Use of treated domestic sewage in the forage palm production in rural settlement of the Brazilian semi-arid region

Submitted by Lara Oliveira (lara@ufersa.edu.br) on 2017-02-16T19:44:44Z No. of bitstreams: 1 MarcírioL_TESE.pdf: 4644751 bytes, checksum: 0edf8df704d3649fa1696d01be1a259a (MD5) Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2017-03-21T14:53:55Z (GMT) No. of bitstreams: 1 MarcírioL_TESE.pdf: 4644751 bytes, checksum: 0edf8df704d3649fa1696d01be1a259a (MD5) Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2017-03-21T14:54:33Z (GMT) No. of bitstreams: 1 MarcírioL_TESE.pdf: 4644751 bytes, checksum: 0edf8df704d3649fa1696d01be1a259a (MD5) Made available in DSpace on 2017-03-21T15:02:20Z (GMT). No. of bitstreams: 1 MarcírioL_TESE.pdf: 4644751 bytes, checksum: 0edf8df704d3649fa1696d01be1a259a (MD5) Previous issue date: 2016-07-26 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior The population growth contributes to environmental crises by stressing water resources and their reuse is an essential component of their management. The crisis requires conservation practices with emphasis on the use of treated domestic sewage in the forage palm production. In this way, the application of domestic effluent to the soil and the growth and development of the Mexican elephant ear (Opuntia tuna (L.) Mill) palm was evaluated. The experiment was carried out in the Milagres settlement, in the municipality of Apodi-RN, cultivated in a randomized complete block design in subdivided plots 3 x (4 + 1), with 4 replicates, being three densities (d1 - 0.10 x 0.80 x 2.20 m {33,333 plants / hectare}, d2 = 0.13 x 0.80 x 2.20 m {52,282 plants / hectare}, d3 = 0.20 x 0.80 x 2.20 m {66,666 plants / Hectare) and four intervals between irrigation with fixed blade (3.5 mm per event) with water supply - AA and treated domestic sewage - EA, being (2.3 days AA and 7, 14 and 21 days AE) with 3.5 mm each and one control as dry. The plant height, total number, length, width, thickness and perimeter of cladodes, as well as the average growth of green matter (MV) per plant and total, and the percentage of dry matter (DM), were evaluated every 75 days, beginning after planting, and ending at 375 days after planting (DAP); and at the end of one year, soil nutrients were evaluated in the 0-20 and 20-40 cm layers and the average of the exported nutrients, which were submitted to regression and means tests. There was an effect (p