Category Archives: Diseases

Last Effective Bloom Date: how is it calculated and what does it mean?

Author: Tyson Raper, Cotton & Small Grains Specialist 1 Comment

IMG_1876By definition, the last effective bloom date is the day in which the probability of a new flower developing into a boll and making its way into the basket declines to below 50%.  Since it is unlikely (probability less than 50%) that fruiting positions which develop after this date will contribute to yield, end-of-season insecticide termination and defoliation recommendations for our area are based upon protecting/managing  those positions which will be flowering Continue reading

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Cotton Progress/Heat Unit Accumulation for 2015

Author: Tyson Raper, Cotton & Small Grains Specialist Comments Off

IMG_1344
A rough start for many of TN’s cotton acres has turned into a decent summer for the majority of our acreage.  This is very evident when looking at accumulated heat units noted at the West Tennessee Research and Education Center in Jackson, TN.  As you can see in the below graph, we are quite a bit ahead of the last two years on accumulated heat units.  Warm temperatures in mid/late June and timely rains have Continue reading

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Final UT Soybean Scout School – July 14, Robertson County

Author: Scott Stewart, IPM Extension Specialist 2 Comments
Soybean Looper
Soybean Looper

The remaining Soybean Scout School is scheduled for 9:30 AM in Robertson County (see below). Scout Schools are 2-2.5 hour, field-side programs about the nuts and bolts of soybean growth and pest management. They are sponsored in part by the Tennessee Soybean Promotion Board and the USB. Scouting notebooks and sweep nets will be provided to participants while supplies last. Continue reading

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New publication: Guide to Earliness Management in Short-season Cotton Production

Author: Tyson Raper, Cotton & Small Grains Specialist Comments Off

Tennessee cotton is finally ‘growing off’.  Still, here on the 3rd day of July, it appears few farms will reach the coveted ‘bloom by the 4th’.  Although the environment has played a dominate role in maturity up to this point, management decisions emphasizing earliness have been particularly useful in 2015.  This marks the third consecutive year in which managing for earliness has a marked effect on crop maturity by early July. earliness_2015_TN

On the heels of last year’s delayed crop, Dr. Owen Gwathmey and I began discussing potential benefits of managing a cotton crop for earliness and the management practices which encourage timely maturity and harvest with colleagues both within and beyond the University of Tennessee.  We have summarized these thoughts in the attached Guide to Earliness Management in Short-season Cotton Production (PB1830)Continue reading

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Reminder: UT Cotton Scout School, May 29th

Author: Scott Stewart, IPM Extension Specialist Comments Off

The annual UT Cotton Scout School will be held on Friday, May 29th in Room A at the West Tennessee Research and Education Center (605 Airways Blvd, Jackson). Registration will begin at 8:00 AM with the official program starting at 8:30. It will end with a lunch, but those interested can attend a short  ‘go to the field’ session after lunch. We hope to increase the hands-on portion of the program this year. Topics will include crop development, insect and weed identification, scouting techniques, and more. No registration fee or preregistration is required.

 

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