Performance of Bt Cotton in Mississippi, 1999.

Becillus thuringiensis (Bt) transgenic cotton accounted for 65 percent of Mississippi's total 1999 cotton acreage. Late season boll damage surveys to compare the performance of Bt and non-Bt cotton varieties revealed that Bt fields experienced less caterpillar induced boll damage and received fewer foliar insecticide treatments. Trends in..

Studies on Hydrolytic Action of Lactic Acid on Cotton Fibres.

A study hydrolyzed cotton fibers using lactic acid treatments with varying times and acid concentrations of 1N, 2.5N, and 10N at the boil. The rate of hydrolysis was rapid shortly after exposure and slowed as the duration of exposure increased. X-ray diffraction and infrared spectroscopy showed that increases in the percentage of crystall..

Assessment of Selected Structural Parameters of Long-Staple Cottons.

A study examined the influence of climatic conditions during cotton plant growth on the supermolecular structure of cotton fibers. Researchers examined Egypt-Giza, Sudan Baracat, India MCU-5, and United States pima long staple cottons using wide angle X-ray diffraction (WAXD), small cottons using wide angle X-ray diffraction (WAXD), small..

Focus on Quality--Breeding through Spinning : What Happened in 1999? Texas-Oklahoma Region.

The Texas and Oklahoma cotton growing region comprises approximately 6 million acres and represents the most diverse environment of the United States Cotton Belt. Plant water stress is generally the greatest limitation to productivity. Both water supply and temperature conditions during boll filling affect lint quality. In 1999, weather a..

Report of the Cottonseed Treatment Committee for 1999.

The 1999 National Cottonseed Treatment Program evaluated cotton seeding survival for a range of fungicide seed treatments under different environmental conditions, levels, and types of pathogens. Chemical industry representatives nominated 16 fungicide seed treatments for the program. The program included a conventional fungicide treatmen..

Studies of the Mechanism(s) of Tobacco Budworm Resistance to Spinosad(Tracer).

An investigation into the toxicity and resistance mechanisms of the first laboratory strain of tobacco budworm that is resistant to spinosad determined that the toxicity ration for spinosad based on differences in the LC(50) between the parental and selected strains in a larval dip bioassay was 245 fold. Insects were also resistant when f..

Monitoring Cotton Plant Growth and Response Using COTMAN to Evaluate Effects of Chemical Control of Cotton Aphid.

An investigation into the effects of a preflower aphid infestation on crop delay used the COTMAN crop management system to evaluate crop response to stress, monitor square retention, and examine treatment effects of crop earliness. Preflower cotton aphid infestation reduced total lint yield. Infestation time extended from squaring node fi..

1999 Year in Review : The Southeast.

A review of the 1999 cotton growing season in the Southeast United States emphasizes that most cotton growers had major financial problems due to poor crops and prices that decreased more than 20 percent in the last two years. The 1999 season continued that trend with poor production and quality and further price decreases. Government pro..

1999 Year in Review : The Mid-South.

A review of the 1999 cotton growing season in the Mid South United States notes that 3.68 million acres were harvested, up 519,000 acres from 1998. The yield was 668 pounds per acre, up 34 pounds from 1998, but low compared with the five year average of 717 pounds per acre. The most frequently planted cotton varieties were Stoneville BXN ..

1999 Year in Review : The Southwest.

Erratic weather characterized the 1999 cotton crop year in the Southwest United States, particularly during planting and harvesting. The high and rolling plains had good subsoil moisture at initial planting. Major thunderstorms with heavy rain and hail, however, resulted in significant losses. July and August were extremely dry, stressing..