Tannery biosolid increases nutrient availability and improves growth of eucalyptus seedlings
DOI:
https://doi.org/10.6008/CBPC2179-6858.2021.006.0007Keywords:
Plant nutrition, Nutrient concentration, Fertilization, Industrial wasteAbstract
The tannery biosolid is a viable alternative for forest plantations, however, it may present varied chemical composition and high concentrations of chromium and mineral salts, such as sodium. The objective of this study was to evaluate the nutritional aspect, growth and dry mass accumulation of Eucalyptus pellite plants in different doses of tannery biosolid. The experiment was carried out in a greenhouse with a completely randomized design and five replications (5 x 5). The treatments were composed of four doses of the tannery biosolid (24, 40, 75 e 100 t ha-1) and a control (inorganic fertilization). The dose of 100 t ha-1 increased root, leaf and stem dry mass by 70.52, 18.18 and 42.25% respectively, compared to the control. The application of complementary fertilization is necessary to meet the nutritional requirements of the plant. The Dickson Quality Index (DQI) showed plant quality gains with increasing doses of biosolids. The leaf concentration of Cr was below the level considered toxic for eucalyptus plants. Ca and Mg presented concentrations within the range considered ideal. The use of tannery biosolid is an option for the supply of nutrients in eucalyptus plantations.
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