(B5) NECTARINE: Prunus persica L., ‘Fantasia’ Peter W. Shearer Rutgers Agricultural Research and Extension Center 121 Northville Rd. Bridgeton, NJ 08302 Phone: (856) 455-3100 ext 4110 Fax: (856) 455-3133 E-mail: email@example.com Ann Rucker Flowers thrips (FT): Frankliniella tritici (Fitch) The experiment was conducted to compare different treatments to control early-season thrips at the Rutgers Agricultural Research and Extension Center in Bridgeton, NJ. Insecticide sprays were applied to 10-year-old ‘Fantasia’ nectarine trees using a Rears airblast sprayer (28 inch fan, 180 psi) delivering 100 gpa when pulled through the orchard at 2.6 mph. The experimental treatments were applied 5 May during the late petal fall stage to single tree plots replicated four times in a RCBD. Trees were spaced 20 x 20 ft. All trees received regular sprays for disease management. Fruit damage was evaluated on 30 May by examining 25 fruit/tree (100 fruit/treatment) for thrips feeding damage. Thrips pressure was high. Fruit damage data were transformed [arcsin(sqrt(X))] before analysis with GLM. Treatments means were separated using Tukey’s Honest Significant Difference, at P= 0.05 level. Only the Lannate and Spintor treatments had less thrips feeding damage on fruit relative to the untreated check. However, damage from those treatments was not different from either the QRD 400 or Delegate treatments. These later 2 treatments were also not statistically different from the control. Table 1. Treatment Rate/acre % Fruit with damage Lannate 92SP 1.0 lb 33.0b Spintor 2SC 6.0 oz 34.0b Delegate 25WG 6.0 oz 40.0ab QRD 400 2.0 qt 49.0ab Untreated check 66.0a Column means followed by the same letter are not significantly different (Tukey’s Honest Significant Difference, P = 0.05) (ANOVA).
Arthropod Management Tests – Oxford University Press
Published: Jan 1, 2008