Evaluation of Herbicides for Use in Transplanting Leucaena leucocephala and Prosopis alba on Semi-Arid Lands Without Irrigation
The herbicides oxyfluorfen (Goal), oryzalin (Surflan), alachlor (Lasso), metolachlor (Dual) and napropamide (Devrinol) were examined at 2 rates for use in transplanting operations with Prosopis alba and Leucaena leucocephala K8. The herbicides were evaluated in a season in which only 150 mm of rainfall occurred during the first 120 days after transplanting. The greatest biomass production of Leucaena and Prosopis was obtained with oryzalin at 2.8 kg a.i./ha. Oryzalin increased the biomass production over nontreated controls by 4 to 5 fold for Prosopis and Leucaena. Oryzalin was second to napropamide in grass control and second to oxyfluorfen in forb control. Oxyfluorfen at 1.12 kg a.i./ha provided the best forb control (but the 4th best grass control) and the second greatest biomass production. In comparison to an untreated control oryzalin increased the survival of Leucaena and Prosopis from 70 to 89 and 80 to 94 percent respectively. Forest Sci. 30:747-755.
No Supplementary Data
No Article Media