(E68) POTATO: Solanum tuberosum L., ‘Katahdin’ Gary H. Sewell Aroostook Farm 59 Houlton Rd. Presque Isle, ME 04769 Phone: (207) 768-5963 Fax: (207) 764-6740 E-mail: email@example.com Andrei Alyokhin 5722 Deering Hall, Rm 215 University of Maine Orono, ME 04469 Phone: (207) 581-2977 Fax: (207) 581-2969 E-mail: firstname.lastname@example.org Wireworms; Agriotes mancus (Say), Hypnoidus abbreviatus (Say), Hemicrepidius decoloratus (Say) The RCB design experiment was replicated four times and conducted in Presque Isle, ME on land that had been in sod for more than seven years. The 12-ft rows were planted 24 May with ‘Katahdin’ seed spaced 12 inches. Two untreated rows were left between treatment rows and a 10-ft fallow area was left between blocks. Seed treatments were made by adding the proportional amount of insecticide to the total weighed seed. Furrow applications were made by spraying the open furrow at 7.6 gpa and 12 psi with a CO backpack sprayer. Subsequent treatment applications were made by the same sprayer. Fertilizer and hilling practices were normal for the area. Early and late blight were controlled by seven foliar applications of a Mancozeb fungicide. The soil was classified as Caribou Loam, pH 5.2. Total monthly rainfall for Jun, Jul, and Aug was respectively 3.3, 4.5 and 3.6 inches and the average temperature was 58, 62 and 66 ºF. Data were subjected to ANOVA and means were compared with Fisher’s LSD Test (P ≤ 0.05). Wireworm damage was sporadic among replications leading to large standard deviations. Although Regent had less percent damaged weight and numbers than other treatments, it was not a significant difference. Table 1. Treatment/ Rate amt Application Total % damaged Total tuber % damaged formulation product/cwt date weight (lbs) weight (lbs) number tuber Tops-MZ (Control) 12 oz 24 May 26.5a 19.1a 66.3a 15.50a Genesis 2SL + Tops-MZ 0.8 fl oz + 12 oz 24 May 28.0a 12.3a 69.0a 10.16a L0263-A1 F + Tops-MZ 0.32 fl oz + 12 oz 24 May 26.9a 22.8a 61.0a 18.70a L0263-A1 F + Tops-MZ 0.48 fl oz + 12 oz 24 May 27.9a 12.3a 74.5a 10.09a L1116-A1 F + Tops-MZ 0.27 fl oz + 12 oz 24 May 27.9a 18.6a 63.3a 12.95a Mocap 6EC + Tops-MZ 4.4 fl oz/1 kg + 12 oz 24 May 27.0a 11.5a 69.5a 10.25a Regent 4SC 3.2 fl oz/acre 24 May 27.5a 8.3a 67.5a 9.17a Vydate C-LV 3.77L 2 pt/acre 24 May, 28 Jul 25.6a 29.0a 62.0a 25.61a Asana XL 0.66EC 9.6 fl oz/acre 28 May 29.3a 20.0a 74.3a 16.44a Vydate C-LV 3.77L + Asana XL 0.66EC 2 pt/acre + 9.6 oz/acre 24 May 27.3a 27.2a 70.5a 24.31a Means in a column followed by the same letter are not significantly different (P > 0.05, Fisher’s LSD).
Arthropod Management Tests – Oxford University Press
Published: Jan 1, 2005