Influência de diferentes materiais para controle de plantas competidoras no crescimento inicial de Araucaria angustifolia

Abstract

The aim of this work was to test different types of material to control weed competition in Araucaria angustifolia planting in the municipality of São João-PR, based on silvicultural and economic criteria. The work consisted in the implantation of Araucaria angustifolia on a property in the interior of São João-PR. In commercial plantations, several human interventions are required for improve the production, so the interference factors for the good development of the plants must be taken into account, and the main interferences such as climate, soil and weed competition can be cited. Control of weed competition is the main focus of the work, where six control methods were used, among which are the most common in the present day, such as manual weeding and herbicide use, and three physical methods aimed at the use of materials of easy being: cardboard, sawdust, plastic canvas and the control treatment without intervention of the materials. The experimental design was completely randomized. In each treatment, 36 plants were used, being evaluated in the period of six months. Of the evaluated treatments, the ones that had the most positive results, both for the weed control and for the development of the seedlings were the cardboard followed by the sawing with very satisfactory results.