EFFECTS OF DIFFERENT MATERIALS OF COVERING IN THE PRODUCTION OF YERBA MATE SEEDLINGS (Ilex paraquariensis St. Hill)

Abstract

Information you needed on the subject of procedures about to crop as of you shifted as of breeds arboreal native they are a lot scarce , existing merely on the subject of those who greater interest economic. This experiment was installed in a nursery-garden built in the experimental area of the Soils Department and Agricultural Engineering of the Federal University of Paraná with the objective of evaluating the alterations happened in the commercial characteristics of yerba mate seedlings (Ilex paraguariensis St. Hill) in relation to different shading materials. The experiment design was fully randomised blocks with seven treatments by the employment of the material Polysombra Difusora to the base of shading 30, 50 and 70% and of four several cover materials: fabric, bamboo mat, 3 palm tree leaves and 2 palm tree leaves. For eight months, in a total of fourteen samplings, they were appraised the parameters regarding the plant as height of the aerial part, production of fresh and dry matter of the aerial part, root length and production of fresh and dry matter of the system radicular. The treatment that used 2 palm tree leaves presented the best results for number of leaves, production of fresh and dry matter of the aerial part, production of fresh matter of the system radicular and area radicular. The covering material Polysombra Difusora 70% showed the largest values for height of the aerial part and area to foliate. The covering 3 palm tree leaves carted to the seedlings larger root length.