Desempenho fitométrico do milho sob efeito de doses de trinexapac-ethyl e clomazone

The productive increase of the maize crop can be maximized by crop densification and, for this, the use of herbicides and growth regulators, because it favors the reduction of plant size, becomes an important tool. Thus, the objective of this study was to evaluate the rates of growth reducers on the phytometric performance of maize simple hybrids. The design was completely randomized, in a 2 x 5 factorial scheme, with four replications. Growth factors (trinexapac-ethyl and clomazone) were considered as the first factor and in the second, the five doses of each reducer (0, 50, 100, 200 and 400 g i.a. ha-1) were considered. The trinexapac-ethyl and clomazone growth modifiers modify the phytometric performance of maize plants. About 113 g i.a. ha-1 of clomazone provides an increase in stem diameter and fresh mass. The herbicide clomazone can also be used as a growth-reducing agent.