Madera County
University of California
Madera County

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Pale Striped Flea Beetle in Seedling Alfalfa

Adult pale striped flea beetle, about 3/16 inches long (Photo:UC IPM)

In the second week of October, we had a one-to-three trifoliate seedling alfalfa field in Tulare County with plants dying on the north end. The surviving seedlings had leaves with holes and ragged...

Posted on Monday, November 5, 2012 at 1:46 PM

Verticillium Wilt of Alfalfa

Verticillium wilt of alfalfa

Verticillium wilt disease of alfalfa is relatively new to California, having first been found in isolated fields in Humboldt and Monterey counties in 1985.  Verticillium wilt is a disease caused...

Posted on Monday, October 29, 2012 at 5:57 PM
  • Author: Vonny M. Barlow

Leafhoppers and overwintering; a southern California perspective

Hopper movement

Several insects can reduce alfalfa yields such as the Empoasca leafhopper group (ELH) which feeds on a wide range of plants and is capable of successful reproduction on over 200 plant species in 25...

Posted on Tuesday, October 23, 2012 at 8:34 AM
  • Author: Vonny M. Barlow

Proper Herbicide Application Timing Critical in Seedling Alfalfa

Winter annual weeds often grow faster than seedling alfalfa especially with a late planting, making herbicide application timing critical.

Many growers have good intentions when it comes to controlling weeds in seedling alfalfa but often fields end up being treated beyond the optimum window. Proper application timing is critical for...

Posted on Monday, October 15, 2012 at 4:57 PM
  • Author: Steve Orloff

Threecornered Alfalfa Hopper Update

Threecornered alfalfa hoppers are out in high numbers and earlier than usual this year.

The threecornered alfalfa hopper is a green, wedge-shaped insect about the size of a Lygus bug. These leafhopper pests have piercing-sucking mouthparts and feed on the stems of alfalfa plants,...

Posted on Wednesday, October 10, 2012 at 4:20 PM

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