The Tiny Organisms Transforming Farming | Karsten Temme | TED

Quick Overview

Karsten Temme, founder of Pivot Bio, presents a solution to the environmental and economic drawbacks of synthetic nitrogen fertilizers by utilizing microbes that naturally fix nitrogen from the air, allowing farmers to drastically reduce fertilizer use while maintaining or increasing crop yields, as demonstrated by pilot farms in the US and Brazil.

Key Points: Synthetic nitrogen fertilizer is the greatest tool humans invented to grow more on the same land, but it results in significant environmental costs, including nitrogen runoff causing over 500 dead zones. Pivot Bio genetically engineered microbes to perform nitrogen fixation (converting atmospheric nitrogen into a usable form for plants) and introduced them to seeds, making them available to farmers in a dry powder form. In 1950s US farming, 2,600 kilos of corn per hectare required 120 kilograms of nitrogen fertilizer per acre, a costly and environmentally damaging input. Farmers like John in Michigan, using Pivot's microbes, reduced nitrogen fertilizer application by 25% while maintaining yields, and Brazilian farmer Charles achieved similar results, increasing profitability. Since 2022, farmers using Pivot's microbes have avoided over 1,300,000 metric tons of CO2e, equivalent to turning off 3.4 gas-fired power plants for a year. The company is building a global network for microbial manufacturing to make the product scalable and accessible, aiming to reduce reliance on foreign chemical supply chains.

Context: Karsten Temme, founder of Pivot Bio, discusses the critical role of soil microbes in sustainable agriculture during a TED Countdown Summit presentation. He contrasts the effectiveness and environmental harm of conventional synthetic nitrogen fertilizers with his company's bio-engineered solution: microbes that naturally fix nitrogen directly into the soil for the plants, thereby revolutionizing farming practices globally.

Detailed Analysis

Karsten Temme introduces the problem of conventional agriculture's reliance on synthetic nitrogen fertilizer, which enables high yields but causes severe environmental damage, citing the creation of over 500 dead zones globally due to runoff. He contrasts the historical need for massive fertilizer inputs (e.g., 120 kg/hectare for 2,600 kg/hectare of corn in the 1950s) with his company's solution. Pivot Bio genetically engineered microbes to perform nitrogen fixation, which they then coat onto seeds. This allows the microbes to live alongside the plant roots, sense the plant's nitrogen needs, and convert atmospheric nitrogen (which is 78% of the air but unusable by plants) into usable forms, essentially acting as a sustainable fertilizer factory. He shows positive results from farmers like John in Michigan, who reduced fertilizer by 25% while maintaining yields, and Charles in Brazil, who saw increased profitability. The impact is significant: since 2022, farmers using Pivot's microbes avoided over 1.3 million metric tons of CO2e emissions. Temme concludes by stating the next step is scaling this technology globally through a network of microbial manufacturing facilities to create resilient, efficient, and profitable farming systems that work with nature rather than against it.