T-Y IPM NEWS

news about integrated pest management in Terry and Yoakum counties
Scott A. Russell, EA-IPM
Telephone: (806) 637-4060
Mobile: (806) 893-1041
Fax: (806) 637-2588
E-Mail: sarussel@tamu.edu   http://lubbock.tamu.edu/ipm  
Vol. 3, No. 8
209 South Fifth Street, Brownfield, TX 79316
July 22, 2002

In this issue:
General Situation
Being late, it will be short and to the point.

General Situation:
Generally the cotton crop is moving along well. Most fields could use a good rain, but irrigated cotton looks very good at present. Growth ranges from first bloom on replanted fields to 2-4 bolls on older fields. The only insect of concern has been bollworms. Population densities have really taken a turn upward. As of last Tuesday we began finding populations from 2500 to 25,000 per acre. We have been using a sliding threshold of 5,000 up to 10,000 worms per acre. These worms seem to be moving quickly to squares to feed, spending little time in the terminal and new leaves. In cotton that has good square retention and available water we are using the low end of this threshold. Where water is more limited, or more economic considerations play into it we move up the threshold. There are virtually no aphids present at this time, and beneficial numbers are not extremely high, many producer have chosen to use less expensive pyrethroids because of this. If preserving beneficials and not risking aphid flare-ups is important choose Tracer or Stewart.

Insecticide
Formulated amount
per acre
Capture® 2 E *
2.6 - 6.4 oz
Baythroid ® 2 E *
1.6 - 3.2 oz
Leverage ® 2.7 SE *
3.75 oz
Karate ® 1 E *
3.2 - 5.12 oz
Karate ® 2.08 CS *
1.6 - 2.56 oz
Ammo ® 2.5 E *
2 - 5 oz
Decis ® 1.5 E *
1.62 - 2.56 oz
Asana XL ® 0.66 E *
5.8 - 9.6 oz
Steward ® 1.25 SC
9.2 - 11.3
Lannate ® 2.4 LV
1.5 pts
Methyl Parathion (4E)
2.5 - 4 pts
Curacron ® 8 E
8 - 16 oz
Tracer ® 4 SC
2.14 - 2.9 oz
Larvin® 3.2 F
1.5 - 2.25 pts
Scout® X-tra 0.9 E *
2.56 - 3.37 oz
Fury ® 1.5 E *
2.82 - 3.83 oz
* The synthetic pyrethroid insectidides recommended for control of bollworms also will control boll weevil. However, application intervals similar to those recommended for the traditional phosphate insecticides (3 to 5 days under heavy pressure) are necessary to provide adequate control. When treatments are to be made for a bollworm-boll weevil complex a suggested treatment regime is to use a pyrethroid followed 3 to 5 days later by a phosphate or carbamate boll weevil insecticide.

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.
The Texas A&M University System, U.S. Department of Agriculture, and the Commissioners Courts of Texas Cooperating
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Terry and Yoakum County Peanut Tour
9:00 A.M. Thursday
July 25
Meet at the Nikki Vinson Center
110 West Hill Street, Brownfield
Morning coffee and doughnuts available

Tour will include two field stops with discussions by specialists with Texas Cooperative Extension.

2 C.E.U.s. toward T.D.A. licenses will be awarded.


T-Y IPM News is a publication of the Texas Agricultural Extension Service IPM Program in Terry and Yoakum Counties.
Editor: Scott A. Russell
EA-IPM,
Terry & Yoakum Counties		 Production: Bea Pippin


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