Uso de efluentes de Carcinicultura para irrigação da Halofita salicórnia sp

Abstract

The objective of this work was to reuse shrimp effluents used in shrimp culture to irrigate Salicornia sp as compared to Bons Signals water, cultivated in separate beds, which were determined chemical and physical parameters (PO4-, NO3-, salinity , soil pH), which were determined in the laboratory of FIPAG and in the laboratory of the ESCMC and the percentage concentrations, mg / 100 of the nutrients that were determined in the laboratory of Soils, plants and water, the values are presented in the tables 1, 3 and 4 , it was determined the heights in cm and weights in total average g and that were 14.66cm and 6g respectively for plants irrigated with estuary water, the plants irrigated with shrimp effluents were respectively 19.45cm and 12.26g. The animals were irrigated for 77 days with an initial population density of 40 individuals at each site. On the 14th day, 3 individuals died among plants irrigated with estuarine water, corresponding to 7.5% of dead individuals, and in plants irrigated with registered shrimp effluent 1 dead person is equal to 2.5% and at the end of the cultivation there were 4 dead individuals among the plants irrigated with 10% shrimp effluent and for the B-bed 4 individuals were killed. The plants irrigated with water from the estuary obtained a growth rate of 3,533 with a survival rate of 29 individuals corresponding to 72.5%, compared to plants irrigated with shrimp effluents had a good development and growth rate which was 13.36 with a final survival rate of 36 individuals corresponding to 90%. It is concluded that the water of the Bons Sinais estuary, which are natural have lower nutrient concentrations which may need more time for the development of the plants under cultivation. While shrimp farming effluents is an excellent source for integration into agriculture taking into account that they carry with them nutrients used during the cultivation of organisms in the form of feed, it can be used for large or small scale production without assisting with organic fertilizers or compounds.