What is in this article?:
- Go on high alert for lygus pressure
- Phenoxy herbicide drift
- June is key month to monitor closely for lygus bug infestations.
- San Joaquin Valley cotton crop progressing very well compared to past two seasons.
- If lygus show up, they'll be from nearby crops like safflower and alfalfa.
Phenoxy herbicide drift
The biggest concern right now, according to Goodell, is the possible loss of squares from the phenoxy herbicide drift that is being seen in the valley.
(For more, see: SJV phenoxy drift cotton damage widespread)
Drift from a pasture application of 2,4-D in Merced County in early June has damaged cotton as far south as Kern County. Officials are still assessing the damage levels. So far, Dan Munk, Fresno County UC cotton farm advisor, said he has not seen any square losses due to the drift. However, UC Merced farm advisor emeritus Bill Weir, has estimated a 15 percent to 20 percent yield loss in fields close to the application.
This, says Goodell, could affect square retention evaluations when assessing a lygus threat.