Análise do desempenho de Beta vulgaris 1. Mediante adubação orgânica com cinzas de eucalipto.

Abstract

The biomass ash is the product of vegetable burning, resulted from wood combustion. Such burning is used in silage drying machines, aiming at reducing the humidity of stored grains. Although such ash is a waste from wood burning, it has great potential for agriculture as source of organic fertilization, mainly when it refers to potassium fertilization. The present study aimed at evaluating the viability of using eucalyptus ash from burnings in silage drying machines, as a source of organic fertilization for Beta vulgaris cultivation. The experiment was carried out in an arc greenhouse, with shadow in vases of 11 L of polyethylene. The treatments were 0, 7, 14, 21, 28 and 37 g.dm⁻³ per vase, with five repetitions for treatment. The characteristics, which were analyzed, were number of leaves, dry and fresh weight of aerial and root parts; root’s diameter and length. Regarding main results that were found, it was evident in this case, that, the application of ash has caused a reduction in the characteristics that were analyzed, which has generated a negative linear regression. The bigger the dose of ash applied in the plant was; the worse its development was. It was concluded through this study that, even though the ash owns a great potential as organic fertilization, it is necessary taking into consideration the chemical composition of such fertilizer, besides the nutritional need of the plant, before deciding for applying it.