| Title: | Phytotoxicity of GF-120 NF Naturalyte fruit fly bait carrier on sweet cherry (Prunus avium L.) foliage |
| Author(s): | DeLury NC; Thistlewood H; Routledge R; |
| Address: | "Agriculture and Agri-Food Canada, Pacific Agri-Food Research Centre, Summerland, BC, Canada" |
| ISSN/ISBN: | 1526-498X (Print) 1526-498X (Linking) |
| Abstract: | "BACKGROUND: Six sweet cherry (Prunus avium L.) cultivars were tested with GF-120 with spinosad (0.2 g L(-1) spinosad bait) or without it (blank bait) to understand leaf phytotoxicity observed in the field. RESULTS: Spinosad bait and blank bait did not differ significantly with respect to damage observed. Leaf damage was found almost exclusively at the abaxial (lower) surfaces with the doses (0, 17, 20, 25 or 40%) and cultivars tested. The effects of the blank bait on abaxial surfaces increased from 24 to 168 h, and with dose, in terms of the proportion of droplets (0.00, 0.42, 0.52, 0.75 or 0.94) and area (0.0, 18.7, 23.5, 40.5 or 91.6 mm) burned. In addition, chlorophyll was reduced with increasing dose on abaxial surfaces (SPAD = 44.6, 36.1, 34.1, 31.0, 21.5), but not on adaxial (upper) surfaces (SPAD = 44.6, 44.2, 44.0, 44.8, 44.4). The chlorophyll level in undamaged leaves (adaxial surfaces) differed by cultivar. Cherry leaves were less damaged by a 20% bait application in June (0.26) than in July (0.46) and August (0.50). Incidental insect leaf feeding at bait locations occurred at a low rate and was highest on abaxial bait surfaces. CONCLUSIONS: Applying GF-120 to the adaxial leaf surface, or at doses of |
| Keywords: | "Animals Dose-Response Relationship, Drug Drug Combinations Insect Control/*methods Insecticides/*adverse effects Macrolides/*adverse effects Pheromones Plant Leaves Prunus/classification/*drug effects/parasitology Seasons Tephritidae/*drug effects/physiol;" |
| Notes: | "MedlineDeLury, Naomi C Thistlewood, Howard Routledge, Richard eng Research Support, Non-U.S. Gov't England 2008/09/23 Pest Manag Sci. 2009 Jan; 65(1):52-9. doi: 10.1002/ps.1644" |
