Abstract
Abstract Nineteen container grown landscape species were evaluated for tolerance to postemergence (topical) applications of Basagran (bentazon) at 1.1 and 2.2 kg ai/ha (1 and 2 lb ai/A). Visual injury ratings were made at 14 and 37 days after treatment and growth measurements at the end of the study. Both rates of Basagran were phytotoxic to Amagasa Azalea (Rhododendron satsuki ‘Amagasa’), Crimson Pygmy Barberry (Berberis thunbergii D.C. ‘Crimson Pygmy’), Coral Beauty Cotoneaster (Cotoneaster dammeri C.K. ‘Coral Beauty’), Heavenly Bamboo (Nandina domestica Thunb.) and Holmstrup Arbovitae (Thuja occidentalis L. ‘Homstrup’) 14 days after treatment. Azalea and Heavenly Bamboo treated with the low rate recovered from the earlier injury by 37 days after treatment. Sasanqua Camellia (Camellia sasanqua Thunb. ‘Cleopatra’), Rotunda Holly (Ilex cornuta Lindl. and Paxt. ‘Rotunda’) and Schellings Dwarf Yaupon Holly (Ilex vomitoria Ait. ‘Schellings’), Hetzi Blue Chinese Juniper (Juniperus chinensis L. ‘Hetzi I. Glauca’), and Wax-Leaf Privet (Ligustrum japonicum Thunb.) exhibited no visual damage or growth reduction. The remaining species were injured to differing degrees.
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