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Owen Taylor, Editor

COTTON NEWS:

Closing Cotton, 11-12: Closes Lower in Heavy Dealings. (Read More)

Delta Cotton Harvest Reports, 11-12: Struggling To Finish The 2009 Crop (Read More)

Southeast Cotton Harvest Report, 11-12: Some progress, but Ida is a concern (Read More)

Audio: Cotton Conference Call, 11-12: Ag Marketing Network panel discusses latest USDA report, possible market direction (Read More)

Opening Cotton, 11-12: Opening Cotton: Extends Sharp Midweek Downturn. (Read More)

K. Good's Farm Policy, 11-12: Climate Issues and Agriculture; Food Security; and Food Safety. (Read More)

Closing Cotton, 11-11: Market Tumbles from New 13-Month Highs (Read More)

Cotton Market Comments, Carl Anderson, 11-11: Adverse weather cuts U.S. Production 502,000 bales to smallest crop in 20 years. (Read More)

Resistant Weeds in the Future, 11-11: Weeds Harder to Kill in Soybeans, Rice, Corn, Wheat (Read More)

Texas: Subsurface Drip Irrigation, 11-11: If it works here, it will work anywhere. (Read More)

Texas Crop, Weather, 11-10: Pesticide applicator training set Dec. 1 and Dec. 3 at Overton. (Read More)

Weather: Making NOAA Climate Forecasts Useful to Farmers 11-9: Short-term variations or departures from the long-term averages (Read More)

Louisiana Food and Fiber, 11-9: Current production situation. (Read More)

Ag Report (E-Central La.), 11-9: Lots of cotton acres finished; harvestable soybeans are probably in the elevators; rice harvest going slow--patience, tracks and drainage required; eighty percent of intended wheat acres planted this past week.| (Read More)

Tennessee Market Highlights, 11-6: Crop market comments by Chuck Danehower; Livestock comments by Emmit L. Rawls. (Read More)

Arkansas Bi-Weekly Market Briefings, 11-6: Soybeans have traded sideways over the past four weeks; harvest moves into high gear; wheat lost momentum; cotton gets a boost; rice futures broke resistance (Read More)

Monsanto Opens Its First Research Center In China 11-4: Company recently signed research agreement with major Chinese university (Read More)

Arkansas: Impact of Rain is Being Felt in Chicot County: Cotton yields for 2009 cut in half, beans hit hard due to heavy rains in last 6 weeks (Read More)

Nunn Cotton Letter, 11-1: Still trying to estimate the Delta crop (Read More)

Mississippi Field Notes (Central Miss), 11-2: Corn - Is It Still A Contender For Mississippi Acreage? (Read More)

Mississippi Ag Report, USDA, November.: Mississippi cotton ginned as of October 15, 2009, represents only 1 percent of the production forecast of 540,000 bales. During same period last year, 22 percent of the cotton had been ginned. (Read More)

Mississippi Field Crops Newsletter, 10-28: Soybeans in fairly good condition; Heavy losses in corn; Cotton in poor condition. (Read More)

Arkansas Cotton Update, 10-24: Weather driving the market; harvest progress limited over the next week, chances of rain return. (Read More)

Louisiana Cotton Bulletin, 10-23: Atrocious crop development and harvest conditions (Read More)

Mississippi: Excessive fall rains leave the state soggy 10-22: A 7-week Autumn stretch plays havoc with 2009 crop, complicates 2010 planting (Read More)

 

Texas:

Corn earworm resistance turning up early

AgFax.Com - Your Online Ag News Source

By Ames Herbert

Virginia Extension Entomologist

Our corn earworm pyrethroid susceptibility monitoring program indicates a possible problem in the making.

As you may recall, each year we assess the susceptibility of corn earworm to pyrethroids using the standard AVT (adult vial test) process. This involves collecting live moths using pheromone baited traps from multiple locations across the area.

Moths are individually placed into vials pre-treated with cypermethrin (the standard used across the southeastern states) and assessed for mortality after 24 hours. If moths survive this 24 hour exposure, they are considered to be “resistant”.

The percentage of those that survive provides some indication of what growers might expect to see when they apply pyrethroids to crops (soybean, cotton, peanuts). Although not a perfect system for determining actual resistance levels in the population, this procedure does provide valuable insight.

For example, last year we had unusually large numbers of survivors. Whereas in previous years we had seen 5% to 10% survivors, in 2008, survivorship in late June exceeded 20%, and then increased to over 40% by August. Over the course of the summer, we received several calls about spray failures: cases where application of normal rates of commonly used pyrethroids did not provide adequate levels of corn earworm control.

So, what is the situation this year? Things do not look good.

We started the season in early June with less than 10% survivors (see the line graphs, 2008 on the left side, 2009 on the right side) but are now at over 30% survivorship, even higher than at this time last year.

Granted these data are based on a very small subsample of moths (744 moths to date), but all indications are that we may be in for some problems. Of course things could change as we progress through the season. We will continue to provide updates.