Home Crop Monitoring Canola School: Pay attention to pre-harvest intervals

Canola School: Pay attention to pre-harvest intervals


As swath timing and harvest strategy, it’s time to pay shut attention to pre-harvest intervals.

“PHI or pre-harvest interval is a really important concept to understand, and it’s actually a really easy concept to use,” says Keith Gabert, agronomy specialist with the Canola Council of Canada, on this episode of Canola College.

“The labels are really specific about the number of days between the time you apply a product, and the time that you’re allowed to cut it — swath it, or combine it, doesn’t matter,” he says. What confuses some folks is the time period pre-harvest interval, in that it’s truly the time of utility to the time you’ve got ceased development in that crop, at that ends at swathing.

PHIs are necessary for merchandise comparable to pesticides, that could be utilized late within the season, or for harvest aids which might be utilized as a part of a dry-down course of or for per-harvest weed management, says Gabert.

Insecticide PHIs vary from 28 days, to at some point. Harvest aids, have a tendency to be much less days than an insecticide, nevertheless it’s necessary for growers to perceive the variety of days they’re required to wait to do one other operation in that discipline. (Story continues under video)

Gabert recommends studying the product label, or trying out the Canola Council’s spray-to-swath calculator, on their web site.

PHIs make sure that the residue from a product may have both dissipated or have been diminished to negligible ranges, or ranges which might be thought-about protected to the buyer, by harvest time.

“While you might consider yourself a canola grower, really you’re a canola meal grower, or canola oil grower, you’re providing food for people all around the world. We want to make sure that that food is safe, healthy, nutritious, and meets any of the covered requirements for the product that you’ve used, on that product while you’re growing it.”

One of many challenges to assessing canola is ensuring the crop is uniformly mature and that the crop is way sufficient alongside, says Gabert. Thirty per cent seed moisture of the crop is the final advice, however product to product, the crop wants to be at that moisture stage, or drier, earlier than the product might be utilized.

Seed color change, and seed moisture might be fairly completely different, however regardless, Gabert says to open the pod up and assess. For swathing, 60 per cent seed color change is the time to get into the sector.

Search for the greenest elements of the sector and ensure these areas have reached the focused moisture, for swathing or making use of a harvest assist.


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