Do weed populations change during a drought? Does drought favor certain species? Does annual or perennial species matter? During this four year period of drought in California, have they changed? What are the populations of annual and perennial weeds? With a limiting growth factor, in this case water, weeds become more prominent and which of them will or could disappear?
In urban landscapes, where turf grass areas are being renovated, or in non-irrigated land that has been farmed, but furloughed, or in non-cropped roadsides or wasteland, are we seeing life-cycle species shifts? Or is it that we see a loss or decreased competitiveness of annual species, thus perennial species can be observed?
I will give the example of...
- Author: Carl Bell
- Posted by: Gale Perez
This blog should be filed under, “They'll try anything, especially if they think there is lots of money in it and they don't know the business.”
Since I moved from an agricultural assignment 14 years ago in the low desert to do invasive plant extension work I have seen a whole bunch of strange ideas and practices floated out there that are sexy, but don't make sense. These have included steaming with a sugar-enhanced foam, tons of sugar dumped on the soil to fool...
- Author: Clyde Elmore, Extension Weed Specialist (Emeritus)
- Posted By: Gale Perez
We have all heard that turf grass is competitive to weeds and other plants in the landscape. There are several turf grass types grown in California. In southern California, Bermuda grass is the more common planting though Turf-type tall fesc ue is also used as well as other species to a lesser extent. Smooth and large crabgrass are the most prevalent summer annual grass weeds found in turfgrass in California. Can we devise systems using turf type, renovation (planting) time to establish a competitive, cool season, tall fescue turf and control crabgrass?
Several years ago with graduate student J. Graham Davis, and current farm advisor in Napa County, John Roncoroni, we developed experiments to study this concept. We chose...