CROP SCENE INVESTIGATION – 37: What caused the yellow spots in that winter wheat? – SOLVED


The yellow spots identified in wheat fields last spring by Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA) cereals specialist Peter Johnson were caused by sulphur deficiency.
Tissue sampling revealed that green, healthier plants in other areas of the field tested much higher for sulphur levels than the yellow plants. The diagnosis was confirmed when Johnson applied sulphur to test strips of yellow plants.

Roundup Ready 1 rarity in this year’s seed lineup


The patent has expired on the original Roundup Ready soybean seed, launched by Monsanto 15 years ago, and growers are free to buy it in 2012 and save it for next year. The tricky part might be finding a company that will sell you that seed.

“Most have transitioned to Roundup Ready 2 because that is what growers want,” says Trish Jordan, spokesperson for Monsanto Canada, which won’t be selling Roundup Ready 1 anymore.

CROP SCENE INVESTIGATION – 37: What caused the yellow spots in that winter wheat?


Every spring, Peter Johnson sees yellow spots. It’s just one of those things that happens in winter wheat, says the Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA) cereals specialist.

The reason for those lighter-coloured areas in wheat fields is almost always manganese deficiency, particularly on sandy soils, muck soils and high organic matter soils. But, in 2011, many of the spots left Johnson scratching his head, searching for an explanation.

Jerusalem artichokes and empress trees – new crops with potential

Though they are barely at the starting gate in Ontario, both show promise if market demand for biofuels continues to grow. But both also need processors to get them off the ground



Larry Whetstone’s business is selling inulin, a type of sugar derived from chicory crops in Europe, but he’d rather be selling inulin produced from Jerusalem artichoke crops in North America.

CROP SCENE INVESTIGATION – 36: The case of the disappearing nitrogen


Whenever you plant soybeans no-till into first-time soybean ground, there’s a high probability that nodulation will not take place. That’s a message that agronomist Paul Sullivan preaches every spring.

It certainly was a key point for Kelvin, an Ottawa area grower who converted a long-time hay and pasture farm to soybeans in the spring of 2011. In his conversations with Kelvin, Sullivan emphasized the need for scouting first-time soybean fields in early July and checking the roots for nodulation.


Five of the row units on Karl’s six-row planter had developed an inch and a half gap between the gauge wheel and the frame. This loose assembly allowed dirt to get into these gaps and caused the gauge wheels to lift on five of the units during planting.

Pioneer Hi-Bred agronomist Scott Fife explains that the lifting motion caused the five affected row units to have a different planting depth than the row unit that worked properly.


© AgMedia Inc. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Subscribe to RSS - Crops