Danitol Evaluated for Scale Control on Texas Citrus, 1991

Danitol was compared to Lorsban, Talstar, and Sevin for efficacy against CRS. Treatments were randomly assigned to 2 × 2 (= 4 tree) plots and replicated 3 times in a 5-yr-old grapefruit orchard on 15 × 24 ft spacing. Treatment applications were made on 5 Jun with an FMC 1229 FTM air blast sprayer with nozzling, pressure, and speed adjusted to apply 250 gal/acre. At pre- and post-spray intervals, fully developed new leaves were randomly collected (8 leaves/tree) and examined separately under a microscope at 15 X for live crawler and sessile stage CRS. Sessile CRS were recorded as live if fluid issued from the insect’s body when probed with a needle.