Premium
Effect of Triazine Herbicides on the Prussic Acid Content and Forage Yield of Sorghums 1
Author(s) -
Brown A. R.,
Beaty E. R.
Publication year - 1970
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1970.00021962006200010032x
Subject(s) - atrazine , forage , agronomy , sorghum , biology , weed control , acetochlor , pesticide
Prometryne and atrazine were applied preemergence at 2.24 and 4.48 kg/ha on five hybrid forage sorghums in 1965. Propazine preemergence and atrazine postemergence were applied at the same rates in 1966 and 1967. Forage was harvested in the boot stage simulating green chop. A l0‐cm stubble was left to facilitate regrowth. Prussic acid was determined qualitatively by the A.O.A.C. Na‐picrate paper method. The use of prometryne, atrazine, and propazine as herbicides for weed control in forage sorghums did not increase the prussic acid content of the forage. The 2.24‐ and 4.48‐ kg/ha rates of prometryne and atrazine applied preemergence depressed forage yields in 1965. The 2.24‐ and 4.48‐kg/ha rates of atrazine postemergence and propazine postemergence did not reduce forage yields of any forage sorghums in 1966 and 1967 except ‘Dekalb SX‐11’ which was drastically reduced by the higher rate of atrazine.