A 75-acre prescribed burn one mile east of Islay Hill in southeast San Luis Obispo is planned for Friday.
Three engines and one fire crew will control the burn.
County/Cal Fire, the county Air Pollution Control District and the county Agriculture Department are working together on the planned burn to document and study the effects of using prescribed fire as a management tool for controlling medusahead grass, an invasive weed that overcrowds native species in pastures and rangelands. The grassy weed is also said to increase fire danger as it builds up year after year.
People in the southern end of San Luis Obispo or traveling Edna Road and Orcutt Road may see smoke on the east side of Edna Valley near Biddle Road from 9 a.m. to 4 p.m. Friday.
The project is dependent on weather and will be rescheduled if conditions that day could interfere with putting out the fire or dispersing the smoke.