Now Available at OSU Seed Laboratory

 Glyphosate Laboratory and Greenhouse Bioassays for Annual Ryegrass

1. Glyphosate Laboratory Bioassay for Annual Ryegrass Detect and quantify the percentage of glyphosate tolerant/resistant seeds in ARG samples in 2 weeks.

Example of normal seedlings (top) vs seedlings with symptoms of Glyphosate exposure (bottom)

Figure 1.  Symptoms of herbicide toxicity of ARG seedlings caused by Roundup, 14 days after of planting. 


2. Glyphosate Greenhouse Bioassay for Annual Ryegrass Detect and quantify the percentage of glyphosate tolerant or resistant seeds in ARG samples in 5 weeks.

Two different images comparing the results of Glyphosate-susceptible seedlings with control seedlings

Figure 2. Symptoms of herbicide toxicity of ARG plants 14 days after of spraying of 21- day seedlings with Roundup.