Evaluating a field nitrate test for sudangrass hay to prevent nitrate poisoning

The objective of this study was to compare a field nitrate test using two different test strips to the hay nitrate concentrations determined at a commercial laboratory. Twelve samples of sudangrass hay collected in 2006 through 2008 were used to compare the nitrate concentration determined at a commercial laboratory using the RQflex Reflectometer method to those determined by a field...