Abstract
The application of the atrazine mixtures [atrazine (2-chloro-4-ethyl-amino-6-isoprop-ylamino-s-triazine) plus orthobencarb (S- (2-chlorobenzyl) N, N-diethylthiocarbamate) and atrazine plus MCPP (2- (2-methyl-4-chlo roph-enoxy) propionic acid) ] was tested on the turf.
The mixtures were highly effective on broad leaf weeds, such as leguminous weeds, which had been difficult to control by common soilapplied herbicides. The mixtures were effective by either soil application, or foliage application. Foliage application of them were excessively effective for most of weeds, including perenial weeds such as lawn pennywort (Hydroctyle sibthorpioides Lam.), creeping woodsorrel
(Oxalis corniculata L.), paspalum (Pasupalum thunbergii Kunth) and aging annual bluegrass (Poa annua L.), Japanese clover (Kummerouia striata Schindler) . They were more effective on perennial weeds by repeated applications, or by cutting their leaves after application.
The injury to turf grsses was not observed at recommended dosage in field and pot tests.
Therefore, the mixtures were highly effective for many weeds, and showed no injury to turf grasses as Japanese lawn grass (Zoycia japonica Steud.) and manila grass (Zoycia matrella Merr.) .
