Karakteristik Fisika dan Kimia Profil Tanah Dasar Kolam di Desa Koto Mesjid Kabupaten Kampar

The research was conducted from April until June 2012 at Soil and Water Quali-ty Management Laboratory Fisheries and Marine Science Faculty of Riau University.The aim of the research was to know chemical and physical characteristics of pondbottom soil and profiles of PMK soil as potencial to development fish pond. The meth-od used was experimental and make up profiles in four lokation.Characteristics of fish pond bottom soil showed relatively acidic soil (PodsolidRed Yellow) with pH ranging from 4.9 to 5.7, the medium to hight levels of organicmatter (1.56 to 2.21%) and low of total N and CEC. Some locations are potentialenough to build a fish pond, although still need to achive pond bottom soil primarilyuse agricultural lime and organic matter to increase of on CEC and the productivity offish pond

Studi Awal Bioekologi Ikan Geso (Hemibgrus Wyckii, Bagridae)

Nowadays, geso fish Hemibagrus wyckii Bagridae is extinction The objective of this research is to analyze the distribution of length and weight of Geso fish, water quality parameter as the characteristic of Geso habitat and reproduction aspect which is the basic data to perform the domestication process. To know the distribution of length and weight of Geso fish, the samples were taken from three research locations, namely Kampar Kanan River, Kampar Kiri River and Koto Panjang Reservoir, each with 15 individual, To analyze the reproduction aspect of Geso fish required 45 samples and to get the data of Geso fish habitat characteristic was taken once monthly water samples in June, July and August 2015 in three research sites, Kampar Kanan River, Kampar Kiri River and Koto Panjang Reservoir. The results showed that the average length of total and weight of geso fish from Kampar Kanan River (491.93 mm, 1390.83g) and Kampar Kiri River (489.73 mm, 1338.97g) was higher than that of Koto Reservoir Length (286.60 mm; 1078 g). The water quality parameters that are the main differentiator between the three habitats are nitrite, nitrate, electric conductivity and COD. Fecundity of geso fish ranges from 2943-9558 eggs with egg diameter ranging from 1.04 to 2.81 mm. Gonad Somatik Index (IGS) of geso female fishingTKG IV between 2.73-3.97%and males between 1.22-2.00%

Produktivitas Kolam Pembesaran Larva Nila Merah dengan Tanah Dasar Inceptisol yang Dimarel Bahan Ultisol dan Vertisol

A major constraint in the fish farming system in Yogayakarta, Indonesia, isthe low physical fertility of the pond bottom soil, which is made up of the sandyInceptisols. This study aimed to alleviate this constraint by physically mixing itwith Ultisols and Vertisols that have a higher clay content. The Inceptisols wasmixed with Ultisols (I-U) and Vertisols (I-V) with the proportion of (70:30), (50:50), and(30:70). These mixtures were then given basal fertilizer in the form of quaildroppings manure at a dose of 2 tons/ha/month, urea and super phosphate. The fishculture was divided into two systems: ponds with 50 fish/m2 and ponds without fish. Thebest mixture was 30% Inceptisols with 70% Ultisols and 50% Inceptisols with 50%Vertisols with basal fertilizer. These mixtures gave significant improvement inchlorophyll-a concentration, plankton diversity, benthic algae abundance, and fishgrowth

The Effect of Different Light Intensity on Density and Carotenoid Content Dunaliella Salina

Microalgae has an important role in the world of fisheries, because the availability of microalgae is needed as a natural feed in the hatchery business of fish and shrimp. One type of microalgae that is potential to be developed as a natural feed is Dunaliella salina. Factors that influence affect the density and carotenoids of D. salina is the intensity of light because it has an important role in the process of photosynthesis. This study aims to get the best light intensity in increasing the density and content of D. salina carotenoids. This research was conducted on 12-21 May 2019. Located in the Natural Feed Laboratory, Center for Brackish Aquaculture Fisheries (BBPBAP) Jepara. The research method used was a Completely Randomized Design with 4 treatments giving different light intensities namely P1 (2,500 lux), P2 (3,500 lux), P3 (4,500 lux) and P4 (5,500 lux) with 3 replications. Growth was observed for 10 days by calculating daily density and carotenoid content on the 6th day. The results showed that different light intensities affected the density and content of D. salina carotenoids. The highest density and carotenoid content was found in the light intensity of 5,500 lux with a density of 637.87 x 10 4 cells /ml and the carotenoid content of 1.45 µg /ml

Influence of Biofertilizer Different on Some Parameters of Chemistry in Ground Peat Pond

The research was conducted from October to December 2016 in the PeatLand Kualu Nenas village, Tambang Subdistrict, Kampar Regency, RiauProvince. The aim of this research was to find out the influence of biofertilizerdifferent on some parameters of chemistry in the ground peat pond and todetermine opportune biofertilizer different to increase the productivity of landpeat pond. The method used in this study is an experimental method, using aComplete Random Design (CRD) with 1 factor, 4 treatments, and 3 replications.The treatment used in this experiment is chicken fecal biofertilizer gift (P1), cowfecal biofertilizer (P2), dan human fecal biofertilizer (P3). Result of this researchshow best treatment is human fecal biofertilizer (P3) for pH soil, N total, P total,K total, KBOT, C/N rasio, and soil ammonia, chiken fecal biofertilizer (P1) for Ntotal, C/N rasio, and soil ammonia, cow fecal biofertilizer (P2) for N total, P total,and K total. Water quality of pH range from 5-6,7, DO 4,28-4,75, the best CO2 ishuman fecal biofertilizer (P3) 17,33 mg/l, nitrate 2,45-3,77 mg/l, andorthoposphate 1,64-2,56 mg/l

The Effect of Different Salinity on Density and Carotenoid Content Dunaliella Salina

Dunaliella salina is a microalga containing carotenoids. Carorenoids have a role in the absorption of light for photosynthesis, carotenoids also function in coloring for aquaculture animals. Carotenoids is influenced by a variety of environmental factors, such as salinity. This study aims to get the best salinity in increasing the density and carotenoid content of D. salina. The research method used is an experimental method using a Completely Randomized Design (CRD) consisting of One factor with four improvements, to reduce the level of error then repeated three times. This research was conducted in March to May 2019 in the Laboratory Natural Feed Brackish Water Aquaculture Development Center (BBPBAP) located in Jepara Bulu Village, Jepara District, Jepara Regency, Central Java Province. Carotenoid analysis done in the Lab. Primary Chem-Mix located in Kretek, Jambidan, Banguntapan, Bantul, Yogyakarta. The treatment in this study included P1 (salinity 20 ppt), P2 (salinity 30 ppt), P3 (salinity 40 ppt) and P4 (salinity 50 ppt). The results showed that the cell ratio was highest filled in P2 with a concentration reaching 664.86 x 104 cells/mL and contents the highest carotenoid in P4 is 1.4769 μg/m

Pemanfaatan Vermikompos yang Berbeda terhadap Perubahan Parameter Fisika pada Media Tanah Gambut

This research was conducted from January to March 2017 in the Kualu Nenas Village, Tambang district, Kampar Regency, Riau and in Environmental Quality Aquaculture, Faculty of Fisheries and Marine University of Riau. The objective of this research is to know the effect of vermicompost type on change of soil physics properties and peat pond water such as the soil color, crude soil fiber, bulk density, soil porosity, temperature, turbidity dan total suspended solid. The experimental design used a complete randomized design (CRD) with four treatments and three replications by linear model of Sudjana (1991). The treatments applied were without vermicompost (P0), vermicompost from human fecal (P1), vermicompost from cow dung (P2), vermicompost from chicken manure (P3). The result of this study showed that P1 (vermicompost from human fecal) was the best treatment for (crude soil fiber 60.3a %; BD 0.41a g/cm3 and porosity 65a %,). For the turbidity and TSS, The best result in P0 (control). For the soil colour of vermicompost is not effect. the temperature was water that range from 26-31oC the range temperature is still quite good for aquatic organism