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Southern armyworm and tomato pinworm are the principal lepidopteran pests of fresh market tomatoes in southwest Florida. This trial compared present standards with a new chemical class that could provide growers an additional option for controlling these pests. Greenhouse-raised tomato seedlings were planted at the Southwest Florida Research and Extension Center, Immokalee, FL on 6 Mar 2006 at 36-inch spacing on 3 raised beds 240 ft long on 6-ft centers, each covered with black polyethylene film. A seedling of Amaranthus viridis was placed between each tomato plant to serve as an attractant for SAW. Admire Pro (imidacloprid, 42.8%) was applied at 7 oz/acre as a drench in 50 ml of water at transplant to control whiteflies. Maintenance fungicides Kocide® @ 3 lb/acre, Manzate® 75DF @ 1.5 lb/acre, Tanos® 8 oz/acre and Gavel® @ 1.5 lb/acre were applied as needed. Plants were irrigated and fertilized using Netafim® drip tape with 12-inch spacing between emitters and sprayed. The treated beds were divided into plots 30 ft long to which 7 treatments (Table 1) were assigned in a completely randomized block design with 4 replications. Treatments were applied using a high clearance sprayer made from a raised John Deere® model 990 tractor fitted with a HyPro model 9910-D50 diaphragm pump (maximum flow 14 gpm) connected to two vertical booms operating at 200 psi. Each boom was fitted with 3 or 4 ceramic yellow Albuz® ATR hollow cone nozzles to deliver 60 or 80 gpa respectively, depending on plant height. Number of TPW larvae and feeding damage on 4 plants per plot was monitored weekly 5 times starting 31 Mar. Damage was rated as 0 = no damage, 1 = 1% leaflets with damage, 2 = 2 to 5%, 3 = 6 to 15%, 4 = 16 to 30% and 5 > 30%.

CONTROL OF SOUTHERN ARMYWORM AND TOMATO PINWORM ON STAKED TOMATO, 2006