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Title: Use of Human Urine as Fertilizer for Cultivation of Tomato (Solanum Lycopersicun) and Red Beetroot (Beta Vulgaris)
Authors: Berhanemeskel Melak
Meseret Chimdessa
Keywords: Beetroot, Tomato, Fertilizer, microorganisms, Nitrogen, Human Urine.
Issue Date: Jun-2014
Publisher: Haramaya University
Abstract: and Potassium (K). Therefore, human urine and synthetic chemical fertilizer (SCF) are comparable in terms of the nature of N content. In both cases, 90-100% of N is either in the form of urea or ammonium. Thus, the research was initiated to study the effect of human urine used as fertilizer on commonly grown vegetables such as tomato and beetroot. The tomato and beetroot varieties were collected from Melkassa Research center and local seed sellers respectively. The experiments were based on greenhouse and field in RCBD with in 3 replications. Human urine was collected from students of Haramaya University (HU) in a jerrycan and stored for 8 weeks before chemical analysis. N content of urine was determined using Kjeldhal method and found to contain 9.3gN/L of urine. Results of greenhouse experiment showed that supplementation of nitrogen at a rate of 135kgN/ha through human urine fertilization increased number of fruits/plant, number of leaves/plant, total fresh biomass, shoot and root dry weight of tomato at least by twofold when compared with that of control. Average tomato fruit weight and plant height at harvest were also increased by about 40%. Likewise, supplementation of nitrogen through SCF and human urine significantly increased plant height at harvest, number of leaves per plant, root fresh weight (commercial yield) and total fresh biomass of red beet root when compared with unfertilized ones. In the field results, agronomic response of different varieties of tomato fertilized by double concentration, all measured parameters (plant height at harvest, number of branches, number of leaves per plant, days to flowering, number of fruit per plant, fruit weight, total plant biomass weight, shoot dry weight and root dry weight) were significantly higher than control plant. The microbial quality of the tomato and beetroot samples was assessed. The data showed that Entrococcus, Salmonella and Staphyloccus spp. were not detected in any of the samples. However, the indicator microbial groups such as clostridia, fecal coliforms and total coliforms were detected in all fertilized tomato and red beetroot samples and no significant difference was observed among the treatments. The results of the microbial analysis did not establish any negative pathological contamination due to the use of urine. Finally, it is concluded that urine fertilization was found to be better than unfertilized ones in terms of growth performance and commercial yield, as good as synthetic chemical fertilizer (urea) in enhancing plant’s performance. The result suggests that human urine, which is released into the environment as waste can serve as an alternative to an expensive commercial fertilizer to cultivate tomato and red beetroot.
Appears in Collections:Biology

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