Brazil soy to China: growth pace loses steam in March

What matters about March 2026 for Brazilian soy is not the level — still positive — but the second derivative. Month-on-month export growth to China dropped from +352% in February to +91.4% in March: a deceleration of 260 percentage points in a single month.

Velocity, not direction

Deceleration is not contraction. Soy exports are still growing in absolute terms — +91.4% month-on-month is a strong number for any commodity. The signal here is that the curve is bending. A negative second derivative of 260 pp suggests the momentum driving February's jump is dissipating.

For analysts with exposure to the sector, this is the kind of signal that precedes reversals or plateaus. It does not confirm a downward trend — it flags Q2 as a period requiring close monitoring.

What may be driving it

February was anomalously strong. The +352% MoM pace was above historical pattern for the period and likely reflected shipment frontloading — a typical behavior when Brazilian exporters perceive favorable FX windows or when China signals urgent demand ahead of holidays (the Lunar New Year in February tends to compress logistics calendars).

March, therefore, may represent a return toward normal pace rather than genuine demand deterioration. Context matters: the 2025/26 Brazilian crop is projected as a record (above 165 million tons), expanding exportable supply. Chinese demand, meanwhile, is under pressure from domestic crush margin compression.

The second derivative as a tool

Acceleration/deceleration reads are more actionable than absolute levels for short-window operators. A +91.4% MoM print after +352% is normalization, not weakness. But if the next data point shows growth below +30%, the pattern shifts from "normalization" to "structural deceleration."

The Brazil–China soy corridor is Brazil's largest by both value and volume. Velocity changes in it ripple through FX formation, domestic pricing, and port terminal capacity.

Implications for you

For exporters:

• Do not interpret March normalization as a signal to reduce position — the record crop keeps exportable supply available for Q2; verify whether April–May forward contracts already cover projected volume;
• Monitor Chinese crusher crush margins over the next four weeks — compression would confirm buyer caution.

For importers:

• Chinese buyers who frontloaded orders in February may have negotiating room on April cargoes — slower growth rate suggests less near-term urgency;