The Ministry of Agriculture and Livestock (Mapa) of Brazil has introduced the Agricultural Zoning of Climate Risk (Zarc) for rye crops, providing information on suitable sowing periods and municipalities for growing rye in nine states and the Federal District. The Zarc was developed with the production sector's demand, considering climate risks such as frost, water deficit, and excess rain. Rye, which is suitable for both human and animal consumption, has seen a decline in cultivation due to changes in eating habits and lower productivity compared to other cereals. However, there has been increased interest in rye due to its hardiness and adaptability to chemically poor soils and drier environments. The Zarc can be accessed for free on the Zarc Plantio Certo mobile app.