Influência do extrato pirolenhoso no controle da tiririca Cyperus sp.

Abstract

The tiririca (Cyperus sp.) is a weed existing in all Brazilian territory that costs agricultural production costs, makes it difficult to harvest olericultural plants and difficult to control. Nowadays, with the use of organic products that combat pests, diseases and even weed species, such as the pyroligneous extract (PE), it becomes a viable way to minimize agricultural productivity losses. Seek to offer sustainable alternatives for the control process of spontaneous plants, the objective of this work was to evaluate the potential of the pyroligneous extract in the control of tiririca (Cyperus sp.). The experiment was developed in randomized blocks, in the municipality of Lagoa Seca - PB. For the treatments, 2x4 + 1 factorial scheme was assigned, being two application periods and 4 dosages of the EP byproduct, followed by a control treatment free of some type of control. Were analyzed the average number of tubers, the average weight of the tubers and the phytotoxicity index. The higher dosages of the EP, as well as the advanced repetitions of application of the byproduct presented beneficial effects in combat the plants of tiririca.