The Extension Cotton Specialist Working Group, under the leadership of Dr. Seth Byrd, began a podcast earlier this year discussing management decisions and topics important to the industry. In the past two weeks, two episodes have been released which cover harvest aids; the first includes comments from Steve Brown (AL), Camp Hand (GA), and Bill Robertson (TX) discussing methods for scheduling harvest aid applications and application strategies to optimize harvest aid performance; the second includes Guy Collins (NC), Matt Foster (LA), and Tyler Sandlin (North AL) discussing various harvest aid products, tanks mixes, and how to address late season crop issues through harvest aid product and rate selection. These podcasts contain excellent content which will be extremely timely as we move into the next few weeks. Continue reading
28
Sep
2021
We can learn a great deal by comparing notes. Slicing bolls is one of the best ways to time defoliation- and most agree on what represents a ‘mature’ boll (dark seed coat color, no jelly in seed, hard to slice with a sharp knife). But when it comes down to it, there is a large amount of variation in what each of us, as agronomists, consider to be a boll that could potentially be opened by ethephon. With cool temperatures in the forecast on what remains a late crop, many are trying to figure out which bolls might be opened with an application and when to start. To get the conversation started, I texted the above picture to a few dozen individuals within the industry to get their thoughts on this question- what is the lowest number boll you believe you can open with ethephon? 
In the past month, I’ve had the opportunity to walk several excellent fields that will likely be defoliated in September and many of our later planted acres have narrowed the maturity gap despite the weather continuing to fall below our 30 year average for heat unit accumulation. On farm visits throughout this summer, I often found myself repeating the old verbiage about ‘cotton knowing how long it has left in the season’- half to provide a positive outlook on the crop, and half to convince myself that some of this top crop had a chance. We still have a ways to go, but in the last few weeks, that saying about cotton knowing where it is in the season again appears to be true. In this blog, I share a few last-minute management thoughts, make a few comments about defoliating some of our earliest cotton, and highlight a field day coming up next Monday, Sept. 13th in Fayette County.
Over the past few weeks, several have reported poor retention in an area just northwest of Jackson. I’ve spent several days walking some of the impacted fields- this crosses multiple growers and a substantial number of acres- and the cause is becoming more clear. The adjacent image is characteristic of retention and growth noted within the impacted area. In this blog, I attempt to describe the mechanisms that drive environmental shed, our current hypothesis on the cause of poor retention in the area just north of Jackson, and the decisions you’ll need to make if you see this on one of your farms.