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Heriyanto '
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Agriculture, Biological Sciences & Forestry Environmental Science

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KESUBURAN PERAIRAN WADUK NAGEDANG DITINJAU DARI KOSENTRASI KLOROFIL-a FITOPLANKTON DESA GIRI SAKO KECAMATAN LOGAS TANAH DARAT KABUPATEN KUANTAN SINGINGI PROVINSI RIAU Adnan Kasry; Eni Sumiarsih; Heriyanto '
Berkala Perikanan Terubuk Vol 37, No 2 (2009): Juli 2009
Publisher : Fakultas Perikanan dan Kelautan, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (781.662 KB) | DOI: 10.31258/terubuk.37.2.%p

Abstract

This research was conducted from Mei to June 2009 in the NagedangLakes Giri Sako Villages Logas Tanah Darat Sub-District Kuantan SingingiDistrict, Riau Province. The objective of this research was to predict waterproductivity as water fertilizing level from phytoplankton chlorophyll – α. Surveymethods were used for analysis this research were carried out by combining thephysic and chemical water parameters and also biological parameter(phytoplankton organism) observations.The predict results of this research that taken from 4 stations. It has beenfound average of chlorophyll- α as secchi depth were 37,783 – 43,766 (μg/l); 3class of phytoplankton such as Cyanophyta (15 species), Chlorophyta (11species), and Bacillariophyta (7 species) with average of phytoplanktonpopulation value were 29.873 – 48.237 ind/l; average of physical waterparameters that consist of depth : 235 – 792,3 m, thermo : 28,8 – 29 oC, secchi :74 – 80,3 cm, turbidy : 18,47 – 19,38 NTU, pH : 5,16 – 5,43: Oxygen : 5,26 –5,86 mg/l: carbon dioxide : 5,86 – 8,46 mg/l: Nitrate : 0,0606 – 0,0776 mg/l andphosphate : 0,0237 – 0,0253 mg/l. That value was mean that chlorophyll – α ofphytoplankton in Nagedang Lakes were very productive caused chlorophyllconcentration more than 20 μg/l and based on average of phytoplanktonpopulation shown that Nagedang Lakes were eutrophic (very fertilize) withpopulation more than 104 ind/l. Phytoplankton population had positive correlationwith chlorophyll concentration. The physical and chemical water parameter stillgood for aquatic organism such as phytoplankton and fishes.
PENGARUH PEMBERIAN PUPUK KOMPOS TANDAN KOSONG KELAPA SAWIT TERHADAP PERTUMBUHAN BIBIT GAHARU (Aquilaria spp.) Heriyanto '; M. Mardhiansyah '; Rudianda Sulaeman
Jurnal Online Mahasiswa (JOM) Bidang Pertanian Vol 2, No 2 (2015): Wisuda Oktober 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Pertanian

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Abstract

The purpose of this research was to determine the effect of compost fertilizer of oil palm empty bunch are mixed with top soil as a growing medium to promote growth and development of gaharu. This research is completely randomized experimental design (CRD), which consists of 4 treatment and 10 replicates, number of plants was 40. he treatments are: A0 = Without TKKS Compost, A1 = 25% TKKS Compost + 75% top soil, A2 = 50% TKKS Compost + 50% top soil, A3 = 75% TKKS Compost + 25% top soil. Based on the results of this research can be concluded that fertilization with compost of oil  palm empty bunch are mixed with top soil as a growing medium for seedlings of gaharu able to provide a complete nutrient, so the growth and development of gaharu for the better. The Treatment fertilizing with compost Tankos 75% were mixed with 25% top soil is a treatment that is able to give effect to the high growth of seedlings of gaharu which amounted to 5.08 cm, diameter growth of seedlings of gaharu which is equal to 0.15 mm and dry weight of the plant which amounted to 2.03 g. Keywords: Compost Tankos, Top Soil, Seeds of Gaharu
Co-Authors Adnan Kasry Eni Sumiarsih Muhammad Mardhiansyah Rudianda Sulaeman