Johnsongrass? There's an app for that!
JohnsonGrass-JG (Android) and JG-JohnsoGrass (Apple) are apps for your tablet or smartphone that provided useful information about the biology, identification and management of Johnsongrass [Sorghum halepense]. It also contains a “Record” feature that allows the user to help map the distribution of the weed and its spread over time and space.
An important, noxious weed
Johnsongrass is considered a top 10 noxious weed, not only in the United States, but worldwide. Once established in a field, it is a long-term problem requiring aggressive management and strategies to control. It's ability to establish itself by either rhizomes or seed make it very difficult to eradicate once it become established in a farmer's field. It is a perennial grass that is hard to control in perennial and annual crops, especially in other cereal crops.
We've got your back with existing resources
Don't forget, UC ANR has additional information about Johnsongrass. Click Biology and Management of Johnsongrass - ANR Publication 8569 and Distinguishing Johnsongrass and Young Summer Grass Weeds - ANR Publication 8570 to find detailed, recent information on Johnsongrass. General information can also be found at the UC IPM website on the Weed Gallery: Johnsongrass page. For crop specific information on how to control Johnsongrass, you can visit the UC IPM Agricultural Pests webpage, select your crop of interest by clicking its link under the “Crops” heading, then navigating to the “Weeds” section of your crop page, and finally clicking on the link titled “Special Weed Problems.” Remember you can also visit or call Cooperative Extension offices in your counties for more local guidance.
Need more apps?
We recently highlighted the use of mobile device apps used for the purpose of identifying weeds. For growers and PCA's on the run, these tools used properly can give you some extra confidence or a starting point when developing a plan to clean the weeds in your fields. Click What Smartphone Apps are Available for Weed ID? and Weed ID Mobile Apps: Hands-on Training for more information.
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