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Duas variedades de quiabeiro foram testadas, em condições de casa de vegetação, com solo de textura areno-barrenta, na sua tolerância para 16 herbicidas, cada qual aplicado em uma única dose. Dentre os herbicidas aplicados em pré-plantio incorporado o triflu-ralin destacou-se no combate às ervas daninhas gramíneas e não causou nenhum dano para a planta do quiabeiro. Os herbicidas cloroxuron, linuron, norea e propachlor mostraram ótimos resultados no cambate às ervas más e quanto à tolerância dessa malvácea. Do grupo das triazinas, todos os herbicidas usados nas condições do teste provocaram danos para o quiabeiro. Two okra (Hibiscus esculentus L.) varieties were tested for their tolerance to sixteen herbicides at one rate each, as a pre-planting and as a pre-emergence applications in greenhouse trials. The results with the incorporated herbicides showed that only tri-fluralin at 0,75 kg/ha active ingredient was promising to this crop. Different results were obtained with the pre-emergence applications of the group of urea and anilide herbicides. While no symptoms of injury were observed with chloroxuron, norea, linuron, and propachlor, injury symptoms were evident with diuron, fluometuron, metobromuron and siduron. The four triazine herbicides were very damaging to the okra plants. Under the conditions of these tests, only the herbicides trifluralin, chloroxuron, norea, and linuron were promising to the okra crop

Efeito de alguns herbicidas na cultura do quiabeiro, em testes efetuados em casa de vegetação