Food & Farming · Saturday, 22 August 2026

01 · Briefing · what happened

Corn tops $5 with this year's crop already made, and a record El Nino aims at the next one

Food & Farming 6 min 20 sources

Field scouts walking the US Corn Belt found yields well below the government's estimate, and December corn crossed $5 a bushel for the first time since February 2025. The crop is nearly finished, so nothing that happens now can make it bigger. And the Met Office says the El Nino forming over the Pacific is the strongest in living memory, timed to peak over the southern-hemisphere planting that would otherwise cover the gap.

$5.01

December corn, per bushel

first time above $5 in 18 months

184.2

bushels an acre found in Illinois

the government's estimate was 212

0.9

days fit for fieldwork in Ohio

down from 5.2 the week before

Pacific warming the Met Office expects

a typical El Nino brings 1C to 2C

At a glance

Field scouts on the Pro Farmer tour put Illinois corn at 184.2 bushels an acre; the government's August estimate was 212.
December corn futures crossed $5 a bushel on Thursday, the first time in 18 months.
The US crop is nearly finished - 29% dented, 4% mature - so its size can no longer be improved, only damaged.
Ohio had 0.9 days fit for fieldwork in a week; Indiana took 7 to 17 inches of rain.
France expects its smallest maize harvest since 1980, and a Lincolnshire farmer calls this the toughest vegetable harvest in 65 years.
The Met Office says the El Nino now forming is the strongest in living memory, peaking over the southern hemisphere's planting season.
Governments are reaching for imports and subsidies, because those are the only levers that work inside a year.

Forces in play

Northern crop shortfall Building↑

scouts found Illinois and Iowa below last year, and France expects its smallest maize crop since 1980

No quick supply answer High→

the northern crop is nearly finished, so no amount of rain or money adds a bushel to it now

El Nino strength High↑

the Pacific is already 2C above normal and the Met Office expects it to pass 3C

Ways to widen the window Easing↑

a rice gene published this week ripens earlier and still yields more, the kind of gain that buys a farmer days

In play Pro Farmer crop scouts — walked the fields and found yields below the government's number USDA — its August estimate now looks high; the survey that counts real plants reports in September The Met Office — called this El Nino the strongest in living memory Donald Trump — waived the beef import tariff for 90 days to push prices down

How it unfolded

July US corn pollinates - the weeks that set the kernel count
Aug 12 USDA puts Illinois corn at 212 bushels an acre
This week crop scouts find 184.2 in Illinois, and both big states below last year
Thursday December corn crosses $5 for the first time in 18 months
Friday the Met Office calls this El Nino the strongest in living memory
Sept-Nov the southern hemisphere plants the crop that would answer, as El Nino peaks

Where this points

Watch USDA's September estimate, the first one built on plants and pods actually counted in the field rather than farmers' reports - if it moves toward the scouts' number, $5 corn stops looking like a scare and starts looking like the level.

Full briefing

Scouts with tape measures, and a number the market believed

This week the Pro Farmer Crop Tour walked the US Corn Belt, pulling ears and counting soybean pods field by field. [2] In Illinois the scouts came back with 184.2 bushels an acre, against 199.6 at the same point last year. [2] A bushel of corn weighs about 25kg. The government’s August estimate for Illinois was 212. [1] Illinois and Iowa are the two biggest corn states, and the tour found both below last year. [2] In Iowa the scouts measured 191.8, 189.7 and 190.6 bushels across three districts. [2]

The market took the scouts’ side. December corn futures crossed $5 a bushel on Thursday, the first time in 18 months and the highest since February 2025. [1] A futures price is what a buyer and seller agree today for grain delivered months from now. It is the number farmers, feed mills and food firms all plan against. December wheat sat at $7.01 and November soybeans at $12.40. [2]

Some of this is not American at all. France expects its smallest maize harvest since 1980, and attacks in the Black Sea have slowed Ukraine’s grain exports to a trickle just before its own corn harvest. [1]

The size of this crop is already decided

Here is what makes the move stick. By 16 August, 76% of the US corn crop had reached the dough stage and 29% had dented, both ahead of the five-year average, and 4% was fully mature. [3] Corn sets its kernel count while it pollinates in July, then fills those kernels over the following few weeks. That work is done. Rain now cannot add a bushel to the 2026 crop; it can only take some away.

