All posts by Tyson Raper, Cotton & Small Grains Specialist

2014 University of Tennessee XtendFlex™ Cotton Variety Trials

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Tyson Raper and Larry Steckel

During the 2014 growing season, the University of Tennessee Cotton Variety Testing program was given an opportunity to evaluate several of the new Monsanto Bollgard II® XtendFlex™ cotton varieties. Given the recent de-regulation of this trait, many may find this data of interest. (De-regulation of dicamba applications to these varieties is still pending.) Continue reading


2015 Cotton Focus Agenda

2015_focusbannerThe 2015 Cotton Focus Agenda is now available online.  This year’s meeting will be held at the DoubleTree (1770 Highway 45 Bypass) in Jackson, TN on Thursday, February 12th.   Registration begins at 8:00 AM with opening remarks beginning at 8:30 AM.  Specialists from the University of Tennessee, Mississippi State University and the National Cotton Council will Continue reading


Wheat N considerations for early 2015

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wheat_cottonstubble2

I’ve recently received several calls concerning N applications on wheat. Although this cold front has made it easier to get across wet fields, it is still early for the first split in a late winter/early spring split-N application approach. To make the most of the first split, target ‘spring greenup’, or the period in which wheat breaks dormancy and begins to grow rapidly (typically Feekes 3 or Zadoks 25). Delaying applications until this point can help ensure the applied N is available to the developing crop by reducing the potential for N loss. The current N demand of the dormant crop Continue reading


2014 TN Cotton Variety Trial Results

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pb1742_picThe 2014 TN Cotton Variety Trial Results Publication (PB1742) is now available online. This document contains detailed results from all harvested trails in the 2014 University of Tennessee Cotton Variety Testing program.  This expanded publication follows the recently published summary publication, 2015 TN Cotton Variety Guide (W285), which was released a few weeks ago.

The tech-trait diversity in the top performers highlights the excellent yield potential, stability and fiber quality currently available in commercial cultivars irregardless of tech platform.   Given many of these currently-available varieties have been moved forward into new tech-trait platforms, it appears producers will be deciding between several very viable options for many years to come. Continue reading


Defoliation Timing in 2014

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20140827_17There comes a point late in the season where defoliation timing begins to lean more heavily on the forecast and historical temperature normals associated with the current date than our maturity measurements (NACBs, %open, uppermost harvestable boll maturity as determined by the sharp-knife technique, etc.).  In West Tennessee, I would argue that we are very rapidly approaching that time frame.  The 5 day forecast here on the 28th day of Sept. for West TN indicates the next few days appear to be very favorable Continue reading