The significance of Brazil's corn and soybean production is a topic that deeply intrigues us and fuels ongoing debates.

Just six months ago, delays in soybean planting caused a spike in soybean prices, only for the market to retract as conditions improved. Such estimate fluctuations and discussions are a familiar sight among our southern neighbors. Yet, what's particularly fascinating now is the perspective offered by both the USDA and Conab.

Last week, both Conab and the USDA released their crop production reports simultaneously—Conab's in the morning and the USDA's in the early afternoon.

This adjustment led to corn production estimates of 110.96 MMT and soybeans at 146.52 MMT.

Estimates diverge

Here's where the plot thickens. Historically, at least over the past 15 years, the USDA and Conab have been closely aligned in their estimates.

From 2010 to 2021, the largest observed difference was 1.29 MMT for corn and 3.7 MMT for soybeans. Interestingly, in four of those years, the discrepancy between the USDA and Conab was less than 0.05 MMT.

However, starting from 2021, this gap has gradually widened, culminating in the current substantial difference. What factors have contributed to this divergence? Given advancements in technology and reporting methodologies, one would expect estimates to converge rather than diverge.

Who is on point?

Now, the pressing question arises—whose estimate will ultimately prove to be more accurate? There's no guarantee of alignment between the estimates. The gap may persist throughout the year. If you're optimistic, you might lean towards Conab's figures, expecting a downward revision by the USDA in the months ahead.

Personally, I'm skeptical of Conab's recent reduction in corn yield, considering favorable planting conditions and lingering uncertainties about growing conditions. While the safrinha corn crop has yet to mature, I question whether a 1.7% yield reduction is justified at this stage.

Nevertheless, the market will diligently track this significant discrepancy in the months to come. Will Conab's estimates be vindicated? Or will the USDA's report stand as the more accurate portrayal?

Regardless of the outcome, the credibility of either report could face enduring scrutiny.

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