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- Title
CONTROLE DE PLANTAS DANINHAS NA CULTURA DO MILHO POR MEIO DE HERBICIDAS APLICADOS EM PRÉ-EMERGÊNCIA.
- Authors
Dan, Hugo de Almeida; Barroso, Alberto Leão de Lemos; Dan, Lilian Gomes de Moraes; Finotti, Thiago Rezende; Feldkircher, Cleriston; Santos, Vanessa Soares
- Abstract
This study aimed to estimate the effectiveness of weed control in maize (Zea mays L.), under a no-till system, in the Cerrado (Brazilian Savanna) region, by applying pre-emergence herbicides. Two experiments were carried out in Montevidiu, Goiás State, Brazil, during the 2007/2008 crop, in a randomized block design, with four replications. The following treatments were evaluated: atrazine (1,600 g ha-1), atrazine + s-metolachor (1,665 g ha-1 + 1,305 g ha-1), s-metolachor (1,680 g ha-1), atrazine + simazine (250 g ha-1 + 250 g ha-1), and control with and without weeds. It was found out that, 28 days after the treatments application, the herbicides atrazine and s-metolachor were not effective in controlling Cenchrus echinatus and Alternanthera tenella, respectively. The associations between atrazine + s-metolachor and atrazine + simazine have provided significant increases in the Euphorbia heterophilla and Alternanthera tenella control. The presence of weeds had a negative effect on crop yield.
- Subjects
BRAZIL; WEED control; CORN; HERBICIDES; NO-tillage; ATRAZINE
- Publication
Agricultural Research in the Tropics / Pesquisa Agropecuária Tropical, 2010, Vol 40, Issue 4, p388
- ISSN
1517-6398
- Publication type
Article
- DOI
10.1590/s1983-40632010000400017