The USDA released their 2014 Cotton Varieties Planted Report on September 12, 2014. Stoneville 4946 GLB2 was the top planted variety in Mississippi this year followed by Phytogen 499 WRF and ST 5289 GLT. The entire report may be accessed using the link below:
Cotton acreage by variety for Mississippi is presented in the . . . → Read More: 2014 Cotton Varieties Planted Report
Defoliation season is upon us and as such, the 2014 Mid-South Defoliation Guide has been updated and is ready for use. Those who have worked with cotton fully understand the challenges associated with defoliation. Further compounding an already difficult task is the forecast of uncertain weather over the next several days. The 2014 Cotton Defoliation Guide . . . → Read More: 2014 Cotton Defoliation Guide
We have had numerous calls over the last couple weeks about small, 2-5 day old larvae, under bloom tags in Bt cotton that is near, at, or beyond cutout. All of the research done to this point suggests that cotton is safe from bollworm damage when it reaches node above white flower 5 plus 300 heat units. . . . → Read More: When to Terminate Bollworm Sprays in Late Season Bt Cotton
As we approach the end of August, terminating cotton irrigation is on the mind of many folks. In cotton, we recommend terminating furrow irrigation at first cracked boll. If you anticipate bolls opening in the immediate future and have been dry for some time, a final irrigation event may be in order. However, once bolls begin . . . → Read More: Cotton Irrigation Termination
Over the last 7 days we have had numerous reports of high bollworm numbers in some BollGard II, TwinLink, and WideStrike fields in the Mississippi Delta. We have seen fields in the past that reach treatable levels but some reports are much higher than we have seen in recent years. At this time there does not appear to be any specific varieties that are adversely affected more than others. It appears to be a function of high pressure in isolated areas at this time. . . . → Read More: Bollworms in Dual Gene Bt Cotton: Control and Expectations
The last effective bloom date is the last date that a white flower will accumulate enough heat units to mature into a harvestable boll. Generally speaking it takes 850 heat units for a white flower to mature into a harvestable boll. Using 30-year historical weather data from the National Climatic Data Center, the last effective bloom . . . → Read More: Last Effective Bloom Date in Cotton
This week we encountered another issue with a surge valve. After irrigating with a surge valve the producer noted that neither the 6” nor 12” sensors responded to the irrigation. When investigating the problem it appeared that the grower had done as instructed, making the proper adjustments to the advance cycle. What’s going on? Further investigation . . . → Read More: Another Surge Valve Experience!
The evolution of cotton cultivars has led to higher yield potentials and shorter growing seasons compared to the historical full season cultivars favored in the Mid-South. These newer, faster fruiting cultivars may require more nutrients than older outdated cultivars. Recently, across the Mid-South, many consultants, state extension and research specialists have observed numerous cases of potash . . . → Read More: Late Season Potash Deficiency in Cotton
We had a few calls over the last week about poor control of cotton aphid with Transform. In all of those cases, the field was actually sprayed for plant bugs with a 1.5 oz rate of Transform. That rate should be very effective on cotton aphid based on previous experience. As a result, we collected aphids from three different fields this week to test their susceptibility to Transform. . . . → Read More: Managing Cotton Aphids in 2014
The North Mississippi Research and Extension Center’s Agronomic Row Crops Field Day on Thursday, August 7 will present the latest research to the area’s row-crop farmers and consultants. The field day will be from 8 a.m. to 1:30 p.m. at the Lee County Agri-Center Magnolia Conference Center on Highway 145 South in Verona.
. . . → Read More: North Mississippi Research and Extension Center’s Agronomic Row Crops Field Day on Thursday, August 7