As fall sets in to Manitoba, growth in most pastures is slowing down.

John McGregor, extension support person for Manitoba Forage and Livestock Association, says fall pasture management is something producers should be thinking about in late July or early August because at this point, most plants have basically stopped growing.

He says if producers want to graze as long as possible, they should now only select pastures that have very good growth, so that grazed pastures can catch up to survive winter and spring.

"The grasses need a period of time where they can actually produce enough green material so they can accumulate the carbohydrates in the roots and in the crown of the plants that will get them through the winter," he says. "The plants don't stop growing in the winter, they still breathe and use energy."

He also reminds producers to keep an eye out for birdsfoot trefoil, a common legume found in pastures.

"You need to take a look at that and see if it's set seed," he says, "and if it hasn't, don't graze it until after the pastures stop growing. You need that seed because birdsfoot trefoil is short-lived."

With plant growth slowing, McGregor says right now isn't really a good time to fertilize.

"When it comes to nitrogen, if you're putting it on at this time of year, you've got to remember a lot of that might just gas off into the air, or in the spring when we get the run-off and the snowmelt, you could get a lot of leaching or nitrogen moving off the field," he says.

McGregor also suggests producers test pasture soil when thinking about fertilizing.