'Hardlock' cotton problems persist in some Texas fields as harvest activities continue, according to a Texas AgriLife Extension Service expert.

"The hardlock cotton boll either does not open or only opens slightly, and little lint is captured by a cotton picker or stripper," said Dr. Gaylon Morgan, AgriLife Extension state cotton specialist.

The problem persists among the Brazos bottom and the Blacklands region, according to Morgan. A few field trials at the AgriLife Extension and Texas AgriLife Research plots near College Station have also been affected. And the Upper Gulf Coast region, which is winding down harvest activities, has had the problem as well.

Morgan said he thinks two factors have contributed to the problem this year.