Susceptibility of 'Tifton 68' and 'Coastal' bermudagrass to the Mexican rice borer.
1987
Browning H.W. | Hussey M.A.
Field observations in 1984 indicated a difference between 'Tifton 68' (Cynodon nlemfuensis Vanderyst) and 'Coastal' [C. dactylon (L.) Pers.] bermudagrass in susceptibility to the Mexican rice borer, Eoreuma loftini (Dyar). Results from random samples verified the differential susceptibility of these two cultivars. In replicated 1-m2 plots, an average of 38% of Tifton 68 stolons were damaged by E. loftini and 15% contained live borers, compared with 0.8% borer damage in Coastal and the absence of live borers in that cultivar. The recovery of pupae and pupal exuviae demonstrated the ability of E. loftini to successfully complete its life cycle on Tifton 68. The transportation of vegetative material of Tifton 68 and its role in the spread of this pest is discussed. Other forage grasses susceptible to damage by E. loftini are listed.
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