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Rural producers in Acre already have new guidelines for growing beans in the next harvest. The Ministry of Agriculture and Livestock (Mapa) published this Monday (16), in the Official Gazette of the Union (), an ordinance that establishes the Agricultural Climate Risk Zoning (ZARC) for the cultivation of irrigated beans in the state in the 2026/2027 cycle, indicating the safest periods for planting and the risk levels associated with climatic conditions.
The measure was made official through Ordinance No. 24, signed by the ministry’s Secretary of Agricultural Policy, Guilherme Campos Júnior, and published in the Official Gazette of the Union. The document defines technical parameters that help farmers plan planting with less risk of losses caused by temperature variations, excess rain or lack of water.
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The study considers historical meteorological data from 30 years, between 1992 and 2022, and uses an agricultural simulation model capable of estimating the development and productivity of beans in different climate scenarios.
According to the survey, the bean crop – one of the main sources of protein in Brazilians’ diets – is sensitive to temperature extremes. During the flowering phase, for example, temperatures above 35 °C can reduce productivity, while values below 12 °C can cause flower abortion.
The zoning also points out that the most critical period for the plant in relation to lack of water occurs around 15 days before flowering. Even in irrigated systems, adequate water management is essential to avoid yield losses. Another point highlighted by the document is that the success of production depends not only on the climate, but also on appropriate management practices, such as pest control, choosing cultivars adapted to the environment and soil conservation.
In Acre, the study considers different types of soil and classifies planting periods into three levels of climate risk: 20%, 30% and 40%. Sowing dates and municipalities suitable for cultivation can be consulted on the ZARC online system, maintained by the ministry.
