Thursday gave investors reason to cheer, with ideas that US politicians were getting closer to a deal to pass a budget, and remove the threat of a default come October 17, when the Treasury says it will start running out of funds.
Wall Street shares soared 1.6% in late deals, while the average commodity, as measured by the CRB index, gained 0.7%.
'Prices remain well-supported'
And some agricultural commodities did even better.
Cocoa for December closed up 1.0% in New York to $2,729 a tonne, the best finish in 13 months, on data showing a rise of 4.7% in European processing volumes in the July-to-September quarter, which underpinned confidence in ideas of reviving demand.
"The grinding figures for North America will be published in a week's time and are expected to show at least a similarly strong increase in grinding rates," Commerzbank said.
"Against this backdrop, cocoa prices remain well-supported."
Also in New York, raw sugar for March matched the CRB index by closing up 0.7% at 18.72 cents a pound – its highest close in nearly seven months on a spot contract basis.
The sweetener was supported by data from industry group Unica showing a 20% drop in the cane harvest in Brazil's key Centre South region in the last half of September, compared with the first half, and an even bigger fall, of 23%, in sugar production – falls which reflected the impact of rains.
In Chicago, soyoil for December jumped 1.4% to 41.22 cents a pound, helped by short-covering encouraged by data on rival vegetable oil palm oil.
Palm oil stocks in Malaysia, the second ranked producer and exporter, grew far more slowly last month than investors had expected, Malaysian Palm Oil Board data showed.
'Harvest is officially wide open'
Grains, however, struggled, in particular corn, which felt the pressure from "a beautiful fall day allowing harvest progress to continue", CHS Hedging said.
A strong harvest pace, besides reducing crop risk, increases supplies, so weighing on prices.
At Country Futures, Darrell Holaday said: "The harvest is officially wide open and running at full speed.
"The weather models continue to confirm that the harvesting will remain in full swing through the weekend."
Indeed, the pace is so strong that some farmers have been "finishing up" on soybeans "and seeing combines move back to corn", a factor which "will cause some additional harvest pressure" on corn prices, Mr Holaday said.
As an extra depressant, there was talk too that the Environmental Protection Agency may lower mandated US ethanol blending volumes next year to 15.21bn gallons, below the 18.15bn gallons in existing plans.
That would cut to 13bn gallons the requirement for corn-based ethanol.
While investors Agrimoney.com has spoken too had expected a figure below the 14.4bn bushels currently proposed, they had not forecast a number so far beneath this year's 13.8bn bushels.
Corn for December dropped 1.0% to $4.38 ¼ a bushel, a fresh three-year closing low for a spot contract.
Wheat export rumours
Corn's decline did little to help wheat, which closed down 0.7% at $6.85 ½ a bushel in Chicago for December delivery, and down 0.5% at $7.59 a bushel in Kansas City, despite further talk of demand for US exports.
CHS Hedging clocked "rumours that some wheat sales did get booked".
And Benson Quinn Commodities noted "constant chatter about Brazil continuing to shop for US hard red winter wheat, which they have been buying and using with good profit margin".
There is too "continued talk of Chinese demand for US corn, and possibly some buying of soft red winter wheat or white wheat", Benson Quinn said.
Huge EU exports
Still, one country which the US did not receive any business from was Egypt, the top importer, which pulled its latest tender, saying that prices were too high compared with those of futures, as Agrimoney.com revealed.
Sure, that meant that France did not get any business either.
But at least wheat bulls there had a couple of other cards to play, with the results of the aborted tender showing that French offers are now below Russia's, excluding shipping, and not far above Romania's.
Furthermore, the European Union came in with a huge export figure for this week, of 839,000 tonnes, taking the total this season to 7.75m tonnes, compared with 4.2m tonnes a year ago – and a figure which came only hours after a Strategie Grains upgrade to its EU export hopes for 2013-14.
Paris wheat for November closed up 0.6% at E198.75 a tonne.
'Competition for early soybeans'
Back in Chicago, soybeans did best of Chicago's big three, even with a gain of just 0.5 cents to $12.88 a bushel, helped in part by ideas of some US producers having finish the harvest.
In fact, counterintuitively, given that harvest for the great majority of US soybean farmers is not done, mid-October is a seasonally firm period for prices.
Meanwhile, demand is firm too.
Richard Feltes flagged "lots of chatter about exporters/crushers competing for early soybeans."
'Very good crush margins'
Benson Quinn Commodities said: "Soybean processors are seeking supply as demand for soymeal on the export market remains very good, while domestic feeders also want to increase supplies".
Furthermore, "crush margins in China are very good on to-arrive vessels", China being the top importer of the oilseed.