South America Calling 12/04 05:00
Early Corn, Soybeans Drying Out in Southern Brazil
Precipitation during the next several weeks is going to be paramount to the
record production forecast for Brazil soybeans as they enter flowering stages
of growth. Full-season corn is also hoping for good rains as it enters
Planting for corn and soybeans got off to a voracious start in Brazil this
season. With the threat of La Nina delaying the start of the wet season in
central Brazil and the outlook for drier weather overall in southern Brazil,
producers got a huge jump on good conditions to the start of the season when
For the most part, the weather cooperated in that endeavor. The threats of
La Nina just were not there in the early spring. The wet season started on time
and picked up very quickly in October in central Brazil. Showers since then
have been very regular and with good intensity, a stark contrast to last year
where producers were about a month behind. Over southern states, precipitation
was very generous in September and much of October, building up a little soil
moisture early enough to convince producers to plant before La Nina dryness
took it all away.
Well, November started to turn southern areas back into La Nina mode. The
forecast through the end of December shows only small chances for showers in
this region. Soil moisture reserves were small to start with and November
started to drain them quickly. December then, is going to be especially rough
for much of this region. Those early planted corn and soybean crops are getting
into their reproductive stages of growth. Most of the crop is in good condition
now, but the dryness during the last few weeks has started to take its toll on
Without adequate soil moisture reserves, crops are starting to run out of
readily available moisture during the more critical stage in the crop's life
While the forecast for December is not completely devoid of precipitation in
most areas, it is close. During the next two weeks, the latest run of the
American GFS model has less than 10 millimeters (0.40 inches) for Rio Grande do
Sul and up to about 30 mm (1.18 inches) in Parana. Soils in Rio Grande do Sul
tend to have more sand in them, and do not have much capacity to hold excess
water. So, timely rains are going to be important. That does not look to be the
case for the next two weeks, and the last two weeks of the month are not
But planting in this part of the country is very spread out. Soybeans are
still only about two-thirds complete as producers look to more likely rains as
La Nina wanes later this summer and the prospects for better rains return to
So, while there will be an effect on a portion of the crop, there is still
ample time for rains to return for the rest of the crop.
Central Brazil also looks to continue its streak of good rains. Soil
moisture is more than adequate for almost the entire states of Mato Grosso,
Goias, and Minas Gerais, and much of Mato Grosso do Sul as well. These areas
comprise roughly half of all production of corn and soybeans in the country.
The good start to the first-crop corn and soybeans combined with the forecast
for continued good weather for the start of their second-crop corn is likely to
offset the downturn farther south. The conditions still support record
production for both crops of 118 million metric tons (mmt) of corn, and 144 mmt
of soybeans from the USDA. Brazil's record for corn came in the 2019-20 season
with 102.6 mmt and for soybeans came in the 2020-21 season with 138 mmt.
There is still a lot of season left to go. Early planted corn and soybeans
in southern areas are going to find some harsh conditions for the next few
weeks. But a lot of the crop in central Brazil should have good conditions and
later-planted crops have a chance at some better weather once we get into 2022.
So, this month will not have a do-or-die aspect for the total production from
Brazil, but it will not be a non-significant impact.
Get a full rundown on the 2022 outlook for weather affecting South American
crop areas during the DTN Ag Summit, Dec. 5-7, in Chicago. Visit
www.dtn.com/agsummit for more details about the summit and to register.
John Baranick can be reached at email@example.com
(c) Copyright 2021 DTN, LLC. All rights reserved.
Your local weather forecast from DTN can be sent to your email every morning free through DTN Snapshot