Effect of different inorganic fertilizers on the phytobenthos composition in Litopenaeus vannamei culture ponds

Authors

  • Luis Otavio Brito Instituto Agronômico de Pernambuco - IPA, Departamento de Extensão Rural e Assistência Técnica
  • João Batista Pereira Neto Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco
  • Danielli Matias de Macêdo Dantas Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco
  • Rebeca Ferreira Lemos Vasconcelos Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco
  • Alfredo Olivera Galvez Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco

DOI:

https://doi.org/10.32360/acmar.v47i1.5953

Keywords:

Litopenaeus vannamei, farming, sodium nitrate, urea, Cyanophyta, Bacillariophyta.

Abstract

The compositon of phytobenthos in  Litopenaues vannamei culture ponds was analyzed using different  inorganic fertilization strategies. The experimental design was completely randomized with two treatments: T1 - sodium  nitrate enriched with phosphate, silicate, boron, magnesium, sulfur and potassium; T2 - urea, triple superphosphate and  sodium silicate. The phytobenthos was collected in the fifth- and ninth-week culture and groups in the identification were:  Cyanophytas, Pennales and Centric Bacillariophytas. Mean Pennales Bacillariophytas (p<0.05) density was significantly  higher in T2 (84,333 cel./ml) in the ninth week as compared to T2 (31,000 cel/ml). Mean Cyanophytas and Centric  Bacillariophytas percentage densities, and shrimp’s weight shrimp were similar in both treatments.

Published

2014-07-01

Issue

Section

Artigos originais