Effect of the rearing tank residue of fish farms on the production of passion fruit tree seedlings

• Main Authors: F. O. R. Silva, C. C. V. Melo, H. A. Botelho, F. B. M. Souza, J. D. Ramos
• Format: Article
• Language: English
• Published: Instituto de Zootecnia 2017-03-01
• Series: Boletim de Indústria Animal
• Subjects: Passiflora edulis; massa; substrato.
• Online Access: http://revistas.bvs-vet.org.br/bia/article/view/35934

The objective of this study was to evaluate the initial growth of seedlings and biomass production of blue and yellow passion fruit trees (round cultivar) produced from residue of the rearing tanks of fish farms. The experiment was conducted in a greenhouse using residue obtained from fish farming tanks. Ravine soil (RS), fish tank residue (FR) and Tropstrato (TR) were used as substrate. The treatments were: T1 = control consisting of Tropstrato substrate; T2 = 25% FR + 75% RS; T3 = 50% FR + 50% RS; T4 = 25% RS + 75% FR; T5 = 100% FR. A completely randomized block design consisting of 5 treatments, 4 replicates and 11 plants per plot was used. Treatment T5 (100% fish farming residue) resulted in the largest average number of leaves, highest dry matter production of the aerial part, and highest dry matter accumulation in the root (P<0.05). The worst results were obtained for the treatment using 25% FR (T2), which resulted in less uniformity of the variables studied. Stem height of the passion fruit tree was greater for the treatments that included FR, with the greatest mean height being observed for T5. In conclusion, the treatment using the residue of fish farming tanks was found to be beneficial to produce yellow passion fruit seedlings (round cultivar), representing a good alternative for the reutilization of this residue.