Avaliação de guaranazeiro cultivado em diferentes estandes de plantas nos primeiros anos de produção

Abstract

The guarana cultivation has great social and economic importance in Maués City. Aimed at increasing crop yields, studies are needed on the plant population per unit area. This work aimed to evaluate the effects of different plant stands in the cultivation of guarana on aspects of vegetative growth, diseases, soil fertility and productivity, to improve the productive use of areas with the culture of guarana and reducing the impact of the implementation of the culture in new areas, providing an economic return for producers of guarana in Maués City, Amazonas State. We studied two clones BRS-Amazonas (CMU-300) and BRS-Maués (CMU-871) in booths of 625, 833, 1,111, 1,666, 2,500 and 5,000 plants per hectare. The experimental design for the analysis was completely randomized in factorial arrangement 2x6 and the number of replicates ranged from 3 to 10 according to the variables studied. The increase in the plant stands showed the economic viability for all indicators, with low risk of obtaining unfavorable results in the region analyzed when the used clones show high resistance to major diseases affecting the crop. There is need for continued evaluation to define the better stand of plants per unit area, which should be set at the end of at least five years of evaluation, after the stabilization of yield per plant.