Desenvolvimento vegetativo de cultivares de amoreira-preta (Rubus sp.) em sistema orgânico no município de Laranjeiras do Sul/PR

Abstract

Blackberry (Rubus sp.) is cultivated in Brazil since 1972 and it is a small fruit with proven adaptation in different regions of the country. The increasing interest in production is due to fruit processing rusticity, productivity and diversity in several types of products. In addition, it has a nutraceutical value. There are a large number of cultivars adapted to different conditions in Brazil. Therefore, studies on the vegetative and reproductive behavior under these environments are required. The aim of this work was to evaluate the performance of four blackberry cultivars in an organic system in Laranjeiras do Sul/PR. The experiment was designed in randomized block design with four treatments and eight replications. The treatments consisted of four cultivars: Tupy, Guarani, Cherokee and Xavante. The vegetative parameters evaluated were: plant height, number of lateral branches issued until dormancy and fresh weight of shoots material pruned. Data were subjected to analysis of variance and Tukey’s mean comparison test at 5% probability level was applied. The Tupy and Guarani blackberry cultivars had a better performance in the parameters evaluated. The Tupy cultivar presented higher issuing lateral branches (26,29) with uniform distribution throughout the plant, while the Guarani cultivar showed lower average emission of lateral branches concentrated in the plant base. The Cherokee and Xavante cultivars showed the worst performance in these culture conditions. In conclusion, the Tupy and Guarani blackberry cultivars could be recommended to organic cultivation at Laranjeiras do Sul Region.