Cultivo de tambaqui (Colossoma Macropomum Cuvier, 1818) integrado a produção de cebolinha (Allium Fistulosum L.)

Abstract

Aquaculture is a practice that has been leveraging in recent years due to the demand for healthier food; aquaponics is a production model that meets this demand, combining two systems: hydroponics (production of plants in soil) and aquaculture (production of aquatic organisms). However, there is still a lack of studies with native species. Thus this study aims to evaluate the production of Chives (Allium fistulosum L.) in a system with Tambaqui. The experiment was conducted in the Laboratory of Aquaculture Biosystems (UFRA), in a protected environment with daily monitoring of temperature and relative humidity of the air, the system was composed with an animal culture tank (4 m3), a decanter, a biofilter, filter média, a pump (4000L/H) and four plant culture stands (1 m2). Four treatments with different densities of chives were tested: T1 (128 plants.m-2); T2 (64 plants.m-2); T3 (48 plants.m-2) and T4 (32 plants.m2) with 3 repetitions. For a stocking density of 5,6 kg fish biomass.tank -1. Fresh and dry matter weight (MFPA, MFR, MSPA and MSR, MST), the total number of leaves (NF), the height of the aerial part and total (APA, ATA), root height (RA) and colt diameter (DC) were analyzed. After 15 days of experiment time, visually the onions from all treatments presented similar phytotechnical characteristics. The tambaquis showed an average weight gain of 362,25 (g), with 100% survival. There was a significant difference among treatments for plants. In the analyzed parameters (pH), (T), (OD) and (CD), (TDS) nitrogen compounds (nitrite, nitrate and ammonia), were ideal for culture. Therefore, the production system of the chive, the most suitable, is the density 128 seedling.cell -1 considered commercially viable.