Grains Research Foundation Blog

Grains Research Foundation Blog

Controlling Grass Weeds in Sorghum

Meg Kummerow - Thursday, February 19, 2015

I took a drive around our district yesterday to see what was happening arround the farms. A few farmers were harvesting in an attempt to beat the coming cyclone threat. Some had finished harvesting (damn you irrigated sunflower grower, I needed a photo of you in that crop!).

Most farmers in our area are aware of the importance of controlling weeds on farm. Most would have some form of integrated weed management plan in place. Not only do weeds make your farm look messy (maybe I just come from a family who are rather particular!), they also can have a serious impact on yield, harvest and grain quality.

One of the farms I drove past had a serious grass issue in their sorghum (that's it in the photo!). Not only will it affect their crop yield, but in a flood event these weed seeds will spread to both neighbouring farms and farms further down-stream.

I thought it would be a good opportunity to share some resources around that may assist you to make weed management decisions. As always, consult your agronomist for a more considered view of your issues and current and future crop requirements for your area and situation.

First up, the GRDC's Sorghum Grownotes have a section on weed control (as do all commodity GrowNotes). Whilst not a in depth view of options available, they can point you in the direction of other resources that may be of assistance.

One of these other resources is the NSW DPI 'Weed Control in Summer Crops 2012-2013'. This is a fantastic resource which contains a lot of information from crop rotations to pre & post-plant grass and broadleaf weed control. It also contains information on legal responsibilities in pesticide application, although from a NSW perspective.

Another resource available on the GRDC website is the Integrated Weed Management Hub.  Containing the Integrated Weed Management Manual, this is a broader look at managing weed & minimising resistance over the long term.

DAFF QLD also have a broad Weed Management section available on their website.  Whilst no specific details on managing grass weeds in sorghum, it is still a handy resource.

What are your go to resources for finding out about managing in crop or pre & post-crop weeds?  I'll update this document as you share them with me.

I'd also like to know what information you'd like me to dig out next? Is there a specific topic that you'd like me to find out resources or information on?

Until next time, 


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