Category Archives: 2017

The Risk of Elevated Aflatoxin in Cottonseed Exposed to Prolonged Rain

by Tom Isakeit, Professor and Extension Specialist, Texas AgriLife Extension Service, College Station. As a consequence of the sustained, heavy rain from Hurricane Harvey, mature cotton in the field, or exposed cotton in modules or bales that stayed wet, may be at risk for aflatoxin contamination.  The only way to know for sure is to analyze samples. Aflatoxin contamination is not just a problem in corn and peanuts, but it can also occur in cottonseed.  In Texas, contamination can occur primarily in cotton production areas of south Texas… Read More →

Cotton Growth Stages – Cutout

by Seth Byrd, Assistant Professor & Extension Specialist, Texas A&M AgriLife Extension Service Lubbock, TX; 806.746.6101, and Wayne Keeling,  Professor, Agronomy Systems Weed Science, Lubbock, TX., 806-742-4026, What it is and why it’s important. Cutout and blooming out the top are often confused as the same growth stage. At cutout there are still many potential fruiting sites to be developed, and the timing of cutout is often used as a gauge of the fruiting window and yield potential. Blooming out the top signals the end of… Read More →

Wheat Variety Grain Picks for the Texas High Plains—2017-2018

by Dr. Calvin Trostle, Extension Agronomy, TAMU Soil & Crop Sciences, Lubbock, (806) 723-8432, Dr. Jourdan Bell, Extension Agronomy, TAMU Soil & Crop Sciences, Amarillo, (806) 677-5600, Texas A&M AgriLife Staff in Amarillo and Lubbock have designated our annual wheat grain variety “Picks” for the 2017-2018 Texas High Plains cropping season.  Our ongoing Picks criteria include a minimum of three years of irrigated or dryland data in Texas A&M AgriLife High Plains wheat variety trials across numerous annual locations. Also, a “Pick” variety means this:  “Given… Read More →

What is Causing the Pre-mature Defoliation in Cotton?

by Dr. Tom Isakeit, Extension Plant Pathology; Dr. Gaylon Morgan, Extension Cotton Agronomist Cotton fields in Upper Coast counties of Texas that are experiencing browning or bronzing of the foliage (Figure 1), often accompanied by defoliation, usually have leaf spots.  There can be several different species of fungi associated with these leaf spots.  These are species of the genera Corynespora (Figure 2), Cercospora (Figure 3), Alternaria and Stemphyllium (Figure 4).  Some fields have leaf spots associated with one species only, while several species may be present in other… Read More →

Spray Drift Damage: What Injured Landowners Need to Know

by Tiffany Dowell Lashmet, Texas A&M AgriLife Extension Service Unfortunately, as many farmers know all too well, applications of various pesticides can result in drift and cause damage to neighboring property owners.  In the event this happens, it is important for an injured farmer to know what steps to take and what options are available to remedy the situation. First and foremost, the injured farmer should document any evidence, including taking photographs or samples of damaged crops or foliage, documenting wind speed, direction, temperature, and getting statements from… Read More →

How to Interpret Herbicide Mode of Action?

by Muthu Bagavathiannan, Spencer Samuelson, Josh McGinty, Peter Dotray, Gaylon Morgan Herbicide-resistant weeds are proliferating across Texas. One of the major causes of weed resistance is the use of the same herbicide over and over again without sufficient management herbicide diversity. It is critical that growers must integrate diverse chemical and non-chemical practices to reduce the selection pressure (represented by how quickly a rare resistant plant dominates a field) imposed by any single weed management tool. When multiple tools are used in combination, as opposed to a single… Read More →

How to Address Uneven Emergence in Cotton

by Seth Byrd, Texas A&M AgriLife Extension, Lubbock, TX. Many fields are just seeing some cotton emerge after rains moved across the Texas High Plains in late June.  This is most often the case in dryland fields where cotton was dry planted, or planted into soil with insufficient moisture to result in germination, or in a lot of cases, no moisture at all.  While this was done in hopes that rain would soon follow, for many fields it was over a month before a significant rain was received… Read More →

Insect Pest Management Update

by David Kerns, Professor & IPM Coordinator In cotton we have been seeing a great deal of bollworms activity in Bt cotton and there have been quite a few insecticide applications going out. A lot of these reports have been coming out of the Wharton and Corpus Christi areas, but it is not confined to just those locations. In the Brazos River Bottom, we had a field of WideStrike cotton that virtually had a worm in every terminal and as much as 40% fruit loss in the upper… Read More →

How will the Recent Rain Effect the Sugarcane Aphid on South Texas Sorghum?

by Robert Bowling, Assistant Professor and Extension Specialist IPM; How will the recent rain effect the sugarcane aphid on south Texas sorghum? That remains to be seen but, in the past three years it seems that the sugarcane aphid populations have collapsed about 10 to 14 days following major rain events. For most, the recent rain was less than an inch although some folks had over 3 inches of rain. Higher relative humidity coupled with lower temperatures certainly mean the environmental conditions are favorable for an epizootic…. Read More →

Texas Guar Production for 2017

by Calvin Trostle, Extension Agronomy, Lubbock, (806) 723-8432, Guar production in Texas has fluctuated from only a few thousand acres to over 100,000 acres in recent years.  Currently world guar gum prices are quite low due to the downturn in crude oil prices which has led to a major reduction in oilfield drilling/fracking of new wells or reduced renovation/fracking of existing wells.  When guar prices have been in their historical price range (e.g., gum at $2-3/lb), the value of guar imports through the Port of Houston has… Read More →