Factors Affecting Poa annua L. Control
- 1 April 1967
- Vol. 15 (2) , 98-+
- https://doi.org/10.2307/4041172
Abstract
Complete control of annual bluegrass (Poa annua L.) at all levels of P and at both planting dates was obtained with [alpha], [alpha], [alpha],-trifluoro,2,6-dinitro-N,N-dipropyl-p-toliiidine (trifluralin) at 2 lb/A. For both planting dates, high levels of P reduced the effectiveness of both calcium arsenate (CaAs) and to a small degree dimethyl 2,3,5-6-tetrachloroterephthalate (DCPA). On a plant count basis, O-(2,4-dichlorophenyl)O-methyl isopropylphosphor-amidothioate (DMPA) was more effective than N-(2-mercaptoethyl) benzenesulfonamide S-(O,O,-diisopropyl phosphorodithioate) (bensulide) for the control of annual bluegrass. In the field, injury to bentgrasses (Agrostis palustris Huds.) from preemergence herbicides generally was specific to 1 or 2 varieties. Washington bentgrass was severely injured from a 12-lb/a application of l-(2-methylcyclohexyl)-3-phenyl-urea (siduron).This publication has 0 references indexed in Scilit: