Texas Cooperative Extension Service
The Texas A&M University System
 
West Plains
IPM Update

news about integrated pest management in hockley and cochran counties
Kerry Siders, EA-IPM
(806) 894-2406 (phone)
(806) 638-5635(mobile)
(806) 897-3104 (FAX)

E-Mail: k-siders@tamu.edu   http://lubbock.tamu.edu/ipm  

Vol. 6, No. 12
1212 Houston Street, Suite 2, Levelland, TX 79336
August 13, 2001

IN THIS ISSUE:

* Crop Situation
* Peanut Situation
* Up Coming Events
* Sunflower Situation
* Sorghum Situation
* Final Note


Cotton Situation
We are fortunate that it is August 13 and not July 13. Most insect problems which might occur from this point should be short-lived. A majority of the cotton crop in Hockley and Cochran Counties has an average of 2.5 nodes above white flower (NAWF) with a range of 0.4 - 5.5 NAWF. Remember, that the probability of producing a harvestable boll from a white bloom on August 10th is below 50%. The period of August 20 - 25th is what we would consider the last date a bloom might result in a boll which might contribute to yield. This means that protection of any size square is no longer warranted.

Scouts continue to find an occasional cotton bollworm (< 3,000 per acre), beet armyworm (< 1,700 per acre), & Lygus (< 1 per 3 row feet).

No weevil damage or aphids were picked up this last week through normal scouting. By hunting we could find these pests in some fields. Whiteflies not as common this last week. Beneficials are having a hard time sustaining themselves on such small food supply right now. I know that boll weevil trap counts from Extension/PCG Grid traps as well as the Eradication zone traps have increased the past week. I would attribute this increase more to the few weevils leaving a field due to maturity/ poor food source and looking for a less mature/better food source field. Be careful with irrigation at this point. Most areas have had some rain showers now, some more than others. The goal at this point should be to have just enough moisture available to allow bolls present to fully develop and mature. Too much moisture may backfire and can encourage new growth which of course will not contribute to yield, it can detract from what you have already set, and provide excellent food source to develop insect problems such as worms and weevils. We have made it this far into the season with very few insect incidence, let us not drop the ball now and turn that around.

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Peanut Situation

The peanut crop is pretty well set now. As with cotton development at this time the chance of a peg developing into a pod which contributes to yield declines rapidly after this point. Irrigation is still very critical, not so much from allowing for ease of peg penetration but for pod development and maturation. No insect problems have been noted.

UP COMING EVENTS

September 19th - West Texas Ag Chem Conference, Lubbock

September 20th - Farm & Home Show Hockley County, Levelland

September (To Be Announced) - Farm Fair Cochran County, Morton

 

Sunflower Situation
Sunflowers range from ready to be combined to just now flowering. Head moths continue to be a major concern on the late fields. Stalk borers have also caused lodging concerns.

I want to thank three people which have assisted me this summer and have been one of the main source for knowing what is going on in area fields: Kirk Hesse and Justin Hesse served as Field Scouts, and Bryan Henson served as Demonstration Aide - Summer Intern. Thank you and good luck as you return to school this year.

 

West Plains IPM Update is a publication of the Texas Agricultural Extension Service IPM Program in Hockley and Cochran Counties.

Editor: Kerry Siders
Production: Patty Castaneda




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