Thursday, July 30, 2009

Soybean growth in no-tilled corn fields like this one planted northeast of Glencoe are much shorter than normal for this time of year - Wed July 29.The shots of the two plants below were both taken from this same field.The first plant below has not begun flowering while the plant below that has one flower showing.( Double click on these two photos for a more detailed close-up )There are thousands of acres in this same phase of maturity ( R1 - R2 ) across Southwestern Ontario.Cool night temperatures have delayed flowering by a good week to 10 days this year.Though this has some growers concerned there is really no need to be overly alarmed.Shortening daylengths will trigger flowering and it will occur at a profuse rate.Though the crop in the end may not be as tall as normal there is still a good 15-18inches of growth that can be made in the month of August.Soybeans will generally continue to develop plant height until the week of Aug 20th.The one good thing about shorter soybeans is that there should be very few concerns regarding white mould.Keep in mind that a great deal of the soybean plants yield is yet to be determined.There is still hope for a respectable yielding crop.A week to 10 day delay in flowering should only translate into a maturity delay of 3 possibly 4 days.
No flowers were yet evident on this soybean plant photographed on Wed July 29th.
Only 2 flowers could be found evident on this plant from the same field.Despite flowering being delayed by about a week to 10 days shortened daylengths in the early part of August will trigger profuse flowering and rapid pod fill development will follow suit.From a pure physiological perspective maturity of the crop is really only behind by a few days.I can assure you that soybean harvest will not be overly delayed and opportunities to plant a wheat crop in late September to early October will still occur.

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