Abstract
Abstract Burley and dark tobacco were transplanted on 12 and 21 May, respectively, at the Highland Rim Experiment Station, Springfield, Tenn. Plots were 4 rows × 450 ft for the dark tobacco and 4 rows × 240 ft for the burley tobacco. Plots were replicated 3 times in a randomized complete block design with 42-inch spacing between rows. Plants were spaced 18 ,.nd 36 inches within rows for burley and dark tobacco, respectively. Orthene at different rates was applied in the transplant water at the time of setting. Soil type for the dark tobacco was Montview silt loam, 2-5% slope, pH 6.1. Soil type for the burley tobacco was Dixon silt loam, 2-5% slope, pH 6.3. Total rainfall for the growing season was 10.92 inches, and 2.45 inches of that amount fell during a 6-wk period after transplanting. All plots were sprayed with < orthene at 0.75 lb (AI)/acre on 17 Jun for hornworms. Flea beetle damage was reported as average number of feeding holes/10 leaves; counts were made on the 5th leaf (of width greater than 2 inches) from the top of the plant. Hornworm larvae were counted on 100 plants/plot on 16 Jun. Burley and dark tobacco were harvested on 12 and 24 Aug, respectively.
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