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APPLICATION OF ORGANIC FERTILIZER FROM SUPER INTENSIVE POND WASTE FOR KLEKAP AND MILKFISH GROWTH

Hidayat Suryanto Suwoyo*, Mat Fahrur, Makmur, and Rachman Syah
Research Institute For Coastal Aquaculture
Jl. Makmur Dg. Sitakka, No.129, Maros-90512, South Sulawesi
E_mail: yayhat_95@yahoo.com

 

High stocking density in super intensive aquaculture systems have consequences on the load of waste as a side product of farming activities that may affect the feasibility of shrimp habitat and the environment. Sediment from super intensive of Litopenaeus vannamei farming increased as increasing of stocking density. Solid sediment of super intensive shrimp farming was a potential raw material for organic fertilizer. This study aimed to evaluate the response of organic fertilizer which was produced from super intensive pond waste to the growth of klekap and milkfish.

This research was  conducted in Laboratory of Research Institute for Coastal Aquaculture (RICA), Maros, South Sulawesi, using 70x37x26 cm3 of 15 styrofoam containers. Tested fertilizer were commercial organic fertilizer (A); organic fertilizer from super intensive waste (POLTASI) (B); Urea+SP-36 +commercial fertilizers (C); Urea+SP-36 +POLTASI (D) and control (without fertilizer) (E). All treatments were in 3 replication. Urea fertilizer was applied in 200kg/ha, SP-36 in 100kg/ha, and organic fertilizer (commercial and POLTASI) was in 2,000kg/ha.

Measured variable were biomass of klekap, plankton species composition and the abundance in klekap, growth and survival rate of milkfish. Water quality, i.e temperature, salinity, dissolved oxygen, pH, nitrate, nitrite and phosphate were monitored every week.

Results showed that sediment solid waste of super intensive pond could be used as organic fertilizer. POLTASI (B) obtained 3.94 g/100 cm2 of klekap biomass. All treatments were not significantly different. The most dominant plankton were Cyanophyceae class and Bacillariophyceae class. The highest density of plankton was obtained on treatment D (18,100 ind / L). The growth and survival rate of milkfish were not significantly different between treatment. During experiment water quality was in condusive condition for supporting  the growth of klekap and milkfish.




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