
04/05/2019
in Society
6 min read
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The newly released movie, The Boy Who Harnessed the Wind, has important lessons about the need for innovation and small-scale, supplementary irrigation solutions to increase food security and potentially improve nutrition in Africa and elsewhere, writes Stockholm International Water Institute (Siwi) senior advisor PROFESSOR JAN LUNDQVIST.

The movie “The Boy Who Harnessed the Wind”, available on Netflix, is the highly acclaimed directorial debut of award-winning British-Nigerian actor Chiwetel Ejiofor. It is also an excellent illustration of the vital difference that local initiatives and simple technologies can make for water, food and livelihood security.

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Kamkwamba | The Nation Online
Meet the boy who harnessed the wind: Kamkwamba

Based on William Kamkwamba’s bestselling autobiography of the same title, the movie features a young boy, William, in a rural setting in Malawi. His father Trywell cannot afford to pay the school fees after the crops fail due to lack of rains.

With a curious and entrepreneurial attitude, William still sneaks into the school library and figures out how to build a simple windmill from scrap material and a frame of his father’s bicycle. After a struggle between the generations- father and son – the bike has to be sacrificed to build a solid structure on which the propeller is fixed at the top of the 25 – 30 feet high wooden sticks.

With the energy from the wind, small volumes of precious water are lifted from shallow groundwater and conveyed to nearby fields through a rubber pipe. The blowing wind and the greening of drooping plants in a parched landscape naturally generate big smiles on the faces of the villagers struggling with draught.

The movie provides lots of food for thought. For an African audience, it is mindboggling to watch a young boy who manages to introduce such a change and that his father lets him demolish his bicycle, albeit after a series of rows.

But it is easy to comprehend that living conditions are at the mercy of access to water. When the rains fail and the soils are desiccated, leaving the farmers high and dry even at the beginning of the season, a potential for change is below the surface.

The movie highlights the vital importance of small amounts of water to supplement highly erratic rainfall and that can be controlled and distributed by the farmers to wilting crops, in selected fields, perhaps at night.

Using water wisely

The movie provides a contrasting image to a conventional view of irrigation as energy—and water—guzzling large-scale and capital-intensive systems, designed to produce selected crops for exports. Such ventures tend to deprive households, industry and the environment of the water that is available in rivers, lakes and aquifers.

The detrimental effects for downstream users depend on type and scale of irrigation or water management, land-use and soil conservation. There is not just one type of irrigation with one kind of impact. 

The small-scale arrangement for lifting water shown in the movie is at par with rain water harvesting arrangements in terms of the modification of the water balance in catchments. The good thing is that these arrangements may be combined.

Like the movie, the blog could have ended here.

But another timely and pertinent question is: how and for what is the precious water best used? This is not discussed in the movie. Presumably, most farmers go for traditional varieties of maize, the by far most common crop in this and other parts of Africa.

For good reasons, farmers are risk averse and often stick to what they are accustomed to, even if circumstances change. They are familiar with the cultivation of maize, the cobs are easy to store till the next season, and families have the utensils for the preparation of meals. In that sense, the additional water gives a good return per drop of additional water.

The perfect storm

For dubious reasons, farmers are often also opportunity averse, like Trywell, who initially dismissed the brave idea of William and who seemed to stick to maize. But in terms of nutritional contents and with the need for cash–to pay school fees or to buy a bicycle and other goods–allocating additional water to maize is not a smart choice. Different kinds of malnutrition are a huge challenge in all parts of the world, among the poor as well as among the rich. Currently an estimated 830 million people lack access to food, particularly in areas of conflict.

As a comparison, the World Health Organisation (WHO), estimates that over 2 000 million people are affected by micro-nutrient deficiencies, including essential vitamins and minerals, more than twice the number of people who are suffering from too little food.

Unbalanced diets based on a few crops with low nutrition density, together with unhealthy food habits, are a new and added dimension to what has been described as “the perfect storm”: a dire combination of rapid demographic trends, food shortages, global warming, water predicaments and insufficient energy resources.

Harvesting the benign wind for enhanced water and nutrition security is a non-fossil option to reduce the dramatic perils of the perfect storm. If there is a lull, the sun that is often a curse, provides another non-fossil source of energy.

Not more of the same

Apart from the urgent need to ensure a high nutritional productivity of water, not only more crop per drop, socio-economic aspects for a diversification of agriculture are compelling.

Young people in Africa and elsewhere turn their backs to agriculture for various reasons. At the same time, urban centres expand, and a growing number of people need and demand more food. Changes in society on the demand side provide opportunities for farmers to sell more. But not “more of the same”.

The taste for different/new crops, including bio-fortified varieties of maize and other crops, is on the increase and many of these crops, vegetables and fruits can and should be produced domestically.

Call for more Williams

There is a scope for a sequel about the transformation of the use of water and land, in Africa and elsewhere: for a worthwhile use of precious water, for improved livelihoods, for better nutrition, for a utilization of connections between rural and expanding urban centres.

The world needs more Williams: boys, girls, females and males.—Siwi.org

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