ARSENIC, BORON, MOLYBDENUM, AND SELENIUM IN SUCCESSIVE CUTTINGS OF FORAGE CROPS FIELD-GROWN ON FLY-ASH AMENDED SOIL

Alfalfa, birdsfoot trefoil, brome, orchard grass, and timothy were grown on soil amended with 112.5 metric tons per hectare of coal fly ash and untreated soil. Five successive cuttings of each crop were analyzed for arsenic, boron, molybdenum, and selenium. Of the fly ash treated crops boron showed a consistent increase mainly in the legumes, while selenium increased mainly in the grasses. Molybdenum showed a consistent increase in all of the cuttings of all crops grown on fly ash. Arsenic increased mostly in the first cutting of the crops. Crop yields on the two treatments appeared comparable. © 1979, American Chemical Society. All rights reserved.