Achieve effective pre-em weed control while protecting the crop at seeding

FMC’s tech specialist, Mark Yerbury and ICAN’s herbicide technology expert, Mark Congreve provided their expertise on the way different products behave and what factors to consider when utilising these herbicides, particularly with a dry start to the season.

Greg Condon

Greg is the WeedSmart southern extension agronomist (Vic and NSW) and is based in Junee, NSW. He runs Grassroots Agronomy with his wife Kirrily Condon. Greg works with growers and industry groups and is passionate about profitable farming systems. Connecting innovative growers with agronomists, stakeholders and researchers is a major focus of Greg’s extension role.

Mark Congreve

Mark Congreve has over 35 years’ experience working with herbicides and herbicide development. During the past 10 years Mark has trained over 2000 advisers nationally on how herbicides interact with the environment in where we place them. Mark is also the lead author of several GRDC resources on herbicide behaviour, including a factsheet and agronomist manual on the soil behaviour of pre-emergent herbicides, listed below.

Mark Yerbury

Mark Yerbury is the FMC’s Technical Services Manager for Australia and New Zealand with over a decade of experience in the agricultural sector. With a Bachelor of Rural Science (Hons I) and a Graduate Certificate in Science (Research Methods Major), Mark has excelled in herbicide research, development, and technical extension. He has had a pivotal role in the successful launch and stewardship of key products like Overwatch Herbicide, here in Australia. Mark’s will be covering off stewardship topics on factors that influence the performance of per-emergent herbicide performance.

Presentation Links

GRDC Herbicide Behaviour Page

GRDC Pre-emergent herbicides fact sheet

GRDC Soil behaviour of pre-emergent herbicides in Australian farming systems: a reference manual for agronomic advisers

Further Information

Learning Hub Course — Pre-emergent Herbicides 101

We’ll run through the basics of pre-emergent herbicides and then look at how they can be used in both winter and summer cropping systems. If you’re an agronomist and you’d like to deepen your understanding of how pre-emergent herbicides work, this is the course for you!