Individual Plant Treatments for Controlling Redberry Juniper Seedlings

Abstract

Cutting at the soil surface or hand grubbing to a depth of 5 to 15 cm completely controlled redberry juniper seedlings that averaged 34 cm in height in the southwestern Edwards Plateau of Texas. Foliar sprays (0.5% a.i.) of bromacil, hexazinone, 2,4,5T + picloram (1:1), and picloram in water carriers as well as picloram in a 2:98 (v:v) diesel fuel/water emulsion applied in fall or spring also completely controlled juniper seedlings. Foliar sprays of dicamba (0.5% a.i.) completely controlled redberry juniper seedlings in a wet spring and 76% of the seedlings in a dry fall. Pelleted or granular formulations of dicamba, tebuthiuron, and picloram at 2.2 to 4.5 kg (a.i.)/ha as individual-plant treatments did not satisfactorily control juniper seedlings in a dry fall or a wet spring. Cutting or hand grubbing were the least cost alternatives ($23.14/ha), based on 1979 prices for controlling stands averaging over 2,000/ha. Dicamba as a 0.5% foliar spray was the least cost herbicide spray evaluated ($28.24/ha), followed closely by bromacil ($29.28/ha), hexazinone ($32.10/ha), and 2,4,5-T + picloram ($32.44/ha).