SciELO - Scientific Electronic Library Online

 
vol.27 issue1Cyperus esculentus handling methods in irrigated riceControl of South African lovegrass (Eragrostis plana) in natural pastures using pre emergent herbicides and different vegetation management methods author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Planta Daninha

Print version ISSN 0100-8358

Abstract

TIMOSSI, P.C.. Management of Digitaria insularis sprouts under no-till corn cultivation. Planta daninha [online]. 2009, vol.27, n.1, pp. 175-179. ISSN 0100-8358.  http://dx.doi.org/10.1590/S0100-83582009000100022.

Total weed control is not always possible under no-till desiccation leading to perennial and increased number of weeds. In no-till cultivation areas with predominant occurrence of Digitaria insularis sprouts, nicosulfuron alone (60 g ha-1) and in tank mix with atrazine (40 + 1.500 g ha-1), foramsulfuron + iodosulfuron-methyl (45 + 3 g ha-1) and mesotrione in tank mix with atrazine (144 + 1.500 g ha-1) were tested in a randomized block design, with four replications. Each plot was 6 x 4 m, containing six corn culture rows. The herbicides were applied with a back spray at a constant pressure of 30 lbf pol-2, using 200 L ha-1 solution. Herbicide efficacy and toxicity were evaluated at 7, 15 and 30 days after application. During harvest, reinfesting plant cover and its degree of mechanized harvest were assessed, as well as culture yield. It can be inferred that the best control of D. insularis sprouts was obtained with nicosulfuron alone at 60 g ha-1.

Keywords : Digitaria insularis; control; weeds.

        · abstract in Portuguese     · text in Portuguese     · pdf in Portuguese