Insects

Insecticide control at the bud stage is rarely effective or economical even when counts are 15-20 per 10 sweeps. Under good growing conditions, canola

Probably too early to spray cabbage seedpod weevil, diamondback continue feeding, bertha moth numbers are high in some regions, cutworms near the end but

Begin sweep netting for cabbage seedpod weevil when canola enters the flowering period. Select 10 locations within each field and at each location, count

Leaf rollers probably aren’t worth controlling. Wireworms will live up to 4 years as a larvae and will feed on canola. Bertha monitoring begins.

Cutworms can leave canola fields with bare patches, clipped plants and large chunks out of stems and leaves. Flocks of birds — crows, gulls,

Before spraying for diamondback moth larvae, make sure that: 1. Large areas within the field have reached the nominal threshold of 25% or more

Add diamondback moth larvae to your early season scouting list. Growers cannot expect insecticide seed treatment to protect canola from diamondback moth larvae, so

Diamondback moth and flea beetle damage can look similar in some cases. So can wireworm and cutworm underground feeding. Look for the damage and

If an insect or disease threat is present at economic thresholds and within the weed control window, applying herbicides with other pest control products

Keep it simple — compare only treated and untreated strips. Mark the strips and take them to yield. Do an economic analysis. Work with

You maybe went to a field to scout for flea beetles, but take time to look around. Consider all possible causes when you notice

Gophers can eat up large areas within a canola field. Strychnine baits and, in some jurisdictions, mix-it-yourself strychnine liquid is available for gopher control.