Eucalyptus seedlings development submitted to fertirrigation with swine wastewater
DOI:
https://doi.org/10.6008/CBPC2179-6858.2018.007.0026Keywords:
Reuse, Effluent, Organic FertilizationAbstract
One of the alternatives that has been pointed out to solve the problems caused by the inadequate disposal of agroindustrial wastes is its reuse in agriculture. However, incorrect use may cause deleterious effects on soil, water resources and be a risk factor for animal and human health. Thus, this study aimed to study the reuse of swine wastewater (SW) in the development of eucalyptus seedlings. For this, seedlings of the variety Eucalyptus urophylla were produced, transplanted into potted plants and subjected to fertigated WS, after a preliminary treatment, in order to provide 100% and 200% of the recommended fertilizer rate for eucalyptus without additional mineral fertilizer and with complementary mineral fertilization. The supplemental mineral fertilization was calculated by subtracting the amount of phosphorus and potassium contributed by the different WS doses from those recommended values for the crop. The results allowed to conclude that WS fertigation allowed the supply of nutritional demands, providing seedlings with good development and metabolism, presenting higher lengths, collar diameters and quality index; considering the economic and environmental aspects, the WS fertigation supplying 200% of the nitrogen dose, without completing the fertilization, becomes a technical and environmentally adequate recommendation.
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