The fields are not even reachable. Ohio had 0.9 days fit for fieldwork in the week to 16 August, down from 5.2 the week before and 6.3 a year earlier, with half its topsoil rated waterlogged. [5] Indiana had 1.9 days, after 7 to 17 inches of rain from Winamac down to Richmond wiped out whole fields. [6] Ten of the 18 big corn states reported no mature corn at all. [4] Iowa, forecast to be one of the three highest-producing states this year, had none either. [7]

The next honest read is weeks away. USDA’s August number came from asking farmers. The survey that counts real plants and pods only starts work in late August, and reaches a forecast in September. [9] Winter wheat, meanwhile, is 96% cut and effectively finished for the year. [8]

Europe has already spent its year

In Britain the weather was the opposite and the result is the same. Mark Nundy, who grows cabbage, cauliflower and broccoli near Boston in Lincolnshire, calls this the toughest harvest in the 65 years his family has farmed there. [13] Many of his plants are half the size they should be, after eight weeks with no real rain. [13] Greater Lincolnshire grows roughly an eighth of England’s food and up to 30% of its vegetables. [13]

In Suffolk, Andrew Long lifted his onions three weeks early and reckons the crop is about 40% down. [14] Most of what came out measures 40 to 60mm across. Supermarkets ask for 60 to 80mm. [14] So a shopper may need to peel three or four onions to replace one. [14]

The rivers are low with them. The Rhine gauge at Kaub read 14cm on Wednesday, up from 5cm but still near a record low. [16] German industrial output falls about 1% when that gauge holds under 78cm for a month, the IfW institute reckons. [16] On the Danube, Hungary’s prime minister Peter Magyar has warned this drought will cost more than the 2022 one. [17] A farmer at Pocsmegyer says he has lost close to half his harvest. [17]

One more clock is running. Bluetongue, a virus carried by midges that kills sheep and leaves cattle infertile, has reached Scotland: four farms near Creetown inside a week, against 439 cases in England. [15] Vets report the vaccine in short supply, and it has arrived exactly as farmers prepare to sell breeding animals. [15]

The forecast that matters is for a crop nobody has planted

On Friday the Met Office said the El Nino now forming in the Pacific is likely the strongest in living memory. [10] El Nino is a natural warming of the eastern Pacific that comes round every two to seven years and shifts rainfall worldwide. Sea temperatures in the key patch are already more than 2C above normal, and the Met Office expects them to pass 3C. [10] That would be unmatched in records back to 1950 and probably the largest event since the 19th century. [10] A typical El Nino lifts them 1C to 2C. [11]

“I have never seen an El Nino signal this intense in our forecasts,” said Adam Scaife, who runs long-range forecasting there. [10] India’s monsoon is already below average and Atlantic hurricanes are running quiet, both classic signs. [10] The US Climate Prediction Center puts the odds of a very strong event this autumn and winter above 90%. [12]

That is the season Brazil, Argentina, Australia and West Africa plant and grow the crop that would otherwise cover the northern shortfall. Every strong El Nino in the past 55 years has cut cocoa output, the investment firm WisdomTree found. [12] Citi expects dry weather in Vietnam and Indonesia to cut their coffee harvests. [12]

What governments can still reach

Inside a year the only levers that work are trade and money. President Trump said on Friday he would let 300,000 tonnes of ground beef in without the out-of-quota tariff for 90 days, sold at 25% below the current $6.89 a pound. [19] He gave no detail on which countries it comes from or how the discount would be delivered, and ranchers were unhappy. [19] Egypt went the other way, widening its cash food subsidy beyond oil, sugar and pasta to cover meat, grains, tea, milk, lentils, eggs, beans and poultry. [20] About 60 million Egyptians hold the ration cards it runs on. [20]

The quiet one

A team published a rice gene this week aimed at the thing all of the above runs into. Growing a heavier grain usually means growing for longer, which is a real cost where farmers fit two or three crops into one year. [18] The TGW1a locus makes the plant flower earlier and set heavier grain at once, after the researchers separated it from a neighbouring version that cut grain number. [18] More rice, in less time.

It is one paper, in one crop, years from anybody’s field. But it is pointed at the constraint underneath this whole week: not the land, not the seed, not the money. The calendar.

02 · Lesson · why it matters

Why a farm cannot work overtime

Some jobs only work in a short slot the calendar picks, so being late is not slower work - it is a year gone.

How it works

A crop's size is set in a few weeks
The calendar picks those weeks, not you
Miss them and there is no working late
So a shortage cannot be answered this season
Everyone waits for the window to come round

The twist

Most shortages get answered by working harder; one set by a calendar can only be answered by waiting for the calendar to come round again.

Where you've seen this

Vaccination

protection has to be built before the season starts - once the disease is at the gate, the option has expired

Space launches

a probe leaves in a short window or waits years for the planets to line up again

Building work

the roof has to go on before winter, or the site sits idle until spring

School years

a year missed is not made up by studying faster later

The catch

Windows can be widened - by storage, by trade, by breeding a crop that finishes sooner - which is exactly why so much money goes into moving a date by a week.

Full lesson

The number that stopped moving in July

A price rose this week because of something that happened five weeks ago.

Corn decides how many kernels it will carry while it pollinates, over roughly ten days in July. It then fills those kernels and shuts down. By mid-August most of the US crop had dented and some was fully mature. Whatever the weather does now, the 2026 crop is the size it is.

That is a strange kind of scarcity. A factory short of output can run a night shift. A shop can order more. A field cannot. The work had an appointment, the appointment passed, and no amount of money, rain or effort reopens it.

An appointment, not a deadline

We are used to deadlines. A deadline is a line you can cross late and pay a penalty. A window is different: on one side of it the work is possible, on the other side it is not, and there is no partial credit.

Almost everything on a farm is built out of windows. Spray after the disease sets and you have paid for the chemical and bought nothing. Vaccinate after the midges arrive and the animals were already bitten. Drill winter wheat too late and the plant goes into the cold too small. The Suffolk grower who lifted his onions three weeks early did not lose three weeks. He lost about 40% of the crop, and most of what he did get is too small for the size a supermarket asks for.

The window is often shorter than the season

Here is the part that surprises people. The window is not just weather - it is also whether you can physically get on the ground.

One Midwest state had 0.9 days fit for fieldwork in a week. Not 0.9 days of bad weather: 0.9 days when a machine could go out at all. Its neighbour had 1.9, after rain measured in feet. The season was seven days long. The window inside it was one.

That is why farms own machines that sit idle eleven months a year. You are not buying a machine. You are buying the ability to do a job in the days it is possible.

The size chart is somebody’s choice

Notice what turned the onion grower’s small harvest into an unsellable one. Not the drought - the specification. Sixty to eighty millimetres across is a number a buyer wrote down, and it feels like a fact about onions. It is a decision about pallets, peeling machines and what a shopper expects to see.

That arrangement is not villainy. Standard sizes are why food moves cheaply and why a shop can promise you the same bag twice. But it means a grower carries the weather risk and the shape risk together, while the buyer carries neither. When the window closes early, the arrangement decides who eats the loss.

Everyone waits for the same clock

Because this year’s answer is closed, attention jumps to the next window. That is the southern hemisphere, planting through September to November. Which is exactly when the Pacific warming now building is forecast to peak.

So a shortfall in Illinois and a forecast about ocean temperatures become one story. Not because they cause each other, but because the only cure for the first arrives during the second. An importing country waiting on cheaper grain, a government waiving a tariff, a shopper watching a bill. They are all outside the same door, and it opens on a schedule none of them set.

What it costs to hold a date

We spend enormous effort widening these doors. A silo is a machine for stretching a harvest across a year. A ship is a machine for borrowing another hemisphere’s window. This week a team published a rice that flowers earlier and still makes heavier grain - decades of work to buy back a few days.

That effort is the measure of the thing. If windows were a small problem, nobody would spend a career moving a date by a week.

And it is worth sitting with how little any one person sees of it. A grower knows their own fields and their own ten days. They do not know what the ocean will do in December. They do not know a buyer’s size chart in March, or which continent growing their crop gets rain. Everyone in the chain is making a confident decision inside a window they can see, about a system that runs on windows they cannot.

03 · Lab · your turn

Six Weeks, One Crew

Rehearse a season where every job has its own short window, and feel why the biggest job is not always the one to do first.

04 · Hope · carry this

People have spent centuries prying those windows wider - with silos, with ships, and now with a rice bred to ripen early and still yield more. Every week won back is a week the weather can no longer take.