beneficial insects - Canadian Agronomist

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25 Mar Alfalfa weevil and its parasitoids

Posted at 19:12h in Insects

The alfalfa weevil increased from a minor pest in 2001 to be the principal insect pest of alfalfa in 2014. Its biological control agent Bathyplectes curculionis, a parasitoid wasp, now also occurs in most areas where alfalfa weevil is found on the Canadian Prairies. The alfalfa...

28 Mar Reduce wheat stem sawfly impact with lower seeding rate in solid-stemmed wheat

Posted at 17:26h in Insects

Seed solid-stemmed CWRS and CNHR wheat varieties at 30 to 35 seeds per square foot to maximize stem solidness and reduce the impact of wheat stem sawfly. For hollow-stemmed CWRS varieties and durum wheat, seed at 40 to 45 seeds per square foot. Growing solid-stemmed wheat...