Bragantia (2008) 67, 921-926
Maria Aparecida Nogueira Sediyama, Rogério Soares de Freitas, Pedro Carlos Pereira, Tocio Sediyama, Maria Helena Tabim Mascarenhas and Francisco Affonso Ferreira (2008)
Avaliação de herbicidas no controle de plantas daninhas em mandioquinha-salsa
[Herbicide efficiency in controlling weeds in Peruvian carrot]
Bragantia 67 (4), 921-926
Abstract: The efficiency of herbicides applied in pre- and post-emergence for weed control in Peruvian carrot production was evaluated at the EPAMIG Experimental Farm, Oratórios, Minas Gerais State, from May to December, 2002. The experiment was arranged in a randomized block design, with four replications and 15 treatments, including two controls (with and without weeding). Pre- and post-emergence herbicides were used in each treatment applied at 3 and 45 days after planting (DAP), respectively. Efficiency and toxicity were evaluated at 60 DAP and weed dry matter yield at 60 and 130 DAP. At the time of harvest, the yield of root, crown and aerial parts were evaluated. There were no differences among treatments for plant emergence. Plant emergence was highest at 45 DAP and later, followed by a decrease in the stand when atrazine + mineral oil and oxadiazon were used in pre-emergence. Despite being efficient, these herbicides caused toxicity to the crop. The following treatments stood out for root yield: atrazine + fluazifop-p-butil, diuron + fluazifop-p-butil, diuron + oxadiazon, linuron + fluazifop-p-butil, metolachlor + metribuzin + linuron e oxadiazon + diuron, giving good weed control and yield of commercial roots similar to the control kept with no weed (8.62 t ha-1).
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Research topic(s) for pests/diseases/weeds:
control - general
