Pre-early post-emergent weed control for sugar cane in Guyana.
In field trials on 2 plantations in Guyana (the LBI and Enmore Estates) in 1989-90, new formulations and herbicides were compared with standard treatments of Gesapax Combi [ametryn + atrazine] and Karmex [diuron] for the control of weeds (mainly Cyperus rotundus, Momordica charantia, Fimbristylis miliacea and Heteranthera spp.) in sugarcane in the 1st 12 weeks after planting. Combi Plus 500 FW and Combi Plus 80 proved to be as effective as the standard treatment. Candex [asulam + atrazine] was used in 1 trial, but was not considered for further evaluation. Of the new herbicides tested, Caragard [terbumeton + terbuthylazine] was ineffective, whereas Command [clomazone] was promising, and hence further evaluation of this herbicide was recommended.