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All Journal AGROEKOTEKNOLOGI BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan)
E Harso Kardhinata
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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KEANEKARAGAMAN JENIS MANGROVE DI DESA TANJUNG REJO KECAMATAN PERCUT SEI TUAN SUMATERA UTARA Julita Erischa Br Bangun; E Harso Kardhinata; Ferdinand Susilo
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol 1, No 1 (2014): Agustus
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v1i1.13

Abstract

Research on mangrove species diversity in the village of Tanjung Rejo Percut Sei Tuan district in North Sumatra was held in June-September 2012 which aims to determine mangrove vegetation species diversity, species density, frequency and dominance of mangrove species. Primary data obtain by sampling and direct observation by making the observation plots at the study site. Observations indicate that 14 mangrove species classified into eight families. Values of density, frequency and dominance for the highest level of the tree, and the seedling pacang contained on Avicenniaceae. Mangrove species diversity to the next level of the tree is 0.80 and the 1.38 level pacang 1.88 seedlings. The range indicates the diversity of mangrove species is low. 
UJI BEBERAPA VARIETAS PADI SAWAH IRIGASI (Oryza sativa L.) DAN APLIKASI PUPUK KALIUM (KCl) UNTUK MENINGKATKAN PRODUKSI DAN KETAHANAN REBAH Arnen Pasaribu; E Harso Kardhinata; Mbue Kata Bangun
Jurnal Agroekoteknologi Vol 1, No 2 (2013)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (498.583 KB) | DOI: 10.32734/jaet.v1i2.1182

Abstract

Arnen Pasaribu, Test of Rice Varieties (Oryza sativa L.) and Fertilizing of Potassium (KCl) toIncrease Production and The Lodging Resistance. Ir. E.H. Kardhinata, M,Sc. as chairman of thecommision of advisors and members Ir. M.K. Bangun, MS. The aim of the research to get ricevarieties and the best dosage of potassium to increase production and the straw strenght.Randomized block designfactorial was used in this research. The first factors were the varieties(Ciherang, Inpari I, Mekongga and Cibogo) and second factors were dossages of potassium (0,50, 100, and 150 kg/ha). The treatments was used three replications. The parameter wichobserved are height of plant, straw strength, straw diameters, dry weight, straw thickness,panicle length, number of productive tillers, percentage of grains per penicle, percentage ofempty grains, the weight of 1000 seeds, weight of grains perplot, lodging index and hertability.The result of this experiment showed that weight of grains Ciherang is better than the others, themaximum dosages of potassium were 85.07 kg/ha; 103.35kg/ha and66.67 kg/ha for Ciherang,Mekongga and Cibogo but relation of potassium Inpari I showed linear positive. Interractions ofvariety and potassium showed significantly diffrence on height of plant at 3 week after plantedand weight of grains.Key words : Rice, Varieties, Potassium fertilizer.
Co-Authors Arnen Pasaribu Ferdinand Susilo Julita Erischa Br Bangun Mbue Kata Bangun