# Brazilian crop nematode management

> Live situation record from CLSTR: https://clstr.news/situations/brazilian-crop-nematode-management
> Updated: 2026-08-03T18:51:53.000Z. Sources: 5. Developments: 2.

In late July 2026, Brazilian agronomists highlighted a growing threat from the rice root‑knot nematode (Meloidogyne graminicola) that was reducing panicle numbers and grain yields in flooded rice paddies. Biotrop introduced its biological product Biomagno, which colonises roots with beneficial microorganisms to suppress the nematode and stimulate plant vigor.

A week later, attention shifted to soybean production in the Mato Grosso and Goiás states, where nematode infestations were sharply increasing. Growers responded by expanding the use of resistant cultivars, seed treatments and integrated pest‑management practices, with nematicide applications rising about 50 % and the regions leading Brazil in adopting resistant varieties. The broader focus on proactive control across multiple crops underscored a rising concern over nematodes’ economic impact on Brazilian agriculture.

## Timeline

### 2026-08-03: Mato Grosso and Goiás Soybean Producers Boost Nematode Management

Soybean growers in Mato Grosso and Goiás are increasing resistant varieties, seed treatments and nematicide use after nematode damage spikes, with losses estimated at R$ 16.2 billion for the crop.

3 sources. https://clstr.news/cluster/mato-grosso-and-gois-soybean-producers-boost-nematode-management

### 2026-07-28: Rice nematode threatens yields in Brazil, Biotrop launches Biomagno biocontrol

Brazilian rice yields fall due to the root‑knot nematode Meloidogyne graminicola; Biotrop’s Biomagno biocontrol offers preventive, microbial‑based protection, said agronomist Lucas Bruning.

2 sources. https://clstr.news/cluster/rice-nematode-threatens-yields-in-brazil-biotrop-launches-biomagno-biocontrol

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Cite as: Brazilian crop nematode management. CLSTR, https://clstr.news/situations/brazilian-crop-nematode-management