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Why aren't South Africans growing more indigenous crops? How farmers can be nudged to change their ways

make up most of South Africa's food systems. This displaces indigenous crops and edible forest plants.

The problems created by westernized diets include caused by commercial farms. These diets also threaten African food systems. They cause indigenous farming practices and knowledge about indigenous crops to become forgotten. Westernized diets of processed foods with also cause health problems.

Some indigenous crops like blackjack and wild cucumber are highly nutritious. They contain vitamin A, vitamin C, protein, fiber, calcium, iron, magnesium, zinc, beta-carotene, folate and ascorbic acid. They're often found growing in the wild, and therefore require less and few .

I am an agricultural scientist and research how and play a social and economic role in .

a rural area in South Africa's KwaZulu-Natal province to find out whether indigenous crops were included in the services offered by agricultural extension service providers.

Agricultural extension services use qualified advisors to bridge the gap between research and practical farming. They provide farmers with training and support to grow crops in an environmentally sustainable way and improve food security for communities.

Indigenous foods have a big role to play as the world searches for sustainable ways of producing food and increasing food security. Both of these are among of the South African presidency of the G20. South Africa, for example, advocates for food sovereignty, and sustainable food systems .

that it is critically important for agricultural extension advisors to train farmers in growing underutilized indigenous food crops.

How indigenous crops are undermined

African communities traditionally relied on for their sustenance. But over the years, these crops have become sidelined. A stigma has been attached to African indigenous foods as . Because supermarkets sell so few indigenous vegetables, they .

I interviewed 195 farmers from selected rural communities of Ilembe, King Cetshwayo, and Umkhanyakude district municipalities, who were all involved in growing and trading indigenous crops.

My research found that agricultural extension service providers had encouraged smallholder farmers to grow that they could sell—cash crops such as cabbage and spinach.

They may mention indigenous crops when interacting with farmers. But they don't teach the production techniques or value chains associated with these crops. Communication between farmers and the agricultural extension service providers is still mainly centered on , , or .

This is partly because agricultural extension advisors have been trained in a Euro-American-centric curriculum and don't know how to teach farmers about growing and selling indigenous food crops.

Another reason is that agricultural extension services are still associated with teaching farmers how to use pesticides and herbicides. Agrochemicals are still seen as a way to make crops better. Some retailers do not purchase farmers' products if there is no paper trail of herbicides and pesticides used during the production.

But this focus means that agricultural extension service providers have missed a golden opportunity to include indigenous crops (local knowledge) in their advisory frameworks and transform South Africa's food system.

The case for indigenous crops

There is a of nutrient-rich indigenous crops in South Africa. These plants often need little water and little to no pesticide as they've adapted to local pests and environmental conditions.

Indigenous crops such as , , and are also very nutritious.

Great progress has also been made through dialogue driven by academics and organizations that lobby for Africa to develop self-sufficient food systems based on indigenous foods that don't have to be imported. These organizations include and movements like the . Extension advisors could work alongside these organizations.

What needs to happen next

have found that the way ought to be transformed.

New and inclusive food systems should be established. This means that must be included as an important part of South Africa's food systems. To do this, they must be commercialized.

It would help if underutilized indigenous food crops were recognized by governments, educational institutions, and the global food industry. This should be done through new policies, funding for research, and by including these crops in mainstream agricultural development.

Indigenous food crops are also a vital part of . These crops represent a legacy of cultural identity. For example, amaranthus, formerly a "poor man's" crop, is currently the subject of research and development. It's now recognized for its nutritional value and is being cultivated and studied by research institutes across Africa. Even mainstream seed companies are now producing . This should happen with other indigenous crops.

Agricultural extension service providers need to refocus their efforts on this food system transformation. Agricultural extension service bodies (government and non-government) must invest in training agricultural extension service providers about indigenous food crop production.

One way of achieving this is through continuing professional development platforms. These could track how many farms are beginning to grow indigenous crops again based on advice from extension services.

These steps will help revive indigenous crops and bring about food justice: where everyone has access to nutritious foods.