RESPOSTAS FISIOLÓGICAS E COMPONENTES DE PRODUÇÃO DO SORGO (Sorghum bicolor [L.]Moench) SUBMETIDO A APLICAÇÃO DO PRINCÍPIO ATIVO TEMBOTRIONE

Abstract

Sorghum gained space among producers and started to be used as a substitute for corn because of its best cost-benefit in different environments. The occurrence of weeds is one of the factors that limit the cultivation of sorghum. Thus, the objective of this work was to evaluate the physiological, biometric and production responses of sorghum (Sorghum bicolor [L.] Moench) to the tembotrione application at different times and doses. The trial was conducted in the experimental area of Progresso Consultoria e Pesquisa. Under no-tillage, with 0.5m row spacing and 10 plants per meter. The statistical design was in randomized blocks in a factorial scheme 3 (doses of Tembotrione) x 4 (times of applications) with four replications. The study allowed to observe that the sorghum culture showed productivity when submitted to the application of the active ingredient Tembotrione in the stage V4 and also in V3, regardless of the doses, being the stage of the application the differential for the result of the herbicide, therefore, the application in the adequate stage allowed greater growth and development of the plant regarding survival, flowering, growth / height and other analyzed physiological factors.