The effect of simulated rain on the activity and uptake of imazapyr on Mikania micrantha H.B.K.
1992
Price, C.E. | Ipor, I. B.
The effect of simulated rain on the activity and uptake of imazapyr was studied on Mikania micrantha H.B.K. The activity of imazapyr was significantly increased both at high concentration of imazapyr and low volumes of staying. Imazapyr required at least six hours between herbicide application and onset of simulated rain to obtain wore than 50% control. Increasing the volume and intensity of simulated rain adversely affected the activity of imazapyr. Lowest percentage of control was obtained at 10 mm and 50 mm/h for volume and intensity of simulated rain respectively. Greater uptake of IfC-imazapyr was recorded in plants pretreated with simulated rain than those without exposure to simulated rain. Tzventy-four hours after treatment, uptake was 78.7% and 70.5% for those exposed to simulated rain and without simulated rain respectively.
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