Avaliação de diferentes mix de plantas de cobertura hibernais

Abstract

In order to demonstrate the importance of using cover crops in the autumn/winter period in the state of Paraná, this work proceeded with the evaluation of some variables such as dry matter (DM) production, cost per kg of DM, carbon contente total organic matter (TOC) and total nitrogen in plant tissue, carbon/nitrogen ratio (C/N) and representativeness of each species within the mix, in order to demonstrate the efficiency of the use of these plants. The experiment was conducted at the Federal Technological University of Paraná, Campus Dois Vizinhos. Counting on 7 mix of Aduverd commercial cover plants: 1003, 1004, 1005, 1006, 2002, 2003 and 2004 and black oat BRS 139 and IPR 61 in single form. The experimental design used was randomized blocks with 9 treatments and four replications in plots of 2.22 x 10 m. Sowing was carried out on June 8, 2021 and DM collection on September 20, 2021. There was no difference between treatments for DM production, total nitrogen and C/N ratio. For the TOC there was a significant difference for Oat IPR 61 with lower contents of the other treatments (396.28 g. kg- ¹). Among the species with the best MS/density ratio, turnip and rye had the best ratios. The cost per DM was favorable for single oats in relation to the mix.