Abstract
ABSTRACT Rooted ‘Tifblue’ rabbiteye blueberry cuttings (Vaccinium ashei Reade) grown in sand or sand plus peatmoss media were treated with high and low recommended rates of five herbicides commonly used on blueberries. Terbacilat 1.4 or 2.8 kg a.i. ha-1 (1.3 or 2.5 lb/acre) killed 72% of the plants, while 1.8 or 3.6 kg a.i. ha ] (1.6 or 3.2 lb/acre) application of norflurazon caused a 53% mortality overall. Plants treated with oryzalin and simazine also showed reduced root volumes, root or top dry weight, or leaf chlorophyll concentrations in some treatments. Simazine at 1.8 kg a.i. ha (1.6 lb/acre) and napro-pramide at 3.6 kg a.i. ha (3.2 lb/acre) appeared to be good herbicide choices for young plants. Chemical names used: 2-(naphtoxy)-N, N-diethyl-propionarnide (napropamide); 2-chloro-4,6-bis(ethylaine>i-triaine (simazine); 3-te/T-butyl-5-cWoro-6-inethyluracil (terbacil); 4-chlon>5-(methyla-mino>2(3-trifluorornethyl)phenyl-3(2H) plyridazinone (norflurazon); 4-(dylamino>34-dinitrobenzene sulfonamide (ory...
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