Brunmeier, D. A.

Fouché, C. F.

Mullen, R.

Rivara, C.

Undetermined

ScholarsArchive@OSU

Section VSoil ArthropodsLACK OF CONTROL OF GARDEN CENTIPEDES WITH INSECTICIDESC.F. Fouche, R. Mullen, D. Brunmeier, C. RivaraUniversity ofCalifornia-CooperativeExtensionCalifornia Tomato Research InstituteStockton, Ca 95205 209-468-2085bfouche@ucdavis.eduCalifornia growers in the SanJoaquin Delta region oftenfece problems withgardencentipedesin crops suchas asparagus, beans, sugar beets, potatoes and corn. Typically infestations arelocalisedand occur in the soilshigh in organicmatter andclay soils that havecracksandcrevices that allow for movement of the symphylans. Dyfonate has been the materialofchoicebut is no longeravailable. Mocap is still effective in beans, corn and potatoesbut is notregistered in tomatoes. Many growers have applied diazinon witherratic results. This trialwasinitiated in order to evaluate control with Platinum and Admire in transplanted processingtomatoes.Products Active ingredient Timing Formulation Gai/lOOm Lb ai/ac1. Platinum Neonicotiniod Transplanting 2SC 0.75 0.092. Platinum Neomcotiniod Transplanting 2SC 1.04 0.123. Admire Imadicloprid Transplanting 2SC 2.80 0.334. AG 600 WBC Diazinon Transplanting AG600 34.40 4.008. Untreated Water TransplantingEach material was dissolved in water with 250ml of solution applied to the soil immediatelyafter transplanting. The solutionwas applied to the base of the plant and allowed to penetratethe soil profile to a leveljust below the plug. Allmaterialswere applied on June 3, 1999.Stand counts were taken by visually rating the number of plants alive out of the total of 20 inthe plots. Standvigor was evaluatedbased on the growth and vigor ofthe plants outside of theaffected area. Counts of symphylids per plants was highly variable and only used in theprecount evaluation. The Diazinon AG600 was the only material to provide protection fromgarden centipedes in this trial. Diazinon provided protection for the 48 days the plants wereobserved.69Tomato Symphylid Trial-1999Tracy, CaTrtJune 3-existing plant populationpresampieStand Count Stand Vigor # Symphylidper plot# Symphylidper plantPlatinum 2SC 0.75 g ai 11.0 b 3.9 be 11.5 ab 2.6 abPlatinum 2SC1.04 g ai 9.0 ab 3.1 abc 14.0 ab 2.8 abAdmire 2FS 2.8 g ai 5.8 a 2.1a 19.5 b 4.1 bDiazinon AG600 34 g ai 11.5 b 4.8 c 4.8 a 1.1 aUntreated Control 8.4 ab 2.4 ab 11.3 ab 2.5 abMeans within a column followed by the same letter(s) are not significantly different (DMRT,P=0.05)Stand Count is out of twenty plants Stand vigor is visual rating, 1=!owvigor, 10=high vigorYield=mean fresh weight in grams of whole plantsTomato Symphylid Trial-1999Tracy, CaTrt.June 1714 days after trtJulyl28 days after trtJuly 2148 days after trtStandCountStandVigorStandCountStandVigorStandCountGramsperplantPlatinum 2SC 0.75 g ai 20 a 4.8 a 14 ab 4.3 a 14 ab 153 aPlatinum 2SC1.04 g ai 20 a 4.5 a 13a 3.8 a 13a 129 aAdmire 2FS 2.8 g ai 20 a 5.3 ab 16 ab 5.6 ab 16 ab 270 aDiazinon AG600 34 g ai 20 a 7.8 b 19 b 9b 19 b 579 bUntreated Control 19a 4.7 a 15 ab 4.3 a 15 ab 142 aMeans withina column followed by the same letter(s) are not significantlydifferent(DMRT,P=0.05)Stand Count is out of twenty plants Stand vigor is visual rating, l=low vigor,10=high vigor•~;:3(5eld=mean fresh weight in grams of whole plants•:fi*?ZZ~70Tomato Symphylan Trial - Tracy, CA-1999Tomato Symphylan Trial - Tracy, CA-199948 Days After Treatment - 20 Plants/PlotTreatments in gai/100mPlatinum Platinum.75 1.04Admire2.8071Diazinon Untreated34.4 H20

Lack of control of garden centipedes with insecticides

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Lack of control of garden centipedes with insecticides

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