Assessment of grain sorghum hybrids for resistance to insect and bird damage at three planting dates

Tuesday, March 4, 2014: 9:42 AM
Greenbrier (Embassy Suites Greenville Golf & Conference Center)
Xinzhi Ni , Crop Genetics and Breeding Research Unit, USDA, Agricultural Research Service, Tifton, GA
Michael Toews , Department of Entomology, The University of Georgia, Tifton, GA
G. David Buntin , Entomology, University of Georgia, Griffin, GA
Twenty-five grain sorghum hybrids were evaluated for resistance to insect and bird damage with three planting dates in 2013, at the Belflower Research Farm near Tifton, GA. On each planting date, the 25 hybrids were planted utilizing randomized complete block design with 4 replications. Sorghum midge and bird damage were rated 14 weeks after planting. The sorghum midge damage was rated according to the visual estimates of grain loss. Of the three planting dates in 2013, experimental plots from the first planting showed more bird damage than either of the two latter plantings, while the sorghum midge damage was higher in the later plantings.
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