Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

Curvas de dose-resposta de herbicidas aplicados em pré-emergência de Euphorbia hyssopifolia L.

2024; Sindicato das Secretárias do Estado de São Paulo; Volume: 15; Issue: 7 Linguagem: Inglês

10.7769/gesec.v15i7.3910

2178-9010

Hilda Rafaella da Silva Santos, G. P. de Oliveira, Renan Cantalice de Souza, Ana Rosa de Oliveira Farias, Leandro Lima Casado dos Santos, Bartolomeu Silva de Sousa Júnior, Ramon da Silva Souza, Jorge Luíz Xavier Lins Cunha, Gabriela Castelo Branco Oliveira, Natália Helena Malta Soares, Rafaela Ferreira da Silva,

Growth and nutrition in plants

The species Euphorbia hyssopifolia L. belongs to the Euphorbiaceae family, and occurs in pasture areas, roads and sugarcane fields. Therefore, it can interfere with agricultural production and thus needs to be managed. The key to solving this problem is the construction of dose-response curves with herbicides commonly registered for crops. Thus, the present work aims to use dose-response curves with herbicides widely used in sugarcane cultivation belonging to the mechanisms of action of ALS inhibitors (acetolactate synthase enzyme), carotenoid biosynthesis inhibitors, photosystem II (PS II), cellulose biosynthesis inhibitors, protox inhibitors (protoporphyrinogen oxidase enzyme) and VLCFA inhibitors (very long chain fatty acids), for the control of E. hyssopifolia. The experiments were conducted in a greenhouse at the Engineering and Agricultural Sciences Campus of the Federal University of Alagoas, with pre-emergence application of weeds, the herbicides diclosulam, imazapic, metsulfuron-methyl, clomazone, isoxaflutole, indaziflam, hexazinone, tebuthiuron, amicarbazone, flumioxazin, oxyfluorfen, sulfentrazone, s-metolachlor and pyroxasulfone in increasing doses of: 0; 12.5; 25; 50; 100; 200 and 400% at the recommended dose for sugar cane. As a result of the study, E. hyssopifolia showed greater sensitivity to the herbicides diclosulam, imazapic, metsulfuron-methyl, clomazone, hexazinone, indaziflam, flumioxazin, oxyfluorfen and pyroxasulfone, as the lethality of their doses occurred below 20% of the commercial dose indicated for sugar cane crops. As for the herbicides isoxaflutole, tebuthiuron, amicarbazone, sulfentrazone and s-metolachlor, the species exhibited lower sensitivity, with a lethal dose recorded above 50% of the respective recommended commercial dose.