Van's Fields: Farming Smarter for a Warmer World
Vo Van Van's 60-year-old rice fields in Long An province stand out in Vietnam's Mekong Delta. Unlike the usual flooded, emerald expanses, his paddies are partially submerged. A large drone, with an eagle-like wingspan, hums overhead, spreading organic fertilizer on the thriving, knee-high rice.
Van employs novel methods: reduced flooding and drone fertilization. Vietnam sees these as vital solutions to rice farming's core dilemma: this essential crop is both highly susceptible to climate change and a significant contributor to it.
Rice cultivation needs flooded fields, isolating it from other crops and requiring labor-intensive transplanting. This water-heavy process emits significant methaneā80+ times more potent than COā short-term. Flooding depletes soil oxygen, boosting methane-producing bacteria. Rice paddies contribute 8% of human-made methane emissions.
Vietnam, the world's third-largest rice exporter, has a cultural and economic identity deeply tied to rice, especially in the Mekong Delta. This fertile region has ensured food security since 1975. Rice is revered and used in noodles, wrappers, and wine. Markets buzz with motorcycles carrying sacks, while barges transport loads along rivers. Factories process, dry, hull, and pack rice floor-to-ceiling.
Van collaborates with Loc Troi Group, using AWD irrigation to cut water use and methane emissions. Drone fertilization reduces labor costs and ensures precise application, avoiding excess fertilizer and nitrogen gas emissions.
Post-harvest, Van no longer burns stubble, a major regional air pollutant. Loc Troi collects it for sale as livestock feed or for cultivating straw mushrooms. Van benefits through lower costs, stable yields, premium access to European organic markets, and more personal time.
Loc Troi CEO Nguyen Duy Thuan says these methods reduce seed use by 40% and water by 30% and cut pesticide, fertilizer, and labor costs. The company plans to expand climate-smart farming from 100 hectares to 300,000 hectares, but this is below Vietnam's national target of 1 million hectares of 'high-quality, low-emission rice' by 2030. Officials estimate 20% lower costs and over $600 million more in farmer profits.
Vietnam, an early signatory (2021) of the global methane pledge, recognizes the urgency. The Water Resources Science Institute estimates annual industry losses exceed $400 millionāa global concern.
The Delta, producing 90% of Vietnam's export rice, faces extreme climate vulnerability. A 2022 UN report predicts worse wet-season floods and dry-season droughts. Upstream dams reduce river flow and sediment. Rising seas cause saltwater intrusion, worsened by unsustainable groundwater pumping and sand mining.
World Bank President Ajay Banga noted transforming ancient farming is costly, yet methane reduction receives only 2% of climate finance despite its potency. He calls it a "rare, clear area" for replicable solutions, with the Bank supporting Vietnam and Indonesia.
Professor Lewis H. Ziska highlights the importance of better water management and diverse rice strainsāheat-tolerant, water-efficient, or lower-methane. Suppliers like Nguyen Van Nhut report using resilient varieties. Companies adapt to unpredictable rains by shifting to factory drying and planning field-based machinery. "We no longer recognize predictable rainy seasons," Nhut said.
