Fouché, C.

Leinfelder, M.

Mullen, R.

Rivara, C.

Villalpando, B.

Whiteley, S.

Undetermined

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Section V.Soil ArthropodsCONTROL OF GARDEN CENTIPEDES, Scutigerella immaculata,IN TOMATO FIELDS - 2002C. Fouche, R. Mullen, C. Rivara, M. Leinfelder, B. Villalpando, & S. WhiteleyUniversity of California Cooperative Extension, 420 Wilson Way,Stockton, California 95205-6243209/468-2085bfouche@ucdavis.edu, rjmullen(o)ucdavis.eduExperimental plots were established at Hal and Keith Robertson Farms, Tracy, California, in order toevaluate the effectiveness of five different materials against the garden centipede in a commercial tomatofield. The plot area was selected by evidence of garden centipede damage to the growers' originaltransplants. The treatments were randomized based on the severity of damage in the field, and all originalplants were removed. Treatments 1, 2, and 3 were dissolved in water, with 10 oz. (295.7 ml) of solutionapplied to the soil immediately after transplanting. The solution was applied to the base of the plant andallowed to penetrate the soil profile to a level just below the plug. Treatment 4 was applied in granularform before the transplanting, and then roto-tilled into the soil using a Sears 5-hp garden type tiller.Treatment 5 was mixed in 30 gallons of water per acre, applied in a 6-inch band over the bed andincorporated with the roto-tiller prior to placing the new transplants in the ground. All materials wereapplied on June 5, 2002. Tomato plants were the variety Halley 3155, spaced 15 inches apart in a 60-inch-wide bed. Plot size totaled .003 acre, one bed wide by 20 plants in row bed. The field was furrowirrigated.Materials in Trial:Products Active ingredienl Timing Formulation G ai/lOOm Lb ai/ac1. Admire Imidacloprid At Transplanting 2F 0.75 0.092. Calypso Thiocloprid At Transplanting 480SC 1.04 0.123.V10112 Dinotefuran At Transplanting 20SG 2.80 0.334. Force Tefluthrin At Transplanting 3G 1.29 0.085. AG 600 WBC Diazinon At Transplanting AG600 34.40 4.006. Untreated At TransplantingStand counts were taken by visually rating the number of plants alive out of the total of 20 in the plot.Stand vigor was evaluated based on the growth and vigor of the plants outside of the affected area. Plotswere harvested on July 19th. During the course of the trial, garden centipedes were observed feeding onthe roots of the tomato plants in the untreated control.35Tomato Symphylid Trial - 2002 Tracy, CATreatments and Ratesgai/ 100 metersNumber of Surviving Plants(20 plant sample)* Vigor of PlantsMean Wtgms/plantJune 7 July 7 July 7 July 191.Admire 2F 0.75 10.75 ab 11 ab 2.25 c 211.95 ab2.Calypso 480SC 1.04 18.5 b 16.5 b 2.5 be 278.4 ab3.V10112 20SG 2.80 12.5 ab 13.8 ab 1.8c 155.225 a4.Force 3G 0.08 18.5 b 15 ab 4.5 a 598.05 c5. Diazinon AG600 34.40 17.0 ab 16.5 b 3.8 ab 368.45 b6.Untreated Control 9.25 a 10.25 a 1.25 c 196.15 aTwo different people evaluated the plants mortality at different times, thus the mortality rates are basedon each individual's criteria.*Means followed by the same letter in a column are not significantly different at 5% level (Fisher's LSD)The Calypso treatment provided the best protection of transplants for the first few days but the effect didnot continue as the trial progressed. Force 3G provided the best control of garden centipedes 44 daysafter the treatments were applied.Future work should evaluate the rates of Force required to control damage by garden centipedes andpossible combination treatments of Calypso and Force should be investigated in order to obtain the bestmethod for early season control of damage in transplanted fields.36J 5008 ioo4.53.5CUD> 2.51.50.5Tomato Symphylid Trial-Tracy, Ca 200244 Days After Treatment-20 Plants/PlotTreatment Rates in Grams Active/100 MetersAdmire 0.75 Calypso 1.04 VI0112 2.80 Force 3G 1.29 Diazinon 34.4 UntreatedTomato Symphylid Trial-Tracy, Ca 2002Plant Vigor Rating l=Low 5 =HighAdmire 0.75 Calypso 1.04 VI0112 2.80 Force 3G 1.29 Diazinon 34.4 Untreated37

Control of garden centipedes, Scutigerella immaculata, in tomato fields - 2002

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Control of garden centipedes, Scutigerella immaculata, in tomato fields - 2002

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