Annual bluegrass control aided by soil analysis for arsenic
- R.P. Freeborg and
- W.H. Daniel
The objective of this study was to develop a procedure to test soil for available arsenic to supplement the use of Poa annua L. (annual bluegrass) as a bioassay plant in determining toxic levels of arsenic required for its control. This soil test procedure is similar to that routinely used in the extraction of available phosphorus. Arsenic and phosphorus are extracted with Bray P-1 (0.03N NH4F; 0.025N HCl) from 1.5 g of soil. Soils are also analyzed for percentage of sand and silt. An estimate is made of existing annual bluegrass population on the site. These data are then used in the determination of arsenic concentrations required to obtain a desired percentage control. Additional index words: Arsenic toxicity, Calcium arsenate, Soil test, Atomic absorption, Bioassay, Poa annua L.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
Copyright © 1974. . Copyright 1974 by the American Society of Agronomy, Inc. and the Crop Science Society of America, Inc., 5585 Guilford Rd., Madison, WI 53711 USA