# Mosaic idles Faustina as retail DAP and MAP climb on sulfur costs | Sulfur Wire

> Mosaic has completely idled its Faustina, Louisiana facility while Bartow ran near 40% of target rate. DTN retail DAP averaged $916/t and MAP $959/t in the third week of August, up 8% and 6% year on year. Researchers warned spot sulfur above $1,000/t could push phosphate costs higher.

- Date: 2026-08-28 · published 2026-08-28T12:00:00.000Z
- Category: geopolitics · region US · magnitude medium
- Page: https://feedsoft.ai/events/18196-mosaic-idles-faustina-as-retail-dap-and-map-climb-on-sulfur-costs-sulfur-wire
- Commodities: [DAP](https://feedsoft.ai/c/DAP.md)

## Why it matters

Sulfur is a required feedstock for sulfuric acid used to make DAP and MAP, so sulfur shortages cut phosphate output and keep retail and export prices elevated.

## Read by commodity

- DAP: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| DAP | 2022-05-06 | [Prices of Most Fertilizers Continue Rise, as Wheat Prices Climb on Supply Concerns \| Farm Policy News \| Illinois](https://feedsoft.ai/events/9741-prices-of-most-fertilizers-continue-rise-as-wheat-prices-climb-on-supply.md) | 0.0% | -12.2% |
| DAP | 2026-09-06 | [Sulfur tops $1,000/t as Hormuz and Russia cuts reshape phosphate fertilizer economics — Fertilizer Daily](https://feedsoft.ai/events/17779-sulfur-tops-1-000-t-as-hormuz-and-russia-cuts-reshape-phosphate-fertilizer.md) | +0.9% | +1.3% |
| DAP | 2026-09-30 | [Morocco: sulfur shock pushes OCP into the red - La Minute Arabe](https://feedsoft.ai/events/17791-morocco-sulfur-shock-pushes-ocp-into-the-red-la-minute-arabe.md) | 0.0% | 0.0% |
| DAP | 2026-08-18 | [Sulfur shortage threatens global phosphate supply as Hormuz blockade and Russia ban cut 2 of 3 top sources - Fertilizer Daily](https://feedsoft.ai/events/18198-sulfur-shortage-threatens-global-phosphate-supply-as-hormuz-blockade-and-russia.md) | 0.0% | +0.6% |
| DAP | 2025-07-29 | [Kharif Crisis Brews As China Weaponises Fertiliser Supply Against India - Latest India news, analysis and reports on Newspack by India Press Agency)](https://feedsoft.ai/events/4133-kharif-crisis-brews-as-china-weaponises-fertiliser-supply-against-india-latest.md) | +7.9% | +7.9% |

## Sources

- sulfurwire.com: https://sulfurwire.com/news/sw-intel-20260829-02/

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.