Lack of Interaction Between Glyphosate and Fungicide Treatments on Rhizoctonia Crown and Root Rot in Glyphosate-Resistant Sugarbeet

How glyphosate affects plant disease development: it is more than enhanced susceptibility

“…56,57 In addition, there was no effect of glyphosate on fungicide management of this disease. 56 However, it was noted that different glyphosate resistant sugarbeet varieties do differ in resistance to R. solani. Thus, knowing the resistance or susceptibility to Rhizoctonia is an important consideration when selecting a variety for planting.…”

“…However, this effect was not observed in beets that were inoculated with a more virulent F. oxysporum isolate or with R. solani AG‐4. Subsequent research found no effect of glyphosate resistance or glyphosate resistance on resistance to R. solani . In addition, there was no effect of glyphosate on fungicide management of this disease .…”

“…Subsequent research found no effect of glyphosate resistance or glyphosate resistance on resistance to R. solani . In addition, there was no effect of glyphosate on fungicide management of this disease . However, it was noted that different glyphosate resistant sugarbeet varieties do differ in resistance to R. solani .…”

Glyphosate and fungicide effects on Cercospora leaf spot in four glyphosate-resistant sugar beet (Beta vulgaris) varieties

“…c CLS-program ¼ three fungicide applications; pyraclostrobin followed by tetraconazole followed by trifloxystrobin (rates in text). sugar beet (Barnett et al, 2011(Barnett et al, , 2012. The CLS fungicide program in our experiments on CLS systematically improved yield and sugar quality parameters in both years and, considering the high level of disease pressure and the efficacy of the fungicides used, this was not unexpected.…”

“…Reductions in rust and powdery mildew on glyphosateresistant alfalfa have been reported with glyphosate applications in greenhouse experiments (Foster-Hartnett and Samac, 2008). For soil-borne diseases, some studies have shown no effect on disease severity (Lee et al, 2000;Nelson et al, 2002;Njiti et al, 2003;Barnett et al, 2011Barnett et al, , 2012 while other studies have reported potential for increased disease severity (Sanogo et al, 2000;Nelson et al, 2002;Larson et al, 2006).…”