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Submitted to: Meeting Abstract
Publication Type: Abstract Only Publication Acceptance Date: 1/29/2015 Publication Date: 2/5/2015 Citation: Dowd, P.F. 2015. Sorghum studies by the USDA "Ag Lab" in 2014. Proceedings of the Central Illinois Irrigated Growers Association, Irrigation Clinic. Meeting Abstract. Interpretive Summary: Technical Abstract: National Institute of Food and Agriculture grant funding permitted a continuation of experiments to evaluate insect damage to low lignin lines of sorghum, which are also being examined for bioenergy production. Results for 2014 were similar to those found in 2012 and 2013 field tests at the Havana research site location, where generally insect damage or disease were not worse than for the near isogenic normal lignin line, and sometimes showed lower damage than the normal lignin line. The incidence and amount of caterpillar leaf damage was consistently less for the bmr6 compared to the normal lignin line, which was also sometimes true for the bmr12 line. Grasshopper and aphid damage was also sometimes lower for the bmr lines compared to normal lignin line, and there were no significant differences in disease incidence or severity. European corn borer stalk damage incidence and tunneling was lower in the bmr6 compared to normal lignin and bmr12 stalks. Pith from stalks of the bmr lines was more toxic to corn earworms and fall armyworms than that from normal lignin lines. These results are similar to past results for assays where leaves or pith have been removed for lab or small plot grown plants and fed to corn earworm and fall armyworm larvae, as the bmr6 leaves have had less damage and pith has been more toxic to both species. |
