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Journal : BIOGENESIS

PERTUMBUHAN VEGETATIF DUA VARIETAS JAGUN G PADA TANAH GAMBUT YANG DIBERI LIMBAH PULP & PAPER Ermanita '; Yusnida Bey; Firdaus LN
Biogenesis Vol 1, No 01 (2004)
Publisher : Program Studi Pendidikan Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2051.344 KB) | DOI: 10.31258/biogenesis.1.01.1-8

Abstract

Vegetative growth performance of two varieties of maize by  pulp and paper waste application has been studied  in  peat  soils  using  Factorial  Completely  Randomized  Design  in  biological  garden,  faculty  of education  and  teacher training,  Riau  University.  The  experiments were arrange by  factorial 2 x 5   and three replications. First factor was two maize varieties i.e. Arjuna and Bisi-2. Second factor was Pulp and Paper waste taken from Riau Pulp and Paper Industry. Rate of application were 0,  15, 20, 25, and 30 gr kg 1peat soils. Plant height, leaf length, leaf wide and plant dry weight were measured. Data analyzed by using ANAVA  dan  Duncan’s Multiple Range Test at 5% level of signification.  The results  shows that plant height and leaf length has significance difference between two maize varieties, but not for leaf wide and dry weight. There were no significant interactions effects for all parameters observed. We conclude that the varieties of Arjuna more tolerance and adaptive to  peat soil.Key words : pulp and paper industrial waste, maize tolerance, vegetative growth
TREND 25 TAHUN (1988-2012) PENELITIAN TUGAS AKHIR MAHASISWA PENDIDIKAN BIOLOGI FKIP UNIVERSITAS RIAU Firdaus LN; Raja Hussien Arief
Biogenesis Vol 10, No 2 (2014)
Publisher : Program Studi Pendidikan Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (562.89 KB) | DOI: 10.31258/biogenesis.10.2.18-27

Abstract

A desciptive Studies on thesis of biology education student has been explored at Faculty of Teacher Training and Education, University of Riau. Data are based on the student Thesis published at the last twenty-five years (1988-2012). As much as 525 Thesis abstract has been analyzed by using total sampling technique. The subject area, research methodes, biology concept and biology teaching concept were indentified. Data were analyzed descriptively. The results shows that most of the thesis focus on Senior High School as a subject of their research. Descriptive and survey methodes are the most chosen by the students in their thesis. At least 57 biology concepts has been Studied as independent variables, and the concept of pollution is the most frequent. There are 40 biology concepts has been Studied as dependent variables, and the most frequent on plant vegetative growth. We found at least 152 biology inctructional concepts has been Studied as independent variables. Biological subject content is the most ferequent. There are 20 biology instructional concepts has been Studied as dependent variables, and the most frequent is learning achievement concept.Keywords: biological education research, biology undergraduate student, Biological concept, biology instructional concept, research in science education, research methology
PERTUMBUHAN AKAR TANAMAN KARET PADA TANAH BEKAS TAMBANG BAUKSIT DENGAN APLIKASI BAHAN ORGANIK Firdaus LN; Sri Wulandari; Giska Dwi Mulyeni
Biogenesis Vol 10, No 1 (2013)
Publisher : Program Studi Pendidikan Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (331.168 KB) | DOI: 10.31258/biogenesis.10.1.53-64

Abstract

The ex-situ experimental research on root growth of rubber (Hevea brasiliensis Mull. Arg. clone PB 260) cultivated in ex-mining bauxite soil byapplication of organic manure has been carried out at Natural Biology Education Laboratory University of Riau during January to June 2013. The purpose of this research was looked for a kind and mixture organic manure ratio to the ex -mining bauxite soil that gave the best root growth. The chicken and cow manure were used as source of organic matter in this single faktor experiment. Three ratios of organic manure : ex-mining bauxite soil (w/w) has been applied i.e control (exmining bauxite soil only), (1:1), and (1:2) were arranged according to Complete Randomize Design. The parameters that observed were root volume, wet weight of root, dry weight of root, shoot : root ratio. The data were analyzed by using one-way ANOVA and advance test by using Duncan Multiple Range Test (DMRT) in level of 5%. The results show that the mixture ratio 1:2 of cow organic manure and ex-mining bauxite soil gave the best root growth of rubber clone PB 260, particularly root volume (24,8 cm3), wet weight of root (24,2 g), dry weight of root (5,6 g) and shoot : root ratio (19,1 g). In conclusion, the mixture ratio 1:2 of cow manure and ex-mining bauxite is recommended for reclaiming bauxite ex-mining land by planting rubber plant PB 260 in term of root growth.Keywords : chicken and cow organic manure, ex-mining bauxite soil, Hevea brasiliensis Mull. Arg. clone PB 260, root growth