Ferguson, Holly J.

Walsh, Douglas B.

Waters, Timothy D.

Wight, Ronald P.

Undetermined

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                                                                                                       47 Section V Soil Arthropods  SEED TREATMENTS FOR SEEDCORN MAGGOT CONTROL ON CARROT  T. D. Waters, R. P. Wight, H. J, Ferguson,  and D. B. Walsh Washington State University IAREC 24106 N. Bunn Rd.,Prosser, WA 99350 twaters@wsu.edu, rwight@wsu.edu, hferguson@wsu.edu, dwalsh@wsu.edu   Seedcorn maggot (SCM) Delia platura can significantly reduce carrot field stand establishment. Seed treatments were tested with several insecticides for control of SCM. A field trial was established on 11 May 2005 near Alderdale, Washington State USA. Seeds were planted by the grower in a complete random block design using a commercial vacuum planter. The number of carrot seedlings in three 1 meter segments per plot were counted on 31 May 2005 to evaluate efficacy. Results provided no statistically significant differences comparing the UTC to the different seed treatments.   Treatment Rate (oz/A) Mean Seedlings ± SE Untreated NA 69.25 ± 5.12 Apron XL 3 LS [-;US] Maxim 4 FS [-UN] 7.5 2.5 68.75 ± 5.97 Apron XL 3 LS [-;US] Maxim 4 FS [-UN] NOA421016 [-;UN] 7.5 2.5 0.075 67.50 ± 5.92 Apron XL 3 LS [-;US] Maxim 4 FS [-UN] NOA421016 [-;UN] 7.5 2.5 0.1 82.75 ± 4.17 Apron XL 3 LS [-;US] Maxim 4 FS [-UN] Cruiser 5 FS [-;US] NOA421016 [-;UN] 7.5 2.5 0.038 0.075 73.00 ± 4.49 Apron XL 3 LS [-;US] Maxim 4 FS [-UN] Cruiser 5 FS [-;US] NOA421016 [-;UN] 7.5 2.5 0.038 0.1 74.75 ± 6.07 Apron XL 3 LS [-;US] Maxim 4 FS [-UN] Cruiser 5 FS [-;US] Tigard 75 W P [-;UN] 7.5 2.5 0.038 0.0609 74.00 ± 3.69 Apron XL 3 LS [-;US] Maxim 4 FS [-UN] Cruiser 5 FS [-;US] 7.5 2.5 0.038 60.25 ± 5.82 Apron XL 3 LS [-;US] Maxim 4 FS [-UN] Local Standard [-;UN] 7.5 2.5 NA 80.75 ± 7.01 Means followed by * are significantly different from the untreated check (pairwise t-test, P< 0.05) 

Seed Treatments for Seedcorn Maggot Control on Carrot

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Seed Treatments for Seedcorn Maggot Control on Carrot

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