EFFECTS OF (2-CHLOROETHYL) TRIMETHYLAMMONIUM CHLORIDE (CCC) ON CERTAIN AGRONOMIC TRAITS OF OATS AND TRITICALE

Abstract

The effects of (2-chloroethyl) trimethylammonium chloride (CCC) on triticale (cult Rosner) and oats (cult Harmon, Rodney) was evaluated agronomically. In a greenhouse experiment, the application of CCC at rates of 3.0 and 6.0 kg/ha at the three-leaf stage did not decrease the mature height of oats; but the higher rate reduced the mature height of triticale. At the five-leaf stage, both rates reduced the mature height of both species. In a field experiment, CCC was applied only at the five-leaf stage. The mature heights of both species were reduced by a rate of 3.0 kg/ha and a significantly greater reduction was obtained with 6.0 kg/ha. These reductions were less under a high nitrogen regime. Lodging of oats, which occurred only under high nitrogen, was reduced by CCC, the higher rate reducing lodging more than the lower. Oat yields and 1000 kernel weights were not affected by treatment under either fertility regime; but the protein content of Rodney was depressed whereas that of Harmon was not. When no lodging occurred, CCC at 6.0 kg/ha increased triticale yields only on plots that received no nitrogen. Protein contents and 1000 kernel weights of triticale were unchanged in all treatments.