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P.O.
Box 237, Garden City, Texas 79739
Home Phone: 915-354-2466 Fax: 915-354-2348 |
Office
Phone: 915-354-2477
Daily Insect Update: 915-354-2476 E-Mail: w-multer@tamu.edu |
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Website:
http://entowww.tamu.edu
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| VOL. 22, NO. 10 |
Warren
L. Multer, EA/IPM
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July
19, 2002
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PEST MANAGEMENT REPORT NEWS ABOUT
INTEGRATED PEST MANAGEMENT IN GLASSCOCK, REAGAN AND UPTON COUNTIES |
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GENERAL SITUATION Dry with moderate temperatures. We have been getting excellent cotton growing weather if you have the soil moisture. Cotton ranges from 1st square on the June 15th planted cotton to full size bolls on the May 1st cotton. Bollworm egg-lay has dropped off some but worms are still present in varying numbers. SCOUT SAFETY Please contact
your scouts or me if you are spraying the field they are scouting with
an insecticide. We do not want anyone to be exposed unnecessarily to
pesticides. APHIDS Since last week we have been finding more instances of aphid activity in several fields. They range from a few aphids in a terminal or square to several plants in a spot with several hundred aphids per leaf. We have not seen economic infestation yet but need to keep an eye on aphid populations especially in fields where pyrethroids have been sprayed for worms. FLEAHOPPERS Fleahoppers have not been a problem in most fields this season and most are past the susceptible stage but some of the late planted and replanted cotton that is in the first week or two of squaring is still susceptible and does not need to be delayed any more. |
BOLLWORM Eggs ranged from 0-30,000 per acre or 0-50 per 100 plants. The higher numbers were from early this week and now they have dropped off. Small worms have ranged from 0-42,000 per acre or 0-65 per 100 plants. Medium worms ranged from 0-4600 per acre or 0-8 per 100 plants. The heavier activity has generally been found from Garden City West to Highway 137 and southeast of St. Lawrence. The preliminary control of worms from fields treated late last week has shown good control with Tracer® and several of the pyrethroids. It will take 3-4 days for some of the worms to die, especially in the Tracer® treated fields. Several people have been questioning me about worms and damage in the Bollgard cotton fields. The worms must ingest plant tissue to pick up the Bt toxin so you will find some damage and some small worms before they die. If you start finding worms that are 1/4-3/8" long in the Bt fields, I would become concerned. |
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Several people have had questions concerning heat unit accumulations. They have been correct except for last week when some data was left out. Some of you have been questioning how on the May 1st planting date we could have more heat units in 2002 then 2001. If you look at temperatures in May, this year was warmer than May of 2001, therefore giving 2002 a head start but June and July have been cooler this year than in 2001. With all of this
said we are progressing well on cotton development but could get into
trouble on some of the latter cotton if temperatures remain lower.
NEW FARM BILL YIELD
AND The Texas Cooperative Extension Ag Economics group has a Website to contact and use a program to determine if you want to update yields or base on your farm. You will need:
Total Cropland on Farm The website is: http://agecoext.tamu.edu
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WEATHER DATA Weather data for the past two weeks is included in the table that follows:
HEAT UNITS averaged 20 per day the past week. Heat units since 5-1 and 5-15 and 6-1 are compared with last year and a five year average in the table below.
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*********************************************************************************************************************************************************** Educational programs conducted by the Texas Agricultural Extension Service serve people of all ages regardless of socioeconomic level, race, color, sex, religion, handicap or national origin. The information given herein is for educational purposes only. References to commercial products or trade names is made with the understanding that no discrimination is intended and no endorsement by the Cooperative Extension Service is implied. ___________________________________________________________________________________________________________
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