Tag Archives: Prussic Acid

Prussic Acid and Nitrate in Forages, Especially Sorghums

Dr. Calvin Trostle, Extension Agronomy, TAMU Dept. of Soil & Crop Sciences, Lubbock, (806) 746-6101, ctrostle@ag.tamu.edu   A short version of this item originally appeared in the “Sorghum Insider,” an online newsletter of the Texas Grain Sorghum Association.   I have received several calls from growers in the past three weeks about prussic acid and nitrate accumulation in forages.  These inquiries are routine in the fall starting in mid-October in the Texas High Plains as the first heavy frosts and freezes occur.  Then questions progress downstate as low… Read More →

Fall Concerns about Prussic Acid & Nitrate in Sorghums

Dr. Calvin Trostle, Extension Agronomy, TAMU Dept. of Soil & Crop Sciences, Lubbock, (806) 746-6101, ctrostle@ag.tamu.edu When our next Row Crops Newsletter is published in early November, a large portion of Texas will have seen heavy frost and a freeze on some sorghums.  So, this is good time to update Texas on prussic acid (a plant form of cyanide) and nitrates in sorghums.  These include sorghum/sudans (haygrazers), forage sorghums, and also grain sorghum where cattle will graze after harvest or on drought-failed grain sorghum (Fig. 1).  Sorghum after… Read More →