Southern Africa's agricultural growth hinges on dismantling trade barriers, economist argues

When the Southern African Development Community gathered for its 46th summit in August 2026, agriculture sat at the center of the conversation. The region's leaders understood what economists have long argued: farming remains one of the most direct paths to broader economic growth and food security across the 16-member bloc. Agriculture contributes roughly 10 percent of GDP for most SADC countries, a substantial foundation that could be built higher if the right conditions existed.

But the sector faces three stubborn obstacles. Land governance remains weak across the region, with informal tenure arrangements discouraging large-scale investment and keeping smallholder farmers trapped in low-productivity cycles. Road infrastructure connecting farms to markets remains inadequate, a particular problem when the product is perishable and time is money. The third barrier—and the most immediately addressable—is trade itself. Countries within SADC cannot expand agricultural production without access to new markets, yet the region has spent recent years erecting walls instead of opening gates.

The evidence is plain. South Africa has signaled restrictions on vegetable and fruit imports from neighboring countries. Namibia, Botswana, and Mozambique have responded by threatening to limit their own purchases from South Africa. These aren't abstract policy disputes; they directly threaten the viability of new farmers trying to build sustainable operations. Without reliable market access, expansion becomes impossible. Food security across the region suffers as a result.

On paper, the conditions for robust regional trade should exist. SADC itself is built on a commitment to a free trade area among its members. Five countries—Botswana, Eswatini, Lesotho, Namibia, and South Africa—belong to the Southern African Customs Union, an arrangement explicitly designed to facilitate the free movement of goods. Yet agricultural trade has not benefited substantially from either framework. Three specific problems explain why.

First is the matter of scale. South Africa's food market alone absorbs over $7 billion in annual imports, while Eswatini imported only $806 million of agricultural products in 2025. South Africa accounts for more than half of SADC's agricultural exports to world markets, followed by Tanzania, Zimbabwe, Zambia, and Mozambique. This imbalance has bred resentment, particularly among smaller nations that feel overwhelmed by South African competition. Second is the weaponization of phytosanitary standards. In 2025, Tanzania banned South African agricultural imports in retaliation for what it claimed was a South African ban on Tanzanian bananas. South Africa denied imposing any ban, attributing the dispute to miscommunication and noncompliance with general standards. The episode revealed how easily health and safety rules can become tools of protectionism. Third is the stubborn reality of productivity gaps. Maize yields across most of SADC have stagnated at roughly one tonne per hectare for three decades. In South Africa, yields reach six tonnes per hectare, a difference rooted in superior seed cultivars and continuous agricultural improvement. This gap means Zimbabwe, Malawi, Tanzania, Mozambique, and most other members import more than they export.

Some countries have responded to these pressures by restricting imports, hoping to protect and nurture domestic production. Botswana and Namibia have pursued this strategy, arguing they cannot build local capacity while competing against South African imports. The logic appears sound at first glance. But it misses a crucial point: trade restrictions contradict the very agreements these countries signed. SACU and SADC both prioritize free trade within the region. More fundamentally, the problem is not South Africa's dominance but the region's failure to produce what South Africa actually needs. South Africa imports wheat, rice, palm oil, poultry products, and whiskey—goods that other SADC members do not produce in surplus. Restricting South African imports will not create these surpluses; it will only shrink the overall market.

Moving forward requires a different approach. Countries should collaborate on farm inputs and knowledge exchange rather than erecting unjustified barriers. Agricultural output must increase with an explicit eye toward expanding external markets, not just regional ones. The SACU framework itself needs comprehensive review to resolve current trade friction and give member states greater flexibility to negotiate bilateral agreements outside the customs union structure. Finally, the region's diplomatic infrastructure—South Africa alone maintains over 100 missions and embassies abroad—should be staffed and equipped to help businesses identify and access new markets. Without these changes, the agricultural sector will remain constrained, and the region's food security will depend on the goodwill of external suppliers rather than the capacity of its own farmers.