Pre- and Post-harvest Aflatoxin in South Texas Grain Sorghum

摘要

Season-long drought in the Coastal Bend of South Texas resulted in three distinct sorghum cropping seasons, or harvests in 1996. These seasons were; 1. normal season with typical July maturity, except for a few fields harvested in early August, 2. late season of fields sown after failed cotton, or for similar reasons that matured in late-August through mid-September, and 3. fall season of fields either sown, or ratooned in July that matured in late-October to early-November. Many of the normal season, drought-stressed fields throughout the Coastal Bend had problems of mixed maturity, that was also reflected in the harvested grain. Grain of mixed maturity needed more drying at the elevators and it was difficult to accurately assess its moisture content.