Climate Shocks Cut Southern African Legume Harvests by 78 Percent
Extreme climate shocks have cut grain legume harvests by up to 78 percent in southern Africa, threatening food supplies and the livelihoods of smallholder farmers across the region, according to a research review. Beans represent the most traded and consumed grain legume crop in southern Africa, serving as a primary dietary staple and the second-most significant source of dietary protein for local populations.
Agricultural researcher Moses Chitete examined 62 studies on legumes within the Southern African Development Community alongside a team of researchers. The analysis found that repeated climate disasters—including droughts, floods, extreme heat, and erratic rainfall—deepen rural poverty by destroying crops before farming households can recover from previous seasons.
Super El Niño Threatens Upcoming Growing Seasons
A meteorological phenomenon known as a super El Niño is expected to last from September 2026 into early 2027, according to the World Meteorological Organization. This exceptionally strong event could bring severe droughts and high temperatures that target legume crops during critical growth stages such as flowering, pod formation, and grain filling.
Legumes are sensitive to water stress and elevated temperatures despite often being characterized as climate-smart. While certain varieties like cowpeas and pigeon peas tolerate dry conditions slightly better than many cereal crops, labels alone do not protect harvests from severe El Niño conditions.
Farmers and Governments Must Adapt to Weather Extremes
Researchers recommend that farmers prepare for impending weather extremes by planting early-maturing and drought-tolerant legume varieties, conserving soil moisture, and diversifying crop selections. Additional protective measures include harvesting and storing water while following seasonal climate forecasts to adjust planting schedules.
Government institutions and agricultural authorities must strengthen early-warning systems to deliver timely weather forecasts and actionable planting advice through extension workers, radio stations, and cooperatives. Policies must also reduce financial risks by improving access to affordable credit, crop insurance, and reliable markets so that a single failed harvest does not push families into long-term poverty.
Frequently Asked Questions About Southern African Legumes
Why are grain legumes critical for southern Africa?
Beans and other grain legumes provide essential calories and income for rural households and small farmers. They function as a primary staple food and serve as the second-most significant source of dietary protein in the region.
How do super El Niño events damage legume production?
Super El Niños trigger severe droughts and high temperatures that disrupt critical physiological stages in legumes, specifically flowering, pod formation, and grain filling. These climate shocks have historically reduced harvests by up to 78 percent.
What financial supports do farmers need during climate crises?
Farmers require affordable credit, crop insurance, input support, and reliable markets. Agricultural researchers emphasize that climate adaptation fails if technologies exist but remain financially out of reach for vulnerable smallholders.
Related reading