It has passed.
The date, that is, of May 15 when US
Whatever, a good chunk of corn has not been sown within the optimal window (just how much data from the US Department of Agriculture after the close will reveal) and the chances of getting much more in over the next few days have weakened with a change in forecasts for the wetter.
The weekend brought damp notably for the eastern Corn Belt, where farmers have been particularly behind in sowings.
And "weather models shows the low that is trapped in the atmosphere over the eastern third of the US is not going to go anywhere anytime soon", WxRisk.com.
Later in the week, a fresh low will develop over western Colorado "that will track north east into the Upper Plains into the Dakotas by Thursday", slowing spring
It will also bring "another round of significant heat for the portions of the lower Plains at the end of this week into the weekend with 90+ degrees Fahrenheit temperatures likely", not so good for drought-stressed winter wheat.
And the outlook isn't so bright for Europe either.
"All of the weather models have turned drier with all of France, Germany, Poland, Austria, Hungary all of Belarus and the Ukraine seeing only 25-50% of normal rainfall in the day one-to-five and in the six-to-10 day time frames,"WxRisk.com said.
Agritel said: "The weather is expected to remain dry in Europe, and most crops are now impacted to some extent, especially in France."
Add to this some freezing US temperatures over the weekend, a potential setback to seedlings, and the stage was set for a more upbeat start to the week for prices.
Chicago corn gained 1.8% to $6.94 ¼ a bushel for the July contract, now in the spot position, as of 07:20 GMT (08:20 UK time) with its wheat peer up 1.3% at $7.37 ½ a bushel.
Soybeans, which are later sown, added 0.5% to $13.35 ½ a bushel for July.
Also in crops' favour, and notably corn's, was the selldown that speculators have already undertaken over the last few weeks, meaning that the potential for further sales is only modest.
Large funds sold nearly 35,000 contracts in the week to last Tuesday, regulatory data late on Friday showed, bringing the total over the past three weeks to more than 75,000 lots.
And it is not only agricultural commodities that have been out of favour this month, of course, with metals also sold, and notching up further small losses on Monday, against a backdrop a marginally firmer
Indeed, weather appears to have separated crops from another risk-off day in external markets, with the arrest of Dominique Strauss-Kahn, the International Monetary Fund head, on sexual assault charges adding to a tendency to shift to safer assets.
Japan's Nikkei share index closed down 0.9%, with Shanghai stocks shedding 0.7%.
"Hedge funds have been wounded over the course of the last couple weeks" in commodity market investments, Brian Henry at Benson Quinn Commodities said.
"It's likely some of these funds are having a hard time getting off the mat since the energy markets fell apart."
New York's July contract gained 0.5% to 145.84 cents a pound, with the new crop December lot up 0.1% at 115.74 cents a pound.