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Pengaruh Pemberian Biofertilizer Formulasi Terhadap Kelimpahan Fitoplankton Pada Kolam Ikan Patin (Pangasius Sp.) Di Tanah Gambut
Biofertilizers are biological fertilizers that contain microorganisms that can improve nutrients so they can increase the abundance of phytoplankton.This research has been conducted in April until Juni 2018 at Kualu Nenas village, Tambang, Kampar Riau and for the observation of phytoplankton conducted in environment quality Laboratory of Aquaculture, Faculty of Fisheries and Marine University Riau. The purpose of this research is to figure out the appropriate dose of biofertilizer formulations to increase the abundance of phytoplankton in a Patin fish pond. The method used in this research is the experimental method of using a complete randomized design of 1 factor, 5 levels of treatment and 4 times repeated. The use of a dose of biofertilizer formulation refers to Syafriadiman and Harahap (2017). The doses used in this study are: P0: Without biofertilizer formulations (control), P1: of biofertilizer formulations 700 g/m2, P2: biofertilizer formulations 750 g/m2, P3: biofertizer formulations 800 g/m2 and P4: biofertilizer formulations 850 g/m2. The results showed that the formulation dosage of 750 g / m2 bifertilizer could produce 48.943 cell / L abundance of phytoplankton and the phytoplankton type which was dominantly found from the chlorophyta class with an abundance of 27,867 cells / L.
Keywords: phytoplankton, peat soil, biofertilizer formulation, (Pangasius sp.)
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