Fertilizer prices and shortages are hamstringing our farmers. But we have other options
When was the last time you bought a loaf of bread?
Nitrogen fertilizer is crucial for global food production, but its price and availability are now impacted by natural gas shortages and geopolitical tensions. Farmers in Australia are particularly vulnerable, as they import a significant portion of their fertilizer. Synthetic nitrogen fertilizer prices closely follow global gas markets, as the industrial Haber–Bosch process to create it needs large amounts of it.
Recent disruptions, like Russia's invasion of Ukraine and the U.S.–Iran war, have led to surging nitrogen fertilizer prices, posing a threat to food security.
While Australia could produce more nitrogen fertilizer domestically, the process is one of the world's largest sources of greenhouse gases, contributing to about 2% of global carbon dioxide emissions. This raises concerns about the environmental impact. Biofertilizers, made from natural materials like compost and animal manure, could offer a more sustainable alternative.
They help plants access nutrients more efficiently and reduce the need for synthetic fertilizers. However, biofertilizers typically contain lower nitrogen concentrations than conventional fertilizers, which means farmers may need to apply more to achieve the same effect. They also have limited availability and effectiveness under certain conditions, making them less predictable than synthetic fertilizers.
To harness biofertilizers' benefits, we need extensive research, long-term field trials, independent testing, and decision-making tools for farmers. As conflicts and climate change challenge our food systems, biofertilizers could play a role in sustainable agriculture, but more information is needed to ensure their effective and responsible use.
Written by urgent.news from Phys.org's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
