Chinese officials suddenly became very accommodating regarding weed seeds in Brazilian soybean cargoes within days after President Trump announced that he will postpone his summit with Xi Jinping.
A delegation led by the director of the Department of Animal and Plant Health in Brazil's Agriculture Ministry
rushed to China for negotiations with Chinese officials on March 20. They are scheduled to be there through March 29. At least 20 vessels were waiting for completion of procedures before they could depart for China.
A temporary solution has been reached. A
report on a Chinese soybean web site today says that Brazilian officials convinced Chinese authorities that "zero tolerance" of weed seeds is not feasible. A document from the Brazilian ministry said Chinese officials softened their position that cargoes must be absolutely free of weed seeds:
"The competent Chinese authorities have expressed their understanding and acceptance that a 'zero-tolerance' standard for weed content will no longer be applied to soybean shipments imported from Brazil for domestic industrial processing."
This is only a temporary measure until a percentage tolerance can be established through future consultations between China and Brazil. Chinese authorities agreed that phytosanitary certificates can be issued for cargoes that have laboratory test results showing the presence of weed seeds, as long as the cargo is free of chemically treated seeds and live insects.
The previous post on this issue noted that China has a history of blocking shipments using phytosanitary issues as a means of controlling the "pace and timing of imports."
A ban on soybean imports due to a fungus phytophthera coincided with a surge of imports in 2003. Complaints about foreign material in U.S. soybeans came during a surge of U.S. exports in 2017, setting the stage for accelerated shipments of Brazilian soybeans. Another report today says Chinese officials started issuing warnings to Brazil about weed seeds, etc. late in 2025 as Brazilian shipments surged and drove down prices. Brazil is now in the middle of a record harvest and poised to send even more soybeans to China beginning this month.
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Calendar years. USDA/FAS and Brazil trade data.
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Late 2025 was also when China was worried about how additional purchases of U.S. soybeans could be accommodated in the Chinese market. Auctions of reserves were held in December, reportedly to make room for U.S. soybeans purchased after the October Trump-Xi summit. The U.S. beans were expected to arrive in China from March to May. Chinese reports on the Brazilian inspection issue have mentioned that the slowdown in Brazilian exports could create an opportunity for U.S. soybeans.
Less than 1.5 mmt of U.S. soybeans arrived in China during January-February. The rest of the 12 mmt promised by Xi in October will arrive alongside a flood of Brazilian soybeans that will begin with projected Brazil exports of 16.3 mmt this month--70% to 80% bound for China. Now that the Trump-Xi summit originally scheduled for March 31 is postponed, there is no need to make room for another 8 mmt as Xi reportedly promised in a February phone call.
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| China customs data. |
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| Brazil ANEC. |
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