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Hormone Herbicide Damage Cotton Aphids on the Rise Cotton aphids showed increases in some fields, and decreases in others this week. Some insecticide applications were made for aphids. Beneficial insect activity was on the increase in some fields which helped to control the pests in some fields. Lady beetles and aphid parasites were very active on aphids in cotton this week. Boll Weevils Still High in Some Traps Boll weevil numbers showed increases in many traps across the LRGV this week. (See attached weevil trap records) Some traps showed lower counts this week than last, but overall, it appears as if more weevils still are around in large numbers. Growers still have the next week or two to make overwintered weevil treatments if their field situations warrant. This looks like a good year to be conducting those treatments. Light Bollworm Damage Noted Bollworms were more numerous in some fields this week. Some squares
on the ground and a few worms in plants were observed in numerous
fields in the mid-Valley area early this week. Counts of worms
ranged from 0 to 5 larvae per 100 plants. Damaged square counts
ranged from 0 to 8 per 100 plants. |
A report of hormone herbicide damaged cotton was received this
week. Damage intensity was reported to range from none observed
to plants which were severely affected. Numerous fields in the
mid-Valley area were reported to have some damaged plants. The
source of the herbicide contamination was not determined by the
end of this week. A strong inversion layer over the entire LRGV
this week could be why the herbicide damage was being detected
over such a large area. Any hormone herbicide applied under the
wrong conditions could lead to some plants being affected while
others in the same field or area would not be affected. The inversion
layer also would make detecting the actual source of the herbicide
more difficult.Educational
programs conducted by the Texas Agricultural Extension Service serve people
of all ages regardless of socioeconomic level, race, color, sex, religion,
disability or national origin.
The Texas A&M
University System, U.S. Department of Agriculture, and the County Commissioners
Courts of Texas Cooperating.
