Manitoba's corn crop has reached the early dent stage.

Pierre Lanoie, agronomist with Monsanto Canada, explains how much longer the crop has to go before harvest.

Pierre Lanoie

"From early dent, to get to black layer, which is the physiological maturity, which is the stage where the corn basically has reached its maximum yield potential, you need between 25 and 30 days."

Lanoie notes we need about another month or so without a killing frost in order to reach maximum yield capacity. He adds it takes about two weeks to reach the half milkline stage from the early dent stage. Once the crop reaches the half milkline stage, a killing frost will still produce a quality crop, with yield losses ranging in the area of about five to ten per cent.

It will take about another two weeks to reach the black layer stage from the half milkline stage.