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2016 in review: The long harvest
…for insects, flea beetles were normal, cabbage seedpod weevil were also normal to above average, and late-season threats lygus, diamondback moth and bertha armyworm were almost nonexistent. The few bertha…
Read moreSearch Results for: bertha
Need to spray insects this late?
Bertha armyworm larva (various stages) captured in plastic container. Scouting for bertha armyworm can be tricky when scouting during the heat of the day. Click here to view a short…
Read moreDiamondback moth larvae — Thresholds
Bertha armyworms are like cows. Diamondback moth larvae are like gophers. They both consume plants, but you need a lot more diamondbacks to cause an economic level of damage. Roughly…
Read moreChlorpyrifos – Timeline for cancelation
The Pest Management Regulatory Agency (PMRA) is phasing out the crop uses for chlorpyrifos (in products Lorsban, Pyrinex, Nufos, Warhawk, etc.). These products provide control of bertha armyworm, alfalfa looper,…
Read moreInsect update: Spray or not?
…to use a product with an appropriate pre-harvest interval. Two good follow-up questions. Flea beetles on canola pods. Small berthas. We’ve heard of some fields with bertha numbers that exceed…
Read moreInsect update: Limited threats
Lygus. Credit: Dan Johnson Lygus, grasshoppers, diamondback moth larvae and early bertha armyworms have been reported, as have thrips and swede midge damage, but generally nothing requiring significant widespread action….
Read moreInsect update
…possible when more than one species are feeding on key yield-producing areas — flowers, buds or pods — at the same time. For example, bertha armyworm, diamondback moth larvae and…
Read moreInsect update: Beneficials, CSPW, root maggots
Banchus is a parasitoid of bertha armyworm. It can be harmed by unnecessary insecticide sprays. Source: Lloyd Dosdall Beneficials. Lygus, bertha armyworm and diamondback moth have a number of natural…
Read moreImprove pesticide ROI
…the Tricomalus perfectus wasp. —Some insects, like bertha armyworm, have a density dependence that can trigger and spread biological controls that keep the population in check naturally. We’ve never sprayed…
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