Map analysis shows that seeds received by Brazilians contain pests that do not exist in the country

Part of the samples analyzed so far presented a phytosanitary risk to the country

26.11.2020 | 20:59 (UTC -3)

The Ministry of Agriculture, Livestock and Supply (Mapa) has so far analyzed 36 samples of unsolicited seed packages that arrived via post at Brazilians' homes and were sent to Mapa. Analyzes carried out by the Federal Agricultural Defense Laboratory in Goiás (LFDA-GO), a reference in plant health, indicate that part of the samples contain the presence of more than one pest in their content.

In total, 47% of the samples already analyzed presented a phytosanitary risk to the country. After phytosanitary risk assessment, carried out by the technical area of ​​the Department of Plant Health and Agricultural Inputs of Mapa, it was identified that a sample contained the species Myosoton aquaticum, a pest absent in Brazil and with the potential to be considered quarantine, that is, with a risk of establishing itself in the country and causing phytosanitary damage. This species is resistant to herbicides, which makes its control difficult. The introduction of this weed into the country could have a negative economic impact.

In four samples, an absent quarantine species was identified - Descurainia sophia - considered a weed in the United States and Canada, as well as an invasive plant in Mexico, Japan, Korea, Chile and Australia. Already the Myosoton aquaticum It is considered a weed in China's wheat fields.

Another 15 samples contained genera that have quarantine species or species with quarantine potential, such as Cuscuta seeds; from Brassica; from Chenopodium; from Amaranthus; and Cladosporium fungi; Alternate; Fusarium; and Bipolaris. 

“After laboratory analyses, it can be assessed that the introduction of propagation material (seeds or seedlings), even in small quantities, without meeting the phytosanitary and quality requirements established by Mapa, puts Brazilian agriculture at risk”, highlights the director of Department of Plant Health and Agricultural Inputs, Carlos Goulart. 

The import of plant propagation material, including seeds and seedlings, is authorized by Mapa only from origins for which Brazil has already established phytosanitary requirements that must be met. The rules established by the Ministry apply to any type of purchase and acquisition, including electronic purchases with delivery via postal shipment.  

The list of products with authorized import is available for free consultation at the following website: 


Mapa is alerting Brazilian citizens to be careful and not open parcels of unsolicited seed packages received by the post office.  

If citizens receive seeds from abroad at home, the Ministry directs the delivery of the material to one of the Mapa units in your state or state defense agency. The package must not be opened or discarded in the trash, in order to avoid the seeds coming into contact with the soil and causing damage to agricultural areas and the environment.  

The guidance also applies to citizens who received and planted the seeds. In this case, contact Mapa or the state defense agency to schedule the collection of the material.

Mosaic Biosciences March 2024