SciELO - Scientific Electronic Library Online

vol.21 issue2Biology and management of Cardiospermum halicacabumFloristic composition of weeds in agrosystems of cupuaçu (Theobroma grandiflorum) and peach palm (Bactris gasipaes) author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Planta Daninha

Print version ISSN 0100-8358On-line version ISSN 1806-9681


MACEDO, J.F.; BRANDAO, M.  and  LARA, J.F.R.. Weed survey on corn post-harvest under meadow holm conditions along São Francisco river, Minas Gerais, Brazil. Planta daninha [online]. 2003, vol.21, n.2, pp.239-248. ISSN 0100-8358.

A survey was carried out on the weed populations occurring after harvest in cornfields along the São Francisco River to identify which weeds remained in the 12 municipalities spread along the river, from its headwaters down to "Tres Marias". Ageratum conyzoides L. was the only species found in all the fields surveyed. The species presenting major Importance Value Index (IVI) were: Sida glasiovi K. Schum, Conyza bonariensis (L.) Cronq, Gaya sp. Sida rhombifolia L. and Blainvillea biaristata DC., being also found in one or more places. These plants are sources of food for certain pollinating and pest predating insects. Such surveys may help to adequately choose herbicides to clean up the fields after corn harvest, avoiding improper applications of chemical products, which represent great risks of environmental pollution.

Keywords : sustainable agriculture; integrated management; no-tillage system.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License