11.22.2015 | Category, Study

 Effects of Commonly-Used Herbicides on Establishing and Mature Kurapia (Phyla nodiflora L.)  study was jointly done by Cole Thompson1 and Jim Baird2

 1Cal Poly State University – San Luis Obispo, San Luis Obispo, CA, 2University of California – Riverside, Riverside, CA 


American Society of Agronomy
Crop Science Society of America
Soil Society of America
With the Entomological Society of American


 The study was jointly done by SCal Poly State University – San Luis Obispo, San Luis Obispo, CA and University of California – Riverside, Riverside, CA 

Kurapia (Phyla nodiflora L.) is a broadleaf groundcover selected and developed in Japan that has recently been recognized for its low water use and salinity tolerance characteristics.  Kurapia use is now increasing in California landscapes, but little is known about its tolerance to pre- and postemergence herbicides during or after establishment.  Our objective was to evaluate Kurapia tolerance to 15 commercially available herbicides at various stages of establishment.  Kurapia plugs were installed in March 2015 in two California locations (Riverside and San Luis Obispo).  All herbicides were applied at labeled rates at 1, 6, or 12 weeks after planting Kurapia plugs in each location.  Kurapia injury was visually estimated at 1, 2, 4, and 6 weeks after treatment for each herbicide timing, and percent Kurapia ground cover was visually estimated every two weeks from March through July.  Metolachlor, prodiamine, and fluazifop were generally the least injurious at each application timing in San Luis Obispo and Riverside, whereas triclopyr, indaziflam, halosulfuron, 2,4-D + MCPP + dicamba + carfentrazone-ethyl, and thiencarbazone + foramsulfuron + halosulfuron were most injurious.  Kurapia response to isoxaben, sulfosulfuron, mesotrione, quinclorac, clopyralid, MCPP, and thiencarbazone + iodosulfuron + dicamba was variable among application timings and between sites.
See more from this Division: C05 Turfgrass Science
See more from this Session: Turfgrass Science: II