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Dois experimentos foram conduzidos visando avaliar o efeito do Cloreto de chlormequat (CCC), aplicado em duas épocas de semeadura, sobre o rendimento de grãos e outras características de quatro cultivares de trigo. Os tratamentos foram as cultivares CEP 19, BR 14, BR 15 e BR 23. As doses de CCC foram de 400g ia/ha em 1989 e 1000g ia/ha em 1990 e as datas de semeadura foram em junho e julho. A característica afetada pelo CCC foi altura de plantas, sendo que o regulador de crescimento não afetou o rendimento de grãos. Conclui-se que outros estudos devem ser feitos para verificar quais os fatores que determinam respostas positivas à aplicação deste regulador de crescimento. Two experiments were conducted aiming to evaluate the effects of the growth regulator CCC [2-Chioroethyl,trimethylammonium chloride] on seed yield and other characteristics of four wheat cultivars on two seeding dates. The treatments were the cultivars CEP 19, BR 14, BR 15 and BR 23 and the CCC doses 400 and 1000g ai/ha in 1989 and 1990 respectively. The seeding dates were in June and July. The only effect observed was a reduction in plant height but there was no increase in grain yield. It was concluded that further studies showld be carried out in order to determine the factors that affect the response of the wheat plant to this growth regulator

Efeito do cloreto de chlormequat sobre quatro cultivares de trigo em duas épocas de semeadura