Effect of four herbicides on establishment and forage yield of Guinea grass in Puerto Rico

Lii C. Liu, Greicha Sievens
1969 The Journal of Agriculture of the University of Puerto Rico  
A field experiment was conducted at the Gurabo substation to evaluate atrazine, simazine, diuron and tebuthiuron for pre-emergence control of weeds in a Guinea grass pasture. Tebuthiuron at 3.36 kg a¡/ha was the most effective herbicide in controlling weeds, but was also very phytotoxic to the pasture even at a lower rate. The remaining herbicides provided satisfactory weed control and were not as phytotoxic to Guinea grass. There were no significant yield differences among herbicide-treated
more » ... erbicide-treated plots except for the plot with diuron. Diuron-treated plots at 3.36 kg ai/ha outyielded those with other herbicide treatments and the weeded check, but no significant statistical differences in yield were observed among plots with diuron at 3.36 kg ai/ha atrazine at 4.48 kg ai/ha and the handweeded check.
doi:10.46429/jaupr.v76i1.4116 fatcat:uoxsu44ldrd5xeyzde2beiovym