Nine bermudagrass varieties and strains were evaluated to determine their effects on consumption, utilization, preference, and host suitability of the fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith). The established varieties, 'Coastal,' 'Tifton 44,' 'Tifton 78,' and 'Tifton 292,' a newly released variety, 'Grazer,' and the experimental strains, #1 R12P5, OSU 71 × 6-7, OSU 74 × 11-2, and OSU 74 × 12-1 were included in this study. 'Tifton 292' was the grass most preferred by neonate larvae, and OSU 74 × 11-2 was the least preferred. A host suitability index indicated that 'Tifton 78' was the most suitable host for FAW development, and OSU 71 × 6-7 was the least suitable. The nine bermudagrass varieties and strains were categorized as susceptible ('Tifton 78,' OSU 74 × 12-1,and 'Grazer'), intermediately resistant (#1 R12P5, 'Coastal,' 'Tifton 292,' OSU7 4 × 11-2, and 'Tifton 44'), and resistant (OSU 71 × 6-7). The mechanism of resistance to FAW feeding is believed to be antibiosis rather than nonpreference.
Document Type: Research Article
Publication date: April 1, 1988
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Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.