Iran’s War on Scarcity: Farmers Turn to Cow Dung, Compost and Other Home‑grown Fertilizers

When the shelves at Tehran’s agricultural supply stores ran empty last spring, the first thing on many farmers’ minds was the next planting season. The reason? A cascade of international sanctions that have practically shut the doors on imported nitrogen‑based fertilizers.

For years, Iranian wheat and rice fields have relied on synthetic inputs shipped from abroad. Those chemicals, now scarce and pricey, have forced a hard look at the soil itself. “We can’t just wait for the world to open its doors again,” says Ali Rezaei, a small‑scale farmer near Isfahan. “The land will not wait for us.”

What follows is a patchwork of old‑fashioned solutions and modern experiments. Cow dung, once relegated to the back‑yard, is now being collected, screened and blended into a nutrient‑rich slurry. Villagers gather the manure in the early morning, let it ferment for a few weeks, and then spread it across their fields. The result? A modest boost in nitrogen, plus a dose of organic matter that improves water retention.

Compost piles, too, have sprung up on the edges of farms that were once dominated by concrete storage silos. Kitchen scraps, wheat straw, and even dried leaves are layered, watered, and turned every few days. After two to three months, the dark, crumbly product is scooped into bags and sold at local markets for a fraction of the price of imported urea.

Beyond the obvious cost savings, there’s an ecological upside. “When we use what the land gives us, we cut down on chemical runoff that pollutes our rivers,” notes Dr. Leila Hosseini, an agronomist at the University of Tehran. Her recent study shows that farms that switched to at least 30 % organic amendments saw a 12 % increase in soil organic carbon over a single season.

Still, the transition isn’t without hurdles. Organic alternatives often deliver nutrients more slowly, requiring farmers to adjust planting schedules. There’s also the labor factor—collecting and processing dung is physically demanding work, especially for older families.

To ease the burden, the Ministry of Agriculture has launched pilot programs in three provinces, offering low‑interest loans for small‑scale biogas digesters that turn animal waste into both fertilizer and energy. The hope is that, in time, such initiatives will create a self‑sustaining loop: waste becomes power, power fuels processing, and the processed waste feeds the soil.

For now, the fields of Iran are a living laboratory. Farmers like Rezaei watch their crops with a mixture of hope and cautious optimism, knowing that every sprout may be a small victory against a larger geopolitical storm.