Seeds need coats for cold weather

A 30-acre Nu Trax P+ plot in a 130-acre irrigated wheat field yielded seven extra bushels per acre last year.

The trial took place near Purple Springs, Alta., and was conducted on the family farm of Lindsay Brewin of Wolf Trax.

Brewin said 100 acres of the circle received the recommended rate of 110:35:40 incorporated as granular May 13. On the other 30 acres, she replaced the 35 pounds of granular phosphorus with two lb. of Nu Trax P+ coated onto the nitrogen and potassium prills at her local dealer.

The process eliminated 33 lb. per acre from the cart. On May 17, they seeded Sedash spring wheat. Emergence was slow throughout the region because of cold spring temperatures.

“Plants in the treated area emerged first and looked healthier throughout the whole season,” said Brewin.

She went out at seven day intervals to do plant counts, weigh the plants and take pictures.

“We had 40 percent hail damage on July 6. Right after the hail, we had more plants standing on the treated plot than in the control area. And the treated plot recovered faster, probably because they were healthier to begin with.”

The combine moved into the circle on Sept. 14. They weighed the grain from the two areas to obtain a more accurate picture of any yield difference.

“There was a seven bu. yield benefit in the Nu Trax P+ treated area.

“We used two lb. of Nu Trax P at $7.50 per lb., so that cost us $15 per acre.”

The MAP that Nu Trax P+ replaced may have cost slightly more than the Wolf Trax product, but not enough to make a big difference, which figures in as a wash.

The dealer charge for applying Nu Trax P+ to the granular fertilizer would likely have been about the same as the charge for blending in the MAP, so that’s another wash.

For all intents and purposes, it’s fair to say there was no significant difference in the input costs of MAP and Nu Trax P+, and it was a small trial.

For more information, contact Brewing at 587-220-1711 or visit



